/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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/pals_floodmax.5_overflow.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 17:40:16,589 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 17:40:16,593 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 17:40:16,650 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 17:40:16,651 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 17:40:16,657 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 17:40:16,660 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 17:40:16,664 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 17:40:16,668 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 17:40:16,674 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 17:40:16,675 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 17:40:16,677 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 17:40:16,677 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 17:40:16,680 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 17:40:16,682 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 17:40:16,684 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 17:40:16,685 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 17:40:16,689 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 17:40:16,696 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 17:40:16,704 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 17:40:16,706 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 17:40:16,707 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 17:40:16,709 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 17:40:16,712 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 17:40:16,737 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 17:40:16,737 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 17:40:16,737 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 17:40:16,740 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 17:40:16,741 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 17:40:16,742 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 17:40:16,742 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 17:40:16,743 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 17:40:16,745 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 17:40:16,746 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 17:40:16,747 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 17:40:16,747 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 17:40:16,748 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 17:40:16,748 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 17:40:16,749 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 17:40:16,750 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 17:40:16,750 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 17:40:16,758 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 [2020-10-28 17:40:16,808 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 17:40:16,809 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 17:40:16,813 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 17:40:16,813 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 17:40:16,814 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 17:40:16,814 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 17:40:16,814 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 17:40:16,814 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 17:40:16,815 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 17:40:16,815 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 17:40:16,816 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 17:40:16,816 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 17:40:16,816 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 17:40:16,817 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 17:40:16,817 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 17:40:16,817 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 17:40:16,817 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 17:40:16,817 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 17:40:16,818 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 17:40:16,818 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 17:40:16,818 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 17:40:16,818 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 17:40:16,818 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 17:40:16,819 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 17:40:16,819 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 17:40:16,819 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 17:40:16,819 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 17:40:16,819 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 17:40:16,820 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 17:40:16,820 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 17:40:17,206 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 17:40:17,252 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 17:40:17,256 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 17:40:17,257 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 17:40:17,258 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 17:40:17,260 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_floodmax.5_overflow.ufo.UNBOUNDED.pals.c [2020-10-28 17:40:17,356 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2617b3c8e/2fc4ce8582054e87ad6d737725b33909/FLAG70ebdafb9 [2020-10-28 17:40:18,123 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 17:40:18,124 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_floodmax.5_overflow.ufo.UNBOUNDED.pals.c [2020-10-28 17:40:18,157 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2617b3c8e/2fc4ce8582054e87ad6d737725b33909/FLAG70ebdafb9 [2020-10-28 17:40:18,369 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2617b3c8e/2fc4ce8582054e87ad6d737725b33909 [2020-10-28 17:40:18,372 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 17:40:18,379 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 17:40:18,381 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 17:40:18,381 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 17:40:18,385 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 17:40:18,386 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 05:40:18" (1/1) ... [2020-10-28 17:40:18,389 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@605995f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:40:18, skipping insertion in model container [2020-10-28 17:40:18,390 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 05:40:18" (1/1) ... [2020-10-28 17:40:18,398 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 17:40:18,464 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 17:40:19,021 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 17:40:19,040 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 17:40:19,172 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 17:40:19,203 INFO L208 MainTranslator]: Completed translation [2020-10-28 17:40:19,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:40:19 WrapperNode [2020-10-28 17:40:19,206 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 17:40:19,207 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 17:40:19,207 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 17:40:19,208 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 17:40:19,222 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:40:19" (1/1) ... [2020-10-28 17:40:19,225 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:40:19" (1/1) ... [2020-10-28 17:40:19,274 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:40:19" (1/1) ... [2020-10-28 17:40:19,275 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:40:19" (1/1) ... [2020-10-28 17:40:19,349 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:40:19" (1/1) ... [2020-10-28 17:40:19,384 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:40:19" (1/1) ... [2020-10-28 17:40:19,393 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:40:19" (1/1) ... [2020-10-28 17:40:19,408 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 17:40:19,409 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 17:40:19,409 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 17:40:19,409 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 17:40:19,410 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:40:19" (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 [2020-10-28 17:40:19,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 17:40:19,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 17:40:19,495 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 17:40:19,495 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 17:40:19,495 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-28 17:40:19,495 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-28 17:40:19,496 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-28 17:40:19,496 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2020-10-28 17:40:19,496 INFO L138 BoogieDeclarations]: Found implementation of procedure node5 [2020-10-28 17:40:19,496 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-28 17:40:19,496 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-28 17:40:19,496 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 17:40:19,497 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-28 17:40:19,497 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 17:40:19,497 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 17:40:19,497 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 17:40:19,497 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 17:40:19,497 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 17:40:19,498 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-28 17:40:19,498 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 17:40:19,498 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 17:40:19,498 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 17:40:19,498 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 17:40:19,498 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 17:40:19,499 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 17:40:19,499 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 17:40:19,499 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 17:40:19,499 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-28 17:40:19,499 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-28 17:40:19,499 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 17:40:19,499 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 17:40:19,500 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 17:40:19,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 17:40:19,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 17:40:19,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 17:40:19,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 17:40:19,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 17:40:19,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 17:40:23,155 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 17:40:23,155 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 17:40:23,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 05:40:23 BoogieIcfgContainer [2020-10-28 17:40:23,159 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 17:40:23,161 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 17:40:23,161 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 17:40:23,165 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 17:40:23,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 05:40:18" (1/3) ... [2020-10-28 17:40:23,167 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64f530cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 05:40:23, skipping insertion in model container [2020-10-28 17:40:23,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:40:19" (2/3) ... [2020-10-28 17:40:23,167 