/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=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 00:36:29,869 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 00:36:29,874 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 00:36:29,936 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 00:36:29,936 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 00:36:29,944 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 00:36:29,946 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 00:36:29,951 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 00:36:29,954 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 00:36:29,960 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 00:36:29,962 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 00:36:29,964 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 00:36:29,964 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 00:36:29,967 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 00:36:29,971 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 00:36:29,974 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 00:36:29,975 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 00:36:29,979 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 00:36:29,988 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 00:36:30,001 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 00:36:30,006 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 00:36:30,008 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 00:36:30,009 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 00:36:30,012 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 00:36:30,023 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 00:36:30,024 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 00:36:30,024 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 00:36:30,026 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 00:36:30,027 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 00:36:30,029 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 00:36:30,030 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 00:36:30,031 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 00:36:30,033 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 00:36:30,034 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 00:36:30,035 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 00:36:30,035 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 00:36:30,036 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 00:36:30,036 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 00:36:30,036 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 00:36:30,037 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 00:36:30,038 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 00:36:30,046 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 00:36:30,097 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 00:36:30,098 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 00:36:30,103 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 00:36:30,103 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 00:36:30,103 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 00:36:30,104 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 00:36:30,104 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 00:36:30,104 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 00:36:30,104 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 00:36:30,104 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 00:36:30,106 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 00:36:30,106 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 00:36:30,107 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 00:36:30,107 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 00:36:30,107 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 00:36:30,107 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 00:36:30,107 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 00:36:30,108 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 00:36:30,108 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 00:36:30,109 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 00:36:30,110 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 00:36:30,115 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 00:36:30,115 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 00:36:30,115 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 00:36:30,115 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 00:36:30,116 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 00:36:30,116 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 00:36:30,118 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 00:36:30,118 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 00:36:30,119 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-28 00:36:30,577 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 00:36:30,617 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 00:36:30,621 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 00:36:30,623 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 00:36:30,623 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 00:36:30,624 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-28 00:36:30,724 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/77d43f4ad/04c72fa3096f4b4aa120378d692686b5/FLAGaa35dca54 [2020-10-28 00:36:31,583 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 00:36:31,587 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-28 00:36:31,608 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/77d43f4ad/04c72fa3096f4b4aa120378d692686b5/FLAGaa35dca54 [2020-10-28 00:36:31,816 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/77d43f4ad/04c72fa3096f4b4aa120378d692686b5 [2020-10-28 00:36:31,819 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 00:36:31,828 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 00:36:31,833 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 00:36:31,833 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 00:36:31,838 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 00:36:31,840 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:36:31" (1/1) ... [2020-10-28 00:36:31,850 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bff91e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:36:31, skipping insertion in model container [2020-10-28 00:36:31,851 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:36:31" (1/1) ... [2020-10-28 00:36:31,861 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 00:36:31,957 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 00:36:32,451 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 00:36:32,466 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 00:36:32,603 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 00:36:32,657 INFO L208 MainTranslator]: Completed translation [2020-10-28 00:36:32,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:36:32 WrapperNode [2020-10-28 00:36:32,667 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 00:36:32,668 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 00:36:32,668 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 00:36:32,669 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 00:36:32,692 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:36:32" (1/1) ... [2020-10-28 00:36:32,693 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:36:32" (1/1) ... [2020-10-28 00:36:32,713 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:36:32" (1/1) ... [2020-10-28 00:36:32,713 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:36:32" (1/1) ... [2020-10-28 00:36:32,748 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:36:32" (1/1) ... [2020-10-28 00:36:32,785 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:36:32" (1/1) ... [2020-10-28 00:36:32,793 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:36:32" (1/1) ... [2020-10-28 00:36:32,804 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 00:36:32,805 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 00:36:32,805 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 00:36:32,806 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 00:36:32,807 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:36:32" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 00:36:32,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 00:36:32,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 00:36:32,917 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 00:36:32,917 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 00:36:32,917 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 00:36:32,918 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 00:36:32,918 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 00:36:32,918 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 00:36:32,919 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 00:36:32,919 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 00:36:32,920 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-28 00:36:32,920 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 00:36:32,921 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 00:36:32,921 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 00:36:32,921 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 00:36:32,924 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 00:36:32,924 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 00:36:32,924 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 00:36:32,924 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 00:36:32,924 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-28 00:36:32,924 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 00:36:32,925 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 00:36:32,925 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 00:36:32,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 00:36:32,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 00:36:32,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 00:36:32,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 00:36:32,926 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 00:36:32,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 00:36:34,711 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 