/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 05:05:09,710 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 05:05:09,713 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 05:05:09,752 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 05:05:09,753 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 05:05:09,755 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 05:05:09,756 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 05:05:09,759 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 05:05:09,762 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 05:05:09,763 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 05:05:09,765 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 05:05:09,767 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 05:05:09,767 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 05:05:09,769 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 05:05:09,770 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 05:05:09,772 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 05:05:09,774 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 05:05:09,775 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 05:05:09,777 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 05:05:09,780 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 05:05:09,783 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 05:05:09,785 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 05:05:09,787 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 05:05:09,788 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 05:05:09,819 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 05:05:09,819 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 05:05:09,820 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 05:05:09,822 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 05:05:09,823 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 05:05:09,824 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 05:05:09,825 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 05:05:09,826 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 05:05:09,827 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 05:05:09,828 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 05:05:09,829 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 05:05:09,830 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 05:05:09,831 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 05:05:09,831 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 05:05:09,831 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 05:05:09,833 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 05:05:09,833 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 05:05:09,835 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 [2020-10-27 05:05:09,866 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 05:05:09,866 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 05:05:09,868 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 05:05:09,868 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 05:05:09,869 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 05:05:09,869 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 05:05:09,869 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 05:05:09,870 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 05:05:09,870 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 05:05:09,870 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 05:05:09,871 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 05:05:09,871 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 05:05:09,871 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 05:05:09,871 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 05:05:09,872 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 05:05:09,872 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 05:05:09,872 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 05:05:09,873 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 05:05:09,873 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 05:05:09,873 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 05:05:09,873 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 05:05:09,874 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 05:05:09,874 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 05:05:09,874 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 05:05:09,875 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 05:05:09,875 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 05:05:09,875 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 05:05:09,876 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 05:05:09,876 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 05:05:09,876 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 05:05:10,269 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 05:05:10,319 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 05:05:10,324 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 05:05:10,326 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 05:05:10,326 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 05:05:10,329 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-27 05:05:10,408 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d9b51ce35/24cb70c32a5246fbbe41cc3a91fca125/FLAGd3aa622ec [2020-10-27 05:05:11,257 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 05:05:11,258 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-27 05:05:11,280 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d9b51ce35/24cb70c32a5246fbbe41cc3a91fca125/FLAGd3aa622ec [2020-10-27 05:05:11,402 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d9b51ce35/24cb70c32a5246fbbe41cc3a91fca125 [2020-10-27 05:05:11,405 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 05:05:11,416 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 05:05:11,418 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 05:05:11,419 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 05:05:11,423 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 05:05:11,424 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:05:11" (1/1) ... [2020-10-27 05:05:11,429 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a892d5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:05:11, skipping insertion in model container [2020-10-27 05:05:11,430 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:05:11" (1/1) ... [2020-10-27 05:05:11,438 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 05:05:11,596 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 05:05:13,135 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:05:13,153 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 05:05:13,836 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:05:13,863 INFO L208 MainTranslator]: Completed translation [2020-10-27 05:05:13,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:05:13 WrapperNode [2020-10-27 05:05:13,864 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 05:05:13,865 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 05:05:13,865 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 05:05:13,865 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 05:05:13,879 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:05:13" (1/1) ... [2020-10-27 05:05:13,879 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:05:13" (1/1) ... [2020-10-27 05:05:13,910 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:05:13" (1/1) ... [2020-10-27 05:05:13,911 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:05:13" (1/1) ... [2020-10-27 05:05:13,995 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:05:13" (1/1) ... [2020-10-27 05:05:14,033 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:05:13" (1/1) ... [2020-10-27 05:05:14,044 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:05:13" (1/1) ... [2020-10-27 05:05:14,064 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 05:05:14,065 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 05:05:14,065 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 05:05:14,065 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 05:05:14,066 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:05:13" (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 [2020-10-27 05:05:14,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 