/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/Problem04_label55.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 05:16:23,868 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 05:16:23,872 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 05:16:23,920 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 05:16:23,921 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 05:16:23,930 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 05:16:23,932 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 05:16:23,937 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 05:16:23,941 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 05:16:23,948 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 05:16:23,950 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 05:16:23,952 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 05:16:23,952 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 05:16:23,956 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 05:16:23,959 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 05:16:23,962 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 05:16:23,963 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 05:16:23,967 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 05:16:23,992 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 05:16:23,999 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 05:16:24,003 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 05:16:24,005 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 05:16:24,010 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 05:16:24,012 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 05:16:24,019 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 05:16:24,020 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 05:16:24,020 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 05:16:24,023 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 05:16:24,023 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 05:16:24,026 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 05:16:24,026 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 05:16:24,027 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 05:16:24,029 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 05:16:24,030 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 05:16:24,031 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 05:16:24,032 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 05:16:24,032 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 05:16:24,033 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 05:16:24,033 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 05:16:24,034 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 05:16:24,035 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 05:16:24,043 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 05:16:24,101 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 05:16:24,102 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 05:16:24,107 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 05:16:24,107 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 05:16:24,107 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 05:16:24,107 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 05:16:24,108 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 05:16:24,108 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 05:16:24,108 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 05:16:24,108 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 05:16:24,109 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 05:16:24,110 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 05:16:24,110 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 05:16:24,110 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 05:16:24,110 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 05:16:24,111 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 05:16:24,111 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 05:16:24,111 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 05:16:24,111 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 05:16:24,111 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 05:16:24,112 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 05:16:24,112 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 05:16:24,112 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 05:16:24,112 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 05:16:24,113 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 05:16:24,113 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 05:16:24,113 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 05:16:24,113 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 05:16:24,113 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 05:16:24,114 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 05:16:24,627 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 05:16:24,668 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 05:16:24,671 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 05:16:24,673 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 05:16:24,674 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 05:16:24,675 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label55.c [2020-10-29 05:16:24,755 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6414c3ecb/140c7c2e3d5444488a635663a3b612bd/FLAGebc44f09f [2020-10-29 05:16:25,805 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 05:16:25,806 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label55.c [2020-10-29 05:16:25,842 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6414c3ecb/140c7c2e3d5444488a635663a3b612bd/FLAGebc44f09f [2020-10-29 05:16:26,301 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6414c3ecb/140c7c2e3d5444488a635663a3b612bd [2020-10-29 05:16:26,306 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 05:16:26,315 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 05:16:26,320 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 05:16:26,321 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 05:16:26,325 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 05:16:26,326 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:16:26" (1/1) ... [2020-10-29 05:16:26,330 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d444718 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:16:26, skipping insertion in model container [2020-10-29 05:16:26,330 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:16:26" (1/1) ... [2020-10-29 05:16:26,339 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 05:16:26,549 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 05:16:27,900 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:16:27,918 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 05:16:28,708 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:16:28,774 INFO L208 MainTranslator]: Completed translation [2020-10-29 05:16:28,775 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:16:28 WrapperNode [2020-10-29 05:16:28,775 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 05:16:28,777 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 05:16:28,778 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 05:16:28,778 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 05:16:28,793 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:16:28" (1/1) ... [2020-10-29 05:16:28,795 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:16:28" (1/1) ... [2020-10-29 05:16:28,885 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:16:28" (1/1) ... [2020-10-29 05:16:28,886 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:16:28" (1/1) ... [2020-10-29 05:16:28,993 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:16:28" (1/1) ... [2020-10-29 05:16:29,021 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:16:28" (1/1) ... [2020-10-29 05:16:29,053 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:16:28" (1/1) ... [2020-10-29 05:16:29,084 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 05:16:29,085 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 05:16:29,086 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 05:16:29,086 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 05:16:29,087 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:16:28" (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 