/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 04:53:32,689 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 04:53:32,697 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 04:53:32,757 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 04:53:32,758 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 04:53:32,765 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 04:53:32,767 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 04:53:32,772 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 04:53:32,776 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 04:53:32,782 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 04:53:32,784 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 04:53:32,785 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 04:53:32,786 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 04:53:32,789 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 04:53:32,792 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 04:53:32,795 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 04:53:32,797 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 04:53:32,800 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 04:53:32,808 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 04:53:32,816 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 04:53:32,818 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 04:53:32,820 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 04:53:32,821 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 04:53:32,824 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 04:53:32,833 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 04:53:32,833 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 04:53:32,834 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 04:53:32,836 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 04:53:32,836 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 04:53:32,838 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 04:53:32,838 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 04:53:32,839 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 04:53:32,841 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 04:53:32,842 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 04:53:32,843 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 04:53:32,855 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 04:53:32,856 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 04:53:32,856 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 04:53:32,857 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 04:53:32,860 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 04:53:32,860 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 04:53:32,868 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 04:53:32,916 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 04:53:32,917 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 04:53:32,921 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 04:53:32,921 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 04:53:32,921 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 04:53:32,921 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 04:53:32,922 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 04:53:32,922 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 04:53:32,922 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 04:53:32,922 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 04:53:32,923 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 04:53:32,923 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 04:53:32,924 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 04:53:32,924 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 04:53:32,924 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 04:53:32,924 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 04:53:32,924 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 04:53:32,925 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 04:53:32,925 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 04:53:32,925 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 04:53:32,925 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 04:53:32,925 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 04:53:32,926 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 04:53:32,926 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 04:53:32,926 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 04:53:32,926 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 04:53:32,926 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 04:53:32,927 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 04:53:32,927 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 04:53:32,927 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 04:53:33,359 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 04:53:33,407 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 04:53:33,411 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 04:53:33,412 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 04:53:33,413 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 04:53:33,414 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-27 04:53:33,509 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/285729a95/854dd883cea24e6faf17aa454dd40a68/FLAG758193a6a [2020-10-27 04:53:34,273 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 04:53:34,273 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-27 04:53:34,291 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/285729a95/854dd883cea24e6faf17aa454dd40a68/FLAG758193a6a [2020-10-27 04:53:34,484 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/285729a95/854dd883cea24e6faf17aa454dd40a68 [2020-10-27 04:53:34,488 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 04:53:34,496 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 04:53:34,500 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 04:53:34,501 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 04:53:34,505 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 04:53:34,506 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:53:34" (1/1) ... [2020-10-27 04:53:34,515 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8a7d1dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:53:34, skipping insertion in model container [2020-10-27 04:53:34,516 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:53:34" (1/1) ... [2020-10-27 04:53:34,527 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 04:53:34,629 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 04:53:35,327 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:53:35,346 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 04:53:35,658 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:53:35,688 INFO L208 MainTranslator]: Completed translation [2020-10-27 04:53:35,690 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:53:35 WrapperNode [2020-10-27 04:53:35,691 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 04:53:35,692 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 04:53:35,693 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 04:53:35,693 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 04:53:35,708 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:53:35" (1/1) ... [2020-10-27 04:53:35,711 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:53:35" (1/1) ... [2020-10-27 04:53:35,753 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:53:35" (1/1) ... [2020-10-27 04:53:35,754 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:53:35" (1/1) ... [2020-10-27 04:53:35,817 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:53:35" (1/1) ... [2020-10-27 04:53:35,852 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:53:35" (1/1) ... [2020-10-27 04:53:35,865 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:53:35" (1/1) ... [2020-10-27 04:53:35,884 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 04:53:35,885 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 04:53:35,886 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 04:53:35,886 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 04:53:35,888 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:53:35" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 04:53:36,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 04:53:36,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 04:53:36,006 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 04:53:36,006 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 04:53:36,006 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 04:53:36,007 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 04:53:36,007 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 04:53:36,007 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 04:53:36,008 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 04:53:36,008 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 04:53:36,009 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-27 04:53:36,009 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 04:53:36,009 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 04:53:36,010 