05:05:14,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 05:05:14,156 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 05:05:14,157 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 05:05:14,157 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 05:05:14,157 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 05:05:14,157 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 05:05:14,157 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 05:05:14,158 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 05:05:14,158 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 05:05:14,158 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-27 05:05:14,158 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 05:05:14,158 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 05:05:14,159 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 05:05:14,159 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 05:05:14,159 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 05:05:14,159 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 05:05:14,159 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 05:05:14,159 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 05:05:14,160 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 05:05:14,160 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 05:05:14,160 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 05:05:14,160 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 05:05:14,160 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 05:05:14,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 05:05:14,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 05:05:14,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 05:05:14,161 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 05:05:14,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 05:05:17,718 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 05:05:17,719 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 05:05:17,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:05:17 BoogieIcfgContainer [2020-10-27 05:05:17,724 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 05:05:17,728 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 05:05:17,728 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 05:05:17,733 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 05:05:17,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:05:11" (1/3) ... [2020-10-27 05:05:17,734 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ffe9636 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:05:17, skipping insertion in model container [2020-10-27 05:05:17,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:05:13" (2/3) ... [2020-10-27 05:05:17,735 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ffe9636 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:05:17, skipping insertion in model container [2020-10-27 05:05:17,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:05:17" (3/3) ... [2020-10-27 05:05:17,736 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-27 05:05:17,750 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 05:05:17,757 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 05:05:17,771 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 05:05:17,820 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 05:05:17,821 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 05:05:17,821 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 05:05:17,821 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 05:05:17,821 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 05:05:17,821 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 05:05:17,822 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 05:05:17,822 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 05:05:17,896 INFO L276 IsEmpty]: Start isEmpty. Operand 938 states. [2020-10-27 05:05:17,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2020-10-27 05:05:17,939 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:05:17,942 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] [2020-10-27 05:05:17,943 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:05:17,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:05:17,949 INFO L82 PathProgramCache]: Analyzing trace with hash -1915501587, now seen corresponding path program 1 times [2020-10-27 05:05:17,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:05:17,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [50780350] [2020-10-27 05:05:17,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:05:18,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:05:18,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:19,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:19,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:20,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:20,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:20,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:21,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:21,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:21,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:21,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:22,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:22,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:22,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:23,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:23,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:23,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:23,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:05:23,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-10-27 05:05:23,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 05:05:23,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5118 [2020-10-27 05:05:23,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:05:23,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:05:23,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:05:23,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-27 05:05:23,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 05:05:24,783 WARN L193 SmtUtils]: Spent 656.00 ms on a formula simplification that was a NOOP. DAG size: 340 [2020-10-27 05:05:24,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:05:24,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:05:24,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:24,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:05:24,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:05:24,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:05:24,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 05:05:24,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:05:24,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:05:24,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:05:24,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:05:24,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:05:25,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:05:25,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [50780350] [2020-10-27 05:05:25,078 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:05:25,078 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:05:25,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242449527] [2020-10-27 05:05:25,085 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:05:25,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:05:25,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:05:25,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:05:25,104 INFO L87 Difference]: Start difference. First operand 938 states. Second operand 5 states. [2020-10-27 05:05:37,074 WARN L193 SmtUtils]: Spent 817.00 ms on a formula simplification that was a NOOP. DAG size: 346 [2020-10-27 05:05:39,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:05:39,948 INFO L93 Difference]: Finished difference Result 2701 states and 4922 transitions. [2020-10-27 05:05:39,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 05:05:39,950 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 309 [2020-10-27 05:05:39,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:05:39,987 INFO L225 Difference]: With dead ends: 2701 [2020-10-27 05:05:39,987 INFO L226 Difference]: Without dead ends: 1806 [2020-10-27 05:05:39,996 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:05:40,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1806 