/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 04:34:07,462 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 04:34:07,467 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 04:34:07,526 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 04:34:07,527 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 04:34:07,533 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 04:34:07,536 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 04:34:07,541 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 04:34:07,544 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 04:34:07,550 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 04:34:07,552 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 04:34:07,554 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 04:34:07,554 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 04:34:07,558 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 04:34:07,560 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 04:34:07,562 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 04:34:07,564 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 04:34:07,567 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 04:34:07,574 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 04:34:07,596 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 04:34:07,601 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 04:34:07,605 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 04:34:07,607 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 04:34:07,609 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 04:34:07,625 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 04:34:07,625 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 04:34:07,625 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 04:34:07,627 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 04:34:07,628 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 04:34:07,629 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 04:34:07,629 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 04:34:07,633 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 04:34:07,635 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 04:34:07,636 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 04:34:07,637 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 04:34:07,637 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 04:34:07,638 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 04:34:07,638 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 04:34:07,639 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 04:34:07,640 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 04:34:07,640 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 04:34:07,648 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 04:34:07,698 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 04:34:07,699 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 04:34:07,703 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 04:34:07,703 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 04:34:07,703 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 04:34:07,703 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 04:34:07,704 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 04:34:07,704 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 04:34:07,704 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 04:34:07,704 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 04:34:07,705 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 04:34:07,706 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 04:34:07,706 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 04:34:07,706 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 04:34:07,706 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 04:34:07,706 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 04:34:07,706 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 04:34:07,707 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 04:34:07,707 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 04:34:07,707 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 04:34:07,707 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 04:34:07,707 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 04:34:07,708 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 04:34:07,708 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 04:34:07,708 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 04:34:07,708 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 04:34:07,708 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 04:34:07,709 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 04:34:07,709 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 04:34:07,709 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 04:34:08,146 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 04:34:08,172 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 04:34:08,175 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 04:34:08,176 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 04:34:08,177 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 04:34:08,178 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c [2020-10-27 04:34:08,253 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c8ce901e7/ea1c3103c67f43ce9609a50d5ce797cc/FLAG99d7f6838 [2020-10-27 04:34:08,854 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 04:34:08,856 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c [2020-10-27 04:34:08,876 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c8ce901e7/ea1c3103c67f43ce9609a50d5ce797cc/FLAG99d7f6838 [2020-10-27 04:34:09,147 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c8ce901e7/ea1c3103c67f43ce9609a50d5ce797cc [2020-10-27 04:34:09,151 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 04:34:09,159 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 04:34:09,164 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 04:34:09,165 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 04:34:09,169 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 04:34:09,171 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:34:09" (1/1) ... [2020-10-27 04:34:09,176 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b824137 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:34:09, skipping insertion in model container [2020-10-27 04:34:09,176 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:34:09" (1/1) ... [2020-10-27 04:34:09,185 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 04:34:09,246 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 04:34:09,552 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:34:09,566 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 04:34:09,622 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:34:09,665 INFO L208 MainTranslator]: Completed translation [2020-10-27 04:34:09,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:34:09 WrapperNode [2020-10-27 04:34:09,672 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 04:34:09,674 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 04:34:09,674 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 04:34:09,674 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 04:34:09,702 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:34:09" (1/1) ... [2020-10-27 04:34:09,704 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:34:09" (1/1) ... [2020-10-27 04:34:09,736 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:34:09" (1/1) ... [2020-10-27 04:34:09,737 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:34:09" (1/1) ... [2020-10-27 04:34:09,767 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:34:09" (1/1) ... [2020-10-27 04:34:09,777 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:34:09" (1/1) ... [2020-10-27 04:34:09,780 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:34:09" (1/1) ... [2020-10-27 04:34:09,785 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 04:34:09,786 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 04:34:09,786 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 04:34:09,787 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 04:34:09,788 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:34:09" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 04:34:09,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 04:34:09,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 04:34:09,872 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 04:34:09,873 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-27 04:34:09,873 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-27 04:34:09,874 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-27 04:34:09,874 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2020-10-27 04:34:09,874 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-27 04:34:09,875 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-27 04:34:09,875 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 04:34:09,876 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-27 04:34:09,876 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 04:34:09,876 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 04:34:09,876 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 04:34:09,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 04:34:09,877 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 04:34:09,878 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 04:34:09,878 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 04:34:09,878 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 04:34:09,878 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 04:34:09,878 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 04:34:09,878 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 04:34:09,878 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 04:34:09,879 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 04:34:09,879 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 04:34:09,879 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 04:34:09,879 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 04:34:09,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 04:34:09,880 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 04:34:09,880 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 04:34:09,880 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 04:34:09,880 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 04:34:09,880 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 04:34:10,749 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 04:34:10,749 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 04:34:10,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:34:10 BoogieIcfgContainer [2020-10-27 04:34:10,758 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 04:34:10,767 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 04:34:10,768 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 04:34:10,776 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 04:34:10,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:34:09" (1/3) ... [2020-10-27 04:34:10,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28fa52fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:34:10, skipping insertion in model container [2020-10-27 04:34:10,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:34:09" (2/3) ... [2020-10-27 04:34:10,780 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28fa52fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:34:10, skipping insertion in model container [2020-10-27 04:34:10,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:34:10" (3/3) ... [2020-10-27 04:34:10,784 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c [2020-10-27 04:34:10,800 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 04:34:10,806 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 04:34:10,820 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 04:34:10,873 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 04:34:10,873 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 04:34:10,873 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 04:34:10,873 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 04:34:10,874 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 04:34:10,874 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 04:34:10,874 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 04:34:10,874 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 04:34:10,901 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states. [2020-10-27 04:34:10,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-27 04:34:10,912 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:34:10,913 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] [2020-10-27 04:34:10,913 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:34:10,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:34:10,920 INFO L82 PathProgramCache]: Analyzing trace with hash -51277868, now seen corresponding path program 1 times [2020-10-27 04:34:10,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:34:10,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1919228660] [2020-10-27 04:34:10,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:34:11,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:11,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:11,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:11,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 04:34:11,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:11,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 385 [2020-10-27 04:34:11,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:11,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:34:11,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 04:34:11,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:34:11,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 04:34:12,083 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 04:34:12,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:34:12,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:12,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:12,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:12,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:34:12,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:12,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 04:34:12,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:12,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:34:12,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:34:12,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:34:12,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:12,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:34:12,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:12,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:12,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:12,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:34:12,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:12,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:34:12,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:12,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:34:12,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:34:12,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:34:12,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:12,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-27 