/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/array-examples/standard_copy7_ground-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 03:34:35,667 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 03:34:35,670 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 03:34:35,706 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 03:34:35,707 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 03:34:35,709 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 03:34:35,711 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 03:34:35,714 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 03:34:35,716 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 03:34:35,718 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 03:34:35,720 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 03:34:35,721 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 03:34:35,722 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 03:34:35,723 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 03:34:35,725 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 03:34:35,726 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 03:34:35,727 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 03:34:35,728 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 03:34:35,731 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 03:34:35,733 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 03:34:35,739 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 03:34:35,740 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 03:34:35,742 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 03:34:35,743 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 03:34:35,746 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 03:34:35,747 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 03:34:35,747 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 03:34:35,748 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 03:34:35,749 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 03:34:35,750 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 03:34:35,750 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 03:34:35,751 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 03:34:35,752 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 03:34:35,753 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 03:34:35,755 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 03:34:35,755 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 03:34:35,756 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 03:34:35,757 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 03:34:35,757 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 03:34:35,758 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 03:34:35,759 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 03:34:35,760 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 03:34:35,788 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 03:34:35,789 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 03:34:35,790 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 03:34:35,791 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 03:34:35,791 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 03:34:35,791 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 03:34:35,792 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 03:34:35,792 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 03:34:35,794 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 03:34:35,794 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 03:34:35,794 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 03:34:35,794 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 03:34:35,795 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 03:34:35,795 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 03:34:35,797 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 03:34:35,797 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 03:34:35,797 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 03:34:35,797 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 03:34:35,798 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 03:34:35,798 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 03:34:35,798 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 03:34:35,798 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 03:34:35,798 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 03:34:35,799 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 03:34:35,799 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 03:34:35,799 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 03:34:35,799 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 03:34:35,799 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 03:34:35,800 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 03:34:35,800 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 03:34:36,245 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 03:34:36,271 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 03:34:36,274 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 03:34:36,275 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 03:34:36,276 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 03:34:36,277 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_copy7_ground-1.i [2020-10-29 03:34:36,365 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/867b76d7c/fba8819d7a7d426caebdc0e7a929c776/FLAG7957daf87 [2020-10-29 03:34:37,035 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 03:34:37,035 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-examples/standard_copy7_ground-1.i [2020-10-29 03:34:37,048 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/867b76d7c/fba8819d7a7d426caebdc0e7a929c776/FLAG7957daf87 [2020-10-29 03:34:37,405 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/867b76d7c/fba8819d7a7d426caebdc0e7a929c776 [2020-10-29 03:34:37,408 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 03:34:37,415 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 03:34:37,417 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 03:34:37,418 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 03:34:37,422 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 03:34:37,423 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:34:37" (1/1) ... [2020-10-29 03:34:37,426 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73e187d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:34:37, skipping insertion in model container [2020-10-29 03:34:37,426 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:34:37" (1/1) ... [2020-10-29 03:34:37,435 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 03:34:37,452 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 03:34:37,684 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:34:37,691 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 03:34:37,736 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:34:37,767 INFO L208 MainTranslator]: Completed translation [2020-10-29 03:34:37,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:34:37 WrapperNode [2020-10-29 03:34:37,768 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 03:34:37,770 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 03:34:37,770 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 03:34:37,771 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 03:34:37,784 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:34:37" (1/1) ... [2020-10-29 03:34:37,787 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:34:37" (1/1) ... [2020-10-29 03:34:37,810 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:34:37" (1/1) ... [2020-10-29 03:34:37,811 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:34:37" (1/1) ... [2020-10-29 03:34:37,833 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:34:37" (1/1) ... [2020-10-29 03:34:37,840 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:34:37" (1/1) ... [2020-10-29 03:34:37,843 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:34:37" (1/1) ... [2020-10-29 03:34:37,846 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 03:34:37,847 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 03:34:37,847 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 03:34:37,847 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 03:34:37,848 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:34:37" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 03:34:37,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 03:34:37,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 03:34:37,934 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 03:34:37,934 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-29 03:34:37,935 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 03:34:37,935 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 03:34:37,936 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 03:34:37,936 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-29 03:34:37,936 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-29 03:34:37,936 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 03:34:37,937 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 03:34:37,938 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 03:34:37,938 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 03:34:37,938 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 03:34:37,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 03:34:37,939 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 03:34:37,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 03:34:37,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 03:34:37,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 03:34:37,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 03:34:38,626 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 03:34:38,626 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-29 03:34:38,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:34:38 BoogieIcfgContainer [2020-10-29 03:34:38,629 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 03:34:38,631 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 03:34:38,632 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 03:34:38,636 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 03:34:38,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 03:34:37" (1/3) ... [2020-10-29 03:34:38,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cba3bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:34:38, skipping insertion in model container [2020-10-29 03:34:38,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:34:37" (2/3) ... [2020-10-29 03:34:38,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cba3bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:34:38, skipping insertion in model container [2020-10-29 03:34:38,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:34:38" (3/3) ... [2020-10-29 03:34:38,641 INFO L111 eAbstractionObserver]: Analyzing ICFG standard_copy7_ground-1.i [2020-10-29 03:34:38,655 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 03:34:38,662 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 03:34:38,678 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 03:34:38,718 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 03:34:38,718 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 03:34:38,718 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 03:34:38,719 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 03:34:38,719 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 03:34:38,719 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 03:34:38,719 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 03:34:38,719 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 03:34:38,743 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2020-10-29 03:34:38,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-29 03:34:38,753 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:34:38,754 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:34:38,755 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:34:38,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:34:38,764 INFO L82 PathProgramCache]: Analyzing trace with hash 1013743180, now seen corresponding path program 1 times [2020-10-29 03:34:38,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:34:38,774 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1906242478] [2020-10-29 03:34:38,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:34:38,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:38,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:39,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:39,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:39,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:39,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:39,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:39,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:39,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:41,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:41,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 03:34:41,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 03:34:41,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2675 [2020-10-29 03:34:41,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:41,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:41,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:34:41,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-29 03:34:41,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 03:34:41,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 03:34:41,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:34:41,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:41,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:41,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:41,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:34:41,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:34:41,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:34:41,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:41,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:41,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:34:41,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:34:41,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:34:41,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:34:41,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:34:41,726 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1906242478] [2020-10-29 03:34:41,729 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 03:34:41,729 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 03:34:41,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378496052] [2020-10-29 03:34:41,734 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 03:34:41,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:34:41,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 03:34:41,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 03:34:41,752 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 4 states. [2020-10-29 03:34:42,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:34:42,031 INFO L93 Difference]: Finished difference Result 103 states and 155 transitions. [2020-10-29 03:34:42,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 03:34:42,033 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-10-29 03:34:42,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:34:42,042 INFO L225 Difference]: With dead ends: 103 [2020-10-29 03:34:42,042 INFO L226 Difference]: Without dead ends: 56 [2020-10-29 03:34:42,047 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 03:34:42,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-29 03:34:42,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 49. [2020-10-29 03:34:42,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-29 03:34:42,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 57 transitions. [2020-10-29 03:34:42,096 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 57 transitions. Word has length 29 [2020-10-29 03:34:42,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:34:42,097 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 57 transitions. [2020-10-29 03:34:42,097 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 03:34:42,097 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 57 transitions. [2020-10-29 03:34:42,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-29 03:34:42,099 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:34:42,099 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] [2020-10-29 03:34:42,099 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 03:34:42,100 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:34:42,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:34:42,100 INFO L82 PathProgramCache]: Analyzing trace with hash 188130124, now seen corresponding path program 1 times [2020-10-29 03:34:42,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:34:42,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [334032977] [2020-10-29 03:34:42,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:34:42,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:42,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:42,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:42,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:42,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:42,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:42,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:42,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:46,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:47,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:47,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-29 03:34:47,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 03:34:47,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 03:34:47,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:47,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:47,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 03:34:47,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 03:34:47,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 03:34:47,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 03:34:47,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:34:47,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:47,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:47,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:47,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:34:47,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:34:47,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 03:34:47,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:47,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:47,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:34:47,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:34:47,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:34:47,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:34:47,214 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-29 03:34:47,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [334032977] [2020-10-29 03:34:47,215 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:34:47,215 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 03:34:47,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79934335] [2020-10-29 03:34:47,218 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 03:34:47,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:34:47,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 03:34:47,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 03:34:47,230 INFO L87 Difference]: Start difference. First operand 49 states and 57 transitions. Second operand 5 states. [2020-10-29 03:34:47,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:34:47,568 INFO L93 Difference]: Finished difference Result 107 states and 128 transitions. [2020-10-29 