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64f530cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 05:40:23, skipping insertion in model container [2020-10-28 17:40:23,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 05:40:23" (3/3) ... [2020-10-28 17:40:23,170 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.5_overflow.ufo.UNBOUNDED.pals.c [2020-10-28 17:40:23,183 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 17:40:23,189 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 17:40:23,202 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 17:40:23,241 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 17:40:23,242 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 17:40:23,242 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 17:40:23,242 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 17:40:23,242 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 17:40:23,242 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 17:40:23,242 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 17:40:23,243 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 17:40:23,277 INFO L276 IsEmpty]: Start isEmpty. Operand 741 states. [2020-10-28 17:40:23,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-10-28 17:40:23,309 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:40:23,310 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] [2020-10-28 17:40:23,311 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:40:23,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:40:23,318 INFO L82 PathProgramCache]: Analyzing trace with hash -353876519, now seen corresponding path program 1 times [2020-10-28 17:40:23,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:40:23,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1522726774] [2020-10-28 17:40:23,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:40:23,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:40:24,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:40:24,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:40:24,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-10-28 17:40:24,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:40:24,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 945 [2020-10-28 17:40:24,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:40:24,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:40:24,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:40:24,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 145 [2020-10-28 17:40:24,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:40:24,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 17:40:26,628 WARN L193 SmtUtils]: Spent 1.59 s on a formula simplification that was a NOOP. DAG size: 385 [2020-10-28 17:40:26,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:40:26,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:40:26,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:40:26,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:40:26,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:40:26,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:40:26,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-28 17:40:26,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:40:26,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:40:26,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:40:26,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:40:26,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:40:26,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:40:26,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:40:26,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:40:26,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:40:26,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:40:26,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 17:40:26,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:40:26,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-28 17:40:26,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:40:26,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:40:26,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:40:26,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:40:26,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:40:26,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 17:40:27,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-28 17:40:27,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:40:27,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:40:27,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:40:27,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:40:27,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:40:27,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:40:27,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:40:27,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:40:27,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:40:27,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 17:40:27,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:40:27,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:40:27,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-28 17:40:27,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:40:27,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:40:27,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:40:27,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:40:27,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:40:27,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:40:27,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:40:27,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:40:27,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:40:27,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:40:27,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:40:27,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 17:40:27,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-28 17:40:27,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:40:27,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:40:27,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:40:27,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:40:27,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:40:27,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 17:40:27,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:40:27,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:40:27,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:40:27,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:40:27,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:40:27,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:40:27,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-28 17:40:27,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:40:27,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:40:27,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:40:27,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:40:27,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:40:27,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 17:40:27,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:40:27,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:40:27,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:40:27,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:40:27,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:40:27,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:40:27,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-28 17:40:27,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:40:27,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:40:27,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:40:27,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:40:27,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:40:27,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:40:27,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:40:27,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:40:27,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:40:27,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:40:27,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:40:27,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:40:27,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-10-28 17:40:27,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:40:27,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:40:27,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:40:27,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:40:27,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:40:27,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 17:40:27,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:40:27,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:40:27,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:40:27,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:40:27,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:40:27,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:40:27,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-28 17:40:27,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:40:27,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:40:27,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:40:27,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:40:27,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:40:27,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:40:27,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:40:27,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:40:27,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:40:27,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:40:27,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:40:27,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:40:27,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:40:27,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1522726774] [2020-10-28 17:40:27,631 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:40:27,631 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-28 17:40:27,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824581875] [2020-10-28 17:40:27,639 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 17:40:27,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:40:27,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 17:40:27,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-28 17:40:27,659 INFO L87 Difference]: Start difference. First operand 741 states. Second operand 8 states. [2020-10-28 17:40:30,906 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-28 17:40:31,539 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-28 17:40:32,192 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-28 17:40:32,853 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-28 17:40:33,443 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-28 17:40:34,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:40:34,268 INFO L93 Difference]: Finished difference Result 969 states and 1715 transitions. [2020-10-28 17:40:34,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 17:40:34,278 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 183 [2020-10-28 17:40:34,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:40:34,313 INFO L225 Difference]: With dead ends: 969 [2020-10-28 17:40:34,313 INFO L226 Difference]: Without dead ends: 783 [2020-10-28 17:40:34,319 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-10-28 17:40:34,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2020-10-28 17:40:34,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 733. [2020-10-28 17:40:34,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-10-28 17:40:34,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 1327 transitions. [2020-10-28 17:40:34,562 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 1327 transitions. Word has length 183 [2020-10-28 17:40:34,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:40:34,563 INFO L481 AbstractCegarLoop]: Abstraction has 733 states and 1327 transitions. [2020-10-28 17:40:34,563 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 17:40:34,563 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 1327 transitions. [2020-10-28 17:40:34,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-10-28 17:40:34,570 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:40:34,570 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] [2020-10-28 17:40:34,571 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 17:40:34,571 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:40:34,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:40:34,572 INFO L82 PathProgramCache]: Analyzing trace with hash 1585285527, now seen corresponding path program 1 times [2020-10-28 17:40:34,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:40:34,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [918968416] [2020-10-28 17:40:34,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:40:34,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:40:34,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:40:37,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:40:37,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-10-28 17:40:37,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:40:37,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2814 [2020-10-28 17:40:37,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:40:37,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:40:37,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 17:40:37,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-28 17:40:37,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:40:37,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:40:38,786 WARN L193 SmtUtils]: Spent 988.