00:36:34,712 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 00:36:34,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:36:34 BoogieIcfgContainer [2020-10-28 00:36:34,714 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 00:36:34,716 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 00:36:34,717 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 00:36:34,720 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 00:36:34,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:36:31" (1/3) ... [2020-10-28 00:36:34,721 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77683680 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:36:34, skipping insertion in model container [2020-10-28 00:36:34,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:36:32" (2/3) ... [2020-10-28 00:36:34,722 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77683680 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:36:34, skipping insertion in model container [2020-10-28 00:36:34,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:36:34" (3/3) ... [2020-10-28 00:36:34,724 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-28 00:36:34,736 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 00:36:34,742 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 00:36:34,756 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 00:36:34,788 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 00:36:34,788 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 00:36:34,788 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 00:36:34,789 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 00:36:34,789 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 00:36:34,789 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 00:36:34,789 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 00:36:34,789 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 00:36:34,831 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states. [2020-10-28 00:36:34,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-28 00:36:34,869 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:36:34,872 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] [2020-10-28 00:36:34,873 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:36:34,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:36:34,889 INFO L82 PathProgramCache]: Analyzing trace with hash -561736880, now seen corresponding path program 1 times [2020-10-28 00:36:34,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:36:34,900 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [712045007] [2020-10-28 00:36:34,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:36:35,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:36:35,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:35,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:36,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:37,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:38,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:40,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:36:40,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-28 00:36:40,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 00:36:40,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5087 [2020-10-28 00:36:40,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:36:40,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 00:36:40,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-28 00:36:40,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 00:36:40,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 00:36:41,462 WARN L193 SmtUtils]: Spent 692.00 ms on a formula simplification that was a NOOP. DAG size: 289 [2020-10-28 00:36:41,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:36:41,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:36:41,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:41,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:36:41,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:36:41,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:36:41,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-28 00:36:41,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:36:41,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:36:41,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:36:41,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:36:41,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:36:41,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:36:41,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [712045007] [2020-10-28 00:36:41,588 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:36:41,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 00:36:41,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111192173] [2020-10-28 00:36:41,594 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 00:36:41,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:36:41,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 00:36:41,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-28 00:36:41,612 INFO L87 Difference]: Start difference. First operand 359 states. Second operand 7 states. [2020-10-28 00:36:42,399 WARN L193 SmtUtils]: Spent 676.00 ms on a formula simplification that was a NOOP. DAG size: 297 [2020-10-28 00:36:46,303 WARN L193 SmtUtils]: Spent 706.00 ms on a formula simplification that was a NOOP. DAG size: 293 [2020-10-28 00:36:46,997 WARN L193 SmtUtils]: Spent 646.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-28 00:36:47,689 WARN L193 SmtUtils]: Spent 660.00 ms on a formula simplification that was a NOOP. DAG size: 291 [2020-10-28 00:36:48,534 WARN L193 SmtUtils]: Spent 648.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-28 00:36:49,256 WARN L193 SmtUtils]: Spent 664.00 ms on a formula simplification that was a NOOP. DAG size: 293 [2020-10-28 00:36:49,928 WARN L193 SmtUtils]: Spent 627.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-28 00:36:50,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:36:50,056 INFO L93 Difference]: Finished difference Result 1619 states and 2742 transitions. [2020-10-28 00:36:50,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 00:36:50,058 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 123 [2020-10-28 00:36:50,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:36:50,094 INFO L225 Difference]: With dead ends: 1619 [2020-10-28 00:36:50,095 INFO L226 Difference]: Without dead ends: 1437 [2020-10-28 00:36:50,102 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2020-10-28 00:36:50,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1437 states. [2020-10-28 00:36:50,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1437 to 504. [2020-10-28 00:36:50,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 504 states. [2020-10-28 00:36:50,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 833 transitions. [2020-10-28 00:36:50,243 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 833 transitions. Word has length 123 [2020-10-28 00:36:50,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:36:50,244 INFO L481 AbstractCegarLoop]: Abstraction has 504 states and 833 transitions. [2020-10-28 00:36:50,245 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 00:36:50,245 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 833 transitions. [2020-10-28 00:36:50,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-28 00:36:50,248 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:36:50,248 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] [2020-10-28 00:36:50,249 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 00:36:50,249 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:36:50,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:36:50,250 INFO L82 PathProgramCache]: Analyzing trace with hash 2008777545, now seen corresponding path program 1 times [2020-10-28 00:36:50,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:36:50,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [952884540] [2020-10-28 00:36:50,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:36:50,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:36:50,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:50,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:50,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:51,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:51,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:52,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:55,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:36:55,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 00:36:55,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 00:36:55,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-28 00:36:55,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:36:55,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 00:36:55,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-28 00:36:55,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 00:36:55,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:36:56,123 WARN L193 SmtUtils]: Spent 599.00 ms on a formula simplification that was a NOOP. DAG size: 289 [2020-10-28 00:36:56,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:36:56,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:36:56,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:56,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:36:56,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:36:56,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:36:56,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 00:36:56,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:36:56,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:36:56,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:36:56,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:36:56,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:36:56,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:36:56,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [952884540] [2020-10-28 00:36:56,207 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:36:56,207 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-28 00:36:56,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334784699] [2020-10-28 00:36:56,209 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 00:36:56,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:36:56,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 00:36:56,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-28 00:36:56,212 INFO L87 Difference]: Start difference. First operand 504 states and 833 transitions. Second operand 8 states. [2020-10-28 00:36:57,010 WARN L193 SmtUtils]: Spent 707.00 ms on a formula simplification that was a NOOP. DAG size: 299 [2020-10-28 00:37:00,472 WARN L193 SmtUtils]: Spent 670.00 ms on a formula simplification that was a NOOP. DAG size: 293 [2020-10-28 00:37:01,317 WARN L193 SmtUtils]: Spent 755.