/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/eca-rers2012/Problem11_label19.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 06:45:15,603 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 06:45:15,607 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 06:45:15,664 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 06:45:15,665 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 06:45:15,666 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 06:45:15,668 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 06:45:15,671 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 06:45:15,674 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 06:45:15,676 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 06:45:15,677 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 06:45:15,679 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 06:45:15,680 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 06:45:15,681 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 06:45:15,683 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 06:45:15,685 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 06:45:15,686 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 06:45:15,687 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 06:45:15,690 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 06:45:15,692 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 06:45:15,695 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 06:45:15,697 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 06:45:15,698 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 06:45:15,699 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 06:45:15,703 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 06:45:15,704 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 06:45:15,704 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 06:45:15,705 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 06:45:15,706 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 06:45:15,707 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 06:45:15,708 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 06:45:15,709 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 06:45:15,710 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 06:45:15,711 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 06:45:15,713 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 06:45:15,713 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 06:45:15,714 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 06:45:15,715 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 06:45:15,715 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 06:45:15,717 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 06:45:15,718 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 06:45:15,720 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 06:45:15,759 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 06:45:15,760 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 06:45:15,761 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 06:45:15,762 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 06:45:15,762 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 06:45:15,763 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 06:45:15,763 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 06:45:15,763 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 06:45:15,763 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 06:45:15,764 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 06:45:15,764 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 06:45:15,764 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 06:45:15,764 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 06:45:15,765 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 06:45:15,765 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 06:45:15,765 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 06:45:15,765 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 06:45:15,766 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 06:45:15,766 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 06:45:15,766 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 06:45:15,767 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 06:45:15,767 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 06:45:15,767 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 06:45:15,767 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 06:45:15,768 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 06:45:15,768 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 06:45:15,768 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 06:45:15,768 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 06:45:15,769 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 06:45:15,769 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 06:45:16,147 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 06:45:16,181 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 06:45:16,184 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 06:45:16,186 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 06:45:16,187 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 06:45:16,188 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label19.c [2020-10-29 06:45:16,279 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9e6a3e435/a3686a837d1e456fb2837a374bb52050/FLAGa3530af28 [2020-10-29 06:45:17,191 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 06:45:17,193 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label19.c [2020-10-29 06:45:17,217 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9e6a3e435/a3686a837d1e456fb2837a374bb52050/FLAGa3530af28 [2020-10-29 06:45:17,347 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9e6a3e435/a3686a837d1e456fb2837a374bb52050 [2020-10-29 06:45:17,351 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 06:45:17,358 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 06:45:17,360 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 06:45:17,360 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 06:45:17,364 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 06:45:17,365 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 06:45:17" (1/1) ... [2020-10-29 06:45:17,369 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24b19597 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:45:17, skipping insertion in model container [2020-10-29 06:45:17,369 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 06:45:17" (1/1) ... [2020-10-29 06:45:17,379 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 06:45:17,458 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 06:45:18,238 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 06:45:18,258 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 06:45:18,583 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 06:45:18,604 INFO L208 MainTranslator]: Completed translation [2020-10-29 06:45:18,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:45:18 WrapperNode [2020-10-29 06:45:18,605 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 06:45:18,606 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 06:45:18,606 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 06:45:18,607 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 06:45:18,622 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:45:18" (1/1) ... [2020-10-29 06:45:18,624 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:45:18" (1/1) ... [2020-10-29 06:45:18,674 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:45:18" (1/1) ... [2020-10-29 06:45:18,674 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:45:18" (1/1) ... [2020-10-29 06:45:18,765 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:45:18" (1/1) ... [2020-10-29 06:45:18,778 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:45:18" (1/1) ... [2020-10-29 06:45:18,793 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:45:18" (1/1) ... [2020-10-29 06:45:18,816 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 06:45:18,817 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 06:45:18,817 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 06:45:18,817 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 06:45:18,818 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:45:18" (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 06:45:18,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 06:45:18,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 06:45:18,905 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 06:45:18,905 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 06:45:18,905 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 06:45:18,906 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 06:45:18,906 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 06:45:18,906 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 06:45:18,906 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 06:45:18,906 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 06:45:18,906 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 06:45:18,906 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 06:45:18,907 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 06:45:18,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 06:45:18,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 06:45:18,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 06:45:18,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 06:45:18,907 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 06:45:18,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 06:45:20,859 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 06:45:20,860 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 06:45:20,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 06:45:20 BoogieIcfgContainer [2020-10-29 06:45:20,863 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 06:45:20,865 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 06:45:20,865 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 06:45:20,869 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 06:45:20,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 06:45:17" (1/3) ... [2020-10-29 06:45:20,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1884ee6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 06:45:20, skipping insertion in model container [2020-10-29 06:45:20,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:45:18" (2/3) ... [2020-10-29 06:45:20,871 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1884ee6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 06:45:20, skipping insertion in model container [2020-10-29 06:45:20,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 06:45:20" (3/3) ... [2020-10-29 06:45:20,872 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem11_label19.c [2020-10-29 06:45:20,883 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 06:45:20,889 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 06:45:20,903 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 06:45:20,934 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 06:45:20,934 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 06:45:20,935 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 06:45:20,935 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 06:45:20,935 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 06:45:20,935 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 06:45:20,935 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 06:45:20,935 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 06:45:20,961 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states. [2020-10-29 06:45:20,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-29 06:45:20,971 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:45:20,972 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:45:20,973 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:45:20,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:45:20,980 INFO L82 PathProgramCache]: Analyzing trace with hash 406430782, now seen corresponding path program 1 times [2020-10-29 06:45:20,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:45:20,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [923937173] [2020-10-29 06:45:20,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:45:21,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:45:21,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:21,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:45:21,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 06:45:21,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:45:21,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 696 [2020-10-29 06:45:21,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:45:21,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:45:21,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:45:21,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:45:21,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 06:45:21,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 06:45:22,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:45:22,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:45:22,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:22,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:45:22,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:45:22,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:45:22,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 06:45:22,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:45:22,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:45:22,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:45:22,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:45:22,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:45:22,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:45:22,197 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 06:45:22,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [923937173] [2020-10-29 06:45:22,200 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 06:45:22,200 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 06:45:22,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429796915] [2020-10-29 06:45:22,206 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 06:45:22,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:45:22,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 06:45:22,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 06:45:22,225 INFO L87 Difference]: Start difference. First operand 296 states. Second operand 5 states. [2020-10-29 06:45:25,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:45:25,544 INFO L93 Difference]: Finished difference Result 798 states and 1400 transitions. [2020-10-29 06:45:25,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 06:45:25,547 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 63 [2020-10-29 06:45:25,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:45:25,581 INFO L225 Difference]: With dead ends: 798 [2020-10-29 06:45:25,581 INFO L226 Difference]: Without dead ends: 438 [2020-10-29 06:45:25,595 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:45:25,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2020-10-29 06:45:25,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 423. [2020-10-29 06:45:25,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 423 states. [2020-10-29 06:45:25,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 674 transitions. [2020-10-29 06:45:25,740 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 674 transitions. Word has length 63 [2020-10-29 06:45:25,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:45:25,742 INFO L481 AbstractCegarLoop]: Abstraction has 423 states and 674 transitions. [2020-10-29 06:45:25,742 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 06:45:25,742 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 674 transitions. [2020-10-29 06:45:25,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-29 06:45:25,758 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:45:25,759 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 06:45:25,759 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 06:45:25,760 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:45:25,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:45:25,761 INFO L82 PathProgramCache]: Analyzing trace with hash 189457817, now seen corresponding path program 1 times [2020-10-29 06:45:25,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:45:25,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [626097759] [2020-10-29 06:45:25,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:45:25,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:45:25,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:26,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:27,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:28,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:45:28,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-29 06:45:28,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:45:28,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2278 [2020-10-29 06:45:28,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:45:28,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:45:28,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:45:28,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-29 06:45:28,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-29 06:45:28,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:45:28,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:45:28,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:45:28,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:28,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:45:28,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:45:28,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:45:28,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 06:45:28,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:45:28,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:45:28,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:45:28,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:45:28,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:45:28,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:45:28,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:45:28,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:45:28,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:28,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:45:28,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 06:45:28,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:45:28,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-29 06:45:28,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:45:28,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:45:28,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:45:28,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:45:28,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 06:45:28,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:45:28,525 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 54 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 06:45:28,525 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [626097759] [2020-10-29 06:45:28,526 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:45:28,526 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 06:45:28,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123045860] [2020-10-29 06:45:28,528 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 06:45:28,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:45:28,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 06:45:28,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 06:45:28,531 INFO L87 Difference]: Start difference. First operand 423 states and 674 transitions. Second operand 5 states. [2020-10-29 06:45:28,973 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-10-29 06:45:31,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:45:31,799 INFO L93 Difference]: Finished difference Result 1241 states and 2008 transitions. [2020-10-29 06:45:31,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 06:45:31,803 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 132 [2020-10-29 06:45:31,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:45:31,811 INFO L225 Difference]: With dead ends: 1241 [2020-10-29 06:45:31,811 INFO L226 Difference]: Without dead ends: 824 [2020-10-29 06:45:31,814 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:45:31,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 824 states. [2020-10-29 06:45:31,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 824 to 627. [2020-10-29 06:45:31,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 627 states. [2020-10-29 06:45:31,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 970 transitions. [2020-10-29 06:45:31,870 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 970 transitions. Word has length 132 [2020-10-29 06:45:31,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:45:31,874 INFO L481 AbstractCegarLoop]: Abstraction has 627 states and 970 transitions. [2020-10-29 06:45:31,874 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 06:45:31,874 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 970 transitions. [2020-10-29 06:45:31,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-29 06:45:31,885 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:45:31,885 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 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 06:45:31,885 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 06:45:31,886 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:45:31,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:45:31,887 INFO L82 PathProgramCache]: Analyzing trace with hash -144123103, now seen corresponding path program 1 times [2020-10-29 06:45:31,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:45:31,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [308045602] [2020-10-29 06:45:31,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:45:31,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:45:31,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:32,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:45:32,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-29 06:45:32,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:45:32,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 650 [2020-10-29 06:45:32,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:45:32,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:45:32,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:45:32,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:45:32,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-29 06:45:32,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:45:32,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:45:32,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:45:32,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:32,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:45:32,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:45:32,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:45:32,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 06:45:32,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:45:32,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:45:32,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:45:32,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:45:32,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:45:32,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:45:32,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:45:32,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:45:32,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:32,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:45:32,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 06:45:32,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:45:32,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-29 