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2020-10-28 17:40:38,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:40:38,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:40:38,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:40:38,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:40:38,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:40:38,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:40:38,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 17:40:38,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:40:38,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:40:38,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:40:38,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:40:38,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:40:38,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:40:38,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:40:38,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:40:38,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:40:39,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:40:39,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 17:40:39,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:40:39,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 608 [2020-10-28 17:40:39,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:40:39,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:40:39,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:40:39,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:40:39,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-28 17:40:39,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:40:39,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-28 17:40:39,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:40:39,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:40:39,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:40:39,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:40:39,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:40:39,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:40:39,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:40:39,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:40:39,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:40:39,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:40:39,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:40:39,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:40:39,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-28 17:40:39,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:40:39,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:40:39,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:40:39,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:40:39,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:40:39,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:40:39,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:40:39,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:40:39,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:40:39,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:40:39,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:40:39,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:40:39,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-28 17:40:39,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:40:39,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:40:39,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:40:39,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:40:39,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:40:39,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:40:39,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:40:39,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:40:39,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:40:39,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:40:39,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:40:39,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:40:39,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-28 17:40:39,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:40:39,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:40:39,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:40:39,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:40:39,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:40:39,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:40:39,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:40:39,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:40:39,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:40:39,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:40:39,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:40:39,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:40:39,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-28 17:40:39,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:40:39,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:40:39,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:40:39,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:40:39,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:40:39,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:40:39,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:40:39,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:40:39,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:40:39,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:40:39,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:40:39,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:40:40,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-10-28 17:40:40,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:40:40,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:40:40,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:40:40,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:40:40,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:40:40,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:40:40,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:40:40,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:40:40,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:40:40,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:40:40,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:40:40,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:40:40,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-28 17:40:40,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:40:40,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:40:40,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:40:40,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:40:40,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:40:40,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:40:40,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:40:40,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:40:40,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:40:40,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:40:40,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:40:40,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:40:40,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:40:40,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [918968416] [2020-10-28 17:40:40,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:40:40,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-28 17:40:40,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073627740] [2020-10-28 17:40:40,137 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 17:40:40,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:40:40,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 17:40:40,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-28 17:40:40,138 INFO L87 Difference]: Start difference. First operand 733 states and 1327 transitions. Second operand 14 states. [2020-10-28 17:40:49,889 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification that was a NOOP. DAG size: 388 [2020-10-28 17:40:51,085 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification that was a NOOP. DAG size: 390 [2020-10-28 17:40:52,389 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification that was a NOOP. DAG size: 388 [2020-10-28 17:40:53,479 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification that was a NOOP. DAG size: 391 [2020-10-28 17:40:54,861 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-28 17:40:55,575 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-28 17:40:56,384 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-28 17:40:57,170 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-28 17:40:57,905 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-28 17:40:58,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:40:58,877 INFO L93 Difference]: Finished difference Result 964 states and 1703 transitions. [2020-10-28 17:40:58,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 17:40:58,877 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 183 [2020-10-28 17:40:58,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:40:58,885 INFO L225 Difference]: With dead ends: 964 [2020-10-28 17:40:58,885 INFO L226 Difference]: Without dead ends: 783 [2020-10-28 17:40:58,888 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506 [2020-10-28 17:40:58,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2020-10-28 17:40:59,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 733. [2020-10-28 17:40:59,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-10-28 17:40:59,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 1267 transitions. [2020-10-28 17:40:59,020 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 1267 transitions. Word has length 183 [2020-10-28 17:40:59,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:40:59,021 INFO L481 AbstractCegarLoop]: Abstraction has 733 states and 1267 transitions. [2020-10-28 17:40:59,022 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 17:40:59,022 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 1267 transitions. [2020-10-28 17:40:59,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-10-28 17:40:59,029 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:40:59,029 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] [2020-10-28 17:40:59,029 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 17:40:59,029 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:40:59,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:40:59,030 INFO L82 PathProgramCache]: Analyzing trace with hash -570092588, now seen corresponding path program 1 times [2020-10-28 17:40:59,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:40:59,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1522141270] [2020-10-28 17:40:59,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:40:59,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:40:59,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:40:59,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:41:00,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:41:01,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:41:02,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:41:04,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:41:04,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 268 [2020-10-28 17:41:04,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:41:04,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-28 17:41:04,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:41:04,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:41:04,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:41:04,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 154 [2020-10-28 17:41:04,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-28 17:41:04,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:41:05,360 WARN L193 SmtUtils]: Spent 986.