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-28 00:37:01,987 WARN L193 SmtUtils]: Spent 635.00 ms on a formula simplification that was a NOOP. DAG size: 291 [2020-10-28 00:37:02,713 WARN L193 SmtUtils]: Spent 687.00 ms on a formula simplification that was a NOOP. DAG size: 296 [2020-10-28 00:37:03,529 WARN L193 SmtUtils]: Spent 676.00 ms on a formula simplification that was a NOOP. DAG size: 296 [2020-10-28 00:37:04,300 WARN L193 SmtUtils]: Spent 660.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2020-10-28 00:37:04,981 WARN L193 SmtUtils]: Spent 651.00 ms on a formula simplification that was a NOOP. DAG size: 294 [2020-10-28 00:37:06,216 WARN L193 SmtUtils]: Spent 661.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2020-10-28 00:37:07,042 WARN L193 SmtUtils]: Spent 717.00 ms on a formula simplification that was a NOOP. DAG size: 296 [2020-10-28 00:37:08,273 WARN L193 SmtUtils]: Spent 635.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-28 00:37:08,961 WARN L193 SmtUtils]: Spent 621.00 ms on a formula simplification that was a NOOP. DAG size: 293 [2020-10-28 00:37:08,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:37:08,993 INFO L93 Difference]: Finished difference Result 3768 states and 6286 transitions. [2020-10-28 00:37:08,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-28 00:37:08,994 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 124 [2020-10-28 00:37:08,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:37:09,021 INFO L225 Difference]: With dead ends: 3768 [2020-10-28 00:37:09,022 INFO L226 Difference]: Without dead ends: 3461 [2020-10-28 00:37:09,029 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=257, Invalid=673, Unknown=0, NotChecked=0, Total=930 [2020-10-28 00:37:09,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3461 states. [2020-10-28 00:37:09,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3461 to 1341. [2020-10-28 00:37:09,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1341 states. [2020-10-28 00:37:09,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1341 states to 1341 states and 2234 transitions. [2020-10-28 00:37:09,186 INFO L78 Accepts]: Start accepts. Automaton has 1341 states and 2234 transitions. Word has length 124 [2020-10-28 00:37:09,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:37:09,190 INFO L481 AbstractCegarLoop]: Abstraction has 1341 states and 2234 transitions. [2020-10-28 00:37:09,190 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 00:37:09,191 INFO L276 IsEmpty]: Start isEmpty. Operand 1341 states and 2234 transitions. [2020-10-28 00:37:09,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-28 00:37:09,196 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:37:09,196 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] [2020-10-28 00:37:09,197 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 00:37:09,197 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:37:09,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:37:09,201 INFO L82 PathProgramCache]: Analyzing trace with hash 231644809, now seen corresponding path program 1 times [2020-10-28 00:37:09,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:37:09,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [148304541] [2020-10-28 00:37:09,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:37:09,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:37:09,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:09,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:09,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:10,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:10,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:10,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:14,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:37:14,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-28 00:37:14,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 00:37:14,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5058 [2020-10-28 00:37:14,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:37:14,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:37:14,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-28 00:37:14,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-28 00:37:14,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:37:15,045 WARN L193 SmtUtils]: Spent 568.00 ms on a formula simplification that was a NOOP. DAG size: 289 [2020-10-28 00:37:15,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:37:15,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:37:15,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:15,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:37:15,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:37:15,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:37:15,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 00:37:15,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:37:15,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:37:15,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:37:15,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:37:15,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:37:15,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:37:15,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [148304541] [2020-10-28 00:37:15,121 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:37:15,121 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:37:15,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332545813] [2020-10-28 00:37:15,122 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:37:15,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:37:15,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:37:15,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:37:15,124 INFO L87 Difference]: Start difference. First operand 1341 states and 2234 transitions. Second operand 5 states. [2020-10-28 00:37:15,840 WARN L193 SmtUtils]: Spent 626.00 ms on a formula simplification that was a NOOP. DAG size: 293 [2020-10-28 00:37:18,616 WARN L193 SmtUtils]: Spent 611.00 ms on a formula simplification that was a NOOP. DAG size: 291 [2020-10-28 00:37:18,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:37:18,796 INFO L93 Difference]: Finished difference Result 4479 states and 7490 transitions. [2020-10-28 00:37:18,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 00:37:18,797 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2020-10-28 00:37:18,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:37:18,819 INFO L225 Difference]: With dead ends: 4479 [2020-10-28 00:37:18,823 INFO L226 Difference]: Without dead ends: 3449 [2020-10-28 00:37:18,827 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-28 00:37:18,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3449 states. [2020-10-28 00:37:19,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3449 to 2409. [2020-10-28 00:37:19,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2409 states. [2020-10-28 00:37:19,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2409 states to 2409 states and 4020 transitions. [2020-10-28 00:37:19,025 INFO L78 Accepts]: Start accepts. Automaton has 2409 states and 4020 transitions. Word has length 125 [2020-10-28 00:37:19,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:37:19,027 INFO L481 AbstractCegarLoop]: Abstraction has 2409 states and 4020 transitions. [2020-10-28 00:37:19,027 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:37:19,027 INFO L276 IsEmpty]: Start isEmpty. Operand 2409 states and 4020 transitions. [2020-10-28 00:37:19,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-28 00:37:19,037 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:37:19,037 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] [2020-10-28 00:37:19,038 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 00:37:19,038 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:37:19,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:37:19,039 INFO L82 PathProgramCache]: Analyzing trace with hash 1116403554, now seen corresponding path program 1 times [2020-10-28 00:37:19,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:37:19,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2003800494] [2020-10-28 00:37:19,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:37:19,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:37:19,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:19,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:19,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:20,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:20,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:20,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:24,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:37:24,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-28 00:37:24,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 00:37:24,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-28 00:37:24,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:37:24,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:37:24,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-28 00:37:24,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-28 00:37:24,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 00:37:24,821 WARN L193 SmtUtils]: Spent 566.00 ms on a formula simplification that was a NOOP. DAG size: 289 [2020-10-28 00:37:24,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:37:24,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:37:24,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:24,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:37:24,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:37:24,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:37:24,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 