06:45:32,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:45:32,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:45:32,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:45:32,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:45:32,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 06:45:33,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:45:33,162 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 06:45:33,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [308045602] [2020-10-29 06:45:33,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 06:45:33,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 06:45:33,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076170889] [2020-10-29 06:45:33,167 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:45:33,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:45:33,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:45:33,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:45:33,169 INFO L87 Difference]: Start difference. First operand 627 states and 970 transitions. Second operand 7 states. [2020-10-29 06:45:36,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:45:36,637 INFO L93 Difference]: Finished difference Result 1476 states and 2319 transitions. [2020-10-29 06:45:36,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 06:45:36,638 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 136 [2020-10-29 06:45:36,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:45:36,650 INFO L225 Difference]: With dead ends: 1476 [2020-10-29 06:45:36,651 INFO L226 Difference]: Without dead ends: 855 [2020-10-29 06:45:36,654 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:45:36,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2020-10-29 06:45:36,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 830. [2020-10-29 06:45:36,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 830 states. [2020-10-29 06:45:36,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 1196 transitions. [2020-10-29 06:45:36,708 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 1196 transitions. Word has length 136 [2020-10-29 06:45:36,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:45:36,709 INFO L481 AbstractCegarLoop]: Abstraction has 830 states and 1196 transitions. [2020-10-29 06:45:36,709 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:45:36,709 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 1196 transitions. [2020-10-29 06:45:36,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-29 06:45:36,714 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:45:36,717 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:45:36,718 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 06:45:36,718 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:45:36,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:45:36,720 INFO L82 PathProgramCache]: Analyzing trace with hash 1295976040, now seen corresponding path program 1 times [2020-10-29 06:45:36,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:45:36,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [848151434] [2020-10-29 06:45:36,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:45:36,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:45:36,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:36,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:37,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:38,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:38,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:39,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:45:39,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-10-29 06:45:39,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 06:45:39,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2586 [2020-10-29 06:45:39,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:45:39,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:45:39,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 06:45:39,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:45:39,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 197 [2020-10-29 06:45:39,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:45:39,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:45:39,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:45:39,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:39,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:45:39,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:45:39,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:45:39,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 06:45:39,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:45:39,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:45:39,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:45:39,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:45:39,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:45:39,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 06:45:39,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:45:39,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:45:39,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:39,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:40,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:45:40,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:45:40,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:45:40,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 523 [2020-10-29 06:45:40,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:45:40,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:45:40,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:45:40,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:45:40,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-29 06:45:40,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:45:40,271 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 06:45:40,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [848151434] [2020-10-29 06:45:40,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:45:40,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 06:45:40,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295845800] [2020-10-29 06:45:40,273 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 06:45:40,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:45:40,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 06:45:40,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:45:40,274 INFO L87 Difference]: Start difference. First operand 830 states and 1196 transitions. Second operand 6 states. [2020-10-29 06:45:43,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:45:43,103 INFO L93 Difference]: Finished difference Result 2288 states and 3492 transitions. [2020-10-29 06:45:43,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 06:45:43,104 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 194 [2020-10-29 06:45:43,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:45:43,117 INFO L225 Difference]: With dead ends: 2288 [2020-10-29 06:45:43,118 INFO L226 Difference]: Without dead ends: 1464 [2020-10-29 06:45:43,122 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 06:45:43,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1464 states. [2020-10-29 06:45:43,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1464 to 1242. [2020-10-29 06:45:43,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1242 states. [2020-10-29 06:45:43,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1242 states to 1242 states and 1723 transitions. [2020-10-29 06:45:43,187 INFO L78 Accepts]: Start accepts. Automaton has 1242 states and 1723 transitions. Word has length 194 [2020-10-29 06:45:43,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:45:43,188 INFO L481 AbstractCegarLoop]: Abstraction has 1242 states and 1723 transitions. [2020-10-29 06:45:43,188 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 06:45:43,189 INFO L276 IsEmpty]: Start isEmpty. Operand 1242 states and 1723 transitions. [2020-10-29 06:45:43,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2020-10-29 06:45:43,193 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:45:43,194 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:45:43,194 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 06:45:43,194 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:45:43,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:45:43,195 INFO L82 PathProgramCache]: Analyzing trace with hash 1486038072, now seen corresponding path program 1 times [2020-10-29 06:45:43,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:45:43,195 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1291807063] [2020-10-29 06:45:43,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:45:43,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:45:43,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:43,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:43,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:43,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:45,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:48,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:45:48,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 245 [2020-10-29 06:45:48,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 06:45:48,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-29 06:45:48,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:45:48,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:45:48,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 06:45:48,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:45:48,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-10-29 06:45:48,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:45:48,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:45:48,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:45:48,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:48,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:45:48,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:45:48,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:45:48,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 06:45:48,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:45:48,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:45:48,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:45:48,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:45:48,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:45:48,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:45:48,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:45:48,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:45:48,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:48,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:48,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:45:48,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 06:45:48,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:45:48,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-29 06:45:48,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:45:48,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:45:48,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:45:48,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:45:48,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-29 06:45:48,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 06:45:48,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-29 06:45:48,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:45:48,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:48,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:45:48,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-29 06:45:48,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:45:48,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-29 06:45:48,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:45:48,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:45:48,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:45:48,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:45:48,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-29 06:45:48,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:45:49,033 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 176 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 06:45:49,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1291807063] [2020-10-29 06:45:49,033 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:45:49,034 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:45:49,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128138068] [2020-10-29 06:45:49,034 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:45:49,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:45:49,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:45:49,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:45:49,036 INFO L87 Difference]: Start difference. First operand 1242 states and 1723 transitions. Second operand 7 states. [2020-10-29 06:45:52,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:45:52,061 INFO L93 Difference]: Finished difference Result 3123 states and 4650 transitions. [2020-10-29 06:45:52,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 06:45:52,062 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 231 [2020-10-29 06:45:52,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:45:52,076 INFO L225 Difference]: With dead ends: 3123 [2020-10-29 06:45:52,076 INFO L226 Difference]: Without dead ends: 1887 [2020-10-29 06:45:52,081 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:45:52,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1887 states. [2020-10-29 06:45:52,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1887 to 1824. [2020-10-29 06:45:52,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1824 states. [2020-10-29 06:45:52,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1824 states to 1824 states and 2479 transitions. [2020-10-29 06:45:52,157 INFO L78 Accepts]: Start accepts. Automaton has 1824 states and 2479 transitions. Word has length 231 [2020-10-29 06:45:52,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:45:52,157 INFO L481 AbstractCegarLoop]: Abstraction has 1824 states and 2479 transitions. [2020-10-29 06:45:52,157 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:45:52,157 INFO L276 IsEmpty]: Start isEmpty. Operand 1824 states and 2479 transitions. [2020-10-29 06:45:52,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-10-29 06:45:52,163 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:45:52,163 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:45:52,163 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 06:45:52,164 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:45:52,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:45:52,164 INFO L82 PathProgramCache]: Analyzing trace with hash 1356090230, now seen corresponding path program 1 times [2020-10-29 06:45:52,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:45:52,165 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [873862765] [2020-10-29 06:45:52,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:45:52,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:45:52,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:52,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:54,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:54,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:45:54,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-10-29 06:45:54,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:45:54,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2403 [2020-10-29 06:45:54,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:45:54,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:45:54,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 06:45:54,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:45:54,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 257 [2020-10-29 06:45:54,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:45:54,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:45:54,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:45:54,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:54,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:45:54,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:45:54,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:45:54,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 06:45:54,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:45:54,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:45:54,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:45:54,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:45:54,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:45:54,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:45:54,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:45:54,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:45:54,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:55,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:55,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:45:55,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 06:45:55,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:45:55,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 299 [2020-10-29 06:45:55,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:45:55,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:45:55,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:45:55,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:45:55,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 06:45:55,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:45:55,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-29 06:45:55,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:45:55,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:55,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:45:55,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 06:45:55,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:45:55,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-29 06:45:55,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:45:55,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:45:55,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 06:45:55,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:45:55,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 06:45:55,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:45:55,839 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 117 proven. 62 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 06:45:55,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [873862765] [2020-10-29 06:45:55,840 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:45:55,840 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 06:45:55,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676534711] [2020-10-29 06:45:55,841 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 06:45:55,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:45:55,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 06:45:55,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-29 06:45:55,843 INFO L87 Difference]: Start difference. First operand 1824 states and 2479 transitions. Second operand 8 states. [2020-10-29 06:45:59,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:45:59,704 INFO L93 Difference]: Finished difference Result 4244 states and 5756 transitions. [2020-10-29 06:45:59,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 06:45:59,708 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 252 [2020-10-29 06:45:59,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:45:59,722 INFO L225 Difference]: With dead ends: 4244 [2020-10-29 06:45:59,722 INFO L226 Difference]: Without dead ends: 2426 [2020-10-29 06:45:59,728 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-10-29 06:45:59,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2426 states. [2020-10-29 06:45:59,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2426 to 2402. [2020-10-29 06:45:59,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2402 states. [2020-10-29 06:45:59,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2402 states to 2402 states and 3129 transitions. [2020-10-29 06:45:59,811 INFO L78 Accepts]: Start accepts. Automaton has 2402 states and 3129 transitions. Word has length 252 [2020-10-29 06:45:59,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:45:59,811 INFO L481 AbstractCegarLoop]: Abstraction has 2402 states and 3129 transitions. [2020-10-29 06:45:59,811 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 06:45:59,812 INFO L276 IsEmpty]: Start isEmpty. Operand 2402 states and 3129 transitions. [2020-10-29 06:45:59,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2020-10-29 06:45:59,819 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:45:59,820 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:45:59,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 06:45:59,820 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:45:59,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:45:59,821 INFO L82 PathProgramCache]: Analyzing trace with hash 852615103, now seen corresponding path program 1 times [2020-10-29 06:45:59,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:45:59,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [972420926] [2020-10-29 06:45:59,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:45:59,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:45:59,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:00,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:01,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:02,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:02,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 304 [2020-10-29 06:46:02,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:46:02,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2449 [2020-10-29 06:46:02,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:02,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:02,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:46:02,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-29 06:46:02,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-29 06:46:02,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:46:02,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:46:02,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:02,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:02,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:02,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:46:02,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:46:02,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 06:46:02,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:02,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:02,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:46:02,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:46:02,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:46:02,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:46:02,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:46:02,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:02,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:02,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:02,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:46:02,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:46:02,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-29 06:46:02,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:02,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:02,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:46:02,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:46:02,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-29 06:46:02,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 06:46:02,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 06:46:02,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:02,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:02,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:02,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-29 