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2020-10-28 17:41:05,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:41:05,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:41:05,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:41:05,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:41:05,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:41:05,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:41:05,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 17:41:05,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:41:05,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:41:05,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:41:05,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:41:05,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:41:05,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:41:05,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:41:05,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:41:05,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:41:05,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:41:05,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-28 17:41:05,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:41:05,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 294 [2020-10-28 17:41:05,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:41:05,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:41:05,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:41:05,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:41:05,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-28 17:41:05,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 17:41:05,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-10-28 17:41:05,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:41:05,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:41:05,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:41:05,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:41:05,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:41:05,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:41:05,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:41:05,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:41:05,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:41:05,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:41:05,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:41:05,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:41:05,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-10-28 17:41:05,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:41:05,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:41:05,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:41:05,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:41:05,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:41:05,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 17:41:05,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:41:05,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:41:05,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:41:05,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:41:05,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:41:05,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:41:05,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-10-28 17:41:05,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:41:05,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:41:05,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:41:05,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:41:05,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:41:05,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 17:41:05,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:41:05,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:41:05,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:41:05,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:41:05,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:41:05,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:41:06,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-28 17:41:06,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:41:06,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:41:06,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:41:06,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:41:06,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:41:06,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:41:06,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:41:06,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:41:06,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:41:06,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:41:06,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:41:06,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:41:06,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-10-28 17:41:06,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:41:06,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:41:06,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:41:06,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:41:06,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:41:06,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 17:41:06,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:41:06,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:41:06,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:41:06,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:41:06,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:41:06,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:41:06,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-10-28 17:41:06,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:41:06,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:41:06,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:41:06,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:41:06,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:41:06,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:41:06,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:41:06,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:41:06,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:41:06,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:41:06,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:41:06,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:41:06,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-10-28 17:41:06,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:41:06,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:41:06,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:41:06,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:41:06,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:41:06,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:41:06,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:41:06,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:41:06,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:41:06,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:41:06,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:41:06,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:41:06,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:41:06,522 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1522141270] [2020-10-28 17:41:06,522 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:41:06,522 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-28 17:41:06,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479806274] [2020-10-28 17:41:06,523 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 17:41:06,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:41:06,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 17:41:06,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-28 17:41:06,525 INFO L87 Difference]: Start difference. First operand 733 states and 1267 transitions. Second operand 11 states. [2020-10-28 17:41:07,641 WARN L193 SmtUtils]: Spent 1.01 s on a formula simplification that was a NOOP. DAG size: 389 [2020-10-28 17:41:15,271 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-28 17:41:15,969 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-28 17:41:16,787 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-28 17:41:17,580 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-28 17:41:18,187 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-28 17:41:18,840 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-28 17:41:19,134 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-28 17:41:20,896 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-28 17:41:21,392 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-28 17:41:21,909 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-28 17:41:23,258 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification that was a NOOP. DAG size: 393 [2020-10-28 17:41:23,570 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-28 17:41:23,921 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-28 17:41:24,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:41:24,000 INFO L93 Difference]: Finished difference Result 1177 states and 1991 transitions. [2020-10-28 17:41:24,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 17:41:24,001 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 242 [2020-10-28 17:41:24,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:41:24,012 INFO L225 Difference]: With dead ends: 1177 [2020-10-28 17:41:24,012 INFO L226 Difference]: Without dead ends: 1002 [2020-10-28 17:41:24,019 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2020-10-28 17:41:24,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1002 states. [2020-10-28 17:41:24,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1002 to 896. [2020-10-28 17:41:24,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 896 states. [2020-10-28 17:41:24,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896 states to 896 states and 1535 transitions. [2020-10-28 17:41:24,195 INFO L78 Accepts]: Start accepts. Automaton has 896 states and 1535 transitions. Word has length 242 [2020-10-28 17:41:24,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:41:24,197 INFO L481 AbstractCegarLoop]: Abstraction has 896 states and 1535 transitions. [2020-10-28 17:41:24,197 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 17:41:24,197 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states and 