05:16:29,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 05:16:29,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 05:16:29,161 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 05:16:29,161 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 05:16:29,162 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 05:16:29,162 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 05:16:29,162 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 05:16:29,162 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 05:16:29,162 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 05:16:29,162 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 05:16:29,163 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 05:16:29,163 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 05:16:29,163 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 05:16:29,163 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 05:16:29,163 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 05:16:29,163 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 05:16:29,164 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 05:16:29,164 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 05:16:29,164 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 05:16:29,164 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 05:16:29,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 05:16:29,164 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 05:16:29,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 05:16:29,164 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 05:16:29,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 05:16:34,678 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 05:16:34,679 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 05:16:34,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:16:34 BoogieIcfgContainer [2020-10-29 05:16:34,683 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 05:16:34,685 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 05:16:34,685 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 05:16:34,693 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 05:16:34,693 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:16:26" (1/3) ... [2020-10-29 05:16:34,694 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7568070b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:16:34, skipping insertion in model container [2020-10-29 05:16:34,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:16:28" (2/3) ... [2020-10-29 05:16:34,695 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7568070b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:16:34, skipping insertion in model container [2020-10-29 05:16:34,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:16:34" (3/3) ... [2020-10-29 05:16:34,697 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem04_label55.c [2020-10-29 05:16:34,709 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 05:16:34,723 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 05:16:34,737 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 05:16:34,773 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 05:16:34,774 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 05:16:34,774 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 05:16:34,774 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 05:16:34,774 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 05:16:34,774 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 05:16:34,774 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 05:16:34,774 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 05:16:34,810 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states. [2020-10-29 05:16:34,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 788 [2020-10-29 05:16:34,872 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:16:34,874 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:16:34,875 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:16:34,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:16:34,882 INFO L82 PathProgramCache]: Analyzing trace with hash -1513128040, now seen corresponding path program 1 times [2020-10-29 05:16:34,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:16:34,893 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [524381537] [2020-10-29 05:16:34,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:16:35,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:16:36,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:16:40,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:16:40,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 803 [2020-10-29 05:16:40,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:16:40,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5143 [2020-10-29 05:16:40,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:16:40,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:16:40,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 05:16:40,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:16:40,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 794 [2020-10-29 05:16:40,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 05:16:41,961 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:16:41,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:16:41,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:16:41,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:16:42,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:16:42,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:16:42,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:16:42,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-29 05:16:42,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:16:42,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:16:42,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:16:42,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:16:42,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:16:42,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:16:43,175 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 05:16:43,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [524381537] [2020-10-29 05:16:43,179 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 05:16:43,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 05:16:43,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54837597] [2020-10-29 05:16:43,192 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 05:16:43,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:16:43,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 05:16:43,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 05:16:43,215 INFO L87 Difference]: Start difference. First operand 910 states. Second operand 4 states. [2020-10-29 05:16:43,453 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-29 05:16:54,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:16:54,431 INFO L93 Difference]: Finished difference Result 2677 states and 5143 transitions. [2020-10-29 05:16:54,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:16:54,433 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 787 [2020-10-29 05:16:54,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:16:54,480 INFO L225 Difference]: With dead ends: 2677 [2020-10-29 05:16:54,480 INFO L226 Difference]: Without dead ends: 1703 [2020-10-29 05:16:54,492 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:16:54,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1703 states. [2020-10-29 05:16:54,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1703 to 1690. [2020-10-29 05:16:54,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1690 states. [2020-10-29 05:16:54,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1690 states to 1690 states and 3006 transitions. [2020-10-29 05:16:54,675 INFO L78 Accepts]: Start accepts. Automaton has 1690 states and 3006 transitions. Word has length 787 [2020-10-29 05:16:54,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:16:54,678 INFO L481 AbstractCegarLoop]: Abstraction has 1690 states and 3006 transitions. [2020-10-29 05:16:54,678 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 05:16:54,678 INFO L276 IsEmpty]: Start isEmpty. Operand 1690 states and 3006 transitions. [2020-10-29 05:16:54,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 796 [2020-10-29 05:16:54,710 