00:37:24,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:37:24,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:37:24,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:37:24,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:37:24,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:37:24,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:37:24,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2003800494] [2020-10-28 00:37:24,932 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:37:24,932 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:37:24,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369931717] [2020-10-28 00:37:24,932 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:37:24,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:37:24,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:37:24,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:37:24,933 INFO L87 Difference]: Start difference. First operand 2409 states and 4020 transitions. Second operand 5 states. [2020-10-28 00:37:25,592 WARN L193 SmtUtils]: Spent 597.00 ms on a formula simplification that was a NOOP. DAG size: 293 [2020-10-28 00:37:28,421 WARN L193 SmtUtils]: Spent 746.00 ms on a formula simplification that was a NOOP. DAG size: 291 [2020-10-28 00:37:28,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:37:28,719 INFO L93 Difference]: Finished difference Result 8587 states and 14358 transitions. [2020-10-28 00:37:28,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 00:37:28,719 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2020-10-28 00:37:28,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:37:28,759 INFO L225 Difference]: With dead ends: 8587 [2020-10-28 00:37:28,759 INFO L226 Difference]: Without dead ends: 6537 [2020-10-28 00:37:28,766 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-28 00:37:28,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6537 states. [2020-10-28 00:37:29,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6537 to 4470. [2020-10-28 00:37:29,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4470 states. [2020-10-28 00:37:29,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4470 states to 4470 states and 7460 transitions. [2020-10-28 00:37:29,125 INFO L78 Accepts]: Start accepts. Automaton has 4470 states and 7460 transitions. Word has length 126 [2020-10-28 00:37:29,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:37:29,126 INFO L481 AbstractCegarLoop]: Abstraction has 4470 states and 7460 transitions. [2020-10-28 00:37:29,126 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:37:29,126 INFO L276 IsEmpty]: Start isEmpty. Operand 4470 states and 7460 transitions. [2020-10-28 00:37:29,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-28 00:37:29,129 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:37:29,129 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] [2020-10-28 00:37:29,130 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 00:37:29,130 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:37:29,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:37:29,130 INFO L82 PathProgramCache]: Analyzing trace with hash -1379547710, now seen corresponding path program 1 times [2020-10-28 00:37:29,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:37:29,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [149294571] [2020-10-28 00:37:29,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:37:29,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:37:29,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:29,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:29,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:29,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:30,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:30,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:34,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:37:34,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-28 00:37:34,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 00:37:34,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-28 00:37:34,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:37:34,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:37:34,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-28 00:37:34,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-28 00:37:34,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:37:35,075 WARN L193 SmtUtils]: Spent 768.00 ms on a formula simplification that was a NOOP. DAG size: 289 [2020-10-28 00:37:35,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:37:35,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:37:35,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:35,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:37:35,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:37:35,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:37:35,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 00:37:35,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:37:35,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:37:35,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:37:35,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:37:35,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:37:35,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:37:35,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [149294571] [2020-10-28 00:37:35,158 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:37:35,158 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:37:35,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789783304] [2020-10-28 00:37:35,159 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:37:35,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:37:35,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:37:35,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:37:35,160 INFO L87 Difference]: Start difference. First operand 4470 states and 7460 transitions. Second operand 5 states. [2020-10-28 00:37:35,899 WARN L193 SmtUtils]: Spent 672.00 ms on a formula simplification that was a NOOP. DAG size: 293 [2020-10-28 00:37:38,619 WARN L193 SmtUtils]: Spent 637.00 ms on a formula simplification that was a NOOP. DAG size: 291 [2020-10-28 00:37:39,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:37:39,078 INFO L93 Difference]: Finished difference Result 16719 states and 27926 transitions. [2020-10-28 00:37:39,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 00:37:39,079 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2020-10-28 00:37:39,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:37:39,156 INFO L225 Difference]: With dead ends: 16719 [2020-10-28 00:37:39,157 INFO L226 Difference]: Without dead ends: 12636 [2020-10-28 00:37:39,172 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-28 00:37:39,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12636 states. [2020-10-28 00:37:39,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12636 to 8522. [2020-10-28 00:37:39,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8522 states. [2020-10-28 00:37:39,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8522 states to 8522 states and 14208 transitions. [2020-10-28 00:37:39,875 INFO L78 Accepts]: Start accepts. Automaton has 8522 states and 14208 transitions. Word has length 127 [2020-10-28 00:37:39,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:37:39,880 INFO L481 AbstractCegarLoop]: Abstraction has 8522 states and 14208 transitions. [2020-10-28 00:37:39,880 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:37:39,880 INFO L276 IsEmpty]: Start isEmpty. Operand 8522 states and 14208 transitions. [2020-10-28 00:37:39,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-28 00:37:39,884 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:37:39,884 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] [2020-10-28 00:37:39,884 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 00:37:39,885 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:37:39,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:37:39,885 INFO L82 PathProgramCache]: Analyzing trace with hash -1861248334, now seen corresponding path program 1 times [2020-10-28 00:37:39,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:37:39,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [30635328] [2020-10-28 00:37:39,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:37:39,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:37:40,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:40,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:40,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:40,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:41,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:44,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:37:44,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-28 00:37:44,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 00:37:44,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4824 [2020-10-28 00:37:44,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:37:44,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 00:37:44,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-28 00:37:44,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-28 00:37:44,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:37:45,586 WARN L193 SmtUtils]: Spent 593.00 ms on a formula simplification that was a NOOP. DAG size: 289 [2020-10-28 00:37:45,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:37:45,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:37:45,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:45,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:37:45,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:37:45,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:37:45,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 00:37:45,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:37:45,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:37:45,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:37:45,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:37:45,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:37:45,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:37:45,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [30635328] [2020-10-28 00:37:45,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:37:45,685 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 00:37:45,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324995728] [2020-10-28 00:37:45,686 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 00:37:45,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:37:45,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 00:37:45,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-28 00:37:45,687 INFO L87 Difference]: Start difference. First operand 8522 states and 14208 transitions. Second operand 7 states. [2020-10-28 00:37:46,529 WARN L193 SmtUtils]: Spent 759.