04:34:12,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:12,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:12,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:12,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:34:12,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:12,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:34:12,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:12,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:34:12,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:34:12,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:34:12,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:12,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 04:34:12,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:12,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:12,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:12,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:34:12,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:12,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:34:12,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:12,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:34:12,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:34:12,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:34:12,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:12,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-27 04:34:12,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:12,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:12,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:12,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:34:12,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:12,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:34:12,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:12,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:34:12,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:34:12,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:34:12,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:12,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-27 04:34:12,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:12,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:12,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:12,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:34:12,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:12,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:34:12,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:12,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:34:12,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:34:12,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:34:12,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:12,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-27 04:34:12,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:12,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:12,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:12,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:34:12,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:12,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:34:12,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:12,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:34:12,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:34:12,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:34:12,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:12,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:34:12,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1919228660] [2020-10-27 04:34:12,416 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:34:12,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 04:34:12,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202678219] [2020-10-27 04:34:12,422 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 04:34:12,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:34:12,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 04:34:12,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:34:12,440 INFO L87 Difference]: Start difference. First operand 131 states. Second operand 7 states. [2020-10-27 04:34:13,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:34:13,717 INFO L93 Difference]: Finished difference Result 226 states and 331 transitions. [2020-10-27 04:34:13,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 04:34:13,720 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 57 [2020-10-27 04:34:13,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:34:13,731 INFO L225 Difference]: With dead ends: 226 [2020-10-27 04:34:13,731 INFO L226 Difference]: Without dead ends: 127 [2020-10-27 04:34:13,735 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-10-27 04:34:13,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-10-27 04:34:13,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 123. [2020-10-27 04:34:13,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-10-27 04:34:13,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 184 transitions. [2020-10-27 04:34:13,791 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 184 transitions. Word has length 57 [2020-10-27 04:34:13,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:34:13,792 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 184 transitions. [2020-10-27 04:34:13,792 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 04:34:13,792 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 184 transitions. [2020-10-27 04:34:13,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-27 04:34:13,795 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:34:13,795 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] [2020-10-27 04:34:13,795 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 04:34:13,795 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:34:13,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:34:13,796 INFO L82 PathProgramCache]: Analyzing trace with hash -2100665710, now seen corresponding path program 1 times [2020-10-27 04:34:13,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:34:13,797 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [645106994] [2020-10-27 04:34:13,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:34:13,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:13,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:14,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:14,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 04:34:14,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:14,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 377 [2020-10-27 04:34:14,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:14,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:34:14,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 04:34:14,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:34:14,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:14,667 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 04:34:14,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:34:14,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:14,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:14,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:14,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:34:14,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:14,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 04:34:14,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:14,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:34:14,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:34:14,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:34:14,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:14,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:34:14,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:14,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:14,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:14,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:34:14,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:14,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 04:34:14,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:14,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:34:14,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:34:14,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:34:14,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:14,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-27 04:34:14,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:14,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:14,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:14,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:34:14,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:14,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:34:14,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:14,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:34:14,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:34:14,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:34:14,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:14,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 04:34:14,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:14,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:14,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:14,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:34:14,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:14,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:34:14,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:14,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:34:14,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:34:14,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:34:14,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:14,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-27 04:34:14,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:14,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:14,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:14,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:34:14,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:14,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:34:14,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:14,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:34:14,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:34:14,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:34:14,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:14,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-27 04:34:14,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:14,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:14,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:14,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:34:14,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:14,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:34:14,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:14,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:34:14,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:34:14,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:34:14,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:14,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-27 04:34:14,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:14,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:14,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:14,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:34:14,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:14,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:34:14,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:14,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:34:14,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:34:14,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:34:14,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:14,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:34:14,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [645106994] [2020-10-27 04:34:14,970 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:34:14,970 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 04:34:14,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511199671] [2020-10-27 04:34:14,972 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 04:34:14,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:34:14,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 04:34:14,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-27 04:34:14,973 INFO L87 Difference]: Start difference. First operand 123 states and 184 transitions. Second operand 11 states. [2020-10-27 04:34:15,429 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-27 04:34:15,851 WARN L193 SmtUtils]: Spent 387.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-27 04:34:18,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:34:18,246 INFO L93 Difference]: Finished difference Result 228 states and 332 transitions. [2020-10-27 04:34:18,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 04:34:18,247 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 57 [2020-10-27 04:34:18,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:34:18,255 INFO L225 Difference]: With dead ends: 228 [2020-10-27 04:34:18,255 INFO L226 Difference]: Without dead ends: 137 [2020-10-27 04:34:18,257 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-27 04:34:18,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-10-27 04:34:18,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 123. [2020-10-27 04:34:18,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-10-27 04:34:18,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 160 transitions. [2020-10-27 04:34:18,309 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 160 transitions. Word has length 57 [2020-10-27 04:34:18,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:34:18,309 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 160 transitions. [2020-10-27 04:34:18,309 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 04:34:18,309 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 160 transitions. [2020-10-27 04:34:18,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-27 04:34:18,319 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:34:18,319 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] [2020-10-27 04:34:18,319 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 04:34:18,319 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:34:18,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:34:18,320 INFO L82 PathProgramCache]: Analyzing trace with hash -1378617896, now seen corresponding path program 1 times [2020-10-27 04:34:18,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:34:18,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [902796382] [2020-10-27 04:34:18,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:34:18,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:18,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:18,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:18,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:18,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:23,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:23,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-27 04:34:23,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:34:23,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 04:34:23,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:23,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 04:34:23,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 04:34:23,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-27 04:34:23,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:34:23,795 