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 04:53:36,010 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 04:53:36,011 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 04:53:36,011 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 04:53:36,011 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 04:53:36,011 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 04:53:36,012 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 04:53:36,012 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 04:53:36,012 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 04:53:36,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 04:53:36,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 04:53:36,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 04:53:36,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 04:53:36,013 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 04:53:36,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 04:53:37,874 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 04:53:37,875 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 04:53:37,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:53:37 BoogieIcfgContainer [2020-10-27 04:53:37,880 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 04:53:37,883 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 04:53:37,883 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 04:53:37,887 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 04:53:37,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:53:34" (1/3) ... [2020-10-27 04:53:37,889 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4039847a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:53:37, skipping insertion in model container [2020-10-27 04:53:37,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:53:35" (2/3) ... [2020-10-27 04:53:37,890 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4039847a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:53:37, skipping insertion in model container [2020-10-27 04:53:37,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:53:37" (3/3) ... [2020-10-27 04:53:37,892 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-27 04:53:37,906 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 04:53:37,912 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 04:53:37,928 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 04:53:37,980 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 04:53:37,980 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 04:53:37,980 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 04:53:37,980 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 04:53:37,981 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 04:53:37,981 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 04:53:37,981 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 04:53:37,981 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 04:53:38,024 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states. [2020-10-27 04:53:38,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-27 04:53:38,058 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:53:38,060 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:53:38,060 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:53:38,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:53:38,069 INFO L82 PathProgramCache]: Analyzing trace with hash -538195825, now seen corresponding path program 1 times [2020-10-27 04:53:38,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:53:38,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1004852281] [2020-10-27 04:53:38,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:53:38,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:53:38,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:39,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:39,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:39,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:39,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:39,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:40,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:40,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:40,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:41,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:41,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:41,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:43,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:53:43,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-27 04:53:43,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 04:53:43,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 04:53:43,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:53:43,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:53:43,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:53:43,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-27 04:53:43,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 04:53:44,294 WARN L193 SmtUtils]: Spent 474.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-27 04:53:44,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:53:44,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:53:44,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:44,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:53:44,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:53:44,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:53:44,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 04:53:44,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:53:44,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:53:44,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:53:44,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:53:44,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:53:44,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:53:44,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1004852281] [2020-10-27 04:53:44,426 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:53:44,427 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:53:44,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793891127] [2020-10-27 04:53:44,433 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:53:44,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:53:44,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:53:44,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:53:44,452 INFO L87 Difference]: Start difference. First operand 397 states. Second operand 5 states. [2020-10-27 04:53:48,142 WARN L193 SmtUtils]: Spent 427.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-27 04:53:49,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:53:49,556 INFO L93 Difference]: Finished difference Result 1119 states and 2026 transitions. [2020-10-27 04:53:49,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 04:53:49,558 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-10-27 04:53:49,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:53:49,588 INFO L225 Difference]: With dead ends: 1119 [2020-10-27 04:53:49,588 INFO L226 Difference]: Without dead ends: 737 [2020-10-27 04:53:49,599 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:53:49,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2020-10-27 04:53:49,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 714. [2020-10-27 04:53:49,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 714 states. [2020-10-27 04:53:49,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 714 states to 714 states and 1021 transitions. [2020-10-27 04:53:49,729 INFO L78 Accepts]: Start accepts. Automaton has 714 states and 1021 transitions. Word has length 146 [2020-10-27 04:53:49,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:53:49,731 INFO L481 AbstractCegarLoop]: Abstraction has 714 states and 1021 transitions. [2020-10-27 04:53:49,731 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:53:49,731 INFO L276 IsEmpty]: Start isEmpty. Operand 714 states and 1021 transitions. [2020-10-27 04:53:49,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-27 04:53:49,743 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:53:49,743 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:53:49,743 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 04:53:49,744 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:53:49,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:53:49,746 INFO L82 PathProgramCache]: Analyzing trace with hash -962896790, now seen corresponding path program 1 times [2020-10-27 04:53:49,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:53:49,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1528027859] [2020-10-27 04:53:49,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:53:49,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:53:49,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:49,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:49,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:50,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:50,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:50,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:50,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:50,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:50,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:51,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:51,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:51,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:54,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:53:54,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-27 04:53:54,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 04:53:54,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 04:53:54,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:53:54,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:53:54,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:53:54,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 04:53:54,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:53:55,339 WARN L193 SmtUtils]: Spent 412.