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-28 00:37:49,725 WARN L193 SmtUtils]: Spent 692.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-28 00:37:50,510 WARN L193 SmtUtils]: Spent 735.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2020-10-28 00:37:51,190 WARN L193 SmtUtils]: Spent 641.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-28 00:37:52,152 WARN L193 SmtUtils]: Spent 706.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2020-10-28 00:37:52,895 WARN L193 SmtUtils]: Spent 709.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-28 00:37:53,593 WARN L193 SmtUtils]: Spent 649.00 ms on a formula simplification that was a NOOP. DAG size: 293 [2020-10-28 00:37:54,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:37:54,623 INFO L93 Difference]: Finished difference Result 29014 states and 48400 transitions. [2020-10-28 00:37:54,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 00:37:54,624 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 129 [2020-10-28 00:37:54,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:37:54,689 INFO L225 Difference]: With dead ends: 29014 [2020-10-28 00:37:54,689 INFO L226 Difference]: Without dead ends: 20879 [2020-10-28 00:37:54,722 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2020-10-28 00:37:54,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20879 states. [2020-10-28 00:37:55,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20879 to 8522. [2020-10-28 00:37:55,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8522 states. [2020-10-28 00:37:55,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8522 states to 8522 states and 14192 transitions. [2020-10-28 00:37:55,594 INFO L78 Accepts]: Start accepts. Automaton has 8522 states and 14192 transitions. Word has length 129 [2020-10-28 00:37:55,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:37:55,594 INFO L481 AbstractCegarLoop]: Abstraction has 8522 states and 14192 transitions. [2020-10-28 00:37:55,594 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 00:37:55,595 INFO L276 IsEmpty]: Start isEmpty. Operand 8522 states and 14192 transitions. [2020-10-28 00:37:55,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-28 00:37:55,598 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:37:55,598 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] [2020-10-28 00:37:55,598 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 00:37:55,599 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:37:55,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:37:55,599 INFO L82 PathProgramCache]: Analyzing trace with hash 1499033117, now seen corresponding path program 1 times [2020-10-28 00:37:55,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:37:55,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [652166404] [2020-10-28 00:37:55,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:37:55,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:37:55,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:55,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:55,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:55,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:56,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:56,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:57,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:00,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:38:00,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-28 00:38:00,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 00:38:00,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 00:38:00,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:38:00,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:38:00,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-28 00:38:00,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 00:38:00,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:38:01,425 WARN L193 SmtUtils]: Spent 692.00 ms on a formula simplification that was a NOOP. DAG size: 289 [2020-10-28 00:38:01,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:38:01,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:38:01,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:01,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:38:01,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:38:01,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:38:01,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 00:38:01,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:38:01,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:38:01,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:38:01,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:38:01,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:38:01,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:38:01,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [652166404] [2020-10-28 00:38:01,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:38:01,495 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:38:01,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876352285] [2020-10-28 00:38:01,495 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:38:01,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:38:01,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:38:01,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:38:01,496 INFO L87 Difference]: Start difference. First operand 8522 states and 14192 transitions. Second operand 4 states. [2020-10-28 00:38:02,278 WARN L193 SmtUtils]: Spent 728.00 ms on a formula simplification that was a NOOP. DAG size: 293 [2020-10-28 00:38:05,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:38:05,693 INFO L93 Difference]: Finished difference Result 23054 states and 38378 transitions. [2020-10-28 00:38:05,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:38:05,694 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 130 [2020-10-28 00:38:05,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:38:05,730 INFO L225 Difference]: With dead ends: 23054 [2020-10-28 00:38:05,730 INFO L226 Difference]: Without dead ends: 14841 [2020-10-28 00:38:05,750 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:38:05,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14841 states. [2020-10-28 00:38:06,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14841 to 14838. [2020-10-28 00:38:06,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14838 states. [2020-10-28 00:38:06,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14838 states to 14838 states and 24628 transitions. [2020-10-28 00:38:06,717 INFO L78 Accepts]: Start accepts. Automaton has 14838 states and 24628 transitions. Word has length 130 [2020-10-28 00:38:06,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:38:06,718 INFO L481 AbstractCegarLoop]: Abstraction has 14838 states and 24628 transitions. [2020-10-28 00:38:06,718 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:38:06,718 INFO L276 IsEmpty]: Start isEmpty. Operand 14838 states and 24628 transitions. [2020-10-28 00:38:06,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-28 00:38:06,721 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:38:06,721 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] [2020-10-28 00:38:06,721 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 00:38:06,721 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:38:06,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:38:06,722 INFO L82 PathProgramCache]: Analyzing trace with hash -1691766384, now seen corresponding path program 1 times [2020-10-28 00:38:06,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:38:06,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [161034385] [2020-10-28 00:38:06,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:38:06,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:38:06,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:06,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:06,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:07,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:08,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:08,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:08,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:38:08,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-28 00:38:08,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 00:38:08,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2013 [2020-10-28 00:38:08,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:38:08,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:38:08,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-28 00:38:08,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-28 00:38:08,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:38:09,457 WARN L193 SmtUtils]: Spent 632.00 ms on a formula simplification that was a NOOP. DAG size: 289 [2020-10-28 00:38:09,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:38:09,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:38:09,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:09,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:38:09,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:38:09,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:38:09,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 00:38:09,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:38:09,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:38:09,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:38:09,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:38:09,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:38:09,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:38:09,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [161034385] [2020-10-28 