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 04:34:23,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:34:23,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:23,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:23,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:23,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:34:23,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:23,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 04:34:23,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:23,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:34:23,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:34:23,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:34:23,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:23,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:34:23,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:23,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:23,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:23,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 04:34:23,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:23,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-27 04:34:23,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:23,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:34:23,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:34:23,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 04:34:23,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:24,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 04:34:24,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:24,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:24,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:24,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:34:24,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:24,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 04:34:24,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:24,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:34:24,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:34:24,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:34:24,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 22 [2020-10-27 04:34:24,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-27 04:34:24,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:24,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:24,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:24,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:34:24,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:24,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 04:34:24,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:24,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:34:24,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:34:24,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:34:24,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:24,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 04:34:24,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:24,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:24,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:24,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:34:24,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:24,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 04:34:24,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:24,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:34:24,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:34:24,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:34:24,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:24,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 04:34:24,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:24,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:24,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:24,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:34:24,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:24,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 04:34:24,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:24,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:34:24,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:34:24,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:34:24,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:24,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-27 04:34:24,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:24,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:24,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:24,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:34:24,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:24,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:34:24,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:24,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:34:24,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 04:34:24,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 04:34:24,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:24,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:34:24,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [902796382] [2020-10-27 04:34:24,403 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:34:24,403 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-27 04:34:24,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061037343] [2020-10-27 04:34:24,404 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 04:34:24,404 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:34:24,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 04:34:24,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2020-10-27 04:34:24,405 INFO L87 Difference]: Start difference. First operand 123 states and 160 transitions. Second operand 16 states. [2020-10-27 04:34:24,817 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-27 04:34:25,239 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-27 04:34:25,710 WARN L193 SmtUtils]: Spent 421.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-27 04:34:26,196 WARN L193 SmtUtils]: Spent 431.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-27 04:34:26,541 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2020-10-27 04:34:26,968 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2020-10-27 04:34:27,686 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2020-10-27 04:34:28,082 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2020-10-27 04:34:28,264 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2020-10-27 04:34:28,424 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2020-10-27 04:34:29,002 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2020-10-27 04:34:29,569 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2020-10-27 04:34:29,985 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2020-10-27 04:34:30,620 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2020-10-27 04:34:31,302 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-27 04:34:31,715 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-27 04:34:32,205 WARN L193 SmtUtils]: Spent 446.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-27 04:34:32,605 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-27 04:34:34,171 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2020-10-27 04:34:34,334 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2020-10-27 04:34:34,911 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2020-10-27 04:34:35,968 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2020-10-27 04:34:36,136 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2020-10-27 04:34:36,294 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2020-10-27 04:34:36,717 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2020-10-27 04:34:36,879 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2020-10-27 04:34:37,457 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2020-10-27 04:34:37,974 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2020-10-27 04:34:38,136 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2020-10-27 04:34:38,296 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2020-10-27 04:34:38,609 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2020-10-27 04:34:38,777 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2020-10-27 04:34:39,417 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2020-10-27 04:34:39,817 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2020-10-27 04:34:39,970 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2020-10-27 04:34:40,140 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2020-10-27 04:34:40,484 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2020-10-27 04:34:41,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:34:41,497 INFO L93 Difference]: Finished difference Result 955 states and 1349 transitions. [2020-10-27 04:34:41,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2020-10-27 04:34:41,498 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 80 [2020-10-27 04:34:41,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:34:41,510 INFO L225 Difference]: With dead ends: 955 [2020-10-27 04:34:41,510 INFO L226 Difference]: Without dead ends: 870 [2020-10-27 04:34:41,514 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1876 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=1166, Invalid=4534, Unknown=0, NotChecked=0, Total=5700 [2020-10-27 04:34:41,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 870 states. [2020-10-27 04:34:41,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 870 to 810. [2020-10-27 04:34:41,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 810 states. [2020-10-27 04:34:41,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 810 states to 810 states and 1164 transitions. [2020-10-27 04:34:41,620 INFO L78 Accepts]: Start accepts. Automaton has 810 states and 1164 transitions. Word has length 80 [2020-10-27 04:34:41,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:34:41,621 INFO L481 AbstractCegarLoop]: Abstraction has 810 states and 1164 transitions. [2020-10-27 04:34:41,621 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 04:34:41,621 INFO L276 IsEmpty]: Start isEmpty. Operand 810 states and 1164 transitions. [2020-10-27 04:34:41,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-27 04:34:41,625 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:34:41,626 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] [2020-10-27 04:34:41,626 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 04:34:41,626 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:34:41,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:34:41,627 INFO L82 PathProgramCache]: Analyzing trace with hash -788957372, now seen corresponding path program 1 times [2020-10-27 04:34:41,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:34:41,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [696521549] [2020-10-27 04:34:41,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:34:41,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:41,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:41,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:41,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:43,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:46,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:46,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-27 04:34:46,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:34:46,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-27 04:34:46,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:46,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:34:46,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-27 04:34:46,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 04:34:46,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:47,130 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 04:34:47,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:34:47,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:47,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:47,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:47,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:34:47,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:47,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:34:47,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:47,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:34:47,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:34:47,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:34:47,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:47,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:34:47,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:47,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:47,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:47,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 04:34:47,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:47,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 04:34:47,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:47,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:34:47,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:34:47,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 04:34:47,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:47,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 04:34:47,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:47,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:47,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:47,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:34:47,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:47,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:34:47,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:47,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:34:47,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:34:47,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:34:47,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:47,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-27 04:34:47,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:47,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:47,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:47,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:34:47,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:47,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 04:34:47,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:47,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:34:47,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:34:47,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:34:47,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:47,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 04:34:47,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:47,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:47,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:47,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:34:47,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:47,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:34:47,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:47,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:34:47,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:34:47,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:34:47,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:47,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 