1535 transitions. [2020-10-28 17:41:24,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-10-28 17:41:24,203 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:41:24,203 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] [2020-10-28 17:41:24,203 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 17:41:24,204 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:41:24,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:41:24,204 INFO L82 PathProgramCache]: Analyzing trace with hash -61649480, now seen corresponding path program 1 times [2020-10-28 17:41:24,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:41:24,205 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [331421989] [2020-10-28 17:41:24,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:41:24,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:41:24,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:41:24,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:41:25,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:41:26,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:41:27,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:41:29,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:41:29,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:41:29,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 272 [2020-10-28 17:41:29,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:41:29,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5146 [2020-10-28 17:41:29,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:41:29,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:41:29,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:41:29,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 17:41:29,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 225 [2020-10-28 17:41:29,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 17:41:30,676 WARN L193 SmtUtils]: Spent 945.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2020-10-28 17:41:30,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:41:30,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:41:30,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:41:30,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:41:30,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:41:30,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:41:30,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 17:41:30,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:41:30,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:41:30,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:41:30,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:41:30,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:41:30,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:41:30,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:41:30,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:41:30,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:41:31,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:41:31,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-28 17:41:31,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:41:31,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 473 [2020-10-28 17:41:31,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:41:31,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:41:31,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:41:31,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:41:31,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 17:41:31,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:41:31,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-10-28 17:41:31,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:41:31,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:41:31,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:41:31,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:41:31,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:41:31,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:41:31,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:41:31,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:41:31,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:41:31,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:41:31,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:41:31,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:41:31,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-10-28 17:41:31,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:41:31,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:41:31,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:41:31,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:41:31,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:41:31,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:41:31,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:41:31,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:41:31,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:41:31,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:41:31,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:41:31,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:41:31,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-10-28 17:41:31,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:41:31,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:41:31,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:41:31,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:41:31,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:41:31,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:41:31,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:41:31,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:41:31,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:41:31,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:41:31,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:41:31,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:41:31,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-28 17:41:31,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:41:31,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:41:31,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:41:31,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:41:31,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:41:31,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:41:31,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:41:31,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:41:31,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:41:31,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:41:31,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:41:31,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:41:31,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-10-28 17:41:31,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:41:31,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:41:31,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:41:31,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 17:41:31,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:41:31,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 17:41:31,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:41:31,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:41:31,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:41:31,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 17:41:31,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:41:31,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:41:31,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-28 17:41:31,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:41:31,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:41:31,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:41:31,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:41:31,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:41:31,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:41:31,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:41:31,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:41:31,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:41:31,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:41:31,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:41:31,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:41:31,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-10-28 17:41:31,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:41:31,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:41:31,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:41:31,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:41:31,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:41:31,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:41:31,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:41:31,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:41:31,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:41:31,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:41:31,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:41:31,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:41:31,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:41:31,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [331421989] [2020-10-28 17:41:31,954 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:41:31,954 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-28 17:41:31,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108887746] [2020-10-28 17:41:31,955 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 17:41:31,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:41:31,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 17:41:31,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-28 17:41:31,956 INFO L87 Difference]: Start difference. First operand 896 states and 1535 transitions. Second operand 11 states. [2020-10-28 17:41:33,076 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification that was a NOOP. DAG size: 389 [2020-10-28 17:41:34,135 WARN L193 SmtUtils]: Spent 1.01 s on a formula simplification that was a NOOP. DAG size: 387 [2020-10-28 17:41:35,357 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification that was a NOOP. DAG size: 393 [2020-10-28 17:41:36,409 WARN L193 SmtUtils]: Spent 1.02 s on a formula simplification that was a NOOP. DAG size: 391 [2020-10-28 17:41:50,620 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification that was a NOOP. DAG size: 391 [2020-10-28 17:41:51,163 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-28 17:41:51,538 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-28 17:41:52,533 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-28 17:41:53,117 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-28 17:41:54,146 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-28 17:41:54,733 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-28 17:41:55,883 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-28 17:41:56,420 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-28 17:41:57,670 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-28 17:41:58,022 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-28 17:41:59,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:41:59,771 INFO L93 Difference]: Finished difference Result 2851 states and 4880 transitions. [2020-10-28 17:41:59,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-28 17:41:59,772 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 246 [2020-10-28 17:41:59,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:41:59,784 INFO L225 Difference]: With dead ends: 2851 [2020-10-28 17:41:59,784 INFO L226 Difference]: Without dead ends: 2040 [2020-10-28 17:41:59,787 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=165, Invalid=485, Unknown=0, NotChecked=0, Total=650 [2020-10-28 17:41:59,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2040 states. [2020-10-28 17:42:00,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2040 to 1854. [2020-10-28 17:42:00,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1854 states. [2020-10-28 