00:38:09,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:38:09,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:38:09,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601530943] [2020-10-28 00:38:09,531 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:38:09,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:38:09,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:38:09,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:38:09,532 INFO L87 Difference]: Start difference. First operand 14838 states and 24628 transitions. Second operand 4 states. [2020-10-28 00:38:10,304 WARN L193 SmtUtils]: Spent 715.00 ms on a formula simplification that was a NOOP. DAG size: 293 [2020-10-28 00:38:13,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:38:13,835 INFO L93 Difference]: Finished difference Result 36082 states and 59820 transitions. [2020-10-28 00:38:13,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:38:13,835 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 130 [2020-10-28 00:38:13,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:38:13,894 INFO L225 Difference]: With dead ends: 36082 [2020-10-28 00:38:13,894 INFO L226 Difference]: Without dead ends: 21559 [2020-10-28 00:38:13,928 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:38:13,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21559 states. [2020-10-28 00:38:15,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21559 to 21500. [2020-10-28 00:38:15,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21500 states. [2020-10-28 00:38:15,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21500 states to 21500 states and 35530 transitions. [2020-10-28 00:38:15,421 INFO L78 Accepts]: Start accepts. Automaton has 21500 states and 35530 transitions. Word has length 130 [2020-10-28 00:38:15,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:38:15,421 INFO L481 AbstractCegarLoop]: Abstraction has 21500 states and 35530 transitions. [2020-10-28 00:38:15,421 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:38:15,421 INFO L276 IsEmpty]: Start isEmpty. Operand 21500 states and 35530 transitions. [2020-10-28 00:38:15,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-28 00:38:15,424 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:38:15,425 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] [2020-10-28 00:38:15,425 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 00:38:15,425 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:38:15,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:38:15,426 INFO L82 PathProgramCache]: Analyzing trace with hash 1798671982, now seen corresponding path program 1 times [2020-10-28 00:38:15,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:38:15,426 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1419658713] [2020-10-28 00:38:15,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:38:15,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:38:15,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:15,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:15,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:15,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:15,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:15,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:19,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:19,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:19,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:20,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:38:20,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-28 00:38:20,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 00:38:20,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-28 00:38:20,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:38:20,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:38:20,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-28 00:38:20,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 00:38:20,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:38:21,146 WARN L193 SmtUtils]: Spent 614.00 ms on a formula simplification that was a NOOP. DAG size: 289 [2020-10-28 00:38:21,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:38:21,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:38:21,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:21,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:38:21,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:38:21,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:38:21,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 00:38:21,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:38:21,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:38:21,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:38:21,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:38:21,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:38:21,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:38:21,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1419658713] [2020-10-28 00:38:21,203 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:38:21,203 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:38:21,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685799698] [2020-10-28 00:38:21,204 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:38:21,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:38:21,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:38:21,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:38:21,204 INFO L87 Difference]: Start difference. First operand 21500 states and 35530 transitions. Second operand 4 states. [2020-10-28 00:38:21,895 WARN L193 SmtUtils]: Spent 644.00 ms on a formula simplification that was a NOOP. DAG size: 293 [2020-10-28 00:38:26,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:38:26,235 INFO L93 Difference]: Finished difference Result 47177 states and 78074 transitions. [2020-10-28 00:38:26,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:38:26,236 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 130 [2020-10-28 00:38:26,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:38:26,312 INFO L225 Difference]: With dead ends: 47177 [2020-10-28 00:38:26,312 INFO L226 Difference]: Without dead ends: 32647 [2020-10-28 00:38:26,348 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:38:26,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32647 states. [2020-10-28 00:38:28,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32647 to 32644. [2020-10-28 00:38:28,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32644 states. [2020-10-28 00:38:28,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32644 states to 32644 states and 53828 transitions. [2020-10-28 00:38:28,751 INFO L78 Accepts]: Start accepts. Automaton has 32644 states and 53828 transitions. Word has length 130 [2020-10-28 00:38:28,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:38:28,752 INFO L481 AbstractCegarLoop]: Abstraction has 32644 states and 53828 transitions. [2020-10-28 00:38:28,752 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:38:28,752 INFO L276 IsEmpty]: Start isEmpty. Operand 32644 states and 53828 transitions. [2020-10-28 00:38:28,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-28 00:38:28,759 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:38:28,760 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] [2020-10-28 00:38:28,760 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 00:38:28,761 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:38:28,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:38:28,762 INFO L82 PathProgramCache]: Analyzing trace with hash -1015330237, now seen corresponding path program 1 times [2020-10-28 00:38:28,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:38:28,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1860681924] [2020-10-28 00:38:28,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:38:28,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:38:28,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:28,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:29,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:29,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:29,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:29,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:33,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:33,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:33,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:38:33,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-28 00:38:33,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 00:38:33,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 00:38:33,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:38:33,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:38:33,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-28 00:38:33,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-28 00:38:33,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:38:34,513 WARN L193 SmtUtils]: Spent 646.00 ms on a formula simplification that was a NOOP. DAG size: 289 [2020-10-28 00:38:34,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:38:34,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:38:34,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:34,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:38:34,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:38:34,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:38:34,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 00:38:34,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:38:34,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:38:34,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:38:34,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:38:34,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:38:34,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:38:34,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1860681924] [2020-10-28 00:38:34,566 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:38:34,566 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:38:34,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962252273] [2020-10-28 00:38:34,567 