/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_opt-floodmax.5.1.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 04:43:19,670 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 04:43:19,673 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 04:43:19,723 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 04:43:19,725 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 04:43:19,731 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 04:43:19,734 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 04:43:19,738 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 04:43:19,742 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 04:43:19,748 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 04:43:19,749 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 04:43:19,751 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 04:43:19,751 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 04:43:19,754 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 04:43:19,758 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 04:43:19,760 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 04:43:19,762 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 04:43:19,765 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 04:43:19,780 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 04:43:19,788 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 04:43:19,790 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 04:43:19,792 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 04:43:19,794 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 04:43:19,796 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 04:43:19,804 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 04:43:19,805 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 04:43:19,805 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 04:43:19,807 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 04:43:19,808 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 04:43:19,809 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 04:43:19,809 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 04:43:19,810 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 04:43:19,812 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 04:43:19,813 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 04:43:19,814 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 04:43:19,814 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 04:43:19,815 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 04:43:19,815 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 04:43:19,816 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 04:43:19,816 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 04:43:19,817 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 04:43:19,825 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 04:43:19,876 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 04:43:19,876 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 04:43:19,880 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 04:43:19,881 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 04:43:19,881 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 04:43:19,881 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 04:43:19,881 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 04:43:19,881 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 04:43:19,882 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 04:43:19,882 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 04:43:19,883 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 04:43:19,883 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 04:43:19,883 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 04:43:19,884 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 04:43:19,884 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 04:43:19,884 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 04:43:19,884 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 04:43:19,884 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 04:43:19,885 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 04:43:19,885 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 04:43:19,885 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 04:43:19,885 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 04:43:19,885 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 04:43:19,886 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 04:43:19,886 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 04:43:19,886 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 04:43:19,886 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 04:43:19,886 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 04:43:19,886 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 04:43:19,887 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 04:43:20,330 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 04:43:20,364 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 04:43:20,367 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 04:43:20,369 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 04:43:20,369 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 04:43:20,372 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.5.1.ufo.UNBOUNDED.pals.c [2020-10-27 04:43:20,461 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e771bebdd/334ca1bd822149208bf50e9a6a4e270a/FLAG9040fe643 [2020-10-27 04:43:21,332 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 04:43:21,336 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.5.1.ufo.UNBOUNDED.pals.c [2020-10-27 04:43:21,371 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e771bebdd/334ca1bd822149208bf50e9a6a4e270a/FLAG9040fe643 [2020-10-27 04:43:21,562 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e771bebdd/334ca1bd822149208bf50e9a6a4e270a [2020-10-27 04:43:21,568 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 04:43:21,576 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 04:43:21,581 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 04:43:21,581 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 04:43:21,585 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 04:43:21,586 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:43:21" (1/1) ... [2020-10-27 04:43:21,590 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11161562 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:43:21, skipping insertion in model container [2020-10-27 04:43:21,591 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:43:21" (1/1) ... [2020-10-27 04:43:21,599 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 04:43:21,692 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 04:43:22,292 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:43:22,306 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 04:43:22,445 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:43:22,472 INFO L208 MainTranslator]: Completed translation [2020-10-27 04:43:22,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:43:22 WrapperNode [2020-10-27 04:43:22,473 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 04:43:22,475 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 04:43:22,475 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 04:43:22,475 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 04:43:22,491 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:43:22" (1/1) ... [2020-10-27 04:43:22,491 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:43:22" (1/1) ... [2020-10-27 04:43:22,519 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:43:22" (1/1) ... [2020-10-27 04:43:22,519 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:43:22" (1/1) ... [2020-10-27 04:43:22,586 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:43:22" (1/1) ... [2020-10-27 04:43:22,636 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:43:22" (1/1) ... [2020-10-27 04:43:22,650 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:43:22" (1/1) ... [2020-10-27 04:43:22,668 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 04:43:22,676 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 04:43:22,676 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 04:43:22,676 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 04:43:22,677 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:43:22" (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 04:43:22,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 04:43:22,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 04:43:22,764 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 04:43:22,765 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 04:43:22,765 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-27 04:43:22,765 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-27 04:43:22,765 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-27 04:43:22,765 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2020-10-27 04:43:22,766 INFO L138 BoogieDeclarations]: Found implementation of procedure node5 [2020-10-27 04:43:22,766 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-27 04:43:22,766 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-27 04:43:22,766 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 04:43:22,766 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-27 04:43:22,766 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 04:43:22,767 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 04:43:22,767 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 04:43:22,767 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 04:43:22,767 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 04:43:22,767 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-27 04:43:22,767 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 04:43:22,768 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 04:43:22,768 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 04:43:22,768 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 04:43:22,768 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 04:43:22,768 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 04:43:22,768 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 04:43:22,768 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 04:43:22,769 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 04:43:22,769 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-27 04:43:22,769 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 04:43:22,769 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 04:43:22,769 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 04:43:22,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 04:43:22,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 04:43:22,770 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 04:43:22,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 04:43:22,770 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 04:43:22,770 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 04:43:25,485 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 04:43:25,486 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 04:43:25,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:43:25 BoogieIcfgContainer [2020-10-27 04:43:25,492 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 04:43:25,496 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 04:43:25,496 