06:46:02,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:46:02,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-29 06:46:02,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:02,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:02,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:46:02,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:46:02,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-29 06:46:02,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:46:03,056 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 203 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 06:46:03,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [972420926] [2020-10-29 06:46:03,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:46:03,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:46:03,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445451679] [2020-10-29 06:46:03,058 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:46:03,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:46:03,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:46:03,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:46:03,059 INFO L87 Difference]: Start difference. First operand 2402 states and 3129 transitions. Second operand 7 states. [2020-10-29 06:46:06,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:46:06,066 INFO L93 Difference]: Finished difference Result 6206 states and 8297 transitions. [2020-10-29 06:46:06,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 06:46:06,067 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 290 [2020-10-29 06:46:06,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:46:06,093 INFO L225 Difference]: With dead ends: 6206 [2020-10-29 06:46:06,093 INFO L226 Difference]: Without dead ends: 3810 [2020-10-29 06:46:06,102 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-29 06:46:06,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3810 states. [2020-10-29 06:46:06,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3810 to 3792. [2020-10-29 06:46:06,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3792 states. [2020-10-29 06:46:06,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3792 states to 3792 states and 4846 transitions. [2020-10-29 06:46:06,250 INFO L78 Accepts]: Start accepts. Automaton has 3792 states and 4846 transitions. Word has length 290 [2020-10-29 06:46:06,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:46:06,251 INFO L481 AbstractCegarLoop]: Abstraction has 3792 states and 4846 transitions. [2020-10-29 06:46:06,251 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:46:06,251 INFO L276 IsEmpty]: Start isEmpty. Operand 3792 states and 4846 transitions. [2020-10-29 06:46:06,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2020-10-29 06:46:06,261 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:46:06,261 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:46:06,262 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 06:46:06,262 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:46:06,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:46:06,262 INFO L82 PathProgramCache]: Analyzing trace with hash 1851363792, now seen corresponding path program 1 times [2020-10-29 06:46:06,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:46:06,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [283117804] [2020-10-29 06:46:06,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:46:06,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:06,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:06,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:08,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:08,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 305 [2020-10-29 06:46:08,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:46:08,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2597 [2020-10-29 06:46:08,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:08,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:08,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:46:08,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:46:08,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-10-29 06:46:08,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:46:09,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:46:09,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:09,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:09,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:09,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:46:09,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:46:09,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 06:46:09,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:09,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:09,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:46:09,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:46:09,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:46:09,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:46:09,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:46:09,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:09,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:09,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:09,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-29 06:46:09,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:46:09,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-29 06:46:09,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:09,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:09,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:46:09,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:46:09,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-10-29 06:46:09,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:46:09,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-10-29 06:46:09,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:09,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:09,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:09,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 06:46:09,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:46:09,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-29 06:46:09,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:09,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:09,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:46:09,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-29 06:46:09,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:46:09,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:46:09,639 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 110 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 06:46:09,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [283117804] [2020-10-29 06:46:09,639 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:46:09,640 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:46:09,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214585469] [2020-10-29 06:46:09,641 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:46:09,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:46:09,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:46:09,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:46:09,642 INFO L87 Difference]: Start difference. First operand 3792 states and 4846 transitions. Second operand 7 states. [2020-10-29 06:46:12,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:46:12,982 INFO L93 Difference]: Finished difference Result 9363 states and 12296 transitions. [2020-10-29 06:46:12,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 06:46:12,983 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 291 [2020-10-29 06:46:12,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:46:13,015 INFO L225 Difference]: With dead ends: 9363 [2020-10-29 06:46:13,015 INFO L226 Difference]: Without dead ends: 5577 [2020-10-29 06:46:13,027 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:46:13,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5577 states. [2020-10-29 06:46:13,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5577 to 5164. [2020-10-29 06:46:13,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5164 states. [2020-10-29 06:46:13,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5164 states to 5164 states and 6593 transitions. [2020-10-29 06:46:13,269 INFO L78 Accepts]: Start accepts. Automaton has 5164 states and 6593 transitions. Word has length 291 [2020-10-29 06:46:13,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:46:13,270 INFO L481 AbstractCegarLoop]: Abstraction has 5164 states and 6593 transitions. [2020-10-29 06:46:13,270 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:46:13,270 INFO L276 IsEmpty]: Start isEmpty. Operand 5164 states and 6593 transitions. [2020-10-29 06:46:13,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2020-10-29 06:46:13,281 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:46:13,282 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:46:13,282 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 06:46:13,283 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:46:13,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:46:13,284 INFO L82 PathProgramCache]: Analyzing trace with hash 296403634, now seen corresponding path program 1 times [2020-10-29 06:46:13,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:46:13,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [409613612] [2020-10-29 06:46:13,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:46:13,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:13,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:13,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:13,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:15,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:15,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-29 06:46:15,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:46:15,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2122 [2020-10-29 06:46:15,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:15,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:15,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:46:15,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-29 06:46:15,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-29 06:46:15,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:46:15,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:46:15,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:15,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:15,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:15,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:46:15,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:46:15,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 06:46:15,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:15,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:15,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:46:15,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:46:15,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:46:15,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:46:15,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:46:15,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:15,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:15,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:15,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:46:15,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:46:15,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-29 06:46:15,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:15,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:15,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:46:15,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:46:15,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-29 06:46:15,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:46:15,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 06:46:15,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:15,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:15,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:16,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:16,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-29 06:46:16,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:46:16,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-29 06:46:16,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:16,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:16,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:46:16,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:46:16,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-29 06:46:16,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:46:16,149 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 108 proven. 4 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-10-29 06:46:16,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [409613612] [2020-10-29 06:46:16,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:46:16,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 06:46:16,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574595074] [2020-10-29 06:46:16,151 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 06:46:16,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:46:16,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 06:46:16,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:46:16,152 INFO L87 Difference]: Start difference. First operand 5164 states and 6593 transitions. Second operand 6 states. [2020-10-29 06:46:18,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:46:18,737 INFO L93 Difference]: Finished difference Result 10136 states and 12983 transitions. [2020-10-29 06:46:18,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 06:46:18,743 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 296 [2020-10-29 06:46:18,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:46:18,769 INFO L225 Difference]: With dead ends: 10136 [2020-10-29 06:46:18,770 INFO L226 Difference]: Without dead ends: 5166 [2020-10-29 06:46:18,784 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:46:18,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5166 states. [2020-10-29 06:46:18,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5166 to 5160. [2020-10-29 06:46:18,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5160 states. [2020-10-29 06:46:18,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5160 states to 5160 states and 6313 transitions. [2020-10-29 06:46:18,937 INFO L78 Accepts]: Start accepts. Automaton has 5160 states and 6313 transitions. Word has length 296 [2020-10-29 06:46:18,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:46:18,938 INFO L481 AbstractCegarLoop]: Abstraction has 5160 states and 6313 transitions. [2020-10-29 06:46:18,938 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 06:46:18,938 INFO L276 IsEmpty]: Start isEmpty. Operand 5160 states and 6313 transitions. [2020-10-29 06:46:18,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2020-10-29 06:46:18,951 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:46:18,952 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:46:18,952 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 06:46:18,952 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:46:18,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:46:18,953 INFO L82 PathProgramCache]: Analyzing trace with hash 1178945301, now seen corresponding path program 1 times [2020-10-29 06:46:18,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:46:18,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [77948540] [2020-10-29 06:46:18,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:46:19,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:19,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:19,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:20,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:20,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 354 [2020-10-29 06:46:20,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:46:20,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1754 [2020-10-29 06:46:20,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:20,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:20,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:46:20,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 214 [2020-10-29 06:46:20,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 06:46:20,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:46:20,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:46:20,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:20,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:20,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:20,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:46:20,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:46:20,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 06:46:20,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:20,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:20,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:46:20,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:46:20,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:46:20,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:46:20,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:46:20,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:20,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:21,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:21,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 06:46:21,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:46:21,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-29 06:46:21,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:21,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:21,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:46:21,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:46:21,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:46:21,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:46:21,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-29 06:46:21,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:21,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:21,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:21,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 06:46:21,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:46:21,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-29 06:46:21,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:21,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:21,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:46:21,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:46:21,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 06:46:21,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:46:21,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2020-10-29 06:46:21,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:21,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:21,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:21,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 06:46:21,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:46:21,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-29 06:46:21,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:21,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:21,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:46:21,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:46:21,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 06:46:21,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:46:21,524 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 310 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-29 06:46:21,525 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [77948540] [2020-10-29 06:46:21,525 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:46:21,525 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:46:21,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659705624] [2020-10-29 06:46:21,526 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:46:21,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:46:21,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:46:21,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:46:21,527 INFO L87 Difference]: Start difference. First operand 5160 states and 6313 transitions. Second operand 7 states. [2020-10-29 06:46:24,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:46:24,901 INFO L93 Difference]: Finished difference Result 10374 states and 12803 transitions. [2020-10-29 06:46:24,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 06:46:24,902 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 338 [2020-10-29 06:46:24,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:46:24,960 INFO L225 Difference]: With dead ends: 10374 [2020-10-29 06:46:24,960 INFO L226 Difference]: Without dead ends: 5408 [2020-10-29 06:46:24,970 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-29 06:46:24,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5408 states. [2020-10-29 06:46:25,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5408 to 5380. [2020-10-29 06:46:25,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5380 states. [2020-10-29 06:46:25,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5380 states to 5380 states and 6588 transitions. [2020-10-29 06:46:25,110 INFO L78 Accepts]: Start accepts. Automaton has 5380 states and 6588 transitions. Word has length 338 [2020-10-29 06:46:25,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:46:25,111 INFO L481 AbstractCegarLoop]: Abstraction has 5380 states and 6588 transitions. [2020-10-29 06:46:25,111 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:46:25,111 INFO L276 IsEmpty]: Start isEmpty. Operand 5380 states and 6588 transitions. [2020-10-29 06:46:25,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2020-10-29 06:46:25,126 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:46:25,127 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:46:25,127 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 06:46:25,127 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:46:25,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:46:25,128 INFO L82 PathProgramCache]: Analyzing trace with hash -1861980874, now seen corresponding path program 1 times [2020-10-29 06:46:25,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:46:25,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1815269540] [2020-10-29 06:46:25,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:46:25,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:25,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:25,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:26,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:26,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 366 [2020-10-29 06:46:26,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:46:26,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1684 [2020-10-29 06:46:26,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:26,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:26,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:46:26,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-29 06:46:26,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-29 06:46:26,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:46:26,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:46:26,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:27,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:27,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:27,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:46:27,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:46:27,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 06:46:27,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:27,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:27,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:46:27,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:46:27,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:46:27,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:46:27,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:46:27,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:27,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:27,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:27,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:46:27,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:46:27,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-29 06:46:27,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:27,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:27,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:46:27,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:46:27,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-29 06:46:27,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:46:27,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 06:46:27,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:27,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:27,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:27,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 06:46:27,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:46:27,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-29 06:46:27,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:27,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:27,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:46:27,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:46:27,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-29 06:46:27,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:46:27,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-10-29 06:46:27,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:27,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:27,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:27,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 06:46:27,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:46:27,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 06:46:27,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:27,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:27,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:46:27,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-29 06:46:27,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:46:27,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:46:27,528 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 249 proven. 