states. [2020-10-27 05:05:40,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1806 to 1720. [2020-10-27 05:05:40,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1720 states. [2020-10-27 05:05:40,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1720 states to 1720 states and 2633 transitions. [2020-10-27 05:05:40,224 INFO L78 Accepts]: Start accepts. Automaton has 1720 states and 2633 transitions. Word has length 309 [2020-10-27 05:05:40,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:05:40,227 INFO L481 AbstractCegarLoop]: Abstraction has 1720 states and 2633 transitions. [2020-10-27 05:05:40,227 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:05:40,227 INFO L276 IsEmpty]: Start isEmpty. Operand 1720 states and 2633 transitions. [2020-10-27 05:05:40,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2020-10-27 05:05:40,240 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:05:40,244 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] [2020-10-27 05:05:40,244 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 05:05:40,244 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:05:40,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:05:40,245 INFO L82 PathProgramCache]: Analyzing trace with hash -1423949093, now seen corresponding path program 1 times [2020-10-27 05:05:40,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:05:40,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1540990753] [2020-10-27 05:05:40,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:05:40,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:05:40,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:40,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:40,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:41,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:41,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:41,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:41,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:42,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:42,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:42,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:42,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:42,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:43,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:43,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:43,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:45,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:05:45,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 319 [2020-10-27 05:05:45,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 05:05:45,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-27 05:05:45,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:05:45,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:05:45,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:05:45,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-27 05:05:45,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:05:46,431 WARN L193 SmtUtils]: Spent 834.00 ms on a formula simplification that was a NOOP. DAG size: 340 [2020-10-27 05:05:46,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:05:46,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:05:46,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:46,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:05:46,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:05:46,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:05:46,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 05:05:46,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:05:46,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:05:46,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:05:46,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:05:46,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:05:46,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:05:46,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1540990753] [2020-10-27 05:05:46,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:05:46,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:05:46,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373483282] [2020-10-27 05:05:46,716 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:05:46,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:05:46,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:05:46,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:05:46,727 INFO L87 Difference]: Start difference. First operand 1720 states and 2633 transitions. Second operand 5 states. [2020-10-27 05:05:55,912 WARN L193 SmtUtils]: Spent 892.00 ms on a formula simplification that was a NOOP. DAG size: 346 [2020-10-27 05:05:58,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:05:58,356 INFO L93 Difference]: Finished difference Result 5079 states and 7768 transitions. [2020-10-27 05:05:58,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:05:58,357 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 311 [2020-10-27 05:05:58,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:05:58,378 INFO L225 Difference]: With dead ends: 5079 [2020-10-27 05:05:58,378 INFO L226 Difference]: Without dead ends: 3375 [2020-10-27 05:05:58,383 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:05:58,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3375 states. [2020-10-27 05:05:58,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3375 to 3293. [2020-10-27 05:05:58,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3293 states. [2020-10-27 05:05:58,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3293 states to 3293 states and 5013 transitions. [2020-10-27 05:05:58,574 INFO L78 Accepts]: Start accepts. Automaton has 3293 states and 5013 transitions. Word has length 311 [2020-10-27 05:05:58,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:05:58,577 INFO L481 AbstractCegarLoop]: Abstraction has 3293 states and 5013 transitions. [2020-10-27 05:05:58,577 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:05:58,577 INFO L276 IsEmpty]: Start isEmpty. Operand 3293 states and 5013 transitions. [2020-10-27 05:05:58,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2020-10-27 05:05:58,589 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:05:58,589 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] [2020-10-27 05:05:58,589 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 05:05:58,590 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:05:58,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:05:58,591 INFO L82 PathProgramCache]: Analyzing trace with hash 195390178, now seen corresponding path program 1 times [2020-10-27 05:05:58,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:05:58,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [260639264] [2020-10-27 05:05:58,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:05:58,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:05:58,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:58,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:58,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:59,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:59,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:59,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:59,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:59,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:00,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:00,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:00,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:00,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:00,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:01,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:03,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:06:03,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 321 [2020-10-27 05:06:03,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 05:06:03,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-27 05:06:03,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:06:03,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:06:03,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:06:03,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-27 05:06:03,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:06:04,656 WARN L193 SmtUtils]: Spent 794.00 ms on a