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 04:43:25,500 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 04:43:25,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:43:21" (1/3) ... [2020-10-27 04:43:25,502 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bf12e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:43:25, skipping insertion in model container [2020-10-27 04:43:25,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:43:22" (2/3) ... [2020-10-27 04:43:25,503 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bf12e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:43:25, skipping insertion in model container [2020-10-27 04:43:25,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:43:25" (3/3) ... [2020-10-27 04:43:25,505 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.1.ufo.UNBOUNDED.pals.c [2020-10-27 04:43:25,517 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 04:43:25,523 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 04:43:25,537 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 04:43:25,584 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 04:43:25,584 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 04:43:25,584 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 04:43:25,585 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 04:43:25,585 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 04:43:25,585 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 04:43:25,585 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 04:43:25,586 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 04:43:25,632 INFO L276 IsEmpty]: Start isEmpty. Operand 766 states. [2020-10-27 04:43:25,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-27 04:43:25,672 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:43:25,673 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:43:25,673 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:43:25,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:43:25,680 INFO L82 PathProgramCache]: Analyzing trace with hash -1235716565, now seen corresponding path program 1 times [2020-10-27 04:43:25,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:43:25,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [196586913] [2020-10-27 04:43:25,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:43:26,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:43:26,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:43:27,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:43:27,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-27 04:43:27,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:43:27,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1136 [2020-10-27 04:43:27,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:43:27,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:43:27,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 145 [2020-10-27 04:43:27,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:43:27,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 04:43:28,615 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-27 04:43:28,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:43:28,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:43:28,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:43:28,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:43:28,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:43:28,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:43:28,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-27 04:43:28,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:43:28,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:43:28,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:43:28,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:43:28,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:43:28,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:43:28,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:43:28,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:43:28,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:43:28,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 04:43:28,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:43:28,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-10-27 04:43:28,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:43:28,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:43:28,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:43:28,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:43:28,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:43:29,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-27 04:43:29,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:43:29,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:43:29,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:43:29,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:43:29,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:43:29,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:43:29,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:43:29,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:43:29,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 04:43:29,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:43:29,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 04:43:29,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-27 04:43:29,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:43:29,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:43:29,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:43:29,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:43:29,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:43:29,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:43:29,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:43:29,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:43:29,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:43:29,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:43:29,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:43:29,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-27 04:43:29,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:43:29,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:43:29,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:43:29,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:43:29,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:43:29,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 04:43:29,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:43:29,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:43:29,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:43:29,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:43:29,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 04:43:29,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-27 04:43:29,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:43:29,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:43:29,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:43:29,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:43:29,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:43:29,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:43:29,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:43:29,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:43:29,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:43:29,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:43:29,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:43:29,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-27 04:43:29,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:43:29,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:43:29,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:43:29,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:43:29,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:43:29,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 04:43:29,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:43:29,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:43:29,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:43:29,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:43:29,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:43:29,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-10-27 04:43:29,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:43:29,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:43:29,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:43:29,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:43:29,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:43:29,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:43:29,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:43:29,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:43:29,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:43:29,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:43:29,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:43:29,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-27 04:43:29,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:43:29,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:43:29,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:43:29,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:43:29,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:43:29,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:43:29,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:43:29,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:43:29,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:43:29,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:43:29,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:43:29,617 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 04:43:29,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [196586913] [2020-10-27 04:43:29,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:43:29,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 04:43:29,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552712776] [2020-10-27 04:43:29,629 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 04:43:29,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:43:29,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 04:43:29,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-27 04:43:29,647 INFO L87 Difference]: Start difference. First operand 766 states. Second operand 8 states. [2020-10-27 04:43:33,043 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:43:33,883 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:43:34,832 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:43:35,782 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:43:36,658 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:43:37,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:43:37,617 INFO L93 Difference]: Finished difference Result 1054 states and 1850 transitions. [2020-10-27 04:43:37,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 04:43:37,620 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 188 [2020-10-27 04:43:37,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:43:37,661 INFO L225 Difference]: With dead ends: 1054 [2020-10-27 04:43:37,662 INFO L226 Difference]: Without dead ends: 828 [2020-10-27 04:43:37,669 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-10-27 04:43:37,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2020-10-27 04:43:37,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 