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-27 04:53:55,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:53:55,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:53:55,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:55,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:53:55,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:53:55,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:53:55,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 04:53:55,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:53:55,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:53:55,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:53:55,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:53:55,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:53:55,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:53:55,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1528027859] [2020-10-27 04:53:55,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:53:55,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:53:55,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890960346] [2020-10-27 04:53:55,447 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:53:55,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:53:55,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:53:55,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:53:55,459 INFO L87 Difference]: Start difference. First operand 714 states and 1021 transitions. Second operand 5 states. [2020-10-27 04:53:58,211 WARN L193 SmtUtils]: Spent 427.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-27 04:53:59,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:53:59,563 INFO L93 Difference]: Finished difference Result 2063 states and 2938 transitions. [2020-10-27 04:53:59,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 04:53:59,564 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2020-10-27 04:53:59,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:53:59,574 INFO L225 Difference]: With dead ends: 2063 [2020-10-27 04:53:59,574 INFO L226 Difference]: Without dead ends: 1376 [2020-10-27 04:53:59,577 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:53:59,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1376 states. [2020-10-27 04:53:59,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1376 to 1353. [2020-10-27 04:53:59,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1353 states. [2020-10-27 04:53:59,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1353 states to 1353 states and 1918 transitions. [2020-10-27 04:53:59,662 INFO L78 Accepts]: Start accepts. Automaton has 1353 states and 1918 transitions. Word has length 147 [2020-10-27 04:53:59,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:53:59,663 INFO L481 AbstractCegarLoop]: Abstraction has 1353 states and 1918 transitions. [2020-10-27 04:53:59,663 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:53:59,663 INFO L276 IsEmpty]: Start isEmpty. Operand 1353 states and 1918 transitions. [2020-10-27 04:53:59,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-27 04:53:59,667 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:53:59,667 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:53:59,667 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 04:53:59,668 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:53:59,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:53:59,669 INFO L82 PathProgramCache]: Analyzing trace with hash 1887106545, now seen corresponding path program 1 times [2020-10-27 04:53:59,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:53:59,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1119593296] [2020-10-27 04:53:59,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:53:59,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:53:59,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:59,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:59,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:59,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:00,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:00,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:00,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:01,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:02,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:02,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:04,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:54:04,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-27 04:54:04,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 04:54:04,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 04:54:04,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:54:04,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:54:04,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:54:04,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-27 04:54:04,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:54:05,374 WARN L193 SmtUtils]: Spent 466.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-27 04:54:05,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:54:05,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:54:05,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:05,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:54:05,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:54:05,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:54:05,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 04:54:05,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:54:05,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:54:05,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:54:05,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:54:05,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:54:05,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:54:05,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1119593296] [2020-10-27 04:54:05,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:54:05,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:54:05,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032232413] [2020-10-27 04:54:05,481 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:54:05,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:54:05,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:54:05,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:54:05,484 INFO L87 Difference]: Start difference. First operand 1353 states and 1918 transitions. Second operand 5 states. [2020-10-27 04:54:08,489 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-27 04:54:09,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:54:09,892 INFO L93 Difference]: Finished difference Result 3859 states and 5475 transitions. [2020-10-27 04:54:09,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 04:54:09,893 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-10-27 04:54:09,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:54:09,910 INFO L225 Difference]: With dead ends: 3859 [2020-10-27 04:54:09,912 INFO L226 Difference]: Without dead ends: 2632 [2020-10-27 04:54:09,921 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:54:09,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2632 states. [2020-10-27 04:54:10,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2632 to 2609. [2020-10-27 04:54:10,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2609 states. [2020-10-27 04:54:10,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2609 states to 2609 states and 3661 transitions. [2020-10-27 04:54:10,150 INFO L78 Accepts]: Start accepts. Automaton has 2609 states and 3661 transitions. Word has length 148 [2020-10-27 04:54:10,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:54:10,153 INFO L481 AbstractCegarLoop]: Abstraction has 2609 states and 3661 transitions. [2020-10-27 04:54:10,153 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:54:10,153 INFO L276 IsEmpty]: Start isEmpty. Operand 2609 states and 3661 transitions. [2020-10-27 04:54:10,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-27 04:54:10,160 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:54:10,161 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:54:10,161 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 04:54:10,161 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:54:10,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:54:10,162 