formula simplification that was a NOOP. DAG size: 340 [2020-10-27 05:06:04,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:06:04,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:06:04,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:04,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:06:04,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:06:04,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:06:04,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 05:06:04,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:06:04,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:06:04,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:06:04,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:06:04,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:06:04,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:06:04,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [260639264] [2020-10-27 05:06:04,904 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:06:04,905 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:06:04,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434944127] [2020-10-27 05:06:04,908 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:06:04,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:06:04,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:06:04,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:06:04,914 INFO L87 Difference]: Start difference. First operand 3293 states and 5013 transitions. Second operand 5 states. [2020-10-27 05:06:13,996 WARN L193 SmtUtils]: Spent 889.00 ms on a formula simplification that was a NOOP. DAG size: 346 [2020-10-27 05:06:16,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:06:16,405 INFO L93 Difference]: Finished difference Result 9621 states and 14596 transitions. [2020-10-27 05:06:16,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:06:16,406 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 313 [2020-10-27 05:06:16,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:06:16,438 INFO L225 Difference]: With dead ends: 9621 [2020-10-27 05:06:16,438 INFO L226 Difference]: Without dead ends: 6410 [2020-10-27 05:06:16,446 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:06:16,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6410 states. [2020-10-27 05:06:16,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6410 to 6358. [2020-10-27 05:06:16,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6358 states. [2020-10-27 05:06:16,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6358 states to 6358 states and 9591 transitions. [2020-10-27 05:06:16,811 INFO L78 Accepts]: Start accepts. Automaton has 6358 states and 9591 transitions. Word has length 313 [2020-10-27 05:06:16,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:06:16,811 INFO L481 AbstractCegarLoop]: Abstraction has 6358 states and 9591 transitions. [2020-10-27 05:06:16,811 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:06:16,812 INFO L276 IsEmpty]: Start isEmpty. Operand 6358 states and 9591 transitions. [2020-10-27 05:06:16,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2020-10-27 05:06:16,827 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:06:16,828 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] [2020-10-27 05:06:16,828 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 05:06:16,828 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:06:16,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:06:16,829 INFO L82 PathProgramCache]: Analyzing trace with hash -11497601, now seen corresponding path program 1 times [2020-10-27 05:06:16,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:06:16,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [994683980] [2020-10-27 05:06:16,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:06:16,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:06:16,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:16,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:17,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:17,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:17,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:17,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:17,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:17,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:17,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:17,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:18,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:18,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:19,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:21,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:21,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:06:21,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 323 [2020-10-27 05:06:21,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 05:06:21,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5080 [2020-10-27 05:06:21,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:06:21,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:06:21,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:06:21,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-27 05:06:21,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:06:23,079 WARN L193 SmtUtils]: Spent 880.00 ms on a formula simplification that was a NOOP. DAG size: 340 [2020-10-27 05:06:23,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:06:23,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:06:23,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:23,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:06:23,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:06:23,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:06:23,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 05:06:23,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:06:23,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:06:23,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:06:23,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:06:23,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:06:23,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:06:23,261 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [994683980] [2020-10-27 05:06:23,261 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:06:23,261 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:06:23,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354948047] [2020-10-27 05:06:23,262 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:06:23,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:06:23,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:06:23,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:06:23,263 INFO L87 Difference]: Start difference. First operand 6358 states and 9591 transitions. Second operand 5 states. [2020-10-27 05:06:32,558 WARN L193 SmtUtils]: Spent 943.00 ms on a formula simplification that was a NOOP. DAG size: 346 [2020-10-27 05:06:34,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:06:34,953 INFO L93 Difference]: Finished difference Result 18596 states and 27974 transitions. [2020-10-27 05:06:34,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:06:34,954 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 315 [2020-10-27 05:06:34,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:06:35,006 INFO L225 Difference]: With dead ends: 18596 [2020-10-27 05:06:35,006 INFO L226 Difference]: Without dead ends: 12410 [2020-10-27 05:06:35,021 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:06:35,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12410 states. [2020-10-27 05:06:35,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12410 to 12288. [2020-10-27 05:06:35,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12288 states. [2020-10-27 05:06:35,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12288 states to 12288 states and 18384 transitions. [2020-10-27 05:06:35,799 INFO L78 Accepts]: Start accepts. Automaton has 12288 states and 18384 transitions. Word has length 315 [2020-10-27 05:06:35,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:06:35,800 INFO L481 AbstractCegarLoop]: Abstraction has 12288 states and 18384 transitions. [2020-10-27 05:06:35,800 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:06:35,800 INFO L276 IsEmpty]: Start isEmpty. Operand 12288 states and 18384 transitions. [2020-10-27 