758. [2020-10-27 04:43:37,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 758 states. [2020-10-27 04:43:37,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 758 states to 758 states and 1362 transitions. [2020-10-27 04:43:37,951 INFO L78 Accepts]: Start accepts. Automaton has 758 states and 1362 transitions. Word has length 188 [2020-10-27 04:43:37,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:43:37,955 INFO L481 AbstractCegarLoop]: Abstraction has 758 states and 1362 transitions. [2020-10-27 04:43:37,955 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 04:43:37,955 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states and 1362 transitions. [2020-10-27 04:43:37,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-27 04:43:37,962 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:43:37,963 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:43:37,963 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 04:43:37,963 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:43:37,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:43:37,964 INFO L82 PathProgramCache]: Analyzing trace with hash -791815891, now seen corresponding path program 1 times [2020-10-27 04:43:37,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:43:37,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1693682595] [2020-10-27 04:43:37,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:43:38,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:43:38,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:43:41,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:43:41,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-27 04:43:41,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:43:41,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3048 [2020-10-27 04:43:41,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:43:41,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:43:41,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-27 04:43:41,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:43:41,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:43:42,444 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-27 04:43:42,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:43:42,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:43:42,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:43:42,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:43:42,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:43:42,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:43:42,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 04:43:42,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:43:42,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:43:42,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:43:42,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:43:42,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:43:42,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:43:42,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:43:42,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:43:43,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:43:43,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 04:43:43,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:43:43,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 663 [2020-10-27 04:43:43,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:43:43,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:43:43,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:43:43,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-27 04:43:43,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:43:43,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-27 04:43:43,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:43:43,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:43:43,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:43:43,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:43:43,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:43:43,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:43:43,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:43:43,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:43:43,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:43:43,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:43:43,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:43:43,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-27 04:43:43,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:43:43,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:43:43,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:43:43,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:43:43,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:43:43,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:43:43,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:43:43,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:43:43,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:43:43,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:43:43,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 04:43:43,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-27 04:43:43,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:43:43,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:43:43,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:43:43,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:43:43,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:43:43,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:43:43,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:43:43,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:43:43,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:43:43,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:43:43,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:43:43,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-27 04:43:43,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:43:43,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:43:43,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:43:43,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:43:43,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:43:43,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:43:43,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:43:43,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:43:43,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:43:43,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:43:43,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:43:43,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-27 04:43:43,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:43:43,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:43:43,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:43:43,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:43:43,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:43:43,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:43:43,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:43:43,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:43:43,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:43:43,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:43:43,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:43:43,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-10-27 04:43:43,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:43:43,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:43:43,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:43:43,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:43:43,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:43:43,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:43:43,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:43:43,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:43:43,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:43:43,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:43:43,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:43:43,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-27 04:43:43,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:43:43,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:43:43,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:43:43,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:43:43,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:43:43,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:43:43,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:43:43,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:43:43,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:43:43,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:43:43,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:43:43,868 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 04:43:43,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1693682595] [2020-10-27 04:43:43,869 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:43:43,869 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-27 04:43:43,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495711277] [2020-10-27 04:43:43,873 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 04:43:43,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:43:43,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 04:43:43,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-27 04:43:43,876 INFO L87 Difference]: Start difference. First operand 758 states and 1362 transitions. Second operand 14 states. [2020-10-27 04:43:54,116 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification that was a NOOP. DAG size: 403 [2020-10-27 04:43:55,302 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification that was a NOOP. DAG size: 405 [2020-10-27 04:43:56,605 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification that was a NOOP. DAG size: 406 [2020-10-27 04:43:57,793 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 408 [2020-10-27 04:43:58,973 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:43:59,989 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:44:01,035 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:44:02,088 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:44:03,034 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:44:04,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:44:04,206 INFO L93 Difference]: Finished difference Result 1049 states and 1838 transitions. [2020-10-27 04:44:04,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 04:44:04,207 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 188 [2020-10-27 04:44:04,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:44:04,217 INFO L225 Difference]: With dead ends: 1049 [2020-10-27 04:44:04,217 INFO L226 Difference]: Without dead ends: 828 [2020-10-27 04:44:04,219 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506 [2020-10-27 04:44:04,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2020-10-27 04:44:04,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 758. [2020-10-27 04:44:04,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 758 states. [2020-10-27 04:44:04,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 758 states to 758 states and 1317 transitions. [2020-10-27 04:44:04,368 INFO L78 Accepts]: Start accepts. Automaton has 758 states and 1317 transitions. Word has length 188 [2020-10-27 04:44:04,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:44:04,369 INFO