04:34:47,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:47,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:47,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:47,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:34:47,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:47,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:34:47,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:47,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:34:47,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:34:47,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:34:47,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:47,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-27 04:34:47,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:47,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:47,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:47,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:34:47,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:47,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:34:47,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:47,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:34:47,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:34:47,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:34:47,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:47,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:34:47,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [696521549] [2020-10-27 04:34:47,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:34:47,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 04:34:47,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243131588] [2020-10-27 04:34:47,482 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 04:34:47,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:34:47,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 04:34:47,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-27 04:34:47,483 INFO L87 Difference]: Start difference. First operand 810 states and 1164 transitions. Second operand 10 states. [2020-10-27 04:34:47,871 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-27 04:34:48,568 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2020-10-27 04:34:50,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:34:50,704 INFO L93 Difference]: Finished difference Result 2300 states and 3311 transitions. [2020-10-27 04:34:50,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 04:34:50,705 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 81 [2020-10-27 04:34:50,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:34:50,721 INFO L225 Difference]: With dead ends: 2300 [2020-10-27 04:34:50,721 INFO L226 Difference]: Without dead ends: 1528 [2020-10-27 04:34:50,728 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=115, Invalid=305, Unknown=0, NotChecked=0, Total=420 [2020-10-27 04:34:50,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1528 states. [2020-10-27 04:34:50,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1528 to 1462. [2020-10-27 04:34:50,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1462 states. [2020-10-27 04:34:50,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1462 states to 1462 states and 2093 transitions. [2020-10-27 04:34:50,860 INFO L78 Accepts]: Start accepts. Automaton has 1462 states and 2093 transitions. Word has length 81 [2020-10-27 04:34:50,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:34:50,860 INFO L481 AbstractCegarLoop]: Abstraction has 1462 states and 2093 transitions. [2020-10-27 04:34:50,860 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 04:34:50,861 INFO L276 IsEmpty]: Start isEmpty. Operand 1462 states and 2093 transitions. [2020-10-27 04:34:50,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-27 04:34:50,863 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:34:50,863 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] [2020-10-27 04:34:50,863 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 04:34:50,863 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:34:50,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:34:50,864 INFO L82 PathProgramCache]: Analyzing trace with hash 1428459024, now seen corresponding path program 1 times [2020-10-27 04:34:50,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:34:50,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1189394491] [2020-10-27 04:34:50,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:34:50,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:50,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:50,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:51,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:55,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:55,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-27 04:34:55,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 04:34:55,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 04:34:55,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:55,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:34:55,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-27 04:34:55,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 04:34:55,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:56,376 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 04:34:56,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:34:56,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:56,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:56,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:56,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:34:56,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:56,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 04:34:56,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:56,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:34:56,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:34:56,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:34:56,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:56,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:34:56,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:56,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:56,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:56,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 04:34:56,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:56,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 04:34:56,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:56,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:34:56,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:34:56,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 04:34:56,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:56,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 04:34:56,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:56,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:56,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:56,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:34:56,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:56,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:34:56,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:56,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:34:56,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:34:56,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:34:56,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:56,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-27 04:34:56,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:56,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:56,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:56,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:34:56,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:56,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:34:56,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:56,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:34:56,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:34:56,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 04:34:56,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:56,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 04:34:56,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:56,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:56,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:56,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:34:56,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:56,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 04:34:56,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:56,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:34:56,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:34:56,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:34:56,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:56,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 04:34:56,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:56,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:56,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:56,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:34:56,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:56,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:34:56,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:56,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:34:56,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:34:56,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:34:56,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 04:34:56,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-27 04:34:56,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:56,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:56,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:56,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:34:56,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:56,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:34:56,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:56,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:34:56,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:34:56,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:34:56,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:56,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:34:56,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1189394491] [2020-10-27 04:34:56,743 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:34:56,743 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 04:34:56,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283114608] [2020-10-27 04:34:56,744 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 04:34:56,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:34:56,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 04:34:56,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-27 04:34:56,745 INFO L87 Difference]: Start difference. First operand 1462 states and 2093 transitions. Second operand 10 states. [2020-10-27 04:34:57,138 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-27 04:34:59,466 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-27 04:35:00,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:35:00,347 INFO L93 Difference]: Finished difference Result 4178 states and 5971 transitions. [2020-10-27 04:35:00,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 04:35:00,349 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 82 [2020-10-27 04:35:00,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:35:00,366 INFO L225 Difference]: With dead ends: 4178 [2020-10-27 04:35:00,366 INFO L226 Difference]: Without dead ends: 2754 [2020-10-27 04:35:00,372 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=119, Invalid=301, Unknown=0, NotChecked=0, Total=420 [2020-10-27 04:35:00,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2754 states. [2020-10-27 04:35:00,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2754 to 2643. [2020-10-27 04:35:00,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2643 states. [2020-10-27 04:35:00,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2643 states to 2643 states and 3752 transitions. [2020-10-27 04:35:00,585 INFO L78 Accepts]: Start accepts. Automaton has 2643 states and 3752 transitions. Word has length 82 [2020-10-27 04:35:00,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:35:00,585 INFO L481 AbstractCegarLoop]: Abstraction has 2643 states and 3752 transitions. [2020-10-27 04:35:00,586 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 04:35:00,586 INFO L276 IsEmpty]: Start isEmpty. Operand 2643 states and 3752 transitions. [2020-10-27 04:35:00,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-27 04:35:00,588 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:35:00,589 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:35:00,589 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 04:35:00,589 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:35:00,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:35:00,590 INFO L82 PathProgramCache]: Analyzing trace with hash 1644972448, now seen corresponding path program 1 times [2020-10-27 04:35:00,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:35:00,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1011402457] [2020-10-27 04:35:00,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:35:00,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:00,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:00,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:01,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:01,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-27 04:35:01,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:35:01,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1309 [2020-10-27 04:35:01,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:01,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:35:01,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-27 04:35:01,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-27 04:35:01,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:02,304 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 04:35:02,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:35:02,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:02,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:02,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:02,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:35:02,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:02,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:35:02,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:02,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:35:02,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:35:02,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:35:02,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:02,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:35:02,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:02,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:02,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:02,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 04:35:02,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:02,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 04:35:02,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:02,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:35:02,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:35:02,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 04:35:02,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:02,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 