05:06:35,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2020-10-27 05:06:35,828 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:06:35,828 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] [2020-10-27 05:06:35,829 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 05:06:35,829 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:06:35,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:06:35,830 INFO L82 PathProgramCache]: Analyzing trace with hash 1666633407, now seen corresponding path program 1 times [2020-10-27 05:06:35,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:06:35,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [77335701] [2020-10-27 05:06:35,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:06:35,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:06:35,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:35,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:36,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:36,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:36,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:36,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:36,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:36,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:37,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:37,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:37,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:37,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:38,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:38,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:38,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:40,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:40,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:40,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:40,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:40,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:06:40,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 325 [2020-10-27 05:06:40,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-27 05:06:40,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-27 05:06:40,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:06:40,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:06:40,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:06:40,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-27 05:06:40,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:06:41,858 WARN L193 SmtUtils]: Spent 796.00 ms on a formula simplification that was a NOOP. DAG size: 340 [2020-10-27 05:06:41,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:06:41,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:06:41,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:41,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:06:41,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:06:41,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:06:41,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 05:06:41,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:06:41,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:06:41,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:06:41,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:06:41,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:06:42,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:06:42,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [77335701] [2020-10-27 05:06:42,045 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:06:42,045 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:06:42,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416890890] [2020-10-27 05:06:42,046 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:06:42,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:06:42,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:06:42,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:06:42,047 INFO L87 Difference]: Start difference. First operand 12288 states and 18384 transitions. Second operand 5 states. [2020-10-27 05:06:51,532 WARN L193 SmtUtils]: Spent 907.00 ms on a formula simplification that was a NOOP. DAG size: 346 [2020-10-27 05:06:54,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:06:54,311 INFO L93 Difference]: Finished difference Result 35999 states and 53694 transitions. [2020-10-27 05:06:54,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:06:54,312 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 317 [2020-10-27 05:06:54,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:06:54,369 INFO L225 Difference]: With dead ends: 35999 [2020-10-27 05:06:54,369 INFO L226 Difference]: Without dead ends: 24081 [2020-10-27 05:06:54,392 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:06:54,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24081 states. [2020-10-27 05:06:55,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24081 to 23981. [2020-10-27 05:06:55,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23981 states. [2020-10-27 05:06:55,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23981 states to 23981 states and 35554 transitions. [2020-10-27 05:06:55,669 INFO L78 Accepts]: Start accepts. Automaton has 23981 states and 35554 transitions. Word has length 317 [2020-10-27 05:06:55,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:06:55,670 INFO L481 AbstractCegarLoop]: Abstraction has 23981 states and 35554 transitions. [2020-10-27 05:06:55,670 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:06:55,670 INFO L276 IsEmpty]: Start isEmpty. Operand 23981 states and 35554 transitions. [2020-10-27 05:06:55,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2020-10-27 05:06:55,719 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:06:55,719 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] [2020-10-27 05:06:55,720 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 05:06:55,720 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:06:55,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:06:55,721 INFO L82 PathProgramCache]: Analyzing trace with hash 535210825, now seen corresponding path program 1 times [2020-10-27 05:06:55,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:06:55,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1015855284] [2020-10-27 05:06:55,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:06:55,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:06:55,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:55,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:55,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:55,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:56,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:56,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:56,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:56,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:56,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:56,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:56,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:56,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:57,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:59,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:00,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:07:00,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 327 [2020-10-27 05:07:00,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 05:07:00,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-27 05:07:00,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:07:00,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:07:00,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:07:00,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-27 05:07:00,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:07:01,887 WARN L193 SmtUtils]: Spent 797.00 ms on a formula simplification that was a NOOP. DAG size: 340 [2020-10-27 05:07:01,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:07:01,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:07:01,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:01,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:07:01,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:07:01,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:07:01,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 