17:42:00,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1854 states to 1854 states and 3163 transitions. [2020-10-28 17:42:00,119 INFO L78 Accepts]: Start accepts. Automaton has 1854 states and 3163 transitions. Word has length 246 [2020-10-28 17:42:00,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:42:00,120 INFO L481 AbstractCegarLoop]: Abstraction has 1854 states and 3163 transitions. [2020-10-28 17:42:00,120 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 17:42:00,120 INFO L276 IsEmpty]: Start isEmpty. Operand 1854 states and 3163 transitions. [2020-10-28 17:42:00,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-10-28 17:42:00,127 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:42:00,127 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] [2020-10-28 17:42:00,127 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 17:42:00,127 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:42:00,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:42:00,128 INFO L82 PathProgramCache]: Analyzing trace with hash 516108219, now seen corresponding path program 1 times [2020-10-28 17:42:00,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:42:00,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [437937357] [2020-10-28 17:42:00,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:42:00,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:00,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:00,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:00,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:02,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:03,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:03,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:04,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:05,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:05,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 272 [2020-10-28 17:42:05,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 17:42:05,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-28 17:42:05,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:05,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:05,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:42:05,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 17:42:05,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 224 [2020-10-28 17:42:05,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:06,426 WARN L193 SmtUtils]: Spent 980.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2020-10-28 17:42:06,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:42:06,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:06,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:06,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:06,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:42:06,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:06,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 17:42:06,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:06,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:06,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:42:06,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:06,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:42:06,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:06,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:42:06,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:06,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:06,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:06,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-28 17:42:06,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:06,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 420 [2020-10-28 17:42:06,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:06,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:06,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:42:06,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:06,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 17:42:06,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:07,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-10-28 17:42:07,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:07,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:07,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:07,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:42:07,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:07,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:42:07,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:07,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:07,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:42:07,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:07,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:42:07,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:07,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-10-28 17:42:07,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:07,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:07,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:07,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:42:07,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:07,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:42:07,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:07,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:07,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:42:07,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:07,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:42:07,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:07,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-10-28 17:42:07,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:07,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:07,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:07,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:42:07,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:07,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 17:42:07,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:07,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:07,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:42:07,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:07,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:42:07,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:07,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-28 17:42:07,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:07,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:07,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:07,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:42:07,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:07,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:42:07,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:07,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:07,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:42:07,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:07,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:42:07,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:07,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-10-28 17:42:07,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:07,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:07,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:07,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 17:42:07,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:07,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 17:42:07,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:07,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:07,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:42:07,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-28 17:42:07,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:42:07,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:07,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-28 17:42:07,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:07,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:07,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:07,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:42:07,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:07,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:42:07,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:07,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:07,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:42:07,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:42:07,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:42:07,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:07,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-10-28 17:42:07,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:07,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:07,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:07,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:42:07,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:07,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:42:07,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:07,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:07,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:42:07,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:42:07,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:42:07,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:07,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:42:07,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [437937357] [2020-10-28 17:42:07,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:42:07,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-28 17:42:07,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653063942] [2020-10-28 17:42:07,906 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 17:42:07,907 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:42:07,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 17:42:07,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-28 17:42:07,909 INFO L87 Difference]: Start difference. First operand 1854 states and 3163 transitions. Second operand 11 states. [2020-10-28 17:42:09,016 WARN L193 SmtUtils]: Spent 1.01 s on a formula simplification that was a NOOP. DAG size: 389 [2020-10-28 17:42:10,151 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification that was a NOOP. DAG size: 396 [2020-10-28 17:42:11,540 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 399 [2020-10-28 17:42:13,734 WARN L193 SmtUtils]: Spent 2.16 s on a formula simplification. DAG size of input: 398 DAG size of output: 396 [2020-10-28 17:42:33,136 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification that was a NOOP. DAG size: 391 [2020-10-28 17:42:33,737 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-28 17:42:34,132 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-28 17:42:34,912 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-28 17:42:35,426 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-28 17:42:35,998 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-28 17:42:37,137 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-28 17:42:37,632 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-28 17:42:38,328 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-28 17:42:39,601 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-28 17:42:40,117 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-28 17:42:40,728 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-28 17:42:41,350 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-28 17:42:42,861 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-28 17:42:43,291 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-28 17:42:43,876 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-28 17:42:45,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:42:45,960 INFO L93 Difference]: Finished difference Result 7242 states and 12325 transitions. [2020-10-28 17:42:45,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-28 