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:16:54,711 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:16:54,712 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 05:16:54,712 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:16:54,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:16:54,713 INFO L82 PathProgramCache]: Analyzing trace with hash -950410122, now seen corresponding path program 1 times [2020-10-29 05:16:54,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:16:54,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [400391384] [2020-10-29 05:16:54,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:16:54,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:16:54,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:16:56,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:16:57,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:16:59,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:16:59,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 813 [2020-10-29 05:16:59,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:16:59,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5083 [2020-10-29 05:16:59,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:16:59,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:16:59,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 05:16:59,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-29 05:16:59,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 791 [2020-10-29 05:16:59,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 05:17:00,517 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:17:00,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:17:00,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:17:00,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:17:00,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:17:00,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:17:00,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:17:00,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 05:17:00,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:17:00,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:17:00,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:17:00,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:17:00,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:17:00,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:17:00,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:17:00,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:17:00,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:17:00,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:17:00,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 05:17:00,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:17:00,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 05:17:00,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:17:00,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:17:00,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:17:00,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:17:00,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-29 05:17:00,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:17:01,366 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:17:01,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [400391384] [2020-10-29 05:17:01,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:17:01,368 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:17:01,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789898994] [2020-10-29 05:17:01,371 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:17:01,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:17:01,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:17:01,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:17:01,372 INFO L87 Difference]: Start difference. First operand 1690 states and 3006 transitions. Second operand 5 states. [2020-10-29 05:17:01,618 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-29 05:17:15,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:17:15,025 INFO L93 Difference]: Finished difference Result 5081 states and 9104 transitions. [2020-10-29 05:17:15,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:17:15,026 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 795 [2020-10-29 05:17:15,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:17:15,050 INFO L225 Difference]: With dead ends: 5081 [2020-10-29 05:17:15,051 INFO L226 Difference]: Without dead ends: 3397 [2020-10-29 05:17:15,056 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:17:15,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3397 states. [2020-10-29 05:17:15,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3397 to 3380. [2020-10-29 05:17:15,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3380 states. [2020-10-29 05:17:15,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3380 states to 3380 states and 5630 transitions. [2020-10-29 05:17:15,186 INFO L78 Accepts]: Start accepts. Automaton has 3380 states and 5630 transitions. Word has length 795 [2020-10-29 05:17:15,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:17:15,188 INFO L481 AbstractCegarLoop]: Abstraction has 3380 states and 5630 transitions. [2020-10-29 05:17:15,188 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:17:15,188 INFO L276 IsEmpty]: Start isEmpty. Operand 3380 states and 5630 transitions. [2020-10-29 05:17:15,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 861 [2020-10-29 05:17:15,205 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:17:15,206 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:17:15,206 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 05:17:15,206 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:17:15,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:17:15,210 INFO L82 PathProgramCache]: Analyzing trace with hash -786975917, now seen corresponding path program 1 times [2020-10-29 05:17:15,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:17:15,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [308981551] [2020-10-29 05:17:15,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:17:15,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:17:15,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:17:16,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:17:20,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:17:20,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 878 [2020-10-29 05:17:20,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:17:20,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5125 [2020-10-29 05:17:20,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:17:20,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:17:20,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 05:17:20,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:17:20,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 869 [2020-10-29 05:17:20,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:17:20,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:17:20,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:17:20,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:17:20,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:17:20,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:17:20,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:17:20,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 05:17:20,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:17:20,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:17:20,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:17:20,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:17:20,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:17:20,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:17:20,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:17:21,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:17:21,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:17:21,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:17:21,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:17:21,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 05:17:21,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:17:21,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-29 