INFO L82 PathProgramCache]: Analyzing trace with hash 1124666504, now seen corresponding path program 1 times [2020-10-27 04:54:10,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:54:10,163 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1395862209] [2020-10-27 04:54:10,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:54:10,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:54:10,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:10,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:10,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:10,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:10,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:10,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:10,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:13,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:15,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:54:15,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-27 04:54:15,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 04:54:15,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-27 04:54:15,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:54:15,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:54:15,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:54:15,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-27 04:54:15,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:54:15,738 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-27 04:54:15,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:54:15,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:54:15,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:15,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:54:15,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:54:15,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:54:15,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 04:54:15,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:54:15,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:54:15,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:54:15,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:54:15,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-27 04:54:15,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:54:15,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1395862209] [2020-10-27 04:54:15,903 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:54:15,903 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:54:15,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938779218] [2020-10-27 04:54:15,905 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:54:15,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:54:15,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:54:15,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:54:15,906 INFO L87 Difference]: Start difference. First operand 2609 states and 3661 transitions. Second operand 5 states. [2020-10-27 04:54:18,916 WARN L193 SmtUtils]: Spent 412.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-27 04:54:20,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:54:20,444 INFO L93 Difference]: Finished difference Result 7097 states and 10006 transitions. [2020-10-27 04:54:20,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 04:54:20,451 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2020-10-27 04:54:20,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:54:20,475 INFO L225 Difference]: With dead ends: 7097 [2020-10-27 04:54:20,476 INFO L226 Difference]: Without dead ends: 5074 [2020-10-27 04:54:20,481 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:54:20,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5074 states. [2020-10-27 04:54:20,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5074 to 5051. [2020-10-27 04:54:20,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5051 states. [2020-10-27 04:54:20,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5051 states to 5051 states and 7008 transitions. [2020-10-27 04:54:20,813 INFO L78 Accepts]: Start accepts. Automaton has 5051 states and 7008 transitions. Word has length 149 [2020-10-27 04:54:20,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:54:20,813 INFO L481 AbstractCegarLoop]: Abstraction has 5051 states and 7008 transitions. [2020-10-27 04:54:20,813 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:54:20,814 INFO L276 IsEmpty]: Start isEmpty. Operand 5051 states and 7008 transitions. [2020-10-27 04:54:20,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-27 04:54:20,823 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:54:20,823 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:54:20,824 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 04:54:20,824 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:54:20,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:54:20,825 INFO L82 PathProgramCache]: Analyzing trace with hash 1803267858, now seen corresponding path program 1 times [2020-10-27 04:54:20,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:54:20,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1625834713] [2020-10-27 04:54:20,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:54:20,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:54:20,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:20,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:20,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:20,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:21,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:21,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:21,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:22,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:25,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:25,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:25,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:54:25,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-27 04:54:25,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 04:54:25,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 04:54:25,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:54:25,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:54:25,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:54:25,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-27 04:54:25,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:54:26,365 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-27 04:54:26,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:54:26,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:54:26,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:26,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:54:26,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:54:26,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:54:26,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 04:54:26,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:54:26,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:54:26,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:54:26,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:54:26,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:54:26,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:54:26,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1625834713] [2020-10-27 04:54:26,469 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:54:26,469 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:54:26,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076216367] [2020-10-27 04:54:26,470 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:54:26,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:54:26,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:54:26,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:54:26,472 INFO L87 Difference]: Start difference. First operand 5051 states and 7008 transitions. Second operand 5 states. [2020-10-27 04:54:29,642 WARN L193 SmtUtils]: Spent 428.