17:42:45,966 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 246 [2020-10-28 17:42:45,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:42:46,033 INFO L225 Difference]: With dead ends: 7242 [2020-10-28 17:42:46,033 INFO L226 Difference]: Without dead ends: 5492 [2020-10-28 17:42:46,039 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930 [2020-10-28 17:42:46,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5492 states. [2020-10-28 17:42:47,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5492 to 5061. [2020-10-28 17:42:47,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5061 states. [2020-10-28 17:42:47,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5061 states to 5061 states and 8600 transitions. [2020-10-28 17:42:47,025 INFO L78 Accepts]: Start accepts. Automaton has 5061 states and 8600 transitions. Word has length 246 [2020-10-28 17:42:47,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:42:47,025 INFO L481 AbstractCegarLoop]: Abstraction has 5061 states and 8600 transitions. [2020-10-28 17:42:47,026 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 17:42:47,026 INFO L276 IsEmpty]: Start isEmpty. Operand 5061 states and 8600 transitions. [2020-10-28 17:42:47,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-10-28 17:42:47,040 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:42:47,040 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] [2020-10-28 17:42:47,041 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 17:42:47,041 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:42:47,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:42:47,041 INFO L82 PathProgramCache]: Analyzing trace with hash 2143342899, now seen corresponding path program 1 times [2020-10-28 17:42:47,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:42:47,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1455650005] [2020-10-28 17:42:47,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:42:47,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:47,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:47,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:47,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:49,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:49,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:50,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:52,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:52,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:52,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-10-28 17:42:52,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 17:42:52,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5098 [2020-10-28 17:42:52,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:52,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:52,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:42:52,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 17:42:52,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 226 [2020-10-28 17:42:52,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:53,422 WARN L193 SmtUtils]: Spent 996.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2020-10-28 17:42:53,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:42:53,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:53,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:53,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:53,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:42:53,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:53,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 17:42:53,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:53,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:53,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:42:53,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:53,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:42:53,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:53,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:42:53,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:53,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:53,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:53,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-28 17:42:53,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:53,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 389 [2020-10-28 17:42:53,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:53,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:53,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:42:53,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:53,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 17:42:53,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:54,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-10-28 17:42:54,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:54,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:54,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:54,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:42:54,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:54,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:42:54,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:54,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:54,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:42:54,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:54,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:42:54,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:54,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-10-28 17:42:54,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:54,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:54,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:54,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:42:54,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:54,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:42:54,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:54,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:54,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:42:54,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:54,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:42:54,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:54,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-10-28 17:42:54,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:54,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:54,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:54,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:42:54,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:54,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:42:54,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:54,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:54,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:42:54,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:54,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:42:54,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:54,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-28 17:42:54,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:54,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:54,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:54,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:42:54,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:54,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:42:54,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:54,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:54,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:42:54,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:54,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:42:54,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:54,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-10-28 17:42:54,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:54,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:54,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:54,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 17:42:54,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:54,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:42:54,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:54,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:54,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:42:54,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 17:42:54,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:42:54,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:54,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-10-28 17:42:54,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:54,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:54,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:54,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:42:54,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:54,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:42:54,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:54,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:54,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:42:54,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:42:54,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:42:54,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:54,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-10-28 17:42:54,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:54,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:54,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:54,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:42:54,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:54,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:42:54,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:54,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:54,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:42:54,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:42:54,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:42:54,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:54,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:42:54,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1455650005] [2020-10-28 17:42:54,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:42:54,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-28 17:42:54,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492753069] [2020-10-28 17:42:54,622 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 17:42:54,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:42:54,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 17:42:54,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-28 17:42:54,623 INFO L87 Difference]: Start difference. First operand 5061 states and 8600 transitions. Second operand 11 states. [2020-10-28 17:42:55,808 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 389 [2020-10-28 17:42:57,051 WARN L193 SmtUtils]: Spent 1.19 s on a formula simplification that was a NOOP. DAG size: 396 [2020-10-28 17:42:58,530 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification that was a NOOP. DAG size: 399 [2020-10-28 17:43:00,727 WARN L193 SmtUtils]: Spent 2.17 s on a formula simplification. DAG size of input: 398 DAG size of output: 396 [2020-10-28 17:43:23,203 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 391 [2020-10-28 17:43:23,732 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-28 17:43:24,149 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-28 17:43:24,902 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-28 17:43:25,377 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-28 17:43:25,923 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-28 17:43:27,065 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-28 17:43:27,543 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-28 17:43:28,280 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-28 17:43:29,469 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-28 17:43:29,975 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-28 