03:34:47,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 03:34:47,569 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2020-10-29 03:34:47,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:34:47,573 INFO L225 Difference]: With dead ends: 107 [2020-10-29 03:34:47,573 INFO L226 Difference]: Without dead ends: 70 [2020-10-29 03:34:47,575 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 03:34:47,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-29 03:34:47,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 63. [2020-10-29 03:34:47,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-29 03:34:47,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 71 transitions. [2020-10-29 03:34:47,600 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 71 transitions. Word has length 43 [2020-10-29 03:34:47,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:34:47,601 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 71 transitions. [2020-10-29 03:34:47,601 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 03:34:47,601 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 71 transitions. [2020-10-29 03:34:47,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-29 03:34:47,603 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:34:47,604 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:34:47,604 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 03:34:47,604 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:34:47,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:34:47,605 INFO L82 PathProgramCache]: Analyzing trace with hash 139617246, now seen corresponding path program 2 times [2020-10-29 03:34:47,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:34:47,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1194961725] [2020-10-29 03:34:47,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:34:47,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:47,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:47,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:47,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:47,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:47,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:47,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:49,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:52,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:52,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-29 03:34:52,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 03:34:52,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 03:34:52,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:52,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:52,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 03:34:52,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:34:52,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:34:52,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:34:52,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:34:52,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:52,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:52,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:52,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:34:52,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:34:52,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:34:52,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:52,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:52,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:34:52,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:34:52,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:34:52,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:34:52,724 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-29 03:34:52,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1194961725] [2020-10-29 03:34:52,724 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:34:52,725 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 03:34:52,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892712584] [2020-10-29 03:34:52,726 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 03:34:52,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:34:52,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 03:34:52,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 03:34:52,730 INFO L87 Difference]: Start difference. First operand 63 states and 71 transitions. Second operand 6 states. [2020-10-29 03:34:53,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:34:53,032 INFO L93 Difference]: Finished difference Result 133 states and 154 transitions. [2020-10-29 03:34:53,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 03:34:53,033 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2020-10-29 03:34:53,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:34:53,035 INFO L225 Difference]: With dead ends: 133 [2020-10-29 03:34:53,035 INFO L226 Difference]: Without dead ends: 84 [2020-10-29 03:34:53,036 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 03:34:53,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-29 03:34:53,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 77. [2020-10-29 03:34:53,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-29 03:34:53,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 85 transitions. [2020-10-29 03:34:53,058 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 85 transitions. Word has length 57 [2020-10-29 03:34:53,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:34:53,059 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 85 transitions. [2020-10-29 03:34:53,059 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 03:34:53,061 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 85 transitions. [2020-10-29 03:34:53,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-29 03:34:53,064 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:34:53,066 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:34:53,066 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 03:34:53,067 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:34:53,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:34:53,068 INFO L82 PathProgramCache]: Analyzing trace with hash -277529360, now seen corresponding path program 3 times [2020-10-29 03:34:53,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:34:53,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1715420887] [2020-10-29 03:34:53,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:34:53,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:53,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:53,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:53,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:53,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:53,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:53,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:58,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:58,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 03:34:58,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:34:58,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 03:34:58,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:58,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:58,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 03:34:58,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:34:58,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 03:34:58,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:34:58,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:34:58,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:58,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:58,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:58,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:34:58,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:34:58,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:34:58,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:58,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:58,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:34:58,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:34:58,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:34:58,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:34:58,207 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2020-10-29 03:34:58,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1715420887] [2020-10-29 03:34:58,208 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:34:58,208 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 03:34:58,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993269977] [2020-10-29 03:34:58,209 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 03:34:58,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:34:58,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 03:34:58,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 03:34:58,210 INFO L87 Difference]: Start difference. First operand 77 states and 85 transitions. Second operand 7 states. [2020-10-29 03:34:58,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:34:58,498 INFO L93 Difference]: Finished difference Result 159 states and 180 transitions. [2020-10-29 03:34:58,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 03:34:58,499 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 71 [2020-10-29 03:34:58,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:34:58,500 INFO L225 Difference]: With dead ends: 159 [2020-10-29 03:34:58,500 INFO L226 Difference]: Without dead ends: 98 [2020-10-29 03:34:58,503 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 03:34:58,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-29 03:34:58,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 91. [2020-10-29 03:34:58,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-29 03:34:58,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 99 transitions. [2020-10-29 03:34:58,520 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 99 transitions. Word has length 71 [2020-10-29 03:34:58,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:34:58,520 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 99 transitions. [2020-10-29 03:34:58,520 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 03:34:58,520 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 99 transitions. [2020-10-29 03:34:58,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-29 03:34:58,523 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:34:58,523 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:34:58,523 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 03:34:58,523 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:34:58,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:34:58,524 INFO L82 PathProgramCache]: Analyzing trace with hash -1826992510, now seen corresponding path program 4 times [2020-10-29 03:34:58,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:34:58,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1450974017] [2020-10-29 03:34:58,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:34:58,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:58,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:58,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:58,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:58,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:58,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:58,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:03,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:03,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 03:35:03,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:35:03,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-29 03:35:03,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:03,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:03,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 03:35:03,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-29 03:35:03,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 03:35:03,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:35:03,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:35:03,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:03,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:03,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:03,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:35:03,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:35:03,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:35:03,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:03,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:03,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:35:03,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:35:03,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:35:03,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:35:03,689 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2020-10-29 03:35:03,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1450974017] [2020-10-29 03:35:03,690 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:35:03,690 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 03:35:03,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526848173] [2020-10-29 03:35:03,691 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 03:35:03,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:35:03,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 03:35:03,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 03:35:03,692 INFO L87 Difference]: Start difference. First operand 91 states and 99 transitions. Second operand 8 states. [2020-10-29 03:35:03,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:35:03,995 INFO L93 Difference]: Finished difference Result 185 states and 206 transitions. [2020-10-29 03:35:03,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 03:35:03,995 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 85 [2020-10-29 03:35:03,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:35:03,998 INFO L225 Difference]: With dead ends: 185 [2020-10-29 03:35:03,998 INFO L226 Difference]: Without dead ends: 112 [2020-10-29 03:35:03,999 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 03:35:04,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-10-29 03:35:04,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 105. [2020-10-29 03:35:04,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-29 03:35:04,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 113 transitions. [2020-10-29 03:35:04,019 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 113 transitions. Word has length 85 [2020-10-29 03:35:04,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:35:04,023 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 113 transitions. [2020-10-29 03:35:04,023 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 03:35:04,024 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 113 transitions. [2020-10-29 03:35:04,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-29 03:35:04,025 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:35:04,025 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:35:04,026 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 03:35:04,026 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:35:04,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:35:04,026 INFO L82 PathProgramCache]: Analyzing trace with hash 1405401236, now seen corresponding path program 5 times [2020-10-29 03:35:04,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:35:04,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [439138689] [2020-10-29 03:35:04,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:35:04,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:04,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:04,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:04,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:04,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:04,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:04,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:09,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:09,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-29 03:35:09,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:35:09,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-29 03:35:09,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:09,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:09,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 03:35:09,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-29 03:35:09,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 03:35:09,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:35:09,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:35:09,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:09,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:09,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:09,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:35:09,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:35:09,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:35:09,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:09,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:09,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:35:09,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:35:09,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:35:09,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:35:09,211 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2020-10-29 03:35:09,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [439138689] [2020-10-29 03:35:09,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:35:09,213 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 03:35:09,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923673246] [2020-10-29 03:35:09,213 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 03:35:09,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:35:09,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 03:35:09,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-29 03:35:09,215 INFO L87 Difference]: Start difference. First operand 105 states and 113 transitions. Second operand 9 states. [2020-10-29 03:35:09,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:35:09,643 INFO L93 Difference]: Finished difference Result 211 states and 232 transitions. [2020-10-29 03:35:09,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 03:35:09,643 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 99 [2020-10-29 03:35:09,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:35:09,645 INFO L225 Difference]: With dead ends: 211 [2020-10-29 03:35:09,645 INFO L226 Difference]: Without dead ends: 126 [2020-10-29 03:35:09,646 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-29 03:35:09,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-29 03:35:09,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 119. [2020-10-29 03:35:09,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-29 03:35:09,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 127 transitions. [2020-10-29 03:35:09,658 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 127 transitions. Word has length 99 [2020-10-29 03:35:09,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:35:09,658 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 127 transitions. [2020-10-29 03:35:09,658 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 03:35:09,659 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 127 transitions. [2020-10-29 03:35:09,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-29 03:35:09,660 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:35:09,661 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:35:09,661 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 03:35:09,661 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:35:09,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:35:09,662 INFO L82 PathProgramCache]: Analyzing trace with hash -234906842, now seen corresponding path program 6 times [2020-10-29 03:35:09,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:35:09,662 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [493682543] [2020-10-29 03:35:09,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:35:09,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:09,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:09,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:09,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:09,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:09,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:10,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:14,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:14,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-29 03:35:14,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:35:14,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 03:35:14,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:14,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:14,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 03:35:14,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:35:14,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 03:35:14,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:14,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:35:14,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:14,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:14,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:14,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:35:14,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:35:14,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:35:14,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:14,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:14,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:35:14,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:35:14,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:35:14,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:14,832 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2020-10-29 03:35:14,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [493682543] [2020-10-29 03:35:14,833 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:35:14,833 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 03:35:14,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396419179] [2020-10-29 03:35:14,834 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 03:35:14,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:35:14,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 03:35:14,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:35:14,836 INFO L87 Difference]: Start difference. First operand 119 states and 127 transitions. Second operand 10 states. [2020-10-29 03:35:15,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:35:15,211 INFO L93 Difference]: Finished difference Result 237 states and 258 transitions. [2020-10-29 03:35:15,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 03:35:15,212 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 113 [2020-10-29 03:35:15,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:35:15,213 INFO L225 Difference]: With dead ends: 237 [2020-10-29 03:35:15,213 INFO L226 Difference]: Without dead ends: 140 [2020-10-29 03:35:15,215 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:35:15,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-29 03:35:15,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 133. [2020-10-29 03:35:15,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-10-29 03:35:15,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 141 transitions. [2020-10-29 03:35:15,237 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 141 transitions. Word has length 113 [2020-10-29 03:35:15,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:35:15,237 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 141 transitions. [2020-10-29 03:35:15,237 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 03:35:15,237 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 141 transitions. [2020-10-29 03:35:15,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-29 03:35:15,239 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:35:15,239 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:35:15,239 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 03:35:15,240 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:35:15,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:35:15,240 INFO L82 PathProgramCache]: Analyzing trace with hash -530704840, now seen corresponding path program 7 times [2020-10-29 03:35:15,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:35:15,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [677430762] [2020-10-29 03:35:15,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:35:15,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:15,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:15,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:15,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:15,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:15,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:20,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:20,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-29 03:35:20,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:35:20,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 03:35:20,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:20,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:20,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 03:35:20,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-29 03:35:20,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 03:35:20,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:20,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:35:20,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:20,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:20,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:20,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:35:20,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:35:20,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:35:20,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:20,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:20,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:35:20,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:35:20,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:35:20,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:35:20,460 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2020-10-29 03:35:20,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [677430762] [2020-10-29 03:35:20,460 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:35:20,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 03:35:20,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656580763] [2020-10-29 03:35:20,463 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 03:35:20,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:35:20,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 03:35:20,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-29 03:35:20,466 INFO L87 Difference]: Start difference. First operand 133 states and 141 transitions. Second operand 11 states. [2020-10-29 03:35:21,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:35:21,075 INFO L93 Difference]: Finished difference Result 263 states and 284 transitions. [2020-10-29 03:35:21,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 03:35:21,076 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 127 [2020-10-29 03:35:21,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:35:21,079 INFO L225 Difference]: With dead ends: 263 [2020-10-29 03:35:21,079 INFO L226 Difference]: Without dead ends: 154 [2020-10-29 03:35:21,080 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-29 03:35:21,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-29 03:35:21,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 147. [2020-10-29 03:35:21,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-29 03:35:21,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 155 transitions. [2020-10-29 03:35:21,108 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 155 transitions. Word has length 127 [2020-10-29 03:35:21,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:35:21,108 INFO L481 AbstractCegarLoop]: Abstraction has 147 states and 155 transitions. [2020-10-29 03:35:21,108 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 03:35:21,108 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 155 transitions. [2020-10-29 03:35:21,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-29 03:35:21,112 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:35:21,112 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:35:21,113 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 03:35:21,113 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:35:21,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:35:21,115 INFO L82 PathProgramCache]: Analyzing trace with hash 360401354, now seen corresponding path program 8 times [2020-10-29 03:35:21,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:35:21,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [467040400] [2020-10-29 03:35:21,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:35:21,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:21,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:21,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:21,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:21,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:21,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:26,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:26,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-29 03:35:26,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:35:26,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-29 03:35:26,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:26,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:26,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 03:35:26,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:35:26,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 03:35:26,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:26,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:35:26,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:26,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:26,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:26,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:35:26,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:35:26,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:35:26,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:26,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:26,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:35:26,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:35:26,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:35:26,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:26,328 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 384 trivial. 0 not checked. [2020-10-29 03:35:26,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [467040400] [2020-10-29 03:35:26,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:35:26,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 03:35:26,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237893321] [2020-10-29 03:35:26,331 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 03:35:26,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:35:26,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 03:35:26,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:35:26,337 INFO L87 Difference]: Start difference. First operand 147 states and 155 transitions. Second operand 12 states. [2020-10-29 03:35:26,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:35:26,831 INFO L93 Difference]: Finished difference Result 289 states and 310 transitions. [2020-10-29 03:35:26,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 03:35:26,831 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 141 [2020-10-29 03:35:26,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:35:26,835 INFO L225 Difference]: With dead ends: 289 [2020-10-29 03:35:26,835 INFO L226 Difference]: Without dead ends: 168 [2020-10-29 03:35:26,836 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:35:26,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-10-29 03:35:26,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 161. [2020-10-29 03:35:26,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-29 03:35:26,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 169 transitions. [2020-10-29 03:35:26,847 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 169 transitions. Word has length 141 [2020-10-29 03:35:26,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:35:26,847 INFO L481 AbstractCegarLoop]: Abstraction has 161 states and 169 transitions. [2020-10-29 03:35:26,847 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 03:35:26,847 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 169 transitions. [2020-10-29 03:35:26,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-29 03:35:26,849 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:35:26,849 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:35:26,850 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 03:35:26,850 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:35:26,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:35:26,851 INFO L82 PathProgramCache]: Analyzing trace with hash 1576687068, now seen corresponding path program 9 times [2020-10-29 03:35:26,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:35:26,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [309044145] [2020-10-29 03:35:26,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:35:26,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:26,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:26,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:26,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:26,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:27,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:31,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:31,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-29 03:35:31,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:35:31,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5111 [2020-10-29 03:35:31,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:31,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:31,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 03:35:31,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:35:31,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 03:35:31,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:32,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:35:32,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:32,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:32,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:32,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:35:32,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:35:32,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:35:32,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:32,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:32,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:35:32,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:35:32,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:35:32,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:32,163 INFO L134 CoverageAnalysis]: Checked inductivity of 567 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 486 trivial. 0 not checked. [2020-10-29 03:35:32,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [309044145] [2020-10-29 03:35:32,164 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:35:32,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 03:35:32,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947473004] [2020-10-29 03:35:32,165 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 03:35:32,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:35:32,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 03:35:32,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-29 03:35:32,167 INFO L87 Difference]: Start difference. First operand 161 states and 169 transitions. Second operand 13 states. [2020-10-29 03:35:32,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:35:32,679 INFO L93 Difference]: Finished difference Result 315 states and 336 transitions. [2020-10-29 03:35:32,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 03:35:32,680 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 155 [2020-10-29 03:35:32,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:35:32,681 INFO L225 Difference]: With dead ends: 315 [2020-10-29 03:35:32,681 INFO L226 Difference]: Without dead ends: 182 [2020-10-29 03:35:32,682 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-29 03:35:32,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-10-29 03:35:32,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 175. [2020-10-29 03:35:32,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-10-29 03:35:32,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 183 transitions. [2020-10-29 03:35:32,693 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 183 transitions. Word has length 155 [2020-10-29 03:35:32,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:35:32,693 INFO L481 AbstractCegarLoop]: Abstraction has 175 states and 183 transitions. [2020-10-29 03:35:32,693 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 03:35:32,693 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 183 transitions. [2020-10-29 03:35:32,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-29 03:35:32,695 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:35:32,696 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:35:32,696 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 03:35:32,696 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:35:32,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:35:32,697 INFO L82 PathProgramCache]: Analyzing trace with hash 780556910, now seen corresponding path program 10 times [2020-10-29 03:35:32,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:35:32,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [145569470] [2020-10-29 03:35:32,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:35:32,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:32,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:32,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:32,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:32,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:32,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:37,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:37,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-29 03:35:37,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:35:37,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-29 03:35:37,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:37,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:37,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 03:35:37,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-29 03:35:37,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 03:35:37,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:37,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:35:37,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:37,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:37,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:37,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:35:37,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:35:37,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:35:37,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:37,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:37,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:35:37,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:35:37,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:35:37,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:37,963 INFO L134 CoverageAnalysis]: Checked inductivity of 700 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 600 trivial. 