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-27 04:54:31,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:54:31,273 INFO L93 Difference]: Finished difference Result 13832 states and 19252 transitions. [2020-10-27 04:54:31,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 04:54:31,275 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2020-10-27 04:54:31,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:54:31,318 INFO L225 Difference]: With dead ends: 13832 [2020-10-27 04:54:31,318 INFO L226 Difference]: Without dead ends: 9761 [2020-10-27 04:54:31,330 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:54:31,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9761 states. [2020-10-27 04:54:32,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9761 to 9744. [2020-10-27 04:54:32,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9744 states. [2020-10-27 04:54:32,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9744 states to 9744 states and 13319 transitions. [2020-10-27 04:54:32,097 INFO L78 Accepts]: Start accepts. Automaton has 9744 states and 13319 transitions. Word has length 150 [2020-10-27 04:54:32,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:54:32,098 INFO L481 AbstractCegarLoop]: Abstraction has 9744 states and 13319 transitions. [2020-10-27 04:54:32,098 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:54:32,098 INFO L276 IsEmpty]: Start isEmpty. Operand 9744 states and 13319 transitions. [2020-10-27 04:54:32,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-27 04:54:32,116 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:54:32,117 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:54:32,117 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 04:54:32,117 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:54:32,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:54:32,118 INFO L82 PathProgramCache]: Analyzing trace with hash 683779624, now seen corresponding path program 1 times [2020-10-27 04:54:32,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:54:32,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1445512766] [2020-10-27 04:54:32,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:54:32,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:54:32,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:32,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:32,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:32,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:32,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:32,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:32,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:37,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:54:37,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-27 04:54:37,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 04:54:37,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 04:54:37,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:54:37,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:54:37,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 04:54:37,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 04:54:37,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:54:37,579 WARN L193 SmtUtils]: Spent 390.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-27 04:54:37,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:54:37,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:54:37,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:37,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:54:37,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:54:37,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:54:37,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:54:37,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:54:37,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:54:37,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:54:37,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:54:37,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:54:37,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:54:37,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1445512766] [2020-10-27 04:54:37,633 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:54:37,633 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 04:54:37,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192143985] [2020-10-27 04:54:37,634 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 04:54:37,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:54:37,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 04:54:37,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 04:54:37,635 INFO L87 Difference]: Start difference. First operand 9744 states and 13319 transitions. Second operand 4 states. [2020-10-27 04:54:40,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:54:40,878 INFO L93 Difference]: Finished difference Result 28688 states and 39263 transitions. [2020-10-27 04:54:40,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 04:54:40,879 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 151 [2020-10-27 04:54:40,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:54:40,943 INFO L225 Difference]: With dead ends: 28688 [2020-10-27 04:54:40,944 INFO L226 Difference]: Without dead ends: 19409 [2020-10-27 04:54:40,968 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 04:54:40,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19409 states. [2020-10-27 04:54:41,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19409 to 9746. [2020-10-27 04:54:41,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9746 states. [2020-10-27 04:54:41,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9746 states to 9746 states and 13321 transitions. [2020-10-27 04:54:41,875 INFO L78 Accepts]: Start accepts. Automaton has 9746 states and 13321 transitions. Word has length 151 [2020-10-27 04:54:41,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:54:41,876 INFO L481 AbstractCegarLoop]: Abstraction has 9746 states and 13321 transitions. [2020-10-27 04:54:41,876 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 04:54:41,876 INFO L276 IsEmpty]: Start isEmpty. Operand 9746 states and 13321 transitions. [2020-10-27 04:54:41,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-27 04:54:41,892 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:54:41,892 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:54:41,893 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 04:54:41,893 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:54:41,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:54:41,894 INFO L82 PathProgramCache]: Analyzing trace with hash -1082977742, now seen corresponding path program 1 times [2020-10-27 04:54:41,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:54:41,894 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [970663964] [2020-10-27 04:54:41,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:54:41,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:54:41,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:41,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:42,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:42,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:42,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:42,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:42,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:46,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:54:46,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-27 04:54:46,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 04:54:46,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-27 04:54:46,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:54:46,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:54:46,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 04:54:46,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-27 04:54:46,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:54:47,432 WARN L193 SmtUtils]: Spent 397.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-27 04:54:47,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:54:47,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:54:47,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:47,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:54:47,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:54:47,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:54:47,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 04:54:47,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:54:47,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:54:47,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:54:47,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:54:47,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:54:47,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:54:47,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [970663964] [2020-10-27 04:54:47,507 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:54:47,507 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:54:47,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536164289] [2020-10-27 04:54:47,508 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:54:47,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:54:47,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:54:47,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:54:47,509 INFO L87 Difference]: Start difference. First operand 9746 states and 13321 transitions. Second operand 5 states. [2020-10-27 04:54:49,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:54:49,970 INFO L93 Difference]: Finished difference Result 17080 states and 23302 transitions. [2020-10-27 04:54:49,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 04:54:49,971 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-10-27 04:54:49,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:54:49,988 INFO L225 Difference]: With dead ends: 17080 [2020-10-27 04:54:49,988 INFO L226 Difference]: Without dead ends: 7450 [2020-10-27 04:54:50,008 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 04:54:50,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7450 states. [2020-10-27 04:54:50,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7450 to 7450. [2020-10-27 04:54:50,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7450 