17:43:30,723 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-28 17:43:31,839 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-28 17:43:32,923 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-28 17:43:33,407 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-28 17:43:33,810 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-28 17:43:35,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:43:35,842 INFO L93 Difference]: Finished difference Result 19930 states and 33771 transitions. [2020-10-28 17:43:35,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-28 17:43:35,849 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 247 [2020-10-28 17:43:35,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:43:35,913 INFO L225 Difference]: With dead ends: 19930 [2020-10-28 17:43:35,913 INFO L226 Difference]: Without dead ends: 15204 [2020-10-28 17:43:35,928 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 12.8s TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930 [2020-10-28 17:43:35,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15204 states. [2020-10-28 17:43:38,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15204 to 14183. [2020-10-28 17:43:38,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14183 states. [2020-10-28 17:43:38,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14183 states to 14183 states and 23980 transitions. [2020-10-28 17:43:38,712 INFO L78 Accepts]: Start accepts. Automaton has 14183 states and 23980 transitions. Word has length 247 [2020-10-28 17:43:38,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:43:38,713 INFO L481 AbstractCegarLoop]: Abstraction has 14183 states and 23980 transitions. [2020-10-28 17:43:38,713 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 17:43:38,713 INFO L276 IsEmpty]: Start isEmpty. Operand 14183 states and 23980 transitions. [2020-10-28 17:43:38,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-10-28 17:43:38,753 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:43:38,753 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] [2020-10-28 17:43:38,753 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 17:43:38,753 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:43:38,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:43:38,754 INFO L82 PathProgramCache]: Analyzing trace with hash 392423443, now seen corresponding path program 1 times [2020-10-28 17:43:38,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:43:38,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1772766936] [2020-10-28 17:43:38,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:43:38,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:38,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:39,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:39,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:40,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:40,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:41,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:41,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:41,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:43,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:43,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-28 17:43:43,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 17:43:43,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 17:43:43,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:43,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:43,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:43:43,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 17:43:43,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 229 [2020-10-28 17:43:43,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:45,152 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification that was a NOOP. DAG size: 385 [2020-10-28 17:43:45,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:43:45,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:45,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:45,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:45,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:43:45,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:45,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 17:43:45,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:45,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:45,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:43:45,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:45,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:43:45,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:45,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:43:45,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:45,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:45,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:45,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-28 17:43:45,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:45,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 305 [2020-10-28 17:43:45,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:45,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:45,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:43:45,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:45,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 17:43:45,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:45,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-28 17:43:45,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:45,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:45,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:45,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:43:45,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:45,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:43:45,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:45,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:45,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:43:45,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:45,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:43:45,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:45,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-10-28 17:43:45,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:45,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:45,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:45,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:43:45,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:45,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:43:45,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:45,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:45,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:43:45,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:45,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:43:45,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:45,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2020-10-28 17:43:45,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:45,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:45,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:45,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:43:45,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:45,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:43:45,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:45,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:45,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:43:45,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:45,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:43:45,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:45,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2020-10-28 17:43:45,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:45,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:45,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:45,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:43:45,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:45,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:43:45,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:45,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:45,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:43:45,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:45,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:43:45,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:45,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2020-10-28 17:43:45,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:45,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:46,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:46,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 17:43:46,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:46,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:43:46,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:46,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:46,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:43:46,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:43:46,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 17:43:46,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:46,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-10-28 17:43:46,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:46,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:46,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:46,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:43:46,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:46,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:43:46,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:46,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:46,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:43:46,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:43:46,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:43:46,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:46,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2020-10-28 17:43:46,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:46,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:46,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:46,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:43:46,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:46,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:43:46,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:46,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:46,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:43:46,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:43:46,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:43:46,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:46,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:43:46,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1772766936] [2020-10-28 17:43:46,226 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:43:46,226 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-28 17:43:46,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359976088] [2020-10-28 17:43:46,227 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 17:43:46,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:43:46,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 17:43:46,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-28 17:43:46,227 INFO L87 Difference]: Start difference. First operand 14183 states and 23980 transitions. Second operand 11 states. [2020-10-28 17:43:47,474 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification that was a NOOP. DAG size: 389 [2020-10-28 17:43:48,702 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification that was a NOOP. DAG size: 387 [2020-10-28 17:43:50,480 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification that was a NOOP. DAG size: 393 [2020-10-28 17:43:51,673 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification that was a NOOP. DAG size: 391