05:17:21,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:17:21,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:17:21,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:17:21,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:17:21,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-29 05:17:21,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:17:22,061 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 66 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 05:17:22,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [308981551] [2020-10-29 05:17:22,061 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:17:22,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:17:22,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525624456] [2020-10-29 05:17:22,063 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:17:22,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:17:22,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:17:22,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:17:22,065 INFO L87 Difference]: Start difference. First operand 3380 states and 5630 transitions. Second operand 5 states. [2020-10-29 05:17:32,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:17:32,740 INFO L93 Difference]: Finished difference Result 8476 states and 14418 transitions. [2020-10-29 05:17:32,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:17:32,741 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 860 [2020-10-29 05:17:32,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:17:32,773 INFO L225 Difference]: With dead ends: 8476 [2020-10-29 05:17:32,773 INFO L226 Difference]: Without dead ends: 5102 [2020-10-29 05:17:32,782 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:17:32,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5102 states. [2020-10-29 05:17:32,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5102 to 5098. [2020-10-29 05:17:32,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5098 states. [2020-10-29 05:17:32,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5098 states to 5098 states and 8307 transitions. [2020-10-29 05:17:32,930 INFO L78 Accepts]: Start accepts. Automaton has 5098 states and 8307 transitions. Word has length 860 [2020-10-29 05:17:32,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:17:32,932 INFO L481 AbstractCegarLoop]: Abstraction has 5098 states and 8307 transitions. [2020-10-29 05:17:32,932 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:17:32,932 INFO L276 IsEmpty]: Start isEmpty. Operand 5098 states and 8307 transitions. [2020-10-29 05:17:32,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 866 [2020-10-29 05:17:32,954 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:17:32,955 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:17:32,955 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 05:17:32,955 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:17:32,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:17:32,956 INFO L82 PathProgramCache]: Analyzing trace with hash 280796130, now seen corresponding path program 1 times [2020-10-29 05:17:32,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:17:32,957 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2048532212] [2020-10-29 05:17:32,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:17:33,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:17:33,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:17:34,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:17:36,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:17:38,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:17:38,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 883 [2020-10-29 05:17:38,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:17:38,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-29 05:17:38,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:17:38,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:17:38,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 05:17:38,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-29 05:17:38,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 791 [2020-10-29 05:17:38,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:17:38,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:17:38,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:17:38,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:17:38,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:17:38,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:17:38,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:17:38,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 05:17:38,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:17:38,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:17:38,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:17:38,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:17:38,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:17:38,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 05:17:38,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:17:38,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:17:38,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:17:38,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:17:38,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 05:17:38,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:17:38,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-29 05:17:38,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:17:38,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:17:38,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:17:38,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:17:38,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-29 05:17:38,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:17:39,575 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 74 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:17:39,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2048532212] [2020-10-29 05:17:39,576 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:17:39,576 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:17:39,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598751892] [2020-10-29 05:17:39,578 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:17:39,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:17:39,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:17:39,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:17:39,579 INFO L87 Difference]: Start difference. First operand 5098 states and 8307 transitions. Second operand 5 states. [2020-10-29 05:17:39,999 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-29 05:17:53,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:17:53,139 INFO L93 Difference]: Finished difference Result 15263 states and 25321 transitions. [2020-10-29 05:17:53,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:17:53,142 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 865 [2020-10-29 05:17:53,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:17:53,192 INFO L225 Difference]: With dead ends: 15263 [2020-10-29 05:17:53,192 INFO L226 Difference]: Without dead ends: 10171 [2020-10-29 05:17:53,206 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:17:53,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10171 states. [2020-10-29 05:17:53,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10171 to 10167. [2020-10-29 05:17:53,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10167 states. [2020-10-29 05:17:53,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10167 states to 10167 states and 14975 transitions. [2020-10-29 05:17:53,510 INFO L78 Accepts]: Start accepts. Automaton has 10167 states and 14975 transitions. Word has length 865 [2020-10-29 05:17:53,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:17:53,512 INFO L481 AbstractCegarLoop]: Abstraction has 10167 states and 14975 transitions. [2020-10-29 05:17:53,512 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:17:53,512 INFO L276 IsEmpty]: Start isEmpty. Operand 10167 states and 14975 transitions. [2020-10-29 05:17:53,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 868 [2020-10-29 05:17:53,550 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:17:53,551 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:17:53,551 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 05:17:53,551 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:17:53,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:17:53,552 