L481 AbstractCegarLoop]: Abstraction has 758 states and 1317 transitions. [2020-10-27 04:44:04,369 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 04:44:04,369 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states and 1317 transitions. [2020-10-27 04:44:04,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-10-27 04:44:04,374 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:44:04,374 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:44:04,374 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 04:44:04,375 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:44:04,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:44:04,375 INFO L82 PathProgramCache]: Analyzing trace with hash 1469118581, now seen corresponding path program 1 times [2020-10-27 04:44:04,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:44:04,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1375013170] [2020-10-27 04:44:04,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:44:04,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:44:04,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:44:05,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:44:05,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:44:08,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:44:09,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:44:09,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:44:09,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-10-27 04:44:09,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:44:09,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5073 [2020-10-27 04:44:09,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:44:09,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:44:09,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 151 [2020-10-27 04:44:09,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-27 04:44:09,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:44:10,840 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-27 04:44:10,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:44:10,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:44:10,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:44:10,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:44:10,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:44:10,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:44:10,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-27 04:44:10,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:44:10,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:44:10,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:44:10,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:44:10,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:44:10,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:44:11,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:44:11,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:44:11,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:44:11,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-27 04:44:11,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:44:11,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 303 [2020-10-27 04:44:11,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:44:11,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:44:11,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:44:11,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-27 04:44:11,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:44:11,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-10-27 04:44:11,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:44:11,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:44:11,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:44:11,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:44:11,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:44:11,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:44:11,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:44:11,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:44:11,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:44:11,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:44:11,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:44:11,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-10-27 04:44:11,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:44:11,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:44:11,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:44:11,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:44:11,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:44:11,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 04:44:11,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:44:11,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:44:11,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:44:11,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:44:11,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:44:11,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-10-27 04:44:11,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:44:11,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:44:11,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:44:11,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:44:11,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:44:11,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:44:11,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:44:11,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:44:11,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:44:11,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:44:11,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:44:11,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-10-27 04:44:11,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:44:11,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:44:11,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:44:11,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:44:11,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:44:11,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:44:11,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:44:11,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:44:11,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:44:11,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:44:11,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:44:11,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-10-27 04:44:11,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:44:11,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:44:11,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:44:11,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:44:11,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:44:11,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 04:44:11,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:44:11,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:44:11,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:44:11,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:44:11,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:44:11,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-10-27 04:44:11,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:44:11,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:44:11,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:44:11,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:44:11,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:44:11,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:44:11,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:44:11,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:44:11,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:44:11,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:44:11,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:44:11,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-27 04:44:11,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:44:11,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:44:11,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:44:11,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:44:11,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:44:11,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:44:11,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:44:11,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:44:11,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:44:11,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:44:11,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:44:11,998 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 04:44:11,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1375013170] [2020-10-27 04:44:11,999 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:44:11,999 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 04:44:11,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149400205] [2020-10-27 04:44:12,001 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 04:44:12,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:44:12,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 04:44:12,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-27 04:44:12,003 INFO L87 Difference]: Start difference. First operand 758 states and 1317 transitions. Second operand 11 states. [2020-10-27 04:44:13,139 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification that was a NOOP. DAG size: 404 [2020-10-27 04:44:20,802 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:44:21,372 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:44:22,120 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 04:44:22,569 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:44:23,470 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 04:44:24,059 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:44:24,997 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 04:44:25,573 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:44:26,431 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 04:44:27,019 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:44:29,220 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 408 [2020-10-27 04:44:29,893 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 04:44:30,252 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-27 04:44:30,772 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 04:44:30,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:44:30,933 INFO L93 Difference]: Finished difference Result 1338 states and 2270 transitions. [2020-10-27 04:44:30,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 04:44:30,933 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 232 [2020-10-27 04:44:30,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:44:30,942 INFO L225 Difference]: With dead ends: 1338 [2020-10-27 04:44:30,942 INFO L226 Difference]: Without dead ends: 1123 [2020-10-27 04:44:30,944 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=178, Invalid=472, Unknown=0, NotChecked=0, Total=650 [2020-10-27 04:44:30,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1123 states. [2020-10-27 04:44:31,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1123 to 973. [2020-10-27 04:44:31,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 973 states. [2020-10-27 04:44:31,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 973 states to 973 states and 1665 