72 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-29 06:46:27,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1815269540] [2020-10-29 06:46:27,528 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:46:27,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:46:27,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892535158] [2020-10-29 06:46:27,529 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:46:27,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:46:27,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:46:27,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:46:27,530 INFO L87 Difference]: Start difference. First operand 5380 states and 6588 transitions. Second operand 7 states. [2020-10-29 06:46:30,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:46:30,831 INFO L93 Difference]: Finished difference Result 14044 states and 17643 transitions. [2020-10-29 06:46:30,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 06:46:30,832 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 350 [2020-10-29 06:46:30,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:46:30,883 INFO L225 Difference]: With dead ends: 14044 [2020-10-29 06:46:30,884 INFO L226 Difference]: Without dead ends: 8858 [2020-10-29 06:46:30,900 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:46:30,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8858 states. [2020-10-29 06:46:31,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8858 to 8648. [2020-10-29 06:46:31,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8648 states. [2020-10-29 06:46:31,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8648 states to 8648 states and 10822 transitions. [2020-10-29 06:46:31,151 INFO L78 Accepts]: Start accepts. Automaton has 8648 states and 10822 transitions. Word has length 350 [2020-10-29 06:46:31,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:46:31,152 INFO L481 AbstractCegarLoop]: Abstraction has 8648 states and 10822 transitions. [2020-10-29 06:46:31,152 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:46:31,152 INFO L276 IsEmpty]: Start isEmpty. Operand 8648 states and 10822 transitions. [2020-10-29 06:46:31,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2020-10-29 06:46:31,169 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:46:31,170 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:46:31,170 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 06:46:31,170 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:46:31,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:46:31,171 INFO L82 PathProgramCache]: Analyzing trace with hash 1699303817, now seen corresponding path program 1 times [2020-10-29 06:46:31,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:46:31,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [777437460] [2020-10-29 06:46:31,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:46:31,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:31,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:31,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:31,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:31,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:32,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:32,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 367 [2020-10-29 06:46:32,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 06:46:32,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 794 [2020-10-29 06:46:32,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:32,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:32,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:46:32,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:46:32,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 297 [2020-10-29 06:46:32,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:46:32,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:46:32,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:32,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:32,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:32,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:46:32,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:46:32,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 06:46:32,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:32,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:32,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:46:32,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:46:32,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:46:32,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:46:32,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:46:32,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:32,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:32,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:32,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:32,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:46:32,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:46:32,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-29 06:46:32,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:32,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:32,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:46:32,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:46:32,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-29 06:46:32,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:46:32,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 06:46:32,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:32,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:32,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:32,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:32,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-29 06:46:32,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:46:32,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-29 06:46:32,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:32,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:32,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:46:32,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 153 [2020-10-29 06:46:32,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 06:46:32,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:46:32,765 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 111 proven. 2 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-10-29 06:46:32,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [777437460] [2020-10-29 06:46:32,765 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:46:32,766 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 06:46:32,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728719644] [2020-10-29 06:46:32,766 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 06:46:32,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:46:32,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 06:46:32,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:46:32,767 INFO L87 Difference]: Start difference. First operand 8648 states and 10822 transitions. Second operand 6 states. [2020-10-29 06:46:34,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:46:34,538 INFO L93 Difference]: Finished difference Result 17092 states and 21442 transitions. [2020-10-29 06:46:34,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 06:46:34,544 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 353 [2020-10-29 06:46:34,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:46:34,576 INFO L225 Difference]: With dead ends: 17092 [2020-10-29 06:46:34,576 INFO L226 Difference]: Without dead ends: 8638 [2020-10-29 06:46:34,593 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:46:34,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8638 states. [2020-10-29 06:46:34,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8638 to 8633. [2020-10-29 06:46:34,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8633 states. [2020-10-29 06:46:34,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8633 states to 8633 states and 10772 transitions. [2020-10-29 06:46:34,815 INFO L78 Accepts]: Start accepts. Automaton has 8633 states and 10772 transitions. Word has length 353 [2020-10-29 06:46:34,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:46:34,816 INFO L481 AbstractCegarLoop]: Abstraction has 8633 states and 10772 transitions. [2020-10-29 06:46:34,816 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 06:46:34,816 INFO L276 IsEmpty]: Start isEmpty. Operand 8633 states and 10772 transitions. [2020-10-29 06:46:34,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2020-10-29 06:46:34,833 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:46:34,834 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:46:34,834 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 06:46:34,834 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:46:34,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:46:34,835 INFO L82 PathProgramCache]: Analyzing trace with hash 1299865389, now seen corresponding path program 1 times [2020-10-29 06:46:34,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:46:34,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [988227877] [2020-10-29 06:46:34,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:46:34,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:34,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:35,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:36,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:37,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:37,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 385 [2020-10-29 06:46:37,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:46:37,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3020 [2020-10-29 06:46:37,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:37,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:37,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:46:37,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-29 06:46:37,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 06:46:37,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:46:38,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:46:38,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:38,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:38,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:38,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:46:38,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:46:38,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 06:46:38,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:38,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:38,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:46:38,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:46:38,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:46:38,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:46:38,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:46:38,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:38,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:38,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:38,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:46:38,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:46:38,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-29 06:46:38,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:38,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:38,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:46:38,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:46:38,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-29 06:46:38,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:46:38,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 06:46:38,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:38,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:38,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:38,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-29 06:46:38,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:46:38,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-29 06:46:38,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:38,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:38,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:46:38,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:46:38,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-29 06:46:38,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:46:38,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-10-29 06:46:38,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:38,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:38,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:38,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 06:46:38,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:46:38,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-29 06:46:38,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:38,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:38,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:46:38,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-29 06:46:38,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:46:38,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:46:38,541 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 268 proven. 72 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-29 06:46:38,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [988227877] [2020-10-29 06:46:38,542 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:46:38,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:46:38,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113892485] [2020-10-29 06:46:38,543 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:46:38,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:46:38,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:46:38,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:46:38,544 INFO L87 Difference]: Start difference. First operand 8633 states and 10772 transitions. Second operand 7 states. [2020-10-29 06:46:41,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:46:41,922 INFO L93 Difference]: Finished difference Result 17146 states and 21988 transitions. [2020-10-29 06:46:41,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 06:46:41,923 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 369 [2020-10-29 06:46:41,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:46:41,961 INFO L225 Difference]: With dead ends: 17146 [2020-10-29 06:46:41,961 INFO L226 Difference]: Without dead ends: 8707 [2020-10-29 06:46:41,981 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:46:41,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8707 states. [2020-10-29 06:46:42,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8707 to 8629. [2020-10-29 06:46:42,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8629 states. [2020-10-29 06:46:42,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8629 states to 8629 states and 10535 transitions. [2020-10-29 06:46:42,247 INFO L78 Accepts]: Start accepts. Automaton has 8629 states and 10535 transitions. Word has length 369 [2020-10-29 06:46:42,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:46:42,248 INFO L481 AbstractCegarLoop]: Abstraction has 8629 states and 10535 transitions. [2020-10-29 06:46:42,248 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:46:42,249 INFO L276 IsEmpty]: Start isEmpty. Operand 8629 states and 10535 transitions. [2020-10-29 06:46:42,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2020-10-29 06:46:42,267 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:46:42,268 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 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 06:46:42,268 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 06:46:42,268 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:46:42,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:46:42,269 INFO L82 PathProgramCache]: Analyzing trace with hash -1677363591, now seen corresponding path program 1 times [2020-10-29 06:46:42,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:46:42,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1650291276] [2020-10-29 06:46:42,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:46:42,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:42,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:43,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:43,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 399 [2020-10-29 06:46:43,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:46:43,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 752 [2020-10-29 06:46:43,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:43,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:43,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:46:43,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-29 06:46:43,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 06:46:43,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:46:43,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:46:43,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:43,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:43,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:43,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:46:43,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:46:43,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 06:46:43,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:43,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:43,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:46:43,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:46:43,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:46:43,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:46:43,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:46:43,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:43,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:43,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:43,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 06:46:43,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:46:43,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 06:46:43,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:43,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:43,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:46:43,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:46:43,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:46:43,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:46:43,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-29 06:46:43,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:43,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:43,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:43,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:46:43,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:46:43,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-29 06:46:43,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:43,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:43,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:46:43,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:46:43,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-29 06:46:43,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:46:43,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-29 06:46:43,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:43,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:43,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:43,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 06:46:43,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:46:43,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-29 06:46:43,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:43,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:43,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:46:43,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:46:43,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 06:46:43,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:46:43,700 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 310 proven. 