INFO L82 PathProgramCache]: Analyzing trace with hash 1956304774, now seen corresponding path program 1 times [2020-10-29 05:17:53,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:17:53,553 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [684924807] [2020-10-29 05:17:53,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:17:53,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:17:53,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:17:54,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:17:58,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:17:58,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 885 [2020-10-29 05:17:58,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:17:58,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5083 [2020-10-29 05:17:58,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:17:58,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:17:58,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 05:17:58,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-29 05:17:58,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 670 [2020-10-29 05:17:58,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:18:01,398 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2020-10-29 05:18:01,516 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 41 [2020-10-29 05:18:01,675 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 41 [2020-10-29 05:18:01,878 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2020-10-29 05:18:02,171 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 53 [2020-10-29 05:18:02,382 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 49 [2020-10-29 05:18:02,563 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 48 [2020-10-29 05:18:02,759 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 48 [2020-10-29 05:18:03,025 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 48 [2020-10-29 05:18:03,306 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 47 [2020-10-29 05:18:03,562 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 44 [2020-10-29 05:18:03,792 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 39 [2020-10-29 05:18:03,927 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:18:03,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:18:03,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:18:03,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:18:03,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:18:03,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:18:03,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:18:03,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 05:18:03,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:18:03,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:18:03,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:18:03,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:18:03,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:18:03,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:18:03,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:18:04,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:18:04,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:18:04,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:18:04,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 05:18:04,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:18:04,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-29 05:18:04,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:18:04,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:18:04,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:18:04,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:18:04,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 05:18:04,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:18:11,855 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 76 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:18:11,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [684924807] [2020-10-29 05:18:11,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:18:11,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 05:18:11,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143743638] [2020-10-29 05:18:11,857 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 05:18:11,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:18:11,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 05:18:11,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2020-10-29 05:18:11,858 INFO L87 Difference]: Start difference. First operand 10167 states and 14975 transitions. Second operand 17 states. [2020-10-29 05:18:14,116 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-29 05:18:14,394 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-29 05:18:23,747 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-29 05:18:24,088 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-29 05:18:30,283 WARN L193 SmtUtils]: Spent 552.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 152 [2020-10-29 05:18:31,992 WARN L193 SmtUtils]: Spent 519.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 150 [2020-10-29 05:18:34,488 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-29 05:18:34,831 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-29 05:18:35,694 WARN L193 SmtUtils]: Spent 571.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 139 [2020-10-29 05:18:42,109 WARN L193 SmtUtils]: Spent 534.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 136 [2020-10-29 05:18:43,099 WARN L193 SmtUtils]: Spent 548.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 131 [2020-10-29 05:18:47,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:18:47,323 INFO L93 Difference]: Finished difference Result 20995 states and 31338 transitions. [2020-10-29 05:18:47,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 05:18:47,324 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 867 [2020-10-29 05:18:47,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:18:47,367 INFO L225 Difference]: With dead ends: 20995 [2020-10-29 05:18:47,368 INFO L226 Difference]: Without dead ends: 10834 [2020-10-29 05:18:47,392 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=147, Invalid=609, Unknown=0, NotChecked=0, Total=756 [2020-10-29 05:18:47,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10834 states. [2020-10-29 05:18:47,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10834 to 10830. [2020-10-29 05:18:47,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10830 states. [2020-10-29 05:18:47,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10830 states to 10830 states and 15654 transitions. [2020-10-29 05:18:47,688 INFO L78 Accepts]: Start accepts. Automaton has 10830 states and 15654 transitions. Word has length 867 [2020-10-29 05:18:47,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:18:47,690 INFO L481 AbstractCegarLoop]: Abstraction has 10830 states and 15654 transitions. [2020-10-29 05:18:47,690 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 05:18:47,690 INFO L276 IsEmpty]: Start isEmpty. Operand 10830 states and 15654 transitions. [2020-10-29 05:18:47,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 979 [2020-10-29 05:18:47,737 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:18:47,739 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:18:47,739 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 05:18:47,739 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:18:47,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:18:47,740 INFO L82 PathProgramCache]: Analyzing trace with hash -732074017, now seen corresponding path program 1 times [2020-10-29 05:18:47,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:18:47,742 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1389846467] [2020-10-29 05:18:47,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:18:47,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:18:47,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:18:48,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:18:53,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:18:53,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 996 [2020-10-29 05:18:53,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:18:53,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5161 [2020-10-29 