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:38:34,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:38:34,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:38:34,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:38:34,567 INFO L87 Difference]: Start difference. First operand 32644 states and 53828 transitions. Second operand 4 states. [2020-10-28 00:38:35,316 WARN L193 SmtUtils]: Spent 704.00 ms on a formula simplification that was a NOOP. DAG size: 293 [2020-10-28 00:38:39,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:38:39,701 INFO L93 Difference]: Finished difference Result 73276 states and 120803 transitions. [2020-10-28 00:38:39,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:38:39,702 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 133 [2020-10-28 00:38:39,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:38:39,774 INFO L225 Difference]: With dead ends: 73276 [2020-10-28 00:38:39,774 INFO L226 Difference]: Without dead ends: 41118 [2020-10-28 00:38:39,820 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:38:39,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41118 states. [2020-10-28 00:38:42,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41118 to 41045. [2020-10-28 00:38:42,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41045 states. [2020-10-28 00:38:42,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41045 states to 41045 states and 67545 transitions. [2020-10-28 00:38:42,844 INFO L78 Accepts]: Start accepts. Automaton has 41045 states and 67545 transitions. Word has length 133 [2020-10-28 00:38:42,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:38:42,845 INFO L481 AbstractCegarLoop]: Abstraction has 41045 states and 67545 transitions. [2020-10-28 00:38:42,845 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:38:42,845 INFO L276 IsEmpty]: Start isEmpty. Operand 41045 states and 67545 transitions. [2020-10-28 00:38:42,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-28 00:38:42,848 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:38:42,848 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] [2020-10-28 00:38:42,848 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 00:38:42,848 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:38:42,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:38:42,849 INFO L82 PathProgramCache]: Analyzing trace with hash -540004219, now seen corresponding path program 1 times [2020-10-28 00:38:42,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:38:42,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [790032921] [2020-10-28 00:38:42,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:38:42,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:38:42,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:42,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:43,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:43,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:43,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:43,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:43,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:43,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:47,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:38:47,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-28 00:38:47,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 00:38:47,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 00:38:47,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:38:47,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:38:47,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-28 00:38:47,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-28 00:38:47,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:38:48,591 WARN L193 SmtUtils]: Spent 642.00 ms on a formula simplification that was a NOOP. DAG size: 289 [2020-10-28 00:38:48,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:38:48,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:38:48,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:48,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:38:48,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:38:48,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:38:48,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 00:38:48,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:38:48,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:38:48,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:38:48,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:38:48,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:38:48,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:38:48,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [790032921] [2020-10-28 00:38:48,639 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:38:48,639 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:38:48,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034849174] [2020-10-28 00:38:48,640 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:38:48,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:38:48,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:38:48,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:38:48,641 INFO L87 Difference]: Start difference. First operand 41045 states and 67545 transitions. Second operand 4 states. [2020-10-28 00:38:49,421 WARN L193 SmtUtils]: Spent 734.00 ms on a formula simplification that was a NOOP. DAG size: 293 [2020-10-28 00:38:55,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:38:55,700 INFO L93 Difference]: Finished difference Result 100471 states and 165058 transitions. [2020-10-28 00:38:55,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:38:55,700 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 136 [2020-10-28 00:38:55,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:38:55,779 INFO L225 Difference]: With dead ends: 100471 [2020-10-28 00:38:55,779 INFO L226 Difference]: Without dead ends: 59725 [2020-10-28 00:38:55,827 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:38:55,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59725 states. [2020-10-28 00:39:00,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59725 to 59547. [2020-10-28 00:39:00,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59547 states. [2020-10-28 00:39:00,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59547 states to 59547 states and 97467 transitions. [2020-10-28 00:39:00,195 INFO L78 Accepts]: Start accepts. Automaton has 59547 states and 97467 transitions. Word has length 136 [2020-10-28 00:39:00,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:39:00,195 INFO L481 AbstractCegarLoop]: Abstraction has 59547 states and 97467 transitions. [2020-10-28 00:39:00,195 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:39:00,195 INFO L276 IsEmpty]: Start isEmpty. Operand 59547 states and 97467 transitions. [2020-10-28 00:39:00,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-28 00:39:00,198 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:39:00,198 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] [2020-10-28 00:39:00,198 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 00:39:00,199 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:39:00,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:39:00,199 INFO L82 PathProgramCache]: Analyzing trace with hash 1032689393, now seen corresponding path program 1 times [2020-10-28 00:39:00,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:39:00,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1029759295] [2020-10-28 00:39:00,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:39:00,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:39:00,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:00,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:00,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:00,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:00,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:02,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:02,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:02,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:03,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:05,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:39:05,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-28 00:39:05,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 00:39:05,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 00:39:05,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:39:05,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:39:05,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-28 00:39:05,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 00:39:05,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:39:05,903 WARN L193 SmtUtils]: Spent 617.00 ms on a formula simplification that was a NOOP. DAG size: 289 [2020-10-28 00:39:05,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:39:05,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:39:05,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:05,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:39:05,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:39:05,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:39:05,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 00:39:05,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:39:05,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:39:05,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:39:05,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:39:05,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:39:05,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:39:05,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1029759295] [2020-10-28 00:39:05,951 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:39:05,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:39:05,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765187630] [2020-10-28 00:39:05,953 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:39:05,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:39:05,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:39:05,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:39:05,954 INFO L87 Difference]: Start difference. First operand 59547 states and 97467 transitions. Second operand 4 states. [2020-10-28 