04:35:02,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:02,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:02,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:02,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:35:02,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:02,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:35:02,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:02,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:35:02,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:35:02,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:35:02,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:02,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-27 04:35:02,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:02,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:02,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:02,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:35:02,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:02,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:35:02,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:02,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:35:02,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:35:02,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 04:35:02,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:02,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 04:35:02,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:02,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:02,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:02,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:35:02,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:02,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:35:02,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:02,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:35:02,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:35:02,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 04:35:02,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:02,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-27 04:35:02,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:02,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:02,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:02,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:35:02,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:02,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 04:35:02,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:02,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:35:02,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:35:02,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:35:02,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:02,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 04:35:02,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:02,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:02,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:02,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:35:02,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:02,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:35:02,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:02,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:35:02,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:35:02,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:35:02,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:02,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:35:02,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1011402457] [2020-10-27 04:35:02,618 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:35:02,618 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 04:35:02,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419617712] [2020-10-27 04:35:02,618 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 04:35:02,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:35:02,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 04:35:02,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-27 04:35:02,620 INFO L87 Difference]: Start difference. First operand 2643 states and 3752 transitions. Second operand 10 states. [2020-10-27 04:35:03,076 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-27 04:35:05,738 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-27 04:35:06,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:35:06,515 INFO L93 Difference]: Finished difference Result 7553 states and 10680 transitions. [2020-10-27 04:35:06,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 04:35:06,516 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 83 [2020-10-27 04:35:06,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:35:06,550 INFO L225 Difference]: With dead ends: 7553 [2020-10-27 04:35:06,551 INFO L226 Difference]: Without dead ends: 4948 [2020-10-27 04:35:06,561 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=119, Invalid=301, Unknown=0, NotChecked=0, Total=420 [2020-10-27 04:35:06,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4948 states. [2020-10-27 04:35:06,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4948 to 4765. [2020-10-27 04:35:06,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4765 states. [2020-10-27 04:35:06,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4765 states to 4765 states and 6676 transitions. [2020-10-27 04:35:06,997 INFO L78 Accepts]: Start accepts. Automaton has 4765 states and 6676 transitions. Word has length 83 [2020-10-27 04:35:06,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:35:06,998 INFO L481 AbstractCegarLoop]: Abstraction has 4765 states and 6676 transitions. [2020-10-27 04:35:06,998 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 04:35:06,998 INFO L276 IsEmpty]: Start isEmpty. Operand 4765 states and 6676 transitions. [2020-10-27 04:35:06,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-27 04:35:06,999 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:35:06,999 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] [2020-10-27 04:35:07,000 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 04:35:07,000 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:35:07,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:35:07,000 INFO L82 PathProgramCache]: Analyzing trace with hash -854967934, now seen corresponding path program 1 times [2020-10-27 04:35:07,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:35:07,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [496243667] [2020-10-27 04:35:07,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:35:07,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:07,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:07,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:08,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:08,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-27 04:35:08,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:35:08,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1062 [2020-10-27 04:35:08,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:08,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:35:08,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 04:35:08,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 04:35:08,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:08,558 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 04:35:08,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:35:08,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:08,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:08,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:08,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:35:08,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:08,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:35:08,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:08,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:35:08,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:35:08,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:35:08,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:08,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:35:08,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:08,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:08,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:08,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 04:35:08,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:08,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 04:35:08,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:08,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:35:08,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:35:08,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 04:35:08,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:08,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 04:35:08,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:08,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:08,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:08,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:35:08,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:08,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 04:35:08,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:08,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:35:08,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:35:08,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:35:08,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:08,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-27 04:35:08,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:08,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:08,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:08,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:35:08,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:08,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:35:08,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:08,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:35:08,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:35:08,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 04:35:08,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:08,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 04:35:08,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:08,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:08,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:08,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:35:08,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:08,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:35:08,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:08,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:35:08,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:35:08,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 04:35:08,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:08,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-27 04:35:08,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:08,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:08,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:08,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:35:08,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:08,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:35:08,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:08,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:35:08,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-27 04:35:08,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:35:08,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:08,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-27 04:35:08,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:08,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:08,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:08,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:35:08,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:08,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:35:08,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:08,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:35:08,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:35:08,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:35:08,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:08,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:35:08,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [496243667] [2020-10-27 04:35:08,990 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:35:08,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-27 04:35:08,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564471318] [2020-10-27 04:35:08,991 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 04:35:08,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:35:08,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 04:35:08,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2020-10-27 04:35:08,992 INFO L87 Difference]: Start difference. First operand 4765 states and 6676 transitions. Second operand 15 states. [2020-10-27 04:35:09,508 WARN L193 SmtUtils]: Spent 401.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-27 04:35:09,954 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-27 04:35:10,861 WARN L193 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-27 04:35:11,052 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-27 04:35:11,769 WARN L193 SmtUtils]: Spent 401.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-27 04:35:12,169 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-27 04:35:12,577 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-27 04:35:12,911 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-27 04:35:13,977 WARN L193 SmtUtils]: Spent 419.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-27 04:35:14,425 WARN L193 SmtUtils]: Spent 400.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-27 04:35:14,858 WARN L193 SmtUtils]: Spent 395.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-27 04:35:15,312 WARN L193 SmtUtils]: Spent 424.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-27 04:35:15,740 WARN L193 SmtUtils]: Spent 395.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-27 04:35:16,196 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-27 04:35:16,617 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-27 04:35:16,806 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-27 04:35:16,959 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-27 04:35:17,104 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-27 04:35:17,389 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-27 04:35:17,547 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-27 04:35:17,707 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-27 04:35:19,041 WARN L193 SmtUtils]: Spent 412.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-27 04:35:19,502 WARN L193 SmtUtils]: Spent 412.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-27 04:35:19,959 WARN L193 SmtUtils]: Spent 424.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-27 04:35:20,391 WARN L193 SmtUtils]: Spent 396.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-27 04:35:20,850 WARN L193 SmtUtils]: Spent 415.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-27 04:35:21,281 WARN L193 SmtUtils]: Spent 397.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-27 04:35:21,730 WARN L193 SmtUtils]: Spent 404.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-27 04:35:22,155 WARN L193 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-27 04:35:22,617 WARN L193 SmtUtils]: Spent 403.