transitions. [2020-10-27 04:44:31,136 INFO L78 Accepts]: Start accepts. Automaton has 973 states and 1665 transitions. Word has length 232 [2020-10-27 04:44:31,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:44:31,137 INFO L481 AbstractCegarLoop]: Abstraction has 973 states and 1665 transitions. [2020-10-27 04:44:31,137 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 04:44:31,137 INFO L276 IsEmpty]: Start isEmpty. Operand 973 states and 1665 transitions. [2020-10-27 04:44:31,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-10-27 04:44:31,143 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:44:31,144 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:44:31,144 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 04:44:31,144 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:44:31,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:44:31,145 INFO L82 PathProgramCache]: Analyzing trace with hash 1862029261, now seen corresponding path program 1 times [2020-10-27 04:44:31,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:44:31,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2096236457] [2020-10-27 04:44:31,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:44:31,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:44:31,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:44:31,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:44:31,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:44:32,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:44:32,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:44:33,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:44:36,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:44:36,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 262 [2020-10-27 04:44:36,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:44:36,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5052 [2020-10-27 04:44:36,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:44:36,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:44:36,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:44:36,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 189 [2020-10-27 04:44:36,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:44:37,795 WARN L193 SmtUtils]: Spent 1.30 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-27 04:44:37,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:44:37,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:44:37,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:44:37,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:44:37,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:44:37,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:44:37,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 04:44:37,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:44:37,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:44:37,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:44:37,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:44:37,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:44:37,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:44:37,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:44:37,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:44:38,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:44:38,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-27 04:44:38,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:44:38,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 376 [2020-10-27 04:44:38,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:44:38,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:44:38,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:44:38,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 04:44:38,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:44:38,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-10-27 04:44:38,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:44:38,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:44:38,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:44:38,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:44:38,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:44:38,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:44:38,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:44:38,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:44:38,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:44:38,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:44:38,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:44:38,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-10-27 04:44:38,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:44:38,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:44:38,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:44:38,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 04:44:38,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:44:38,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 04:44:38,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:44:38,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:44:38,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:44:38,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 04:44:38,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:44:38,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-10-27 04:44:38,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:44:38,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:44:38,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:44:38,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:44:38,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:44:38,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:44:38,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:44:38,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:44:38,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:44:38,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:44:38,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:44:38,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-10-27 04:44:38,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:44:38,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:44:38,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:44:38,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:44:38,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:44:38,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:44:38,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:44:38,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:44:38,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:44:38,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:44:38,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:44:38,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-10-27 04:44:38,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:44:38,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:44:38,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:44:38,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:44:38,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:44:38,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:44:38,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:44:38,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:44:38,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:44:38,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:44:38,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:44:38,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2020-10-27 04:44:38,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:44:38,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:44:38,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:44:38,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:44:38,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:44:38,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:44:38,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:44:38,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:44:38,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:44:38,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:44:38,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:44:38,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2020-10-27 04:44:38,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:44:38,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:44:38,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:44:38,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:44:38,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:44:38,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:44:38,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:44:38,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:44:38,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:44:38,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:44:38,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:44:39,174 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 04:44:39,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2096236457] [2020-10-27 04:44:39,175 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:44:39,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 04:44:39,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360176876] [2020-10-27 04:44:39,176 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 04:44:39,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:44:39,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 04:44:39,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-27 04:44:39,177 INFO L87 Difference]: Start difference. First operand 973 states and 1665 transitions. Second operand 11 states. [2020-10-27 04:44:40,424 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 404 [2020-10-27 04:44:41,618 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 402 [2020-10-27 04:44:42,934 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification that was a NOOP. DAG size: 406 [2020-10-27 04:44:44,132 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification that was a NOOP. DAG size: 408 [2020-10-27 04:44:57,716 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification that was a NOOP. DAG size: 406 [2020-10-27 04:44:58,371 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:44:58,902 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:45:00,332 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:45:00,758 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:45:02,079 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:45:02,735 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:45:04,254 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:45:04,902 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:45:06,218 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:45:06,813 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:45:08,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:45:08,995 INFO L93 Difference]: Finished difference Result 3152 states and 5391 transitions. [2020-10-27 04:45:08,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 04:45:08,997 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 236 [2020-10-27 04:45:08,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:45:09,009 INFO L225 Difference]: With dead ends: 3152 [2020-10-27 04:45:09,010 INFO L226 Difference]: Without dead ends: 2201 [2020-10-27 04:45:09,013 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=165, Invalid=485, Unknown=0, NotChecked=0, Total=650 [2020-10-27 04:45:09,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2201 states. [2020-10-27 04:45:09,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2201 to 1928. [2020-10-27 04:45:09,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1928 states. [2020-10-27 04:45:09,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1928 states to 1928 states and 3273 transitions. [2020-10-27 04:45:09,373 INFO L78 Accepts]: Start accepts. Automaton has 1928 states and 3273 transitions. Word has length 236 [2020-10-27 04:45:09,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:45:09,374 INFO L481 AbstractCegarLoop]: Abstraction has 1928 states and 3273 transitions. [2020-10-27 04:45:09,374 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 04:45:09,374 INFO L276 IsEmpty]: Start isEmpty. Operand 1928 states and 3273 transitions. [2020-10-27 04:45:09,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-10-27 04:45:09,382 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:45:09,382 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:45:09,382 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 04:45:09,382 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:45:09,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:45:09,383 INFO L82 PathProgramCache]: Analyzing trace with hash 1489931172, now seen corresponding path program 1 times [2020-10-27 04:45:09,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:45:09,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2119583992] [2020-10-27 04:45:09,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:45:09,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:45:09,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:45:09,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:45:10,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:45:10,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:45:10,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:45:11,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:45:14,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:45:14,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-27 04:45:14,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:45:14,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5082 [2020-10-27 04:45:14,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:45:14,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:45:14,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:45:14,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-10-27 04:45:14,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:45:15,911 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-27 04:45:15,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:45:15,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:45:15,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:45:15,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:45:15,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:45:15,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:45:15,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 04:45:15,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:45:15,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:45:15,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:45:15,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:45:15,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:45:15,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:45:16,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:45:16,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:45:16,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:45:16,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-27 04:45:16,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:45:16,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 368 [2020-10-27 04:45:16,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:45:16,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:45:16,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:45:16,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 04:45:16,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:45:16,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-10-27 04:45:16,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:45:16,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:45:16,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:45:16,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:45:16,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:45:16,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:45:16,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:45:16,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:45:16,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:45:16,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:45:16,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:45:16,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-10-27 04:45:16,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:45:16,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:45:16,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:45:16,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 04:45:16,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:45:16,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 04:45:16,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:45:16,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:45:16,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:45:16,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 04:45:16,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:45:16,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-10-27 04:45:16,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:45:16,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:45:16,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:45:16,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:45:16,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:45:16,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:45:16,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:45:16,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:45:16,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:45:16,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:45:16,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:45:16,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-10-27 04:45:16,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:45:16,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:45:16,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:45:16,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:45:16,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:45:16,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:45:16,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:45:16,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:45:16,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:45:16,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:45:16,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:45:16,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2020-10-27 04:45:16,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:45:16,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:45:16,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:45:16,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:45:16,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:45:16,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:45:16,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:45:16,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:45:16,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:45:16,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:45:16,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:45:16,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-10-27 04:45:17,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:45:17,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:45:17,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:45:17,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:45:17,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:45:17,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:45:17,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:45:17,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:45:17,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:45:17,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:45:17,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:45:17,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-10-27 04:45:17,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:45:17,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:45:17,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:45:17,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:45:17,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:45:17,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:45:17,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:45:17,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:45:17,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:45:17,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:45:17,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:45:17,211 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 04:45:17,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2119583992] [2020-10-27 04:45:17,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:45:17,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 04:45:17,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54283806] [2020-10-27 04:45:17,213 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 04:45:17,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:45:17,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 04:45:17,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-27 04:45:17,214 INFO L87 Difference]: Start difference. First operand 1928 states and 3273 transitions. Second operand 11 states. [2020-10-27 04:45:18,465 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification that was a NOOP. DAG size: 404 [2020-10-27 04:45:19,670 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification that was a NOOP. DAG size: 410 [2020-10-27 04:45:20,994 WARN L193 SmtUtils]: Spent 1.22 s on a formula simplification that was a NOOP. DAG size: 414 [2020-10-27 04:45:24,877 WARN L193 SmtUtils]: Spent 2.42 s on a formula simplification. DAG size of input: 412 DAG size of output: 408 [2020-10-27 04:45:44,255 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 406 [2020-10-27 04:45:45,015 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:45:45,551 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:45:46,526 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:45:47,614 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:45:48,096 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:45:48,766 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:45:49,962 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:45:50,644 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:45:51,386 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:45:52,651 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:45:53,350 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:45:53,999 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:45:55,144 