05:07:01,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:07:01,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:07:01,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:07:01,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:07:01,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:07:02,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:07:02,117 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1015855284] [2020-10-27 05:07:02,117 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:07:02,117 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:07:02,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704520987] [2020-10-27 05:07:02,118 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:07:02,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:07:02,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:07:02,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:07:02,119 INFO L87 Difference]: Start difference. First operand 23981 states and 35554 transitions. Second operand 5 states. [2020-10-27 05:07:13,347 WARN L193 SmtUtils]: Spent 868.00 ms on a formula simplification that was a NOOP. DAG size: 346 [2020-10-27 05:07:16,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:07:16,694 INFO L93 Difference]: Finished difference Result 70533 states and 104388 transitions. [2020-10-27 05:07:16,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:07:16,697 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 319 [2020-10-27 05:07:16,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:07:16,794 INFO L225 Difference]: With dead ends: 70533 [2020-10-27 05:07:16,794 INFO L226 Difference]: Without dead ends: 47095 [2020-10-27 05:07:16,843 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:07:16,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47095 states. [2020-10-27 05:07:19,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47095 to 46953. [2020-10-27 05:07:19,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46953 states. [2020-10-27 05:07:19,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46953 states to 46953 states and 69134 transitions. [2020-10-27 05:07:19,295 INFO L78 Accepts]: Start accepts. Automaton has 46953 states and 69134 transitions. Word has length 319 [2020-10-27 05:07:19,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:07:19,296 INFO L481 AbstractCegarLoop]: Abstraction has 46953 states and 69134 transitions. [2020-10-27 05:07:19,296 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:07:19,296 INFO L276 IsEmpty]: Start isEmpty. Operand 46953 states and 69134 transitions. [2020-10-27 05:07:19,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2020-10-27 05:07:19,369 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:07:19,370 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] [2020-10-27 05:07:19,370 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 05:07:19,370 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:07:19,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:07:19,371 INFO L82 PathProgramCache]: Analyzing trace with hash -1422810447, now seen corresponding path program 1 times [2020-10-27 05:07:19,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:07:19,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1576695076] [2020-10-27 05:07:19,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:07:19,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:07:19,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:19,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:19,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:19,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:19,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:20,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:20,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:20,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:20,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:20,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:20,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:20,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:24,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:07:24,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 329 [2020-10-27 05:07:24,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 05:07:24,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-27 05:07:24,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:07:24,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:07:24,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:07:24,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-27 05:07:24,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:07:25,722 WARN L193 SmtUtils]: Spent 864.00 ms on a formula simplification that was a NOOP. DAG size: 340 [2020-10-27 05:07:25,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:07:25,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:07:25,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:25,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:07:25,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:07:25,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:07:25,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 05:07:25,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:07:25,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:07:25,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:07:25,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:07:25,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:07:25,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:07:25,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1576695076] [2020-10-27 05:07:25,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:07:25,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:07:25,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528102008] [2020-10-27 05:07:25,902 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:07:25,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:07:25,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:07:25,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:07:25,903 INFO L87 Difference]: Start difference. First operand 46953 states and 69134 transitions. Second operand 5 states. [2020-10-27 05:07:39,741 WARN L193 SmtUtils]: Spent 999.00 ms on a formula simplification that was a NOOP. DAG size: 346 [2020-10-27 05:07:43,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:07:43,938 INFO L93 Difference]: Finished difference Result 136553 states and 200262 transitions. [2020-10-27 05:07:43,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:07:43,940 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 321 [2020-10-27 05:07:43,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:07:44,123 INFO L225 Difference]: With dead ends: 136553 [2020-10-27 05:07:44,123 INFO L226 Difference]: Without dead ends: 91923 [2020-10-27 05:07:44,196 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:07:44,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91923 states. [2020-10-27 05:07:49,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91923 to 91879. [2020-10-27 05:07:49,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91879 states. [2020-10-27 05:07:50,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91879 states to 91879 states and 134084 transitions. [2020-10-27 05:07:50,249 INFO L78 Accepts]: Start accepts. Automaton has 91879 states and 134084 transitions. Word has length 321 [2020-10-27 05:07:50,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:07:50,249 INFO L481 AbstractCegarLoop]: Abstraction has 91879 states and 134084 transitions. [2020-10-27 05:07:50,249 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:07:50,249 INFO L276 IsEmpty]: Start isEmpty. Operand 91879 states and 134084 transitions. [2020-10-27 05:07:50,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2020-10-27 05:07:50,347 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:07:50,347 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] [2020-10-27 05:07:50,347 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 05:07:50,348 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:07:50,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:07:50,348 INFO L82 PathProgramCache]: Analyzing trace with hash -1451326190, now seen corresponding path program 1 times [2020-10-27 05:07:50,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:07:50,349 