0 not checked. [2020-10-29 03:35:37,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [145569470] [2020-10-29 03:35:37,964 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:35:37,964 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 03:35:37,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218332690] [2020-10-29 03:35:37,964 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 03:35:37,965 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:35:37,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 03:35:37,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:35:37,966 INFO L87 Difference]: Start difference. First operand 175 states and 183 transitions. Second operand 14 states. [2020-10-29 03:35:38,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:35:38,610 INFO L93 Difference]: Finished difference Result 341 states and 362 transitions. [2020-10-29 03:35:38,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 03:35:38,611 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 169 [2020-10-29 03:35:38,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:35:38,613 INFO L225 Difference]: With dead ends: 341 [2020-10-29 03:35:38,613 INFO L226 Difference]: Without dead ends: 196 [2020-10-29 03:35:38,614 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:35:38,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-10-29 03:35:38,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 189. [2020-10-29 03:35:38,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-10-29 03:35:38,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 197 transitions. [2020-10-29 03:35:38,622 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 197 transitions. Word has length 169 [2020-10-29 03:35:38,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:35:38,622 INFO L481 AbstractCegarLoop]: Abstraction has 189 states and 197 transitions. [2020-10-29 03:35:38,622 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 03:35:38,622 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 197 transitions. [2020-10-29 03:35:38,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-10-29 03:35:38,624 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:35:38,625 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:35:38,625 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 03:35:38,625 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:35:38,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:35:38,626 INFO L82 PathProgramCache]: Analyzing trace with hash -170756224, now seen corresponding path program 11 times [2020-10-29 03:35:38,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:35:38,626 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [224297292] [2020-10-29 03:35:38,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:35:38,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:38,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:38,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:38,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:38,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:38,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:43,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:43,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-10-29 03:35:43,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:35:43,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5271 [2020-10-29 03:35:43,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:43,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:43,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 03:35:43,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-29 03:35:43,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 03:35:43,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:44,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:35:44,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:44,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:44,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:44,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:35:44,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:35:44,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:35:44,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:44,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:44,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:35:44,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:35:44,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:35:44,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:44,144 INFO L134 CoverageAnalysis]: Checked inductivity of 847 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 726 trivial. 0 not checked. [2020-10-29 03:35:44,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [224297292] [2020-10-29 03:35:44,144 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:35:44,144 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 03:35:44,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967731461] [2020-10-29 03:35:44,145 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 03:35:44,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:35:44,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 03:35:44,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-29 03:35:44,146 INFO L87 Difference]: Start difference. First operand 189 states and 197 transitions. Second operand 15 states. [2020-10-29 03:35:44,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:35:44,781 INFO L93 Difference]: Finished difference Result 367 states and 388 transitions. [2020-10-29 03:35:44,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 03:35:44,782 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 183 [2020-10-29 03:35:44,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:35:44,783 INFO L225 Difference]: With dead ends: 367 [2020-10-29 03:35:44,783 INFO L226 Difference]: Without dead ends: 210 [2020-10-29 03:35:44,784 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-29 03:35:44,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-10-29 03:35:44,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 203. [2020-10-29 03:35:44,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-10-29 03:35:44,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 211 transitions. [2020-10-29 03:35:44,793 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 211 transitions. Word has length 183 [2020-10-29 03:35:44,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:35:44,794 INFO L481 AbstractCegarLoop]: Abstraction has 203 states and 211 transitions. [2020-10-29 03:35:44,794 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 03:35:44,794 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 211 transitions. [2020-10-29 03:35:44,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-10-29 03:35:44,796 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:35:44,796 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:35:44,797 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 03:35:44,797 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:35:44,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:35:44,797 INFO L82 PathProgramCache]: Analyzing trace with hash -291910382, now seen corresponding path program 12 times [2020-10-29 03:35:44,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:35:44,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [203580943] [2020-10-29 03:35:44,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:35:44,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:44,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:44,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:44,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:44,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:45,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:49,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:49,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-10-29 03:35:49,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:35:49,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5178 [2020-10-29 03:35:49,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:49,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:49,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 03:35:49,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-10-29 03:35:49,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 03:35:49,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:50,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:35:50,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:50,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:50,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:50,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:35:50,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:35:50,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:35:50,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:50,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:50,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:35:50,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:35:50,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:35:50,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:50,239 INFO L134 CoverageAnalysis]: Checked inductivity of 1008 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 864 trivial. 0 not checked. [2020-10-29 03:35:50,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [203580943] [2020-10-29 03:35:50,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:35:50,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 03:35:50,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000860982] [2020-10-29 03:35:50,241 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 03:35:50,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:35:50,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 03:35:50,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:35:50,242 INFO L87 Difference]: Start difference. First operand 203 states and 211 transitions. Second operand 16 states. [2020-10-29 03:35:50,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:35:50,866 INFO L93 Difference]: Finished difference Result 393 states and 414 transitions. [2020-10-29 03:35:50,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 03:35:50,866 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 197 [2020-10-29 03:35:50,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:35:50,869 INFO L225 Difference]: With dead ends: 393 [2020-10-29 03:35:50,869 INFO L226 Difference]: Without dead ends: 224 [2020-10-29 03:35:50,870 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:35:50,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-10-29 03:35:50,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 217. [2020-10-29 03:35:50,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-10-29 03:35:50,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 225 transitions. [2020-10-29 03:35:50,879 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 225 transitions. Word has length 197 [2020-10-29 03:35:50,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:35:50,880 INFO L481 AbstractCegarLoop]: Abstraction has 217 states and 225 transitions. [2020-10-29 03:35:50,880 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 03:35:50,880 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 225 transitions. [2020-10-29 03:35:50,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-10-29 03:35:50,882 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:35:50,883 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:35:50,883 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 03:35:50,883 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:35:50,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:35:50,884 INFO L82 PathProgramCache]: Analyzing trace with hash 1906277156, now seen corresponding path program 13 times [2020-10-29 03:35:50,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:35:50,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [592993276] [2020-10-29 03:35:50,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:35:50,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:50,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:50,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:50,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:51,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:51,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:56,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:56,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 221 [2020-10-29 03:35:56,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:35:56,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5147 [2020-10-29 03:35:56,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:56,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:56,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 03:35:56,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-29 03:35:56,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 03:35:56,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:56,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:35:56,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:56,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:56,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:56,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:35:56,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:35:56,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:35:56,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:56,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:56,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:35:56,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:35:56,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:35:56,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:56,335 INFO L134 CoverageAnalysis]: Checked inductivity of 1183 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 1014 trivial. 0 not checked. [2020-10-29 03:35:56,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [592993276] [2020-10-29 03:35:56,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:35:56,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 03:35:56,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246500306] [2020-10-29 03:35:56,337 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 03:35:56,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:35:56,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 03:35:56,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:35:56,338 INFO L87 Difference]: Start difference. First operand 217 states and 225 transitions. Second operand 17 states. [2020-10-29 03:35:57,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:35:57,091 INFO L93 Difference]: Finished difference Result 419 states and 440 transitions. [2020-10-29 03:35:57,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 03:35:57,091 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 211 [2020-10-29 03:35:57,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:35:57,094 INFO L225 Difference]: With dead ends: 419 [2020-10-29 03:35:57,094 INFO L226 Difference]: Without dead ends: 238 [2020-10-29 03:35:57,095 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:35:57,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-10-29 03:35:57,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 231. [2020-10-29 03:35:57,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2020-10-29 03:35:57,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 239 transitions. [2020-10-29 03:35:57,108 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 239 transitions. Word has length 211 [2020-10-29 03:35:57,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:35:57,109 INFO L481 AbstractCegarLoop]: Abstraction has 231 states and 239 transitions. [2020-10-29 03:35:57,109 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 03:35:57,109 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 239 transitions. [2020-10-29 03:35:57,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-10-29 03:35:57,119 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:35:57,119 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:35:57,120 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 03:35:57,120 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:35:57,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:35:57,121 INFO L82 PathProgramCache]: Analyzing trace with hash -944856650, now seen corresponding path program 14 times [2020-10-29 03:35:57,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:35:57,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1097678723] [2020-10-29 03:35:57,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:35:57,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:57,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:57,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:57,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:57,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:57,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:02,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:02,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-10-29 03:36:02,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:36:02,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5075 [2020-10-29 03:36:02,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:02,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:02,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 03:36:02,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:36:02,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 03:36:02,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:02,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:36:02,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:02,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:02,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:02,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:36:02,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:36:02,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:36:02,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:02,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:02,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:36:02,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:36:02,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:36:02,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:02,519 INFO L134 CoverageAnalysis]: Checked inductivity of 1372 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 1176 trivial. 