2 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-29 06:46:43,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1650291276] [2020-10-29 06:46:43,701 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:46:43,701 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:46:43,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420958149] [2020-10-29 06:46:43,702 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:46:43,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:46:43,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:46:43,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:46:43,703 INFO L87 Difference]: Start difference. First operand 8629 states and 10535 transitions. Second operand 7 states. [2020-10-29 06:46:46,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:46:46,879 INFO L93 Difference]: Finished difference Result 18457 states and 22499 transitions. [2020-10-29 06:46:46,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 06:46:46,880 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 383 [2020-10-29 06:46:46,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:46:46,918 INFO L225 Difference]: With dead ends: 18457 [2020-10-29 06:46:46,918 INFO L226 Difference]: Without dead ends: 10022 [2020-10-29 06:46:46,938 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:46:46,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10022 states. [2020-10-29 06:46:47,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10022 to 10001. [2020-10-29 06:46:47,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10001 states. [2020-10-29 06:46:47,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10001 states to 10001 states and 11971 transitions. [2020-10-29 06:46:47,216 INFO L78 Accepts]: Start accepts. Automaton has 10001 states and 11971 transitions. Word has length 383 [2020-10-29 06:46:47,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:46:47,217 INFO L481 AbstractCegarLoop]: Abstraction has 10001 states and 11971 transitions. [2020-10-29 06:46:47,217 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:46:47,218 INFO L276 IsEmpty]: Start isEmpty. Operand 10001 states and 11971 transitions. [2020-10-29 06:46:47,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2020-10-29 06:46:47,234 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:46:47,235 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:46:47,235 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 06:46:47,235 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:46:47,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:46:47,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1234001795, now seen corresponding path program 1 times [2020-10-29 06:46:47,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:46:47,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2049473959] [2020-10-29 06:46:47,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:46:47,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:47,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:47,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:48,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:49,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:51,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:51,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:51,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 402 [2020-10-29 06:46:51,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 06:46:51,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4643 [2020-10-29 06:46:51,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:51,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:51,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 06:46:51,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:46:51,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 333 [2020-10-29 06:46:51,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:46:52,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:46:52,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:52,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:52,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:52,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:46:52,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:46:52,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 06:46:52,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:52,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:52,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:46:52,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:46:52,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:46:52,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:46:52,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:46:52,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:52,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:52,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:52,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 06:46:52,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:46:52,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-29 06:46:52,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:52,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:52,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:46:52,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:46:52,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-29 06:46:52,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:46:52,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-29 06:46:52,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:52,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:52,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:52,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 06:46:52,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:46:52,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-29 06:46:52,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:52,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:52,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 06:46:52,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:46:52,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-29 06:46:52,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:46:52,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2020-10-29 06:46:52,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:52,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:52,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:52,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-29 06:46:52,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:46:52,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-29 06:46:52,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:52,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:52,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:46:52,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:46:52,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-29 06:46:52,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:46:52,920 INFO L134 CoverageAnalysis]: Checked inductivity of 453 backedges. 355 proven. 13 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-29 06:46:52,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2049473959] [2020-10-29 06:46:52,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:46:52,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 06:46:52,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386990120] [2020-10-29 06:46:52,922 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 06:46:52,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:46:52,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 06:46:52,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-29 06:46:52,922 INFO L87 Difference]: Start difference. First operand 10001 states and 11971 transitions. Second operand 10 states. [2020-10-29 06:46:53,084 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2020-10-29 06:46:57,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:46:57,778 INFO L93 Difference]: Finished difference Result 25855 states and 31369 transitions. [2020-10-29 06:46:57,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 06:46:57,779 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 386 [2020-10-29 06:46:57,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:46:57,821 INFO L225 Difference]: With dead ends: 25855 [2020-10-29 06:46:57,821 INFO L226 Difference]: Without dead ends: 15458 [2020-10-29 06:46:57,836 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2020-10-29 06:46:57,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15458 states. [2020-10-29 06:46:58,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15458 to 15217. [2020-10-29 06:46:58,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15217 states. [2020-10-29 06:46:58,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15217 states to 15217 states and 18092 transitions. [2020-10-29 06:46:58,189 INFO L78 Accepts]: Start accepts. Automaton has 15217 states and 18092 transitions. Word has length 386 [2020-10-29 06:46:58,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:46:58,190 INFO L481 AbstractCegarLoop]: Abstraction has 15217 states and 18092 transitions. [2020-10-29 06:46:58,190 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 06:46:58,190 INFO L276 IsEmpty]: Start isEmpty. Operand 15217 states and 18092 transitions. [2020-10-29 06:46:58,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2020-10-29 06:46:58,222 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:46:58,223 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:46:58,223 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 06:46:58,223 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:46:58,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:46:58,224 INFO L82 PathProgramCache]: Analyzing trace with hash 1141108907, now seen corresponding path program 1 times [2020-10-29 06:46:58,224 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:46:58,224 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [685796523] [2020-10-29 06:46:58,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:46:58,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:58,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:58,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:59,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:00,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:00,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 433 [2020-10-29 06:47:00,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:47:00,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2195 [2020-10-29 06:47:00,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:00,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:00,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:47:00,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-29 06:47:00,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-29 06:47:00,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:00,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:47:00,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:00,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:00,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:00,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:47:00,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:00,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 06:47:00,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:00,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:00,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:47:00,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:47:00,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:47:00,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:00,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:47:00,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:00,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:00,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:00,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 06:47:00,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:00,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-29 06:47:00,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:00,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:00,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:47:00,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:47:00,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 06:47:00,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:00,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-29 06:47:00,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:00,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:00,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:00,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 06:47:00,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:00,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-29 06:47:00,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:00,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:00,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:47:00,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:47:00,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-29 06:47:00,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:01,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2020-10-29 06:47:01,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:01,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:01,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:01,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-29 06:47:01,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:01,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-29 06:47:01,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:01,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:01,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:47:01,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 150 [2020-10-29 06:47:01,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:47:01,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:01,388 INFO L134 CoverageAnalysis]: Checked inductivity of 453 backedges. 252 proven. 85 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2020-10-29 06:47:01,389 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [685796523] [2020-10-29 06:47:01,389 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:47:01,389 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:47:01,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374847905] [2020-10-29 06:47:01,390 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:47:01,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:47:01,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:47:01,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:47:01,391 INFO L87 Difference]: Start difference. First operand 15217 states and 18092 transitions. Second operand 7 states. [2020-10-29 06:47:04,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:47:04,677 INFO L93 Difference]: Finished difference Result 32304 states and 40227 transitions. [2020-10-29 06:47:04,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 06:47:04,678 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 417 [2020-10-29 06:47:04,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:47:04,740 INFO L225 Difference]: With dead ends: 32304 [2020-10-29 06:47:04,740 INFO L226 Difference]: Without dead ends: 17471 [2020-10-29 06:47:04,761 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 06:47:04,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17471 states. [2020-10-29 06:47:05,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17471 to 16957. [2020-10-29 06:47:05,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16957 states. [2020-10-29 06:47:05,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16957 states to 16957 states and 20179 transitions. [2020-10-29 06:47:05,193 INFO L78 Accepts]: Start accepts. Automaton has 16957 states and 20179 transitions. Word has length 417 [2020-10-29 06:47:05,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:47:05,193 INFO L481 AbstractCegarLoop]: Abstraction has 16957 states and 20179 transitions. [2020-10-29 06:47:05,193 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:47:05,194 INFO L276 IsEmpty]: Start isEmpty. Operand 16957 states and 20179 transitions. [2020-10-29 06:47:05,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2020-10-29 06:47:05,216 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:47:05,217 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:47:05,217 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 06:47:05,217 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:47:05,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:47:05,218 INFO L82 PathProgramCache]: Analyzing trace with hash -889184641, now seen corresponding path program 1 times [2020-10-29 06:47:05,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:47:05,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [914404026] [2020-10-29 06:47:05,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:47:05,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:05,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:05,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:06,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:06,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 443 [2020-10-29 06:47:06,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:47:06,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1031 [2020-10-29 06:47:06,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:06,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:06,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:47:06,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 378 [2020-10-29 06:47:06,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-29 06:47:06,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:06,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:47:06,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:06,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:06,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:06,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:47:06,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:06,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 06:47:06,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:06,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:06,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:47:06,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:47:06,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:47:06,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:06,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:47:06,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:06,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:06,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:06,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-29 06:47:06,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:06,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-29 06:47:06,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:06,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:06,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:47:06,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:47:06,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:47:06,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:06,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-29 06:47:06,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:06,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:06,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:06,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 06:47:06,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:06,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 06:47:06,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:06,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:06,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:47:06,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:47:06,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:47:06,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:06,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-29 06:47:06,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:06,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:06,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:06,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-29 06:47:06,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:06,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-29 06:47:06,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:06,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:06,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:47:06,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:47:06,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-10-29 06:47:06,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:07,093 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 168 proven. 3 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2020-10-29 06:47:07,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [914404026] [2020-10-29 06:47:07,093 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:47:07,094 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 06:47:07,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066687605] [2020-10-29 06:47:07,094 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 06:47:07,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:47:07,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 06:47:07,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 06:47:07,095 INFO L87 Difference]: Start difference. First operand 16957 states and 20179 transitions. Second operand 5 states. [2020-10-29 06:47:09,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:47:09,900 INFO L93 Difference]: Finished difference Result 19810 states and 23617 transitions. [2020-10-29 06:47:09,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 06:47:09,901 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 427 [2020-10-29 06:47:09,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:47:09,953 INFO L225 Difference]: With dead ends: 19810 [2020-10-29 06:47:09,953 INFO L226 Difference]: Without dead ends: 19807 [2020-10-29 06:47:09,963 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:47:09,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19807 states. [2020-10-29 06:47:10,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19807 to 18845. [2020-10-29 06:47:10,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18845 states. [2020-10-29 06:47:10,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18845 states to 18845 states and 22519 transitions. [2020-10-29 06:47:10,545 INFO L78 Accepts]: Start accepts. Automaton has 18845 states and 22519 transitions. Word has length 427 [2020-10-29 06:47:10,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:47:10,545 INFO L481 AbstractCegarLoop]: Abstraction has 18845 states and 22519 transitions. [2020-10-29 06:47:10,546 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 06:47:10,546 INFO L276 IsEmpty]: Start isEmpty. Operand 18845 states and 22519 transitions. [2020-10-29 06:47:10,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2020-10-29 06:47:10,576 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:47:10,577 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:47:10,577 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 06:47:10,577 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:47:10,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:47:10,578 INFO L82 PathProgramCache]: Analyzing trace with hash 2037800186, now seen corresponding path program 1 times [2020-10-29 06:47:10,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:47:10,578 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [432639753] [2020-10-29 06:47:10,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:47:10,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:10,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:10,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:11,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:12,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:12,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:15,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:15,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 478 [2020-10-29 06:47:15,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 06:47:15,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 06:47:15,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:15,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:15,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:47:15,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-29 06:47:15,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-29 06:47:15,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:15,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:47:15,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:15,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:15,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:15,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:47:15,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:15,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 