states. [2020-10-27 04:54:50,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7450 states to 7450 states and 10156 transitions. [2020-10-27 04:54:50,489 INFO L78 Accepts]: Start accepts. Automaton has 7450 states and 10156 transitions. Word has length 152 [2020-10-27 04:54:50,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:54:50,490 INFO L481 AbstractCegarLoop]: Abstraction has 7450 states and 10156 transitions. [2020-10-27 04:54:50,490 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:54:50,490 INFO L276 IsEmpty]: Start isEmpty. Operand 7450 states and 10156 transitions. [2020-10-27 04:54:50,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-27 04:54:50,503 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:54:50,504 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:54:50,504 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 04:54:50,504 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:54:50,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:54:50,505 INFO L82 PathProgramCache]: Analyzing trace with hash 2018179781, now seen corresponding path program 1 times [2020-10-27 04:54:50,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:54:50,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [442920253] [2020-10-27 04:54:50,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:54:50,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:54:50,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:50,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:50,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:50,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:50,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:50,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:54,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:54,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:55,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:54:55,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-27 04:54:55,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 04:54:55,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 04:54:55,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:54:55,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:54:55,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:54:55,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-27 04:54:55,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:54:56,054 WARN L193 SmtUtils]: Spent 388.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-27 04:54:56,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:54:56,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:54:56,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:56,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:54:56,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:54:56,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:54:56,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:54:56,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:54:56,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:54:56,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:54:56,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:54:56,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:54:56,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:54:56,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [442920253] [2020-10-27 04:54:56,129 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:54:56,129 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:54:56,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162921905] [2020-10-27 04:54:56,130 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:54:56,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:54:56,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:54:56,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:54:56,131 INFO L87 Difference]: Start difference. First operand 7450 states and 10156 transitions. Second operand 5 states. [2020-10-27 04:54:59,435 WARN L193 SmtUtils]: Spent 478.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-27 04:55:01,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:55:01,175 INFO L93 Difference]: Finished difference Result 18945 states and 25812 transitions. [2020-10-27 04:55:01,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 04:55:01,176 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 158 [2020-10-27 04:55:01,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:55:01,198 INFO L225 Difference]: With dead ends: 18945 [2020-10-27 04:55:01,199 INFO L226 Difference]: Without dead ends: 12127 [2020-10-27 04:55:01,212 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:55:01,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12127 states. [2020-10-27 04:55:02,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12127 to 12107. [2020-10-27 04:55:02,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12107 states. [2020-10-27 04:55:02,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12107 states to 12107 states and 16207 transitions. [2020-10-27 04:55:02,182 INFO L78 Accepts]: Start accepts. Automaton has 12107 states and 16207 transitions. Word has length 158 [2020-10-27 04:55:02,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:55:02,182 INFO L481 AbstractCegarLoop]: Abstraction has 12107 states and 16207 transitions. [2020-10-27 04:55:02,182 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:55:02,182 INFO L276 IsEmpty]: Start isEmpty. Operand 12107 states and 16207 transitions. [2020-10-27 04:55:02,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-27 04:55:02,197 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:55:02,198 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:55:02,198 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 04:55:02,198 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:55:02,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:55:02,199 INFO L82 PathProgramCache]: Analyzing trace with hash -199488099, now seen corresponding path program 1 times [2020-10-27 04:55:02,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:55:02,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1872900743] [2020-10-27 04:55:02,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:55:02,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:55:02,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:02,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:02,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:02,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:02,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:02,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:02,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:02,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:07,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:55:07,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-27 04:55:07,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 04:55:07,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-27 04:55:07,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:55:07,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:55:07,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:55:07,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-27 04:55:07,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:55:07,733 WARN L193 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-27 04:55:07,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:55:07,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:55:07,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:07,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:55:07,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:55:07,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:55:07,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 04:55:07,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:55:07,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:55:07,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:55:07,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:55:07,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:55:07,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:55:07,853 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1872900743] [2020-10-27 04:55:07,853 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:55:07,854 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:55:07,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737596042] [2020-10-27 04:55:07,854 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 04:55:07,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:55:07,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 04:55:07,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 04:55:07,855 INFO L87 Difference]: Start difference. First operand 12107 states and 16207 transitions. Second operand 6 states. [2020-10-27 04:55:08,334 WARN L193 SmtUtils]: Spent 421.