0 not checked. [2020-10-29 03:36:02,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1097678723] [2020-10-29 03:36:02,520 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:36:02,520 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 03:36:02,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359014518] [2020-10-29 03:36:02,520 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 03:36:02,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:36:02,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 03:36:02,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-29 03:36:02,522 INFO L87 Difference]: Start difference. First operand 231 states and 239 transitions. Second operand 18 states. [2020-10-29 03:36:03,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:36:03,244 INFO L93 Difference]: Finished difference Result 445 states and 466 transitions. [2020-10-29 03:36:03,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 03:36:03,245 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 225 [2020-10-29 03:36:03,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:36:03,247 INFO L225 Difference]: With dead ends: 445 [2020-10-29 03:36:03,247 INFO L226 Difference]: Without dead ends: 252 [2020-10-29 03:36:03,248 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-29 03:36:03,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2020-10-29 03:36:03,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 245. [2020-10-29 03:36:03,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2020-10-29 03:36:03,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 253 transitions. [2020-10-29 03:36:03,278 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 253 transitions. Word has length 225 [2020-10-29 03:36:03,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:36:03,279 INFO L481 AbstractCegarLoop]: Abstraction has 245 states and 253 transitions. [2020-10-29 03:36:03,279 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 03:36:03,279 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 253 transitions. [2020-10-29 03:36:03,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-10-29 03:36:03,281 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:36:03,283 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:36:03,283 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 03:36:03,283 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:36:03,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:36:03,284 INFO L82 PathProgramCache]: Analyzing trace with hash 2073714888, now seen corresponding path program 15 times [2020-10-29 03:36:03,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:36:03,284 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [392406128] [2020-10-29 03:36:03,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:36:03,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:03,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:03,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:03,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:03,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:03,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:08,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:08,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 249 [2020-10-29 03:36:08,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:36:08,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5303 [2020-10-29 03:36:08,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:08,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:08,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 03:36:08,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-29 03:36:08,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 03:36:08,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:08,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:36:08,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:08,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:08,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:08,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:36:08,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:36:08,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:36:08,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:08,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:08,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:36:08,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:36:08,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:36:08,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:08,946 INFO L134 CoverageAnalysis]: Checked inductivity of 1575 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 1350 trivial. 0 not checked. [2020-10-29 03:36:08,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [392406128] [2020-10-29 03:36:08,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:36:08,947 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-29 03:36:08,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571459245] [2020-10-29 03:36:08,947 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 03:36:08,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:36:08,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 03:36:08,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-29 03:36:08,949 INFO L87 Difference]: Start difference. First operand 245 states and 253 transitions. Second operand 19 states. [2020-10-29 03:36:09,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:36:09,687 INFO L93 Difference]: Finished difference Result 471 states and 492 transitions. [2020-10-29 03:36:09,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 03:36:09,688 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 239 [2020-10-29 03:36:09,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:36:09,690 INFO L225 Difference]: With dead ends: 471 [2020-10-29 03:36:09,690 INFO L226 Difference]: Without dead ends: 266 [2020-10-29 03:36:09,691 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-29 03:36:09,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-10-29 03:36:09,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 259. [2020-10-29 03:36:09,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2020-10-29 03:36:09,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 267 transitions. [2020-10-29 03:36:09,703 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 267 transitions. Word has length 239 [2020-10-29 03:36:09,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:36:09,703 INFO L481 AbstractCegarLoop]: Abstraction has 259 states and 267 transitions. [2020-10-29 03:36:09,703 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 03:36:09,704 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 267 transitions. [2020-10-29 03:36:09,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2020-10-29 03:36:09,705 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:36:09,706 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:36:09,706 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 03:36:09,706 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:36:09,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:36:09,707 INFO L82 PathProgramCache]: Analyzing trace with hash 742250586, now seen corresponding path program 16 times [2020-10-29 03:36:09,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:36:09,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [475171136] [2020-10-29 03:36:09,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:36:09,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:09,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:09,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:09,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:09,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:09,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:14,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:14,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-29 03:36:14,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:36:14,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5166 [2020-10-29 03:36:14,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:14,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:14,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 03:36:14,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-29 03:36:14,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 03:36:14,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:15,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:36:15,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:15,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:15,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:15,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:36:15,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:36:15,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:36:15,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:15,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:15,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:36:15,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:36:15,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:36:15,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:15,234 INFO L134 CoverageAnalysis]: Checked inductivity of 1792 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 1536 trivial. 0 not checked. [2020-10-29 03:36:15,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [475171136] [2020-10-29 03:36:15,234 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:36:15,234 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-29 03:36:15,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483355761] [2020-10-29 03:36:15,235 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-29 03:36:15,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:36:15,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-29 03:36:15,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-29 03:36:15,236 INFO L87 Difference]: Start difference. First operand 259 states and 267 transitions. Second operand 20 states. [2020-10-29 03:36:16,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:36:16,114 INFO L93 Difference]: Finished difference Result 497 states and 518 transitions. [2020-10-29 03:36:16,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 03:36:16,115 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 253 [2020-10-29 03:36:16,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:36:16,117 INFO L225 Difference]: With dead ends: 497 [2020-10-29 03:36:16,117 INFO L226 Difference]: Without dead ends: 280 [2020-10-29 03:36:16,118 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-29 03:36:16,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2020-10-29 03:36:16,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 273. [2020-10-29 03:36:16,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273 states. [2020-10-29 03:36:16,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 281 transitions. [2020-10-29 03:36:16,138 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 281 transitions. Word has length 253 [2020-10-29 03:36:16,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:36:16,138 INFO L481 AbstractCegarLoop]: Abstraction has 273 states and 281 transitions. [2020-10-29 03:36:16,138 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-29 03:36:16,139 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 281 transitions. [2020-10-29 03:36:16,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2020-10-29 03:36:16,140 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:36:16,141 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:36:16,141 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 03:36:16,141 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:36:16,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:36:16,142 INFO L82 PathProgramCache]: Analyzing trace with hash -562288532, now seen corresponding path program 17 times [2020-10-29 03:36:16,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:36:16,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1513733642] [2020-10-29 03:36:16,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:36:16,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:16,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:16,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:16,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:16,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:16,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:21,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:21,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-10-29 03:36:21,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:36:21,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5169 [2020-10-29 03:36:21,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:21,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:21,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 03:36:21,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:36:21,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 03:36:21,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:21,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:36:21,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:21,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:21,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:21,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:36:21,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:36:21,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:36:21,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:21,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:21,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:36:21,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:36:21,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:36:21,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:21,724 INFO L134 CoverageAnalysis]: Checked inductivity of 2023 backedges. 0 proven. 289 refuted. 0 times theorem prover too weak. 1734 trivial. 0 not checked. [2020-10-29 03:36:21,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1513733642] [2020-10-29 03:36:21,724 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:36:21,724 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-29 03:36:21,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683919145] [2020-10-29 03:36:21,725 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-29 03:36:21,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:36:21,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-29 03:36:21,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-29 03:36:21,726 INFO L87 Difference]: Start difference. First operand 273 states and 281 transitions. Second operand 21 states. [2020-10-29 03:36:22,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:36:22,633 INFO L93 Difference]: Finished difference Result 523 states and 544 transitions. [2020-10-29 03:36:22,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 03:36:22,634 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 267 [2020-10-29 03:36:22,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:36:22,636 INFO L225 Difference]: With dead ends: 523 [2020-10-29 03:36:22,636 INFO L226 Difference]: Without dead ends: 294 [2020-10-29 03:36:22,638 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-29 03:36:22,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2020-10-29 03:36:22,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 287. [2020-10-29 03:36:22,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-10-29 03:36:22,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 295 transitions. [2020-10-29 03:36:22,649 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 295 transitions. Word has length 267 [2020-10-29 03:36:22,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:36:22,650 INFO L481 AbstractCegarLoop]: Abstraction has 287 states and 295 transitions. [2020-10-29 03:36:22,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-29 03:36:22,650 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 295 transitions. [2020-10-29 03:36:22,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2020-10-29 03:36:22,651 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:36:22,652 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:36:22,652 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 03:36:22,652 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:36:22,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:36:22,653 INFO L82 PathProgramCache]: Analyzing trace with hash -817860354, now seen corresponding path program 18 times [2020-10-29 03:36:22,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:36:22,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1973730577] [2020-10-29 03:36:22,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:36:22,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:22,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:22,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:22,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:22,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:22,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:28,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:28,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 291 [2020-10-29 03:36:28,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:36:28,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6259 [2020-10-29 03:36:28,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:28,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:28,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 03:36:28,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-29 03:36:28,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 03:36:28,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:29,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:36:29,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:29,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:29,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:29,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:36:29,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:36:29,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:36:29,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:29,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:29,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:36:29,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:36:29,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:36:29,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:29,367 INFO L134 CoverageAnalysis]: Checked inductivity of 2268 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 1944 trivial. 