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1165440291] [2020-10-27 05:07:50,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:07:50,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:07:50,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:50,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:50,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:50,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:50,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:50,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:50,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:51,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:51,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:51,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:51,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:51,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:51,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:55,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:07:55,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 331 [2020-10-27 05:07:55,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 05:07:55,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-27 05:07:55,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:07:55,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:07:55,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:07:55,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-27 05:07:55,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:07:56,451 WARN L193 SmtUtils]: Spent 878.00 ms on a formula simplification that was a NOOP. DAG size: 340 [2020-10-27 05:07:56,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:07:56,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:07:56,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:56,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:07:56,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:07:56,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:07:56,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 05:07:56,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:07:56,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:07:56,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:07:56,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:07:56,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:07:56,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:07:56,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1165440291] [2020-10-27 05:07:56,619 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:07:56,619 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:07:56,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524017011] [2020-10-27 05:07:56,621 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:07:56,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:07:56,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:07:56,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:07:56,622 INFO L87 Difference]: Start difference. First operand 91879 states and 134084 transitions. Second operand 5 states. [2020-10-27 05:08:16,474 WARN L193 SmtUtils]: Spent 934.00 ms on a formula simplification that was a NOOP. DAG size: 346 [2020-10-27 05:08:23,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:08:23,017 INFO L93 Difference]: Finished difference Result 267387 states and 388898 transitions. [2020-10-27 05:08:23,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:08:23,018 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 323 [2020-10-27 05:08:23,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:08:23,568 INFO L225 Difference]: With dead ends: 267387 [2020-10-27 05:08:23,568 INFO L226 Difference]: Without dead ends: 180047 [2020-10-27 05:08:23,669 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:08:23,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180047 states. [2020-10-27 05:08:36,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180047 to 179811. [2020-10-27 05:08:36,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179811 states. [2020-10-27 05:08:37,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179811 states to 179811 states and 260412 transitions. [2020-10-27 05:08:37,408 INFO L78 Accepts]: Start accepts. Automaton has 179811 states and 260412 transitions. Word has length 323 [2020-10-27 05:08:37,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:08:37,408 INFO L481 AbstractCegarLoop]: Abstraction has 179811 states and 260412 transitions. [2020-10-27 05:08:37,409 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:08:37,409 INFO L276 IsEmpty]: Start isEmpty. Operand 179811 states and 260412 transitions. [2020-10-27 05:08:37,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2020-10-27 05:08:37,561 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:08:37,562 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] [2020-10-27 05:08:37,562 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 05:08:37,562 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:08:37,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:08:37,562 INFO L82 PathProgramCache]: Analyzing trace with hash -757808880, now seen corresponding path program 1 times [2020-10-27 05:08:37,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:08:37,563 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2119823572] [2020-10-27 05:08:37,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:08:37,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:08:37,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:37,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:38,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:38,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:38,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:38,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:38,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:38,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:38,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:38,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:38,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:38,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:38,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:38,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:42,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:08:42,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 333 [2020-10-27 05:08:42,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 05:08:42,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-27 05:08:42,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:08:42,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:08:42,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:08:42,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-27 05:08:42,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:08:43,622 WARN L193 SmtUtils]: Spent 867.00 ms on a formula simplification that was a NOOP. DAG size: 340 [2020-10-27 05:08:43,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:08:43,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:08:43,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:43,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:08:43,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:08:43,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:08:43,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 05:08:43,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:08:43,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:08:43,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:08:43,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:08:43,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:08:43,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:08:43,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2119823572] [2020-10-27 05:08:43,857 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:08:43,857 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:08:43,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328334157] [2020-10-27 05:08:43,860 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:08:43,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:08:43,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:08:43,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:08:43,861 INFO L87 Difference]: Start difference. First operand 179811 states and 260412 transitions. Second operand 5 states.