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-27 04:35:23,049 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-27 04:35:23,527 WARN L193 SmtUtils]: Spent 402.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-27 04:35:23,947 WARN L193 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-27 04:35:24,091 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-27 04:35:24,560 WARN L193 SmtUtils]: Spent 396.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-27 04:35:24,985 WARN L193 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-27 04:35:25,148 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-10-27 04:35:25,285 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-27 04:35:25,456 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-10-27 04:35:25,590 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-27 04:35:25,770 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-10-27 04:35:25,919 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-27 04:35:26,070 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-27 04:35:26,374 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-27 04:35:26,508 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2020-10-27 04:35:26,691 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-27 04:35:26,831 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2020-10-27 04:35:27,014 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-27 04:35:31,830 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-27 04:35:32,021 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-27 04:35:32,206 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-27 04:35:32,377 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-27 04:35:32,541 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2020-10-27 04:35:32,740 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-27 04:35:32,897 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2020-10-27 04:35:33,087 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-27 04:35:33,247 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2020-10-27 04:35:33,465 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-27 04:35:36,030 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-10-27 04:35:36,219 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-10-27 04:35:36,425 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-27 04:35:36,592 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-10-27 04:35:36,756 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-27 04:35:36,960 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-27 04:35:37,114 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-27 04:35:37,321 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-27 04:35:37,479 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-27 04:35:37,702 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-27 04:35:37,872 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2020-10-27 04:35:38,244 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2020-10-27 04:35:38,469 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2020-10-27 04:35:40,586 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-10-27 04:35:40,847 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-10-27 04:35:41,070 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-10-27 04:35:41,244 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-27 04:35:41,447 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-27 04:35:41,609 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-27 04:35:41,811 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-27 04:35:41,979 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-27 04:35:42,207 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-27 04:35:42,400 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2020-10-27 04:35:42,560 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-27 04:35:42,802 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2020-10-27 04:35:43,043 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2020-10-27 04:35:49,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:35:49,373 INFO L93 Difference]: Finished difference Result 57601 states and 84232 transitions. [2020-10-27 04:35:49,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2020-10-27 04:35:49,374 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 84 [2020-10-27 04:35:49,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:35:49,824 INFO L225 Difference]: With dead ends: 57601 [2020-10-27 04:35:49,824 INFO L226 Difference]: Without dead ends: 52874 [2020-10-27 04:35:49,896 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7326 ImplicationChecksByTransitivity, 23.4s TimeCoverageRelationStatistics Valid=2317, Invalid=16589, Unknown=0, NotChecked=0, Total=18906 [2020-10-27 04:35:49,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52874 states. [2020-10-27 04:35:54,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52874 to 52252. [2020-10-27 04:35:54,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52252 states. [2020-10-27 04:35:54,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52252 states to 52252 states and 69522 transitions. [2020-10-27 04:35:54,735 INFO L78 Accepts]: Start accepts. Automaton has 52252 states and 69522 transitions. Word has length 84 [2020-10-27 04:35:54,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:35:54,736 INFO L481 AbstractCegarLoop]: Abstraction has 52252 states and 69522 transitions. [2020-10-27 04:35:54,736 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 04:35:54,736 INFO L276 IsEmpty]: Start isEmpty. Operand 52252 states and 69522 transitions. [2020-10-27 04:35:54,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-27 04:35:54,739 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:35:54,740 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] [2020-10-27 04:35:54,740 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 04:35:54,740 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:35:54,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:35:54,741 INFO L82 PathProgramCache]: Analyzing trace with hash 1141831656, now seen corresponding path program 1 times [2020-10-27 04:35:54,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:35:54,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [749308704] [2020-10-27 04:35:54,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:35:54,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:54,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:54,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:56,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:56,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-27 04:35:56,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:35:56,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1486 [2020-10-27 04:35:56,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:56,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:35:56,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 04:35:56,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-27 04:35:56,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:56,635 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 04:35:56,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:35:56,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:56,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:56,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:56,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:35:56,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:56,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 04:35:56,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:56,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:35:56,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:35:56,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:35:56,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:56,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:35:56,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:56,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:56,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:56,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 04:35:56,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:56,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 04:35:56,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:56,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:35:56,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:35:56,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:35:56,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:56,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 04:35:56,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:56,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:56,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:56,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:35:56,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:56,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 04:35:56,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:56,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:35:56,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:35:56,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:35:56,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:56,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-27 04:35:56,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:56,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:56,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:56,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:35:56,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:56,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:35:56,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:56,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:35:56,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 04:35:56,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:35:56,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:56,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 04:35:56,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:56,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:56,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:56,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:35:56,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:56,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:35:56,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:56,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:35:56,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 04:35:56,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:35:56,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:57,169 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-10-27 04:35:57,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-27 04:35:57,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:57,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:57,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:57,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:35:57,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:57,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:35:57,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:57,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:35:57,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 04:35:57,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:35:57,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:57,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-27 04:35:57,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:57,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:57,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:57,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:35:57,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:57,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:35:57,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:57,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:35:57,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:35:57,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:35:57,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:57,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:35:57,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [749308704] [2020-10-27 04:35:57,201 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:35:57,201 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 04:35:57,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395694652] [2020-10-27 04:35:57,202 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 04:35:57,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:35:57,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 04:35:57,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-27 04:35:57,203 INFO L87 Difference]: Start difference. First operand 52252 states and 69522 transitions. Second operand 10 states. [2020-10-27 04:35:57,648 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-27 04:35:59,358 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-27 04:36:06,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:36:06,602 INFO L93 Difference]: Finished difference Result 150819 states and 202155 transitions. [2020-10-27 04:36:06,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 04:36:06,603 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 84 [2020-10-27 04:36:06,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:36:07,339 INFO L225 Difference]: With dead ends: 150819 [2020-10-27 04:36:07,339 INFO L226 Difference]: Without dead ends: 98614 [2020-10-27 04:36:07,502 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=119, Invalid=301, Unknown=0, NotChecked=0, Total=420 [2020-10-27 04:36:07,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98614 states. [2020-10-27 04:36:14,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98614 to 97462. [2020-10-27 04:36:14,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97462 states. [2020-10-27 04:36:15,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97462 states to 97462 states and 128819 transitions. [2020-10-27 04:36:15,337 INFO L78 Accepts]: Start accepts. Automaton has 97462 states and 128819 transitions. Word has length 84 [2020-10-27 04:36:15,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:36:15,340 INFO L481 AbstractCegarLoop]: Abstraction has 97462 states and 128819 transitions. [2020-10-27 04:36:15,341 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 04:36:15,341 INFO L276 IsEmpty]: Start isEmpty. Operand 97462 states and 128819 transitions. [2020-10-27 04:36:15,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-27 04:36:15,346 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:36:15,346 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] [2020-10-27 04:36:15,346 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 04:36:15,346 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:36:15,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:36:15,347 INFO L82 PathProgramCache]: Analyzing trace with hash -893926015, now seen corresponding path program 1 times [2020-10-27 04:36:15,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:36:15,347 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [596112450] [2020-10-27 04:36:15,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:36:15,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:36:15,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:36:15,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:36:15,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-27 04:36:15,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:36:15,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 301 [2020-10-27 04:36:15,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:36:15,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:36:15,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-27 04:36:15,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:36:15,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:36:16,287 WARN L193 SmtUtils]: Spent 482.