0 not checked. [2020-10-29 03:36:29,368 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1973730577] [2020-10-29 03:36:29,368 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:36:29,368 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-29 03:36:29,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74189183] [2020-10-29 03:36:29,369 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-29 03:36:29,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:36:29,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-29 03:36:29,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-29 03:36:29,370 INFO L87 Difference]: Start difference. First operand 287 states and 295 transitions. Second operand 22 states. [2020-10-29 03:36:30,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:36:30,196 INFO L93 Difference]: Finished difference Result 549 states and 570 transitions. [2020-10-29 03:36:30,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 03:36:30,196 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 281 [2020-10-29 03:36:30,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:36:30,198 INFO L225 Difference]: With dead ends: 549 [2020-10-29 03:36:30,198 INFO L226 Difference]: Without dead ends: 308 [2020-10-29 03:36:30,200 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-29 03:36:30,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2020-10-29 03:36:30,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 301. [2020-10-29 03:36:30,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2020-10-29 03:36:30,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 309 transitions. [2020-10-29 03:36:30,217 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 309 transitions. Word has length 281 [2020-10-29 03:36:30,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:36:30,217 INFO L481 AbstractCegarLoop]: Abstraction has 301 states and 309 transitions. [2020-10-29 03:36:30,217 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-29 03:36:30,217 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 309 transitions. [2020-10-29 03:36:30,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2020-10-29 03:36:30,219 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:36:30,220 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:36:30,220 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 03:36:30,220 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:36:30,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:36:30,221 INFO L82 PathProgramCache]: Analyzing trace with hash -981609968, now seen corresponding path program 19 times [2020-10-29 03:36:30,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:36:30,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1073523487] [2020-10-29 03:36:30,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:36:30,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:30,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:30,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:30,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:30,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:30,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:35,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:35,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 305 [2020-10-29 03:36:35,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:36:35,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5092 [2020-10-29 03:36:35,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:35,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:35,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 03:36:35,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 133 [2020-10-29 03:36:35,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 03:36:35,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:35,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:36:35,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:35,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:35,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:35,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:36:35,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:36:35,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:36:35,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:35,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:35,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:36:35,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:36:35,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:36:35,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:35,796 INFO L134 CoverageAnalysis]: Checked inductivity of 2527 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 2166 trivial. 0 not checked. [2020-10-29 03:36:35,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1073523487] [2020-10-29 03:36:35,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:36:35,796 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-29 03:36:35,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791481407] [2020-10-29 03:36:35,797 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-29 03:36:35,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:36:35,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-29 03:36:35,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-29 03:36:35,798 INFO L87 Difference]: Start difference. First operand 301 states and 309 transitions. Second operand 23 states. [2020-10-29 03:36:36,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:36:36,721 INFO L93 Difference]: Finished difference Result 575 states and 596 transitions. [2020-10-29 03:36:36,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-29 03:36:36,722 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 295 [2020-10-29 03:36:36,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:36:36,725 INFO L225 Difference]: With dead ends: 575 [2020-10-29 03:36:36,725 INFO L226 Difference]: Without dead ends: 322 [2020-10-29 03:36:36,727 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-29 03:36:36,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2020-10-29 03:36:36,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 315. [2020-10-29 03:36:36,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2020-10-29 03:36:36,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 323 transitions. [2020-10-29 03:36:36,739 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 323 transitions. Word has length 295 [2020-10-29 03:36:36,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:36:36,739 INFO L481 AbstractCegarLoop]: Abstraction has 315 states and 323 transitions. [2020-10-29 03:36:36,739 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-29 03:36:36,739 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 323 transitions. [2020-10-29 03:36:36,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2020-10-29 03:36:36,743 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:36:36,743 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:36:36,744 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 03:36:36,744 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:36:36,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:36:36,744 INFO L82 PathProgramCache]: Analyzing trace with hash -466654302, now seen corresponding path program 20 times [2020-10-29 03:36:36,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:36:36,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1576296492] [2020-10-29 03:36:36,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:36:36,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:36,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:36,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:36,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:37,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:37,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:41,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:41,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 319 [2020-10-29 03:36:41,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:36:41,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-29 03:36:41,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:41,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:41,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 03:36:41,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-29 03:36:41,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-29 03:36:41,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:42,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:36:42,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:42,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:42,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:42,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:36:42,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:36:42,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:36:42,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:42,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:42,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:36:42,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:36:42,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:36:42,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:36:42,461 INFO L134 CoverageAnalysis]: Checked inductivity of 2800 backedges. 0 proven. 400 refuted. 0 times theorem prover too weak. 2400 trivial. 0 not checked. [2020-10-29 03:36:42,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1576296492] [2020-10-29 03:36:42,463 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:36:42,463 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-29 03:36:42,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590509915] [2020-10-29 03:36:42,465 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-29 03:36:42,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:36:42,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-29 03:36:42,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-29 03:36:42,466 INFO L87 Difference]: Start difference. First operand 315 states and 323 transitions. Second operand 24 states. [2020-10-29 03:36:43,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:36:43,530 INFO L93 Difference]: Finished difference Result 601 states and 622 transitions. [2020-10-29 03:36:43,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-29 03:36:43,531 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 309 [2020-10-29 03:36:43,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:36:43,533 INFO L225 Difference]: With dead ends: 601 [2020-10-29 03:36:43,533 INFO L226 Difference]: Without dead ends: 336 [2020-10-29 03:36:43,534 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-29 03:36:43,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2020-10-29 03:36:43,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 329. [2020-10-29 03:36:43,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 329 states. [2020-10-29 03:36:43,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 337 transitions. [2020-10-29 03:36:43,547 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 337 transitions. Word has length 309 [2020-10-29 03:36:43,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:36:43,548 INFO L481 AbstractCegarLoop]: Abstraction has 329 states and 337 transitions. [2020-10-29 03:36:43,548 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-29 03:36:43,548 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 337 transitions. [2020-10-29 03:36:43,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2020-10-29 03:36:43,550 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:36:43,550 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:36:43,550 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-29 03:36:43,550 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:36:43,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:36:43,551 INFO L82 PathProgramCache]: Analyzing trace with hash -61317708, now seen corresponding path program 21 times [2020-10-29 03:36:43,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:36:43,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2037614361] [2020-10-29 03:36:43,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:36:43,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:43,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:43,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:43,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:43,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:44,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:48,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:48,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 333 [2020-10-29 03:36:48,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:36:48,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5197 [2020-10-29 03:36:48,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:48,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:48,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 03:36:48,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 145 [2020-10-29 03:36:48,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 03:36:48,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:49,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:36:49,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:49,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:49,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:49,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:36:49,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:36:49,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:36:49,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:49,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:49,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:36:49,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:36:49,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:36:49,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:36:49,447 INFO L134 CoverageAnalysis]: Checked inductivity of 3087 backedges. 0 proven. 441 refuted. 0 times theorem prover too weak. 2646 trivial. 0 not checked. [2020-10-29 03:36:49,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2037614361] [2020-10-29 03:36:49,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:36:49,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-29 03:36:49,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738555812] [2020-10-29 03:36:49,449 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-29 03:36:49,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:36:49,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-29 03:36:49,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-29 03:36:49,450 INFO L87 Difference]: Start difference. First operand 329 states and 337 transitions. Second operand 25 states. [2020-10-29 03:36:50,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:36:50,380 INFO L93 Difference]: Finished difference Result 627 states and 648 transitions. [2020-10-29 03:36:50,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 03:36:50,384 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 323 [2020-10-29 03:36:50,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:36:50,385 INFO L225 Difference]: With dead ends: 627 [2020-10-29 03:36:50,385 INFO L226 Difference]: Without dead ends: 350 [2020-10-29 03:36:50,386 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-29 03:36:50,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2020-10-29 03:36:50,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 343. [2020-10-29 03:36:50,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2020-10-29 03:36:50,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 351 transitions. [2020-10-29 03:36:50,399 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 351 transitions. Word has length 323 [2020-10-29 03:36:50,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:36:50,399 INFO L481 AbstractCegarLoop]: Abstraction has 343 states and 351 transitions. [2020-10-29 03:36:50,399 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-29 03:36:50,399 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 351 transitions. [2020-10-29 03:36:50,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2020-10-29 03:36:50,401 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:36:50,401 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:36:50,402 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-29 03:36:50,402 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:36:50,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:36:50,402 INFO L82 PathProgramCache]: Analyzing trace with hash 1594083398, now seen corresponding path program 22 times [2020-10-29 03:36:50,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:36:50,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [980957976] [2020-10-29 03:36:50,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:36:50,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:50,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:50,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:50,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:50,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:50,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:55,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:55,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 347 [2020-10-29 03:36:55,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:36:55,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5264 [2020-10-29 03:36:55,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:55,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:55,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 03:36:55,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-29 03:36:55,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 03:36:55,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:56,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:36:56,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:56,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:56,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:56,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:36:56,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:36:56,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:36:56,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:56,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:56,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:36:56,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:36:56,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:36:56,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:56,276 INFO L134 CoverageAnalysis]: Checked inductivity of 3388 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 2904 trivial. 0 not checked. [2020-10-29 03:36:56,277 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [980957976] [2020-10-29 03:36:56,277 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:36:56,277 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-29 03:36:56,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128629054] [2020-10-29 03:36:56,278 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-29 03:36:56,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:36:56,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-29 03:36:56,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-29 03:36:56,287 INFO L87 Difference]: Start difference. First operand 343 states and 351 transitions. Second operand 26 states. [2020-10-29 03:36:57,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:36:57,301 INFO L93 Difference]: Finished difference Result 653 states and 674 transitions. [2020-10-29 03:36:57,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-29 03:36:57,302 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 337 [2020-10-29 03:36:57,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:36:57,305 INFO L225 Difference]: With dead ends: 653 [2020-10-29 03:36:57,305 INFO L226 Difference]: Without dead ends: 364 [2020-10-29 03:36:57,307 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-29 03:36:57,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2020-10-29 03:36:57,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 357. [2020-10-29 03:36:57,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 357 states. [2020-10-29 03:36:57,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 365 transitions. [2020-10-29 03:36:57,319 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 365 transitions. Word has length 337 [2020-10-29 03:36:57,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:36:57,320 INFO L481 AbstractCegarLoop]: Abstraction has 357 states and 365 transitions. [2020-10-29 03:36:57,320 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-29 03:36:57,320 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 365 transitions. [2020-10-29 03:36:57,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2020-10-29 03:36:57,322 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:36:57,322 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:36:57,322 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-29 03:36:57,323 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:36:57,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:36:57,323 INFO L82 PathProgramCache]: Analyzing trace with hash 793037656, now seen corresponding path program 23 times [2020-10-29 03:36:57,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:36:57,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1064060341] [2020-10-29 03:36:57,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:36:57,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:57,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:57,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:57,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:57,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:57,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:04,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:04,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 361 [2020-10-29 03:37:04,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:37:04,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6660 [2020-10-29 03:37:04,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:04,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:04,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 03:37:04,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-29 03:37:04,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-29 03:37:04,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:04,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:37:04,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:04,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:04,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:04,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:37:04,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:37:04,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:37:04,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:04,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:04,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:37:04,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:37:04,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:37:04,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:04,701 INFO L134 CoverageAnalysis]: Checked inductivity of 3703 backedges. 