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-27 04:55:10,858 WARN L193 SmtUtils]: Spent 482.00 ms on a formula simplification that was a NOOP. DAG size: 224 [2020-10-27 04:55:12,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:55:12,157 INFO L93 Difference]: Finished difference Result 27639 states and 37659 transitions. [2020-10-27 04:55:12,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 04:55:12,158 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 159 [2020-10-27 04:55:12,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:55:12,189 INFO L225 Difference]: With dead ends: 27639 [2020-10-27 04:55:12,189 INFO L226 Difference]: Without dead ends: 17209 [2020-10-27 04:55:12,210 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:55:12,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17209 states. [2020-10-27 04:55:13,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17209 to 17178. [2020-10-27 04:55:13,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17178 states. [2020-10-27 04:55:13,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17178 states to 17178 states and 23166 transitions. [2020-10-27 04:55:13,617 INFO L78 Accepts]: Start accepts. Automaton has 17178 states and 23166 transitions. Word has length 159 [2020-10-27 04:55:13,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:55:13,618 INFO L481 AbstractCegarLoop]: Abstraction has 17178 states and 23166 transitions. [2020-10-27 04:55:13,618 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 04:55:13,618 INFO L276 IsEmpty]: Start isEmpty. Operand 17178 states and 23166 transitions. [2020-10-27 04:55:13,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-27 04:55:13,637 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:55:13,637 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:55:13,638 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 04:55:13,638 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:55:13,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:55:13,639 INFO L82 PathProgramCache]: Analyzing trace with hash 361230323, now seen corresponding path program 1 times [2020-10-27 04:55:13,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:55:13,639 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [678913702] [2020-10-27 04:55:13,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:55:13,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:55:13,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:13,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:13,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:13,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:13,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:13,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:18,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:55:18,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-27 04:55:18,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:55:18,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 04:55:18,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:55:18,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:55:18,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 04:55:18,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 04:55:18,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:55:19,083 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-27 04:55:19,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:55:19,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:55:19,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:19,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:55:19,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:55:19,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:55:19,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:55:19,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:55:19,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:55:19,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:55:19,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:55:19,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:55:19,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:55:19,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [678913702] [2020-10-27 04:55:19,133 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:55:19,133 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 04:55:19,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068494231] [2020-10-27 04:55:19,134 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 04:55:19,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:55:19,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 04:55:19,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 04:55:19,135 INFO L87 Difference]: Start difference. First operand 17178 states and 23166 transitions. Second operand 4 states. [2020-10-27 04:55:22,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:55:22,772 INFO L93 Difference]: Finished difference Result 33946 states and 45822 transitions. [2020-10-27 04:55:22,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 04:55:22,773 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2020-10-27 04:55:22,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:55:22,807 INFO L225 Difference]: With dead ends: 33946 [2020-10-27 04:55:22,807 INFO L226 Difference]: Without dead ends: 20633 [2020-10-27 04:55:22,830 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 04:55:22,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20633 states. [2020-10-27 04:55:24,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20633 to 17178. [2020-10-27 04:55:24,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17178 states. [2020-10-27 04:55:24,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17178 states to 17178 states and 23165 transitions. [2020-10-27 04:55:24,296 INFO L78 Accepts]: Start accepts. Automaton has 17178 states and 23165 transitions. Word has length 159 [2020-10-27 04:55:24,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:55:24,296 INFO L481 AbstractCegarLoop]: Abstraction has 17178 states and 23165 transitions. [2020-10-27 04:55:24,296 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 04:55:24,297 INFO L276 IsEmpty]: Start isEmpty. Operand 17178 states and 23165 transitions. [2020-10-27 04:55:24,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-27 04:55:24,310 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:55:24,310 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:55:24,311 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 04:55:24,311 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:55:24,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:55:24,311 INFO L82 PathProgramCache]: Analyzing trace with hash 1731427838, now seen corresponding path program 1 times [2020-10-27 04:55:24,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:55:24,312 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1647995794] [2020-10-27 04:55:24,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:55:24,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:55:24,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:24,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:24,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:24,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:24,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:24,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:29,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:55:29,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-27 04:55:29,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:55:29,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 04:55:29,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:55:29,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:55:29,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 04:55:29,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 04:55:29,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:55:29,822 WARN L193 SmtUtils]: Spent 393.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-27 04:55:29,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:55:29,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:55:29,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:29,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:55:29,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:55:29,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:55:29,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 04:55:29,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:55:29,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:55:29,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:55:29,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:55:29,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:55:29,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:55:29,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1647995794] [2020-10-27 04:55:29,885 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:55:29,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:55:29,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205763221] [2020-10-27 04:55:29,886 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:55:29,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:55:29,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:55:29,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:55:29,887 INFO L87 Difference]: Start difference. First operand 17178 states and 