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 04:36:16,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:36:16,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:36:16,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:36:16,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:36:16,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:36:16,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:36:16,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:36:16,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:36:16,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:36:16,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:36:16,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:36:16,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:36:16,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:36:16,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:36:16,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:36:16,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:36:16,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 04:36:16,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:36:16,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:36:16,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:36:16,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:36:16,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:36:16,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:36:16,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:36:16,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 04:36:16,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:36:16,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:36:16,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:36:16,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:36:16,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:36:16,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:36:16,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:36:16,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:36:16,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:36:16,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:36:16,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:36:16,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-27 04:36:16,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:36:16,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:36:16,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:36:16,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:36:16,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:36:16,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:36:16,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:36:16,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:36:16,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:36:16,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:36:16,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:36:16,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 04:36:16,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:36:16,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:36:16,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:36:16,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:36:16,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:36:16,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:36:16,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:36:16,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:36:16,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:36:16,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:36:16,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:36:16,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 04:36:16,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:36:16,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:36:16,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:36:16,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:36:16,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:36:16,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:36:16,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:36:16,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:36:16,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:36:16,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:36:16,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:36:16,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-27 04:36:16,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:36:16,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:36:16,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:36:16,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:36:16,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:36:16,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 04:36:16,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:36:16,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:36:16,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:36:16,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 04:36:16,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:36:16,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:36:16,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [596112450] [2020-10-27 04:36:16,595 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:36:16,595 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-27 04:36:16,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996020235] [2020-10-27 04:36:16,596 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 04:36:16,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:36:16,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 04:36:16,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-10-27 04:36:16,597 INFO L87 Difference]: Start difference. First operand 97462 states and 128819 transitions. Second operand 13 states. [2020-10-27 04:36:18,609 WARN L193 SmtUtils]: Spent 447.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-27 04:36:19,078 WARN L193 SmtUtils]: Spent 428.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-27 04:36:19,590 WARN L193 SmtUtils]: Spent 410.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-27 04:36:20,088 WARN L193 SmtUtils]: Spent 453.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-27 04:36:27,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:36:27,511 INFO L93 Difference]: Finished difference Result 118854 states and 163250 transitions. [2020-10-27 04:36:27,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 04:36:27,512 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 85 [2020-10-27 04:36:27,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:36:28,245 INFO L225 Difference]: With dead ends: 118854 [2020-10-27 04:36:28,245 INFO L226 Difference]: Without dead ends: 118851 [2020-10-27 04:36:28,297 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2020-10-27 04:36:28,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118851 states. [2020-10-27 04:36:36,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118851 to 106678. [2020-10-27 04:36:36,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106678 states. [2020-10-27 04:36:36,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106678 states to 106678 states and 138035 transitions. [2020-10-27 04:36:36,721 INFO L78 Accepts]: Start accepts. Automaton has 106678 states and 138035 transitions. Word has length 85 [2020-10-27 04:36:36,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:36:36,722 INFO L481 AbstractCegarLoop]: Abstraction has 106678 states and 138035 transitions. [2020-10-27 04:36:36,722 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 04:36:36,722 INFO L276 IsEmpty]: Start isEmpty. Operand 106678 states and 138035 transitions. [2020-10-27 04:36:36,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-27 04:36:36,724 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:36:36,725 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] [2020-10-27 04:36:36,725 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 04:36:36,725 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:36:36,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:36:36,725 INFO L82 PathProgramCache]: Analyzing trace with hash -1208472093, now seen corresponding path program 1 times [2020-10-27 04:36:36,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:36:36,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1867184545] [2020-10-27 04:36:36,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:36:36,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:36:36,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:36:37,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:36:37,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-27 04:36:37,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:36:37,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 419 [2020-10-27 04:36:37,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:36:37,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:36:37,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 04:36:37,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-27 04:36:37,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:36:37,522 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 04:36:37,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:36:37,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:36:37,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:36:37,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:36:37,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:36:37,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:36:37,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:36:37,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:36:37,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:36:37,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:36:37,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:36:37,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:36:37,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:36:37,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:36:37,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:36:37,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:36:37,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 04:36:37,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:36:37,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:36:37,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:36:37,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:36:37,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:36:37,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 04:36:37,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:36:37,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 04:36:37,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:36:37,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:36:37,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:36:37,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:36:37,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:36:37,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 04:36:37,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:36:37,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:36:37,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:36:37,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:36:37,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:36:37,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-27 04:36:37,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:36:37,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:36:37,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:36:37,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:36:37,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:36:37,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:36:37,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:36:37,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:36:37,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:36:37,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:36:37,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:36:37,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 04:36:37,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:36:37,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:36:37,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:36:37,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:36:37,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:36:37,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:36:37,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:36:37,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:36:37,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:36:37,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 04:36:37,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:36:37,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 04:36:37,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:36:37,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:36:37,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:36:37,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:36:37,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:36:37,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:36:37,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:36:37,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:36:37,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:36:37,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 04:36:37,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:36:37,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-27 04:36:37,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:36:37,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:36:37,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:36:37,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:36:37,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:36:37,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:36:37,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:36:37,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:36:37,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-27 04:36:37,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:36:37,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:36:37,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:36:37,824 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1867184545] [2020-10-27 04:36:37,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:36:37,825 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 04:36:37,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452223443] [2020-10-27 04:36:37,826 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 04:36:37,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:36:37,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 04:36:37,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-27 04:36:37,826 INFO L87 Difference]: Start difference. First operand 106678 states and 138035 transitions. Second operand 10 states. [2020-10-27 04:36:38,271 WARN L193 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-27 04:36:41,175 WARN L193 SmtUtils]: Spent 388.