0 proven. 529 refuted. 0 times theorem prover too weak. 3174 trivial. 0 not checked. [2020-10-29 03:37:04,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1064060341] [2020-10-29 03:37:04,701 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:37:04,701 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-29 03:37:04,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602823033] [2020-10-29 03:37:04,702 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-29 03:37:04,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:37:04,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-29 03:37:04,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-29 03:37:04,703 INFO L87 Difference]: Start difference. First operand 357 states and 365 transitions. Second operand 27 states. [2020-10-29 03:37:05,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:37:05,825 INFO L93 Difference]: Finished difference Result 679 states and 700 transitions. [2020-10-29 03:37:05,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-29 03:37:05,825 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 351 [2020-10-29 03:37:05,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:37:05,827 INFO L225 Difference]: With dead ends: 679 [2020-10-29 03:37:05,828 INFO L226 Difference]: Without dead ends: 378 [2020-10-29 03:37:05,829 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-29 03:37:05,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2020-10-29 03:37:05,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 371. [2020-10-29 03:37:05,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 371 states. [2020-10-29 03:37:05,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 379 transitions. [2020-10-29 03:37:05,843 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 379 transitions. Word has length 351 [2020-10-29 03:37:05,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:37:05,843 INFO L481 AbstractCegarLoop]: Abstraction has 371 states and 379 transitions. [2020-10-29 03:37:05,843 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-29 03:37:05,843 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 379 transitions. [2020-10-29 03:37:05,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2020-10-29 03:37:05,846 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:37:05,847 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:37:05,847 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-29 03:37:05,847 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:37:05,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:37:05,847 INFO L82 PathProgramCache]: Analyzing trace with hash 875988714, now seen corresponding path program 24 times [2020-10-29 03:37:05,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:37:05,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1558875364] [2020-10-29 03:37:05,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:37:05,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:05,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:05,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:06,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:06,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:06,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:16,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:16,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 375 [2020-10-29 03:37:16,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:37:16,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10319 [2020-10-29 03:37:16,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:16,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:16,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-29 03:37:16,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-29 03:37:16,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 03:37:16,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:16,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:37:16,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:16,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:16,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:16,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:37:16,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:37:16,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:37:16,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:16,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:16,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:37:16,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:37:16,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:37:16,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:16,851 INFO L134 CoverageAnalysis]: Checked inductivity of 4032 backedges. 0 proven. 576 refuted. 0 times theorem prover too weak. 3456 trivial. 0 not checked. [2020-10-29 03:37:16,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1558875364] [2020-10-29 03:37:16,851 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:37:16,851 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-29 03:37:16,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083613056] [2020-10-29 03:37:16,852 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-29 03:37:16,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:37:16,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-29 03:37:16,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-29 03:37:16,853 INFO L87 Difference]: Start difference. First operand 371 states and 379 transitions. Second operand 28 states. [2020-10-29 03:37:18,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:37:18,070 INFO L93 Difference]: Finished difference Result 705 states and 726 transitions. [2020-10-29 03:37:18,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-29 03:37:18,071 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 365 [2020-10-29 03:37:18,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:37:18,074 INFO L225 Difference]: With dead ends: 705 [2020-10-29 03:37:18,075 INFO L226 Difference]: Without dead ends: 392 [2020-10-29 03:37:18,076 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-29 03:37:18,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2020-10-29 03:37:18,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 385. [2020-10-29 03:37:18,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2020-10-29 03:37:18,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 393 transitions. [2020-10-29 03:37:18,091 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 393 transitions. Word has length 365 [2020-10-29 03:37:18,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:37:18,091 INFO L481 AbstractCegarLoop]: Abstraction has 385 states and 393 transitions. [2020-10-29 03:37:18,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-29 03:37:18,091 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 393 transitions. [2020-10-29 03:37:18,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2020-10-29 03:37:18,095 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:37:18,095 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:37:18,095 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-29 03:37:18,095 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:37:18,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:37:18,096 INFO L82 PathProgramCache]: Analyzing trace with hash 721165052, now seen corresponding path program 25 times [2020-10-29 03:37:18,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:37:18,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1248472808] [2020-10-29 03:37:18,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:37:18,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:18,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:18,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:18,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:18,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:18,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:25,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:25,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 389 [2020-10-29 03:37:25,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:37:25,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7689 [2020-10-29 03:37:25,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:25,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:25,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-29 03:37:25,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:37:25,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-29 03:37:25,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:26,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:37:26,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:26,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:26,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:26,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:37:26,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:37:26,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:37:26,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:26,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:26,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:37:26,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:37:26,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:37:26,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:26,554 INFO L134 CoverageAnalysis]: Checked inductivity of 4375 backedges. 0 proven. 625 refuted. 0 times theorem prover too weak. 3750 trivial. 0 not checked. [2020-10-29 03:37:26,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1248472808] [2020-10-29 03:37:26,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:37:26,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-29 03:37:26,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040601216] [2020-10-29 03:37:26,557 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-29 03:37:26,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:37:26,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-29 03:37:26,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-29 03:37:26,558 INFO L87 Difference]: Start difference. First operand 385 states and 393 transitions. Second operand 29 states. [2020-10-29 03:37:27,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:37:27,728 INFO L93 Difference]: Finished difference Result 731 states and 752 transitions. [2020-10-29 03:37:27,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-29 03:37:27,729 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 379 [2020-10-29 03:37:27,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:37:27,733 INFO L225 Difference]: With dead ends: 731 [2020-10-29 03:37:27,733 INFO L226 Difference]: Without dead ends: 406 [2020-10-29 03:37:27,734 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-29 03:37:27,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2020-10-29 03:37:27,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 399. [2020-10-29 03:37:27,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 399 states. [2020-10-29 03:37:27,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 407 transitions. [2020-10-29 03:37:27,748 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 407 transitions. Word has length 379 [2020-10-29 03:37:27,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:37:27,748 INFO L481 AbstractCegarLoop]: Abstraction has 399 states and 407 transitions. [2020-10-29 03:37:27,748 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-29 03:37:27,748 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 407 transitions. [2020-10-29 03:37:27,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2020-10-29 03:37:27,751 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:37:27,751 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:37:27,751 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-29 03:37:27,751 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:37:27,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:37:27,752 INFO L82 PathProgramCache]: Analyzing trace with hash -1732204658, now seen corresponding path program 26 times [2020-10-29 03:37:27,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:37:27,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1732107117] [2020-10-29 03:37:27,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:37:27,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:27,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:27,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:27,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:28,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:28,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:34,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:34,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 403 [2020-10-29 03:37:34,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:37:34,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6653 [2020-10-29 03:37:34,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:34,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:34,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-29 03:37:34,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 121 [2020-10-29 03:37:34,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 03:37:34,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:35,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:37:35,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:35,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:35,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:35,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:37:35,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:37:35,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:37:35,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:35,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:35,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:37:35,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:37:35,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:37:35,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:35,196 INFO L134 CoverageAnalysis]: Checked inductivity of 4732 backedges. 0 proven. 676 refuted. 0 times theorem prover too weak. 4056 trivial. 0 not checked. [2020-10-29 03:37:35,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1732107117] [2020-10-29 03:37:35,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:37:35,196 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-29 03:37:35,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829756085] [2020-10-29 03:37:35,197 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-29 03:37:35,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:37:35,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-29 03:37:35,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-29 03:37:35,198 INFO L87 Difference]: Start difference. First operand 399 states and 407 transitions. Second operand 30 states. [2020-10-29 03:37:36,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:37:36,407 INFO L93 Difference]: Finished difference Result 757 states and 778 transitions. [2020-10-29 03:37:36,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-29 03:37:36,408 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 393 [2020-10-29 03:37:36,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:37:36,411 INFO L225 Difference]: With dead ends: 757 [2020-10-29 03:37:36,411 INFO L226 Difference]: Without dead ends: 420 [2020-10-29 03:37:36,412 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-29 03:37:36,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2020-10-29 03:37:36,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 413. [2020-10-29 03:37:36,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 413 states. [2020-10-29 03:37:36,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 421 transitions. [2020-10-29 03:37:36,425 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 421 transitions. Word has length 393 [2020-10-29 03:37:36,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:37:36,425 INFO L481 AbstractCegarLoop]: Abstraction has 413 states and 421 transitions. [2020-10-29 03:37:36,425 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-29 03:37:36,425 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 421 transitions. [2020-10-29 03:37:36,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2020-10-29 03:37:36,428 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:37:36,428 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:37:36,428 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-29 03:37:36,428 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:37:36,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:37:36,429 INFO L82 PathProgramCache]: Analyzing trace with hash 481774752, now seen corresponding path program 27 times [2020-10-29 03:37:36,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:37:36,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1352264081] [2020-10-29 03:37:36,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:37:36,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:36,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:36,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:36,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:36,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:36,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:45,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:45,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 417 [2020-10-29 03:37:45,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:37:45,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8596 [2020-10-29 03:37:45,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:45,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:45,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-29 03:37:45,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-29 03:37:45,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 03:37:45,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:45,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:37:45,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:45,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:45,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:45,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:37:45,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:37:45,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:37:45,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:45,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:45,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:37:45,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:37:45,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:37:45,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:45,857 INFO L134 CoverageAnalysis]: Checked inductivity of 5103 backedges. 