05:18:53,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:18:53,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:18:53,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 05:18:53,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 201 [2020-10-29 05:18:53,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 657 [2020-10-29 05:18:53,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:18:54,162 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-10-29 05:18:54,277 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-10-29 05:18:54,397 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-10-29 05:18:55,328 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:18:55,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:18:55,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:18:55,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:18:55,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:18:55,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:18:55,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:18:55,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 05:18:55,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:18:55,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:18:55,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:18:55,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:18:55,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:18:55,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:18:55,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:18:55,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:18:55,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:18:55,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:18:55,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-29 05:18:55,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:18:55,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-29 05:18:55,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:18:55,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:18:55,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:18:55,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:18:55,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-10-29 05:18:55,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:19:01,437 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 187 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:19:01,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1389846467] [2020-10-29 05:19:01,438 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:19:01,438 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 05:19:01,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157118245] [2020-10-29 05:19:01,440 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 05:19:01,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:19:01,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 05:19:01,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2020-10-29 05:19:01,441 INFO L87 Difference]: Start difference. First operand 10830 states and 15654 transitions. Second operand 17 states. [2020-10-29 05:19:04,062 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-29 05:19:04,317 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-29 05:19:08,528 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2020-10-29 05:19:10,735 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-29 05:19:10,969 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-29 05:19:16,981 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-29 05:19:17,945 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-29 05:19:18,193 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-29 05:19:19,959 WARN L193 SmtUtils]: Spent 414.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 120 [2020-10-29 05:19:22,597 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 119 [2020-10-29 05:19:24,476 WARN L193 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 117 [2020-10-29 05:19:24,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:19:24,743 INFO L93 Difference]: Finished difference Result 22308 states and 32672 transitions. [2020-10-29 05:19:24,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 05:19:24,744 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 978 [2020-10-29 05:19:24,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:19:24,781 INFO L225 Difference]: With dead ends: 22308 [2020-10-29 05:19:24,781 INFO L226 Difference]: Without dead ends: 11484 [2020-10-29 05:19:24,804 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=144, Invalid=612, Unknown=0, NotChecked=0, Total=756 [2020-10-29 05:19:24,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11484 states. [2020-10-29 05:19:25,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11484 to 11480. [2020-10-29 05:19:25,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11480 states. [2020-10-29 05:19:25,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11480 states to 11480 states and 16320 transitions. [2020-10-29 05:19:25,051 INFO L78 Accepts]: Start accepts. Automaton has 11480 states and 16320 transitions. Word has length 978 [2020-10-29 05:19:25,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:19:25,053 INFO L481 AbstractCegarLoop]: Abstraction has 11480 states and 16320 transitions. [2020-10-29 05:19:25,053 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 05:19:25,053 INFO L276 IsEmpty]: Start isEmpty. Operand 11480 states and 16320 transitions. [2020-10-29 05:19:25,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1085 [2020-10-29 05:19:25,097 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:19:25,098 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:19:25,099 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 05:19:25,099 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:19:25,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:19:25,100 INFO L82 PathProgramCache]: Analyzing trace with hash 1292156257, now seen corresponding path program 1 times [2020-10-29 05:19:25,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:19:25,100 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [585977950] [2020-10-29 05:19:25,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:19:25,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:19:25,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:19:25,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:19:29,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:19:30,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:19:30,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:19:30,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1104 [2020-10-29 05:19:30,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 05:19:30,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-29 05:19:30,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:19:30,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:19:30,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 05:19:30,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 309 [2020-10-29 05:19:30,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 791 [2020-10-29 05:19:30,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:19:30,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:19:30,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:19:30,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:19:30,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:19:30,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:19:30,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:19:30,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 05:19:30,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:19:30,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:19:30,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:19:30,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:19:30,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:19:30,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:19:30,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:19:30,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:19:30,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:19:30,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:19:30,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 05:19:30,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:19:30,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 