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-27 04:36:53,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:36:53,714 INFO L93 Difference]: Finished difference Result 302724 states and 395158 transitions. [2020-10-27 04:36:53,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 04:36:53,715 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 86 [2020-10-27 04:36:53,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:36:54,362 INFO L225 Difference]: With dead ends: 302724 [2020-10-27 04:36:54,363 INFO L226 Difference]: Without dead ends: 196209 [2020-10-27 04:36:54,516 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=160, Invalid=440, Unknown=0, NotChecked=0, Total=600 [2020-10-27 04:36:55,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196209 states. [2020-10-27 04:37:07,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196209 to 194078. [2020-10-27 04:37:07,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194078 states. [2020-10-27 04:37:08,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194078 states to 194078 states and 253123 transitions. [2020-10-27 04:37:08,476 INFO L78 Accepts]: Start accepts. Automaton has 194078 states and 253123 transitions. Word has length 86 [2020-10-27 04:37:08,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:37:08,477 INFO L481 AbstractCegarLoop]: Abstraction has 194078 states and 253123 transitions. [2020-10-27 04:37:08,477 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 04:37:08,477 INFO L276 IsEmpty]: Start isEmpty. Operand 194078 states and 253123 transitions. [2020-10-27 04:37:08,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-27 04:37:08,534 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:37:08,535 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:37:08,535 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 04:37:08,535 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:37:08,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:37:08,536 INFO L82 PathProgramCache]: Analyzing trace with hash -580994918, now seen corresponding path program 1 times [2020-10-27 04:37:08,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:37:08,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [652036652] [2020-10-27 04:37:08,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:37:08,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:37:08,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:37:08,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:37:11,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:37:11,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-27 04:37:11,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:37:11,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2978 [2020-10-27 04:37:11,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:37:11,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 04:37:11,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:37:11,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-27 04:37:11,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:37:12,171 WARN L193 SmtUtils]: Spent 483.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 04:37:12,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:37:12,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:37:12,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:37:12,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:37:12,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:37:12,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:37:12,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 04:37:12,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:37:12,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:37:12,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:37:12,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:37:12,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:37:12,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:37:12,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:37:12,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:37:12,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:37:12,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 04:37:12,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:37:12,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 04:37:12,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:37:12,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:37:12,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:37:12,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 04:37:12,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:37:12,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 04:37:12,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:37:12,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:37:12,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:37:12,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:37:12,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:37:12,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:37:12,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:37:12,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:37:12,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:37:12,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:37:12,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:37:12,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-27 04:37:12,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:37:12,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:37:12,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:37:12,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:37:12,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:37:12,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 04:37:12,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:37:12,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 04:37:12,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:37:12,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 04:37:12,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:37:12,754 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 31 [2020-10-27 04:37:12,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 04:37:12,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:37:12,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:37:12,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:37:12,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:37:12,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:37:12,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 04:37:12,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:37:12,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:37:12,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:37:12,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 04:37:12,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:37:12,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 04:37:12,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:37:12,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:37:12,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:37:12,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:37:12,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:37:12,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:37:12,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:37:12,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:37:12,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:37:12,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 04:37:12,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:37:12,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-27 04:37:12,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:37:12,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:37:12,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:37:12,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:37:12,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:37:12,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:37:12,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:37:12,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:37:12,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:37:12,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:37:12,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:37:12,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-27 04:37:12,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:37:12,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:37:12,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:37:12,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:37:12,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:37:12,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:37:12,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:37:12,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:37:12,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:37:12,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:37:12,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:37:12,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-27 04:37:12,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:37:12,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:37:12,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:37:12,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:37:12,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:37:12,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:37:12,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:37:12,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:37:12,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:37:12,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:37:12,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:37:12,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-27 04:37:12,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:37:12,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:37:12,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:37:12,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:37:13,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:37:13,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:37:13,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:37:13,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:37:13,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:37:13,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:37:13,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:37:13,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-27 04:37:13,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:37:13,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:37:13,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:37:13,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:37:13,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:37:13,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:37:13,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:37:13,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:37:13,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:37:13,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:37:13,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:37:13,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-27 04:37:13,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:37:13,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:37:13,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:37:13,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:37:13,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:37:13,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:37:13,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:37:13,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:37:13,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:37:13,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:37:13,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:37:13,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-10-27 04:37:13,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:37:13,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:37:13,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:37:13,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:37:13,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:37:13,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:37:13,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:37:13,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:37:13,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 04:37:13,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:37:13,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:37:13,161 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-27 04:37:13,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [652036652] [2020-10-27 04:37:13,162 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:37:13,162 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-27 04:37:13,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112394387] [2020-10-27 04:37:13,163 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 04:37:13,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:37:13,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 04:37:13,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-10-27 04:37:13,164 INFO L87 Difference]: Start difference. First operand 194078 states and 253123 transitions. Second operand 16 states. [2020-10-27 04:37:13,761 WARN L193 SmtUtils]: Spent 420.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-27 04:37:14,604 WARN L193 SmtUtils]: Spent 407.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-27 04:37:16,031 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 169 DAG size of output: 163 [2020-10-27 04:37:16,223 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2020-10-27 04:37:16,359 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2020-10-27 04:37:17,069 WARN L193 SmtUtils]: Spent 424.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-27 04:37:17,403 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2020-10-27 04:37:17,599 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-27 04:37:18,272 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2020-10-27 04:37:18,970 WARN L193 SmtUtils]: Spent 429.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-27 04:37:20,098 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-27 04:37:21,241 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 171 DAG size of output: 165 [2020-10-27 04:37:21,591 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-27 04:37:22,504 WARN L193 SmtUtils]: Spent 388.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-27 04:37:22,649 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2020-10-27 04:37:22,875 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2020-10-27 04:37:23,162 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-27 04:37:23,584 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2020-10-27 04:37:23,764 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-27 04:37:24,416 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-27 04:37:25,468 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2020-10-27 04:37:25,956 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2020-10-27 04:37:31,485 WARN L193 SmtUtils]: Spent 502.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-10-27 04:37:31,895 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 63