0 proven. 729 refuted. 0 times theorem prover too weak. 4374 trivial. 0 not checked. [2020-10-29 03:37:45,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1352264081] [2020-10-29 03:37:45,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:37:45,858 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-29 03:37:45,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274905388] [2020-10-29 03:37:45,859 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-29 03:37:45,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:37:45,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-29 03:37:45,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-29 03:37:45,860 INFO L87 Difference]: Start difference. First operand 413 states and 421 transitions. Second operand 31 states. [2020-10-29 03:37:47,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:37:47,320 INFO L93 Difference]: Finished difference Result 783 states and 804 transitions. [2020-10-29 03:37:47,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-29 03:37:47,321 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 407 [2020-10-29 03:37:47,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:37:47,324 INFO L225 Difference]: With dead ends: 783 [2020-10-29 03:37:47,324 INFO L226 Difference]: Without dead ends: 434 [2020-10-29 03:37:47,326 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-29 03:37:47,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2020-10-29 03:37:47,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 427. [2020-10-29 03:37:47,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 427 states. [2020-10-29 03:37:47,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 435 transitions. [2020-10-29 03:37:47,337 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 435 transitions. Word has length 407 [2020-10-29 03:37:47,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:37:47,338 INFO L481 AbstractCegarLoop]: Abstraction has 427 states and 435 transitions. [2020-10-29 03:37:47,338 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-29 03:37:47,338 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 435 transitions. [2020-10-29 03:37:47,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2020-10-29 03:37:47,341 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:37:47,341 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:37:47,341 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-29 03:37:47,341 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:37:47,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:37:47,342 INFO L82 PathProgramCache]: Analyzing trace with hash 1109076530, now seen corresponding path program 28 times [2020-10-29 03:37:47,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:37:47,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1763119840] [2020-10-29 03:37:47,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:37:47,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:47,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:47,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:47,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:47,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:47,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:52,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:52,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 431 [2020-10-29 03:37:52,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:37:52,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5296 [2020-10-29 03:37:52,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:52,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:52,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-29 03:37:52,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 187 [2020-10-29 03:37:52,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 03:37:52,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:53,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:37:53,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:53,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:53,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:53,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:37:53,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:37:53,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:37:53,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:53,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:53,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:37:53,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:37:53,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:37:53,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:53,525 INFO L134 CoverageAnalysis]: Checked inductivity of 5488 backedges. 0 proven. 784 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2020-10-29 03:37:53,525 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1763119840] [2020-10-29 03:37:53,525 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:37:53,526 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-29 03:37:53,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940851663] [2020-10-29 03:37:53,526 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-29 03:37:53,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:37:53,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-29 03:37:53,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-29 03:37:53,528 INFO L87 Difference]: Start difference. First operand 427 states and 435 transitions. Second operand 32 states. [2020-10-29 03:37:54,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:37:54,985 INFO L93 Difference]: Finished difference Result 809 states and 830 transitions. [2020-10-29 03:37:54,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-29 03:37:54,985 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 421 [2020-10-29 03:37:54,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:37:54,989 INFO L225 Difference]: With dead ends: 809 [2020-10-29 03:37:54,989 INFO L226 Difference]: Without dead ends: 448 [2020-10-29 03:37:54,991 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-29 03:37:54,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2020-10-29 03:37:55,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 441. [2020-10-29 03:37:55,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 441 states. [2020-10-29 03:37:55,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 449 transitions. [2020-10-29 03:37:55,002 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 449 transitions. Word has length 421 [2020-10-29 03:37:55,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:37:55,003 INFO L481 AbstractCegarLoop]: Abstraction has 441 states and 449 transitions. [2020-10-29 03:37:55,003 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-29 03:37:55,003 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 449 transitions. [2020-10-29 03:37:55,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2020-10-29 03:37:55,006 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:37:55,006 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:37:55,006 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-29 03:37:55,006 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:37:55,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:37:55,007 INFO L82 PathProgramCache]: Analyzing trace with hash -768647100, now seen corresponding path program 29 times [2020-10-29 03:37:55,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:37:55,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1515166346] [2020-10-29 03:37:55,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:37:55,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:55,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:55,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:55,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:55,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:55,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:00,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:00,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 445 [2020-10-29 03:38:00,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:38:00,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5435 [2020-10-29 03:38:00,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:00,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:00,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-29 03:38:00,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:38:00,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-29 03:38:00,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:01,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:38:01,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:01,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:01,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:01,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:38:01,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:01,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:38:01,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:01,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:01,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:38:01,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:38:01,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:38:01,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:01,354 INFO L134 CoverageAnalysis]: Checked inductivity of 5887 backedges. 0 proven. 841 refuted. 0 times theorem prover too weak. 5046 trivial. 0 not checked. [2020-10-29 03:38:01,354 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1515166346] [2020-10-29 03:38:01,354 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:38:01,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-29 03:38:01,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967637620] [2020-10-29 03:38:01,355 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-29 03:38:01,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:38:01,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-29 03:38:01,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 03:38:01,357 INFO L87 Difference]: Start difference. First operand 441 states and 449 transitions. Second operand 33 states. [2020-10-29 03:38:02,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:38:02,903 INFO L93 Difference]: Finished difference Result 835 states and 856 transitions. [2020-10-29 03:38:02,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-29 03:38:02,903 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 435 [2020-10-29 03:38:02,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:38:02,907 INFO L225 Difference]: With dead ends: 835 [2020-10-29 03:38:02,907 INFO L226 Difference]: Without dead ends: 462 [2020-10-29 03:38:02,908 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 03:38:02,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2020-10-29 03:38:02,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 455. [2020-10-29 03:38:02,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 455 states. [2020-10-29 03:38:02,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 463 transitions. [2020-10-29 03:38:02,920 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 463 transitions. Word has length 435 [2020-10-29 03:38:02,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:38:02,920 INFO L481 AbstractCegarLoop]: Abstraction has 455 states and 463 transitions. [2020-10-29 03:38:02,920 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-29 03:38:02,921 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 463 transitions. [2020-10-29 03:38:02,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2020-10-29 03:38:02,923 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:38:02,924 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:38:02,924 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-29 03:38:02,924 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:38:02,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:38:02,925 INFO L82 PathProgramCache]: Analyzing trace with hash -1505816874, now seen corresponding path program 30 times [2020-10-29 03:38:02,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:38:02,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1349435131] [2020-10-29 03:38:02,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:38:02,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:02,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:03,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:03,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:03,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:03,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:09,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:09,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 459 [2020-10-29 03:38:09,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:38:09,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6442 [2020-10-29 03:38:09,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:09,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:09,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-29 03:38:09,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 199 [2020-10-29 03:38:09,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-29 03:38:09,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:10,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:38:10,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:10,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:10,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:10,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:38:10,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:10,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:38:10,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:10,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:10,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:38:10,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:38:10,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:38:10,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:10,333 INFO L134 CoverageAnalysis]: Checked inductivity of 6300 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 5400 trivial. 0 not checked. [2020-10-29 03:38:10,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1349435131] [2020-10-29 03:38:10,333 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:38:10,333 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-29 03:38:10,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826497542] [2020-10-29 03:38:10,334 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-29 03:38:10,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:38:10,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-29 03:38:10,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-29 03:38:10,335 INFO L87 Difference]: Start difference. First operand 455 states and 463 transitions. Second operand 34 states. [2020-10-29 03:38:11,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:38:11,805 INFO L93 Difference]: Finished difference Result 861 states and 882 transitions. [2020-10-29 03:38:11,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-29 03:38:11,806 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 449 [2020-10-29 03:38:11,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:38:11,809 INFO L225 Difference]: With dead ends: 861 [2020-10-29 03:38:11,809 INFO L226 Difference]: Without dead ends: 476 [2020-10-29 03:38:11,810 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-29 03:38:11,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2020-10-29 03:38:11,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 469. [2020-10-29 03:38:11,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 469 states. [2020-10-29 03:38:11,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 477 transitions. [2020-10-29 03:38:11,822 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 477 transitions. Word has length 449 [2020-10-29 03:38:11,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:38:11,823 INFO L481 AbstractCegarLoop]: Abstraction has 469 states and 477 transitions. [2020-10-29 03:38:11,823 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-29 03:38:11,823 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 477 transitions. [2020-10-29 03:38:11,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 464 [2020-10-29 03:38:11,826 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:38:11,827 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:38:11,827 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-29 03:38:11,827 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:38:11,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:38:11,828 INFO L82 PathProgramCache]: Analyzing trace with hash -107129368, now seen corresponding path program 31 times [2020-10-29 03:38:11,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:38:11,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1879931514] [2020-10-29 03:38:11,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:38:11,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:11,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:11,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:12,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:12,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:12,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:17,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:17,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 473 [2020-10-29 03:38:17,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:38:17,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5370 [2020-10-29 03:38:17,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:17,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:17,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-29 03:38:17,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-29 03:38:17,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 03:38:17,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:18,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:38:18,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:18,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:18,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:18,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:38:18,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:18,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:38:18,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:18,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:18,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:38:18,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:38:18,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:38:18,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:18,251 INFO L134 CoverageAnalysis]: Checked inductivity of 6727 backedges. 0 proven. 961 refuted. 0 times theorem prover too weak. 5766 trivial. 0 not checked. [2020-10-29 03:38:18,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1879931514] [2020-10-29 03:38:18,251 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:38:18,251 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-29 03:38:18,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683411774] [2020-10-29 03:38:18,252 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-29 03:38:18,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:38:18,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-29 03:38:18,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-29 03:38:18,253 INFO L87 Difference]: Start difference. First operand 469 states and 477 transitions. Second operand 35 states.