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:45:55,832 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:45:56,547 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:45:58,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:45:58,951 INFO L93 Difference]: Finished difference Result 7724 states and 13126 transitions. [2020-10-27 04:45:58,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 04:45:58,953 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 237 [2020-10-27 04:45:58,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:45:58,984 INFO L225 Difference]: With dead ends: 7724 [2020-10-27 04:45:58,985 INFO L226 Difference]: Without dead ends: 5907 [2020-10-27 04:45:58,991 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 13.7s TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930 [2020-10-27 04:45:58,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5907 states. [2020-10-27 04:45:59,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5907 to 5241. [2020-10-27 04:45:59,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5241 states. [2020-10-27 04:45:59,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5241 states to 5241 states and 8892 transitions. [2020-10-27 04:45:59,981 INFO L78 Accepts]: Start accepts. Automaton has 5241 states and 8892 transitions. Word has length 237 [2020-10-27 04:45:59,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:45:59,981 INFO L481 AbstractCegarLoop]: Abstraction has 5241 states and 8892 transitions. [2020-10-27 04:45:59,981 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 04:45:59,982 INFO L276 IsEmpty]: Start isEmpty. Operand 5241 states and 8892 transitions. [2020-10-27 04:45:59,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-10-27 04:45:59,998 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:45:59,998 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:45:59,999 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 04:45:59,999 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:45:59,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:45:59,999 INFO L82 PathProgramCache]: Analyzing trace with hash 1014229938, now seen corresponding path program 1 times [2020-10-27 04:45:59,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:46:00,000 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2011957909] [2020-10-27 04:46:00,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:46:00,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:00,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:00,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:00,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:01,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:01,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:02,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:05,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:05,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 264 [2020-10-27 04:46:05,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:46:05,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 04:46:05,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:05,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:46:05,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:46:05,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-10-27 04:46:05,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:46:06,395 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-27 04:46:06,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:46:06,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:06,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:06,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:06,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:46:06,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:06,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 04:46:06,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:06,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:46:06,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:46:06,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:46:06,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:46:06,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:46:06,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:06,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:06,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:06,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-27 04:46:06,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:06,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 368 [2020-10-27 04:46:06,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:06,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:46:06,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:46:06,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 04:46:06,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:46:07,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-10-27 04:46:07,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:07,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:07,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:07,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:46:07,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:07,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:46:07,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:07,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:46:07,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:46:07,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:46:07,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:46:07,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-10-27 04:46:07,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:07,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:07,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:07,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 04:46:07,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:07,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:46:07,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:07,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:46:07,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:46:07,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:46:07,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:46:07,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-27 04:46:07,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:07,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:07,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:07,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:46:07,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:07,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:46:07,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:07,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:46:07,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:46:07,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:46:07,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:46:07,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-27 04:46:07,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:07,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:07,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:07,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:46:07,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:07,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:46:07,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:07,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:46:07,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:46:07,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:46:07,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:46:07,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-27 04:46:07,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:07,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:07,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:07,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:46:07,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:07,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:46:07,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:07,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:46:07,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:46:07,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:46:07,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:46:07,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-10-27 04:46:07,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:07,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:07,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:07,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:46:07,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:07,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:46:07,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:07,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:46:07,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:46:07,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:46:07,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:46:07,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2020-10-27 04:46:07,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:07,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:07,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:07,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:46:07,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:07,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:46:07,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:07,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:46:07,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:46:07,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:46:07,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:46:07,571 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 04:46:07,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2011957909] [2020-10-27 04:46:07,572 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:46:07,572 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 04:46:07,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355745985] [2020-10-27 04:46:07,572 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 04:46:07,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:46:07,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 04:46:07,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-27 04:46:07,573 INFO L87 Difference]: Start difference. First operand 5241 states and 8892 transitions. Second operand 11 states. [2020-10-27 04:46:08,860 WARN L193 SmtUtils]: Spent 1.19 s on a formula simplification that was a NOOP. DAG size: 404 [2020-10-27 04:46:10,088 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification that was a NOOP. DAG size: 411 [2020-10-27 04:46:11,314 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification that was a NOOP. DAG size: 414 [2020-10-27 04:46:15,832 WARN L193 SmtUtils]: Spent 2.43 s on a formula simplification. DAG size of input: 413 DAG size of output: 411 [2020-10-27 04:46:36,782 WARN L193 SmtUtils]: Spent 1.22 s on a formula simplification that was a NOOP. DAG size: 406 [2020-10-27 04:46:37,621 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:46:38,148 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:46:39,074 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:46:40,353 