06:47:15,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:15,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:15,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:47:15,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:47:15,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:47:15,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:15,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:47:15,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:15,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:16,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:16,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 06:47:16,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:16,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-29 06:47:16,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:16,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:16,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:47:16,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:47:16,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 06:47:16,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:16,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-29 06:47:16,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:16,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:16,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:16,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 06:47:16,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:16,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-29 06:47:16,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:16,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:16,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:47:16,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:47:16,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 06:47:16,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:16,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-10-29 06:47:16,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:16,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:16,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:16,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 06:47:16,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:16,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 06:47:16,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:16,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:16,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:47:16,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-29 06:47:16,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:47:16,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:16,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-10-29 06:47:16,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:16,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:16,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:16,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-29 06:47:16,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:16,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-29 06:47:16,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:16,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:16,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:47:16,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 119 [2020-10-29 06:47:16,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:47:16,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:16,595 INFO L134 CoverageAnalysis]: Checked inductivity of 730 backedges. 299 proven. 144 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2020-10-29 06:47:16,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [432639753] [2020-10-29 06:47:16,595 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:47:16,595 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:47:16,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185247428] [2020-10-29 06:47:16,596 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:47:16,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:47:16,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:47:16,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:47:16,597 INFO L87 Difference]: Start difference. First operand 18845 states and 22519 transitions. Second operand 7 states. [2020-10-29 06:47:19,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:47:19,920 INFO L93 Difference]: Finished difference Result 34060 states and 40919 transitions. [2020-10-29 06:47:19,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 06:47:19,921 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 460 [2020-10-29 06:47:19,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:47:19,974 INFO L225 Difference]: With dead ends: 34060 [2020-10-29 06:47:19,975 INFO L226 Difference]: Without dead ends: 19451 [2020-10-29 06:47:20,000 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:47:20,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19451 states. [2020-10-29 06:47:20,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19451 to 19421. [2020-10-29 06:47:20,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19421 states. [2020-10-29 06:47:20,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19421 states to 19421 states and 23144 transitions. [2020-10-29 06:47:20,425 INFO L78 Accepts]: Start accepts. Automaton has 19421 states and 23144 transitions. Word has length 460 [2020-10-29 06:47:20,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:47:20,425 INFO L481 AbstractCegarLoop]: Abstraction has 19421 states and 23144 transitions. [2020-10-29 06:47:20,426 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:47:20,426 INFO L276 IsEmpty]: Start isEmpty. Operand 19421 states and 23144 transitions. [2020-10-29 06:47:20,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2020-10-29 06:47:20,446 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:47:20,449 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 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 06:47:20,449 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 06:47:20,449 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:47:20,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:47:20,450 INFO L82 PathProgramCache]: Analyzing trace with hash -1084777969, now seen corresponding path program 1 times [2020-10-29 06:47:20,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:47:20,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [329084313] [2020-10-29 06:47:20,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:47:20,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:20,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:21,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:21,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 478 [2020-10-29 06:47:21,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:21,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 540 [2020-10-29 06:47:21,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:21,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:21,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:47:21,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 338 [2020-10-29 06:47:21,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 06:47:21,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:21,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:47:21,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:21,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:21,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:21,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:47:21,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:21,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 06:47:21,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:21,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:21,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:47:21,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:47:21,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:47:21,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:21,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:47:21,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:21,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:21,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:21,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-29 06:47:21,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:21,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-29 06:47:21,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:21,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:21,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:47:21,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:47:21,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:47:21,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:21,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-29 06:47:21,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:21,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:21,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:21,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-29 06:47:21,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:21,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 245 [2020-10-29 06:47:21,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:21,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:21,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:47:21,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:47:21,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-29 06:47:21,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:21,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2020-10-29 06:47:21,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:21,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:21,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:21,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 06:47:21,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:21,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-29 06:47:21,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:21,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:21,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:47:21,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:47:21,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 06:47:21,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:21,972 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 310 proven. 2 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2020-10-29 06:47:21,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [329084313] [2020-10-29 06:47:21,973 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:47:21,973 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:47:21,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713435723] [2020-10-29 06:47:21,974 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:47:21,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:47:21,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:47:21,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:47:21,975 INFO L87 Difference]: Start difference. First operand 19421 states and 23144 transitions. Second operand 7 states. [2020-10-29 06:47:25,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:47:25,255 INFO L93 Difference]: Finished difference Result 35965 states and 43078 transitions. [2020-10-29 06:47:25,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 06:47:25,256 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 462 [2020-10-29 06:47:25,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:47:25,302 INFO L225 Difference]: With dead ends: 35965 [2020-10-29 06:47:25,302 INFO L226 Difference]: Without dead ends: 20790 [2020-10-29 06:47:25,328 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:47:25,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20790 states. [2020-10-29 06:47:25,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20790 to 20751. [2020-10-29 06:47:25,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20751 states. [2020-10-29 06:47:25,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20751 states to 20751 states and 24676 transitions. [2020-10-29 06:47:25,936 INFO L78 Accepts]: Start accepts. Automaton has 20751 states and 24676 transitions. Word has length 462 [2020-10-29 06:47:25,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:47:25,937 INFO L481 AbstractCegarLoop]: Abstraction has 20751 states and 24676 transitions. [2020-10-29 06:47:25,937 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:47:25,937 INFO L276 IsEmpty]: Start isEmpty. Operand 20751 states and 24676 transitions. [2020-10-29 06:47:25,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 464 [2020-10-29 06:47:25,965 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:47:25,966 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:47:25,966 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 06:47:25,966 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:47:25,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:47:25,967 INFO L82 PathProgramCache]: Analyzing trace with hash -558485757, now seen corresponding path program 1 times [2020-10-29 06:47:25,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:47:25,967 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1456619451] [2020-10-29 06:47:25,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:47:26,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:26,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:26,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:26,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:28,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:28,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 479 [2020-10-29 06:47:28,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:47:28,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2816 [2020-10-29 06:47:28,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:28,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:28,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:47:28,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-29 06:47:28,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-10-29 06:47:28,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:29,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:47:29,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:29,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:29,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:29,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:47:29,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:29,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 06:47:29,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:29,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:29,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:47:29,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:47:29,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:47:29,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:29,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:47:29,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:29,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:29,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:29,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 06:47:29,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:29,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 06:47:29,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:29,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:29,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:47:29,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:47:29,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:47:29,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:29,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-29 06:47:29,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:29,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:29,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:29,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:47:29,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:29,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-29 06:47:29,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:29,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:29,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:47:29,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:47:29,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-29 06:47:29,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:29,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-29 06:47:29,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:29,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:29,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:29,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-29 06:47:29,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:29,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-29 06:47:29,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:29,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:29,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:47:29,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:47:29,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-29 06:47:29,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:29,902 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 411 proven. 2 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-29 06:47:29,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1456619451] [2020-10-29 06:47:29,903 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:47:29,903 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:47:29,903 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164244406] [2020-10-29 06:47:29,903 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:47:29,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:47:29,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:47:29,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:47:29,904 INFO L87 Difference]: Start difference. First operand 20751 states and 24676 transitions. Second operand 7 states. [2020-10-29 06:47:33,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:47:33,481 INFO L93 Difference]: Finished difference Result 38831 states and 46537 transitions. [2020-10-29 06:47:33,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 06:47:33,482 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 463 [2020-10-29 06:47:33,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:47:33,528 INFO L225 Difference]: With dead ends: 38831 [2020-10-29 06:47:33,528 INFO L226 Difference]: Without dead ends: 22326 [2020-10-29 06:47:33,551 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 06:47:33,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22326 states. [2020-10-29 06:47:33,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22326 to 22284. [2020-10-29 06:47:33,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22284 states. [2020-10-29 06:47:33,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22284 states to 22284 states and 26384 transitions. [2020-10-29 06:47:33,974 INFO L78 Accepts]: Start accepts. Automaton has 22284 states and 26384 transitions. Word has length 463 [2020-10-29 06:47:33,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:47:33,975 INFO L481 AbstractCegarLoop]: Abstraction has 22284 states and 26384 transitions. [2020-10-29 06:47:33,975 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:47:33,975 INFO L276 IsEmpty]: Start isEmpty. Operand 22284 states and 26384 transitions. [2020-10-29 06:47:33,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2020-10-29 06:47:33,994 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:47:33,994 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:47:33,994 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 06:47:33,995 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:47:33,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:47:33,995 INFO L82 PathProgramCache]: Analyzing trace with hash -799178322, now seen corresponding path program 1 times [2020-10-29 06:47:33,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:47:33,995 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [642183308] [2020-10-29 06:47:33,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:47:34,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:34,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:34,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:35,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:36,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:36,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 486 [2020-10-29 06:47:36,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:47:36,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2676 [2020-10-29 06:47:36,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:36,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:36,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 06:47:36,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-29 06:47:36,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 175 [2020-10-29 06:47:36,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:36,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:47:36,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:36,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:36,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:36,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:47:36,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:36,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 06:47:36,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:36,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:36,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:47:36,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:47:36,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:47:36,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:37,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:47:37,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:37,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:37,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:37,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 06:47:37,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:37,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 06:47:37,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:37,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:37,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:47:37,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:47:37,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:47:37,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:37,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-29 06:47:37,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:37,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:37,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:37,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:47:37,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:37,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 262 [2020-10-29 06:47:37,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:37,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:37,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:47:37,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:47:37,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-29 06:47:37,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:37,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-29 06:47:37,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:37,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:37,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:37,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-29 06:47:37,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:37,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-29 06:47:37,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:37,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:37,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:47:37,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:47:37,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-29 06:47:37,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:37,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-10-29 06:47:37,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:37,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:37,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:37,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 06:47:37,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:37,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-10-29 06:47:37,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:37,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:37,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 06:47:37,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:47:37,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 06:47:37,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:38,266 INFO L134 CoverageAnalysis]: Checked inductivity of 725 backedges. 