00:39:06,661 WARN L193 SmtUtils]: Spent 661.00 ms on a formula simplification that was a NOOP. DAG size: 293 [2020-10-28 00:39:14,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:39:14,729 INFO L93 Difference]: Finished difference Result 129598 states and 212401 transitions. [2020-10-28 00:39:14,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:39:14,730 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 136 [2020-10-28 00:39:14,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:39:14,877 INFO L225 Difference]: With dead ends: 129598 [2020-10-28 00:39:14,877 INFO L226 Difference]: Without dead ends: 88852 [2020-10-28 00:39:14,934 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:39:15,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88852 states. [2020-10-28 00:39:20,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88852 to 88849. [2020-10-28 00:39:20,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88849 states. [2020-10-28 00:39:21,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88849 states to 88849 states and 144988 transitions. [2020-10-28 00:39:21,132 INFO L78 Accepts]: Start accepts. Automaton has 88849 states and 144988 transitions. Word has length 136 [2020-10-28 00:39:21,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:39:21,132 INFO L481 AbstractCegarLoop]: Abstraction has 88849 states and 144988 transitions. [2020-10-28 00:39:21,132 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:39:21,132 INFO L276 IsEmpty]: Start isEmpty. Operand 88849 states and 144988 transitions. [2020-10-28 00:39:21,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-28 00:39:21,133 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:39:21,133 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] [2020-10-28 00:39:21,133 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 00:39:21,134 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:39:21,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:39:21,134 INFO L82 PathProgramCache]: Analyzing trace with hash 1065954772, now seen corresponding path program 1 times [2020-10-28 00:39:21,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:39:21,135 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1730115099] [2020-10-28 00:39:21,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:39:21,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:39:21,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:21,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:21,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:21,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:22,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:22,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:22,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:22,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:22,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:22,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:26,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:39:26,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-28 00:39:26,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 00:39:26,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 00:39:26,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:39:26,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:39:26,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-28 00:39:26,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-28 00:39:26,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:39:26,850 WARN L193 SmtUtils]: Spent 627.00 ms on a formula simplification that was a NOOP. DAG size: 289 [2020-10-28 00:39:26,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:39:26,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:39:26,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:26,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:39:26,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:39:26,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:39:26,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 00:39:26,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:39:26,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:39:26,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:39:26,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:39:26,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:39:26,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:39:26,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1730115099] [2020-10-28 00:39:26,900 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:39:26,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:39:26,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223612104] [2020-10-28 00:39:26,901 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:39:26,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:39:26,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:39:26,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:39:26,902 INFO L87 Difference]: Start difference. First operand 88849 states and 144988 transitions. Second operand 4 states. [2020-10-28 00:39:27,602 WARN L193 SmtUtils]: Spent 655.00 ms on a formula simplification that was a NOOP. DAG size: 293 [2020-10-28 00:39:38,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:39:38,551 INFO L93 Difference]: Finished difference Result 216168 states and 351906 transitions. [2020-10-28 00:39:38,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:39:38,552 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 139 [2020-10-28 00:39:38,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:39:38,958 INFO L225 Difference]: With dead ends: 216168 [2020-10-28 00:39:38,959 INFO L226 Difference]: Without dead ends: 127538 [2020-10-28 00:39:39,064 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:39:39,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127538 states. [2020-10-28 00:39:48,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127538 to 127116. [2020-10-28 00:39:48,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127116 states. [2020-10-28 00:39:49,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127116 states to 127116 states and 204923 transitions. [2020-10-28 00:39:49,061 INFO L78 Accepts]: Start accepts. Automaton has 127116 states and 204923 transitions. Word has length 139 [2020-10-28 00:39:49,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:39:49,061 INFO L481 AbstractCegarLoop]: Abstraction has 127116 states and 204923 transitions. [2020-10-28 00:39:49,061 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:39:49,061 INFO L276 IsEmpty]: Start isEmpty. Operand 127116 states and 204923 transitions. [2020-10-28 00:39:49,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-28 00:39:49,063 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:39:49,063 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] [2020-10-28 00:39:49,064 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 00:39:49,064 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:39:49,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:39:49,064 INFO L82 PathProgramCache]: Analyzing trace with hash -1642394989, now seen corresponding path program 1 times [2020-10-28 00:39:49,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:39:49,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1902085174] [2020-10-28 00:39:49,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:39:49,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:39:49,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:49,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:49,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:49,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:49,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:51,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:52,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:52,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:52,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:52,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:52,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:54,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:39:54,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-28 00:39:54,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 00:39:54,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-28 00:39:54,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:39:54,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:39:54,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-28 00:39:54,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 00:39:54,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:39:54,852 WARN L193 SmtUtils]: Spent 671.00 ms on a formula simplification that was a NOOP. DAG size: 289 [2020-10-28 00:39:54,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:39:54,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:39:54,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:54,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:39:54,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:39:54,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:39:54,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 00:39:54,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:39:54,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:39:54,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:39:54,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:39:54,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:39:54,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:39:54,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1902085174] [2020-10-28 00:39:54,900 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:39:54,900 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:39:54,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772695922] [2020-10-28 00:39:54,901 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:39:54,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:39:54,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:39:54,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:39:54,902 INFO L87 Difference]: Start difference. First operand 127116 states and 204923 transitions. Second operand 4 states. [2020-10-28 00:39:55,659 WARN L193 SmtUtils]: Spent 710.00 ms on a formula simplification that was a NOOP. DAG size: 293