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:46:40,840 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:46:41,326 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:46:42,724 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:46:43,409 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:46:43,929 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:46:45,451 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:46:46,173 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:46:46,616 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:46:48,062 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:46:48,790 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:46:49,311 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:46:52,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:46:52,229 INFO L93 Difference]: Finished difference Result 20892 states and 35425 transitions. [2020-10-27 04:46:52,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 04:46:52,231 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 238 [2020-10-27 04:46:52,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:46:52,307 INFO L225 Difference]: With dead ends: 20892 [2020-10-27 04:46:52,307 INFO L226 Difference]: Without dead ends: 16000 [2020-10-27 04:46:52,325 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 14.1s TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930 [2020-10-27 04:46:52,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16000 states. [2020-10-27 04:46:54,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16000 to 14386. [2020-10-27 04:46:54,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14386 states. [2020-10-27 04:46:54,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14386 states to 14386 states and 24333 transitions. [2020-10-27 04:46:54,971 INFO L78 Accepts]: Start accepts. Automaton has 14386 states and 24333 transitions. Word has length 238 [2020-10-27 04:46:54,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:46:54,971 INFO L481 AbstractCegarLoop]: Abstraction has 14386 states and 24333 transitions. [2020-10-27 04:46:54,971 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 04:46:54,972 INFO L276 IsEmpty]: Start isEmpty. Operand 14386 states and 24333 transitions. [2020-10-27 04:46:55,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-10-27 04:46:55,011 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:46:55,011 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:46:55,011 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 04:46:55,011 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:46:55,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:46:55,012 INFO L82 PathProgramCache]: Analyzing trace with hash -158726650, now seen corresponding path program 1 times [2020-10-27 04:46:55,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:46:55,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [337555127] [2020-10-27 04:46:55,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:46:55,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:55,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:55,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:55,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:55,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:56,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:56,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:56,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:00,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:47:00,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 265 [2020-10-27 04:47:00,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 04:47:00,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-27 04:47:00,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:47:00,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:47:00,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:47:00,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-10-27 04:47:00,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:47:01,360 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-27 04:47:01,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:47:01,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:47:01,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:01,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:47:01,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:47:01,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:47:01,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 04:47:01,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:47:01,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:47:01,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:47:01,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:47:01,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:47:01,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:47:01,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:47:01,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:01,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:47:01,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-27 04:47:01,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:47:01,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-10-27 04:47:01,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:47:01,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:47:01,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:47:01,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 04:47:01,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:47:01,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-10-27 04:47:01,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:47:01,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:01,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:47:01,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:47:01,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:47:01,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:47:01,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:47:01,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:47:01,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:47:01,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:47:01,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:47:01,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-10-27 04:47:01,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:47:01,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:01,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:47:01,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 04:47:01,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:47:01,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:47:01,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:47:01,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:47:01,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:47:01,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 04:47:01,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:47:01,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-10-27 04:47:01,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:47:01,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:01,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:47:01,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:47:01,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:47:01,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:47:01,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:47:01,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:47:01,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:47:01,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:47:01,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:47:02,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-10-27 04:47:02,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:47:02,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:02,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:47:02,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:47:02,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:47:02,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:47:02,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:47:02,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:47:02,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:47:02,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:47:02,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:47:02,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-10-27 04:47:02,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:47:02,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:02,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:47:02,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:47:02,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:47:02,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:47:02,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:47:02,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:47:02,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:47:02,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:47:02,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 66 [2020-10-27 04:47:02,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2020-10-27 04:47:02,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:47:02,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:02,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:47:02,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:47:02,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:47:02,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:47:02,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:47:02,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:47:02,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:47:02,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:47:02,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:47:02,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-27 04:47:02,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:47:02,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:02,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:47:02,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:47:02,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:47:02,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:47:02,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:47:02,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:47:02,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:47:02,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:47:02,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:47:02,408 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 04:47:02,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [337555127] [2020-10-27 04:47:02,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:47:02,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 04:47:02,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575441152] [2020-10-27 04:47:02,409 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 04:47:02,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:47:02,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 04:47:02,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-27 04:47:02,411 INFO L87 Difference]: Start difference. First operand 14386 states and 24333 transitions. Second operand 11 states.