513 proven. 24 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2020-10-29 06:47:38,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [642183308] [2020-10-29 06:47:38,267 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:47:38,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 06:47:38,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739789459] [2020-10-29 06:47:38,268 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 06:47:38,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:47:38,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 06:47:38,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-29 06:47:38,269 INFO L87 Difference]: Start difference. First operand 22284 states and 26384 transitions. Second operand 8 states. [2020-10-29 06:47:48,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:47:48,177 INFO L93 Difference]: Finished difference Result 45960 states and 54411 transitions. [2020-10-29 06:47:48,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 06:47:48,178 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 468 [2020-10-29 06:47:48,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:47:48,236 INFO L225 Difference]: With dead ends: 45960 [2020-10-29 06:47:48,236 INFO L226 Difference]: Without dead ends: 27890 [2020-10-29 06:47:48,259 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:47:48,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27890 states. [2020-10-29 06:47:48,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27890 to 27082. [2020-10-29 06:47:48,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27082 states. [2020-10-29 06:47:48,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27082 states to 27082 states and 31905 transitions. [2020-10-29 06:47:48,934 INFO L78 Accepts]: Start accepts. Automaton has 27082 states and 31905 transitions. Word has length 468 [2020-10-29 06:47:48,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:47:48,935 INFO L481 AbstractCegarLoop]: Abstraction has 27082 states and 31905 transitions. [2020-10-29 06:47:48,935 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 06:47:48,935 INFO L276 IsEmpty]: Start isEmpty. Operand 27082 states and 31905 transitions. [2020-10-29 06:47:48,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2020-10-29 06:47:48,959 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:47:48,960 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:47:48,960 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-29 06:47:48,960 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:47:48,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:47:48,960 INFO L82 PathProgramCache]: Analyzing trace with hash -414756186, now seen corresponding path program 1 times [2020-10-29 06:47:48,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:47:48,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [658985323] [2020-10-29 06:47:48,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:47:49,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:49,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:49,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:49,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:50,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:51,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:54,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:54,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 488 [2020-10-29 06:47:54,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 06:47:54,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-29 06:47:54,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:54,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:54,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:47:54,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-29 06:47:54,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-29 06:47:54,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:54,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:47:54,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:54,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:54,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:54,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:47:54,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:54,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 06:47:54,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:54,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:54,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:47:54,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:47:54,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:47:54,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:54,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:47:54,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:54,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:54,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:54,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-29 06:47:54,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:54,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-29 06:47:54,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:54,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:54,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:47:54,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:47:54,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:47:54,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:54,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-29 06:47:54,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:54,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:54,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:54,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 06:47:54,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:54,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-29 06:47:54,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:54,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:54,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:47:54,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:47:54,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-29 06:47:54,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:54,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-29 06:47:54,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:54,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:54,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:54,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 06:47:54,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:54,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-29 06:47:54,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:54,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:54,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:47:54,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:47:54,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-29 06:47:54,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:54,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 06:47:54,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:54,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:54,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:54,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-29 06:47:54,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:54,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-29 06:47:54,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:54,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:54,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:47:54,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 119 [2020-10-29 06:47:54,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:47:54,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:54,755 INFO L134 CoverageAnalysis]: Checked inductivity of 735 backedges. 387 proven. 85 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2020-10-29 06:47:54,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [658985323] [2020-10-29 06:47:54,756 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:47:54,756 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:47:54,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433208355] [2020-10-29 06:47:54,757 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:47:54,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:47:54,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:47:54,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:47:54,757 INFO L87 Difference]: Start difference. First operand 27082 states and 31905 transitions. Second operand 7 states. [2020-10-29 06:48:00,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:48:00,925 INFO L93 Difference]: Finished difference Result 51267 states and 60600 transitions. [2020-10-29 06:48:00,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 06:48:00,933 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 470 [2020-10-29 06:48:00,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:48:01,013 INFO L225 Difference]: With dead ends: 51267 [2020-10-29 06:48:01,014 INFO L226 Difference]: Without dead ends: 28415 [2020-10-29 06:48:01,039 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:48:01,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28415 states. [2020-10-29 06:48:01,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28415 to 25733. [2020-10-29 06:48:01,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25733 states. [2020-10-29 06:48:01,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25733 states to 25733 states and 30152 transitions. [2020-10-29 06:48:01,581 INFO L78 Accepts]: Start accepts. Automaton has 25733 states and 30152 transitions. Word has length 470 [2020-10-29 06:48:01,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:48:01,582 INFO L481 AbstractCegarLoop]: Abstraction has 25733 states and 30152 transitions. [2020-10-29 06:48:01,582 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:48:01,582 INFO L276 IsEmpty]: Start isEmpty. Operand 25733 states and 30152 transitions. [2020-10-29 06:48:01,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 486 [2020-10-29 06:48:01,607 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:48:01,609 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 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 06:48:01,609 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-29 06:48:01,609 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:48:01,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:48:01,610 INFO L82 PathProgramCache]: Analyzing trace with hash 95489608, now seen corresponding path program 1 times [2020-10-29 06:48:01,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:48:01,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1851707282] [2020-10-29 06:48:01,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:48:01,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:01,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:01,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:02,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:04,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:04,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 501 [2020-10-29 06:48:04,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:48:04,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2614 [2020-10-29 06:48:04,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:04,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:04,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:48:04,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 281 [2020-10-29 06:48:04,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-10-29 06:48:04,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:04,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:48:04,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:04,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:04,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:04,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:48:04,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:04,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 06:48:04,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:04,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:04,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:48:04,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:04,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:48:04,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:48:04,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:48:04,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:04,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:04,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:04,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:48:04,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:04,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-29 06:48:04,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:04,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:04,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:48:04,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:04,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:48:04,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:48:04,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 06:48:04,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:04,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:04,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:04,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-29 06:48:04,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:04,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-29 06:48:04,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:04,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:04,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:48:04,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:04,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-29 06:48:04,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:04,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-29 06:48:05,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:05,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:05,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:05,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-29 06:48:05,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:05,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-10-29 06:48:05,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:05,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:05,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:48:05,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:48:05,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-29 06:48:05,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:05,906 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 431 proven. 2 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2020-10-29 06:48:05,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1851707282] [2020-10-29 06:48:05,907 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:48:05,911 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:48:05,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235077718] [2020-10-29 06:48:05,912 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:48:05,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:48:05,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:48:05,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:48:05,913 INFO L87 Difference]: Start difference. First operand 25733 states and 30152 transitions. Second operand 7 states. [2020-10-29 06:48:10,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:48:10,430 INFO L93 Difference]: Finished difference Result 47785 states and 57436 transitions. [2020-10-29 06:48:10,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 06:48:10,431 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 485 [2020-10-29 06:48:10,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:48:10,497 INFO L225 Difference]: With dead ends: 47785 [2020-10-29 06:48:10,498 INFO L226 Difference]: Without dead ends: 27062 [2020-10-29 06:48:10,526 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:48:10,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27062 states. [2020-10-29 06:48:10,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27062 to 26289. [2020-10-29 06:48:10,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26289 states. [2020-10-29 06:48:10,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26289 states to 26289 states and 30600 transitions. [2020-10-29 06:48:10,988 INFO L78 Accepts]: Start accepts. Automaton has 26289 states and 30600 transitions. Word has length 485 [2020-10-29 06:48:10,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:48:10,989 INFO L481 AbstractCegarLoop]: Abstraction has 26289 states and 30600 transitions. [2020-10-29 06:48:10,989 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:48:10,989 INFO L276 IsEmpty]: Start isEmpty. Operand 26289 states and 30600 transitions. [2020-10-29 06:48:11,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 498 [2020-10-29 06:48:11,008 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:48:11,008 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:48:11,008 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-29 06:48:11,008 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:48:11,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:48:11,009 INFO L82 PathProgramCache]: Analyzing trace with hash -886769038, now seen corresponding path program 1 times [2020-10-29 06:48:11,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:48:11,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1865623998] [2020-10-29 06:48:11,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:48:11,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:11,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:11,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:12,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:12,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:14,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:14,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 515 [2020-10-29 06:48:14,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 06:48:14,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3103 [2020-10-29 06:48:14,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:14,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:14,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:48:14,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 239 [2020-10-29 06:48:14,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-29 06:48:14,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:14,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:48:14,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:14,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:14,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:14,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:48:14,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:14,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 06:48:14,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:14,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:14,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:48:14,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:14,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:48:14,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:14,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:48:14,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:14,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:14,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:14,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-29 06:48:14,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:14,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 06:48:14,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:14,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:14,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:48:14,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:14,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:48:14,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:14,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-29 06:48:14,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:14,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:14,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:14,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-29 06:48:14,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:14,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-29 06:48:14,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:14,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:14,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:48:14,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:14,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-29 06:48:14,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:14,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-10-29 06:48:14,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:14,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:14,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:14,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 06:48:14,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:14,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-29 06:48:14,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:14,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:14,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:48:14,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:48:14,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-29 06:48:14,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:14,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2020-10-29 06:48:14,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:14,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:14,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:14,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-29 06:48:14,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:14,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-29 06:48:14,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:14,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:14,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:48:14,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 119 [2020-10-29 06:48:14,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:48:14,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:15,000 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 399 proven. 85 refuted. 0 times theorem prover too weak. 317 trivial. 