05:19:30,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:19:30,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:19:30,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:19:30,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:19:30,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:19:30,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:19:30,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-29 05:19:30,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:19:30,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:19:30,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:19:30,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-10-29 05:19:30,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:19:30,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-29 05:19:30,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:19:30,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:19:30,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:19:30,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:19:30,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 219 [2020-10-29 05:19:30,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:19:32,170 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 292 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-10-29 05:19:32,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [585977950] [2020-10-29 05:19:32,170 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:19:32,170 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:19:32,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557866257] [2020-10-29 05:19:32,172 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:19:32,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:19:32,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:19:32,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:19:32,173 INFO L87 Difference]: Start difference. First operand 11480 states and 16320 transitions. Second operand 5 states. [2020-10-29 05:19:32,389 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-29 05:19:46,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:19:46,266 INFO L93 Difference]: Finished difference Result 33068 states and 48630 transitions. [2020-10-29 05:19:46,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:19:46,268 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1084 [2020-10-29 05:19:46,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:19:46,347 INFO L225 Difference]: With dead ends: 33068 [2020-10-29 05:19:46,347 INFO L226 Difference]: Without dead ends: 21594 [2020-10-29 05:19:46,375 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:19:46,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21594 states. [2020-10-29 05:19:46,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21594 to 21590. [2020-10-29 05:19:46,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21590 states. [2020-10-29 05:19:46,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21590 states to 21590 states and 29929 transitions. [2020-10-29 05:19:46,924 INFO L78 Accepts]: Start accepts. Automaton has 21590 states and 29929 transitions. Word has length 1084 [2020-10-29 05:19:46,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:19:46,926 INFO L481 AbstractCegarLoop]: Abstraction has 21590 states and 29929 transitions. [2020-10-29 05:19:46,926 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:19:46,926 INFO L276 IsEmpty]: Start isEmpty. Operand 21590 states and 29929 transitions. [2020-10-29 05:19:47,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1085 [2020-10-29 05:19:47,002 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:19:47,003 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:19:47,003 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 05:19:47,003 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:19:47,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:19:47,004 INFO L82 PathProgramCache]: Analyzing trace with hash -2006141385, now seen corresponding path program 1 times [2020-10-29 05:19:47,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:19:47,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1805812731] [2020-10-29 05:19:47,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:19:47,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:19:47,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:19:48,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:19:51,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:19:52,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:19:52,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1104 [2020-10-29 05:19:52,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:19:52,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5161 [2020-10-29 05:19:52,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:19:52,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:19:52,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 05:19:52,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 306 [2020-10-29 05:19:52,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 783 [2020-10-29 05:19:52,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:19:53,139 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:19:53,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:19:53,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:19:53,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:19:53,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:19:53,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:19:53,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:19:53,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 05:19:53,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:19:53,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:19:53,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:19:53,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:19:53,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:19:53,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:19:53,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:19:53,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:19:53,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:19:53,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:19:53,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 300 [2020-10-29 05:19:53,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:19:53,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-10-29 05:19:53,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:19:53,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:19:53,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:19:53,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:19:53,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 291 [2020-10-29 05:19:53,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:19:53,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-29 05:19:53,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:19:53,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:19:53,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:19:53,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 05:19:53,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:19:53,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-29 05:19:53,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:19:53,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:19:53,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:19:53,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:19:53,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-29 05:19:53,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:19:58,531 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 289 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:19:58,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1805812731] [2020-10-29 05:19:58,532 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:19:58,532 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:19:58,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374829847] [2020-10-29 05:19:58,533 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:19:58,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:19:58,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:19:58,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:19:58,534 INFO L87 Difference]: Start difference. First operand 21590 states and 29929 transitions. Second operand 5 states.