0 not checked. [2020-10-29 06:48:15,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1865623998] [2020-10-29 06:48:15,000 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:48:15,001 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:48:15,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081612315] [2020-10-29 06:48:15,001 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:48:15,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:48:15,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:48:15,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:48:15,002 INFO L87 Difference]: Start difference. First operand 26289 states and 30600 transitions. Second operand 7 states. [2020-10-29 06:48:20,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:48:20,863 INFO L93 Difference]: Finished difference Result 49506 states and 57756 transitions. [2020-10-29 06:48:20,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 06:48:20,865 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 497 [2020-10-29 06:48:20,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:48:20,925 INFO L225 Difference]: With dead ends: 49506 [2020-10-29 06:48:20,925 INFO L226 Difference]: Without dead ends: 27855 [2020-10-29 06:48:20,949 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:48:20,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27855 states. [2020-10-29 06:48:21,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27855 to 26095. [2020-10-29 06:48:21,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26095 states. [2020-10-29 06:48:21,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26095 states to 26095 states and 30333 transitions. [2020-10-29 06:48:21,347 INFO L78 Accepts]: Start accepts. Automaton has 26095 states and 30333 transitions. Word has length 497 [2020-10-29 06:48:21,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:48:21,348 INFO L481 AbstractCegarLoop]: Abstraction has 26095 states and 30333 transitions. [2020-10-29 06:48:21,348 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:48:21,348 INFO L276 IsEmpty]: Start isEmpty. Operand 26095 states and 30333 transitions. [2020-10-29 06:48:21,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2020-10-29 06:48:21,364 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:48:21,365 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:48:21,365 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-29 06:48:21,365 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:48:21,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:48:21,366 INFO L82 PathProgramCache]: Analyzing trace with hash -1458591913, now seen corresponding path program 1 times [2020-10-29 06:48:21,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:48:21,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1809064112] [2020-10-29 06:48:21,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:48:21,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:21,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:21,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:22,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:23,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:26,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:26,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 524 [2020-10-29 06:48:26,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 06:48:26,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-29 06:48:26,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:26,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:26,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:48:26,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-29 06:48:26,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-29 06:48:26,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:26,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:48:26,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:26,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:26,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:26,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:48:26,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:26,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 06:48:26,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:26,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:26,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:48:26,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:26,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:48:26,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:26,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:48:26,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:26,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:26,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:26,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-29 06:48:26,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:26,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-29 06:48:26,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:26,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:26,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:48:26,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:26,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-29 06:48:26,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:26,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-29 06:48:26,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:26,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:26,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:26,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 06:48:26,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:26,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-29 06:48:26,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:26,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:26,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:48:26,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:48:26,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 06:48:26,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:27,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2020-10-29 06:48:27,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:27,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:27,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:27,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 06:48:27,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:27,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 06:48:27,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:27,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:27,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:48:27,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-29 06:48:27,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:48:27,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:27,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2020-10-29 06:48:27,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:27,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:27,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:27,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-29 06:48:27,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:27,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-29 06:48:27,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:27,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:27,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:48:27,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 119 [2020-10-29 06:48:27,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:48:27,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:27,448 INFO L134 CoverageAnalysis]: Checked inductivity of 819 backedges. 335 proven. 192 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2020-10-29 06:48:27,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1809064112] [2020-10-29 06:48:27,449 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:48:27,449 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:48:27,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599151284] [2020-10-29 06:48:27,449 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:48:27,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:48:27,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:48:27,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:48:27,450 INFO L87 Difference]: Start difference. First operand 26095 states and 30333 transitions. Second operand 7 states. [2020-10-29 06:48:31,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:48:31,361 INFO L93 Difference]: Finished difference Result 55642 states and 64712 transitions. [2020-10-29 06:48:31,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 06:48:31,363 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 506 [2020-10-29 06:48:31,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:48:31,429 INFO L225 Difference]: With dead ends: 55642 [2020-10-29 06:48:31,429 INFO L226 Difference]: Without dead ends: 29523 [2020-10-29 06:48:31,458 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-29 06:48:31,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29523 states. [2020-10-29 06:48:31,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29523 to 27197. [2020-10-29 06:48:31,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27197 states. [2020-10-29 06:48:31,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27197 states to 27197 states and 30882 transitions. [2020-10-29 06:48:31,862 INFO L78 Accepts]: Start accepts. Automaton has 27197 states and 30882 transitions. Word has length 506 [2020-10-29 06:48:31,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:48:31,863 INFO L481 AbstractCegarLoop]: Abstraction has 27197 states and 30882 transitions. [2020-10-29 06:48:31,863 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:48:31,863 INFO L276 IsEmpty]: Start isEmpty. Operand 27197 states and 30882 transitions. [2020-10-29 06:48:31,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 528 [2020-10-29 06:48:31,879 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:48:31,879 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:48:31,880 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-29 06:48:31,880 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:48:31,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:48:31,880 INFO L82 PathProgramCache]: Analyzing trace with hash 2045641269, now seen corresponding path program 1 times [2020-10-29 06:48:31,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:48:31,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1933766618] [2020-10-29 06:48:31,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:48:31,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:32,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:32,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:33,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:34,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:36,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:36,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 545 [2020-10-29 06:48:36,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 06:48:36,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 06:48:36,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:36,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:36,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:48:36,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 269 [2020-10-29 06:48:36,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-29 06:48:36,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:37,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:48:37,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:37,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:37,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:37,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:48:37,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:37,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 06:48:37,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:37,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:37,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:48:37,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:37,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:48:37,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:37,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:48:37,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:37,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:37,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:37,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-29 06:48:37,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:37,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 06:48:37,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:37,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:37,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:48:37,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:37,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:48:37,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:37,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-29 06:48:37,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:37,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:37,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:37,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 06:48:37,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:37,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-29 06:48:37,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:37,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:37,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:48:37,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:37,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-29 06:48:37,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:37,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2020-10-29 06:48:37,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:37,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:37,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:37,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 06:48:37,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:37,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-29 06:48:37,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:37,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:37,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:48:37,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:48:37,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-29 06:48:37,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:37,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2020-10-29 06:48:37,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:37,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:37,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:37,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-29 06:48:37,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:37,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-29 06:48:37,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:37,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:37,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:48:37,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 119 [2020-10-29 06:48:37,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:48:37,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:37,751 INFO L134 CoverageAnalysis]: Checked inductivity of 819 backedges. 399 proven. 85 refuted. 0 times theorem prover too weak. 335 trivial. 0 not checked. [2020-10-29 06:48:37,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1933766618] [2020-10-29 06:48:37,751 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:48:37,751 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:48:37,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89844255] [2020-10-29 06:48:37,752 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:48:37,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:48:37,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:48:37,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:48:37,753 INFO L87 Difference]: Start difference. First operand 27197 states and 30882 transitions. Second operand 7 states. [2020-10-29 06:48:41,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:48:41,475 INFO L93 Difference]: Finished difference Result 50215 states and 57181 transitions. [2020-10-29 06:48:41,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 06:48:41,476 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 527 [2020-10-29 06:48:41,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:48:41,548 INFO L225 Difference]: With dead ends: 50215 [2020-10-29 06:48:41,548 INFO L226 Difference]: Without dead ends: 28794 [2020-10-29 06:48:41,573 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:48:41,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28794 states. [2020-10-29 06:48:41,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28794 to 27579. [2020-10-29 06:48:41,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27579 states. [2020-10-29 06:48:41,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27579 states to 27579 states and 31333 transitions. [2020-10-29 06:48:41,989 INFO L78 Accepts]: Start accepts. Automaton has 27579 states and 31333 transitions. Word has length 527 [2020-10-29 06:48:41,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:48:41,989 INFO L481 AbstractCegarLoop]: Abstraction has 27579 states and 31333 transitions. [2020-10-29 06:48:41,989 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:48:41,989 INFO L276 IsEmpty]: Start isEmpty. Operand 27579 states and 31333 transitions. [2020-10-29 06:48:42,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 561 [2020-10-29 06:48:42,007 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:48:42,008 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:48:42,008 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-29 06:48:42,008 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:48:42,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:48:42,009 INFO L82 PathProgramCache]: Analyzing trace with hash 798860701, now seen corresponding path program 1 times [2020-10-29 06:48:42,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:48:42,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1411619114] [2020-10-29 06:48:42,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:48:42,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:42,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:42,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:42,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:43,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:44,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:47,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:47,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 578 [2020-10-29 06:48:47,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 06:48:47,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-29 06:48:47,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:47,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:47,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:48:47,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-29 06:48:47,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-10-29 06:48:47,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:47,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:48:47,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:47,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:47,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:47,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:48:47,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:47,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 06:48:47,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:47,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:47,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:48:47,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:47,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:48:47,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:47,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:48:47,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:47,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:47,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:47,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-29 06:48:47,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:47,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-29 06:48:47,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:47,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:47,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:48:47,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:47,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-29 06:48:47,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:48:47,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-29 06:48:47,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:47,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:47,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:47,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-29 06:48:47,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:47,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-10-29 06:48:47,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:47,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:47,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:48:47,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:48:47,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-29 06:48:47,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:47,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-10-29 06:48:47,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:47,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:48,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:48,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 06:48:48,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:48,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 06:48:48,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:48,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:48,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:48:48,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-29 06:48:48,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:48:48,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:48,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-10-29 06:48:48,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:48,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:48,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:48,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-29 06:48:48,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:48,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-29 06:48:48,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:48,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:48,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:48:48,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 119 [2020-10-29 06:48:48,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:48:48,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:48,406 INFO L134 CoverageAnalysis]: Checked inductivity of 863 backedges. 368 proven. 203 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2020-10-29 06:48:48,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1411619114] [2020-10-29 06:48:48,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:48:48,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:48:48,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613266878] [2020-10-29 06:48:48,407 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:48:48,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:48:48,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:48:48,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:48:48,408 INFO L87 Difference]: Start difference. First operand 27579 states and 31333 transitions. Second operand 7 states.