23165 transitions. Second operand 5 states. [2020-10-27 04:55:32,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:55:32,963 INFO L93 Difference]: Finished difference Result 30904 states and 41665 transitions. [2020-10-27 04:55:32,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 04:55:32,964 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 160 [2020-10-27 04:55:32,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:55:32,984 INFO L225 Difference]: With dead ends: 30904 [2020-10-27 04:55:32,984 INFO L226 Difference]: Without dead ends: 13944 [2020-10-27 04:55:33,009 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 04:55:33,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13944 states. [2020-10-27 04:55:34,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13944 to 13944. [2020-10-27 04:55:34,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13944 states. [2020-10-27 04:55:34,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13944 states to 13944 states and 18751 transitions. [2020-10-27 04:55:34,072 INFO L78 Accepts]: Start accepts. Automaton has 13944 states and 18751 transitions. Word has length 160 [2020-10-27 04:55:34,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:55:34,072 INFO L481 AbstractCegarLoop]: Abstraction has 13944 states and 18751 transitions. [2020-10-27 04:55:34,072 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:55:34,073 INFO L276 IsEmpty]: Start isEmpty. Operand 13944 states and 18751 transitions. [2020-10-27 04:55:34,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-27 04:55:34,086 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:55:34,087 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:55:34,087 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 04:55:34,087 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:55:34,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:55:34,088 INFO L82 PathProgramCache]: Analyzing trace with hash -1475030183, now seen corresponding path program 1 times [2020-10-27 04:55:34,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:55:34,088 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1481807337] [2020-10-27 04:55:34,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:55:34,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:55:34,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:34,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:34,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:34,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:34,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:39,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:55:39,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-27 04:55:39,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:55:39,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-27 04:55:39,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:55:39,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:55:39,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 04:55:39,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 04:55:39,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:55:39,637 WARN L193 SmtUtils]: Spent 399.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-27 04:55:39,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:55:39,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:55:39,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:39,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:55:39,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:55:39,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:55:39,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:55:39,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:55:39,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:55:39,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:55:39,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:55:39,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:55:39,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:55:39,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1481807337] [2020-10-27 04:55:39,695 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:55:39,695 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:55:39,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392917241] [2020-10-27 04:55:39,696 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:55:39,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:55:39,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:55:39,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:55:39,697 INFO L87 Difference]: Start difference. First operand 13944 states and 18751 transitions. Second operand 5 states. [2020-10-27 04:55:42,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:55:42,439 INFO L93 Difference]: Finished difference Result 24106 states and 32432 transitions. [2020-10-27 04:55:42,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 04:55:42,440 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 166 [2020-10-27 04:55:42,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:55:42,454 INFO L225 Difference]: With dead ends: 24106 [2020-10-27 04:55:42,454 INFO L226 Difference]: Without dead ends: 10239 [2020-10-27 04:55:42,468 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 04:55:42,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10239 states. [2020-10-27 04:55:43,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10239 to 10239. [2020-10-27 04:55:43,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10239 states. [2020-10-27 04:55:43,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10239 states to 10239 states and 13778 transitions. [2020-10-27 04:55:43,355 INFO L78 Accepts]: Start accepts. Automaton has 10239 states and 13778 transitions. Word has length 166 [2020-10-27 04:55:43,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:55:43,355 INFO L481 AbstractCegarLoop]: Abstraction has 10239 states and 13778 transitions. [2020-10-27 04:55:43,355 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:55:43,355 INFO L276 IsEmpty]: Start isEmpty. Operand 10239 states and 13778 transitions. [2020-10-27 04:55:43,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-27 04:55:43,363 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:55:43,363 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:55:43,363 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 04:55:43,364 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:55:43,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:55:43,364 INFO L82 PathProgramCache]: Analyzing trace with hash 1952416478, now seen corresponding path program 1 times [2020-10-27 04:55:43,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:55:43,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [236806658] [2020-10-27 04:55:43,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:55:43,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:55:43,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:43,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:43,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:43,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:43,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:43,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:43,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:44,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:48,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:55:48,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-27 04:55:48,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 04:55:48,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 04:55:48,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:55:48,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 04:55:48,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:55:48,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-27 04:55:48,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:55:49,059 WARN L193 SmtUtils]: Spent 399.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-27 04:55:49,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:55:49,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:55:49,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:49,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:55:49,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:55:49,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:55:49,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 04:55:49,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:55:49,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:55:49,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:55:49,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:55:49,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:55:49,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:55:49,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [236806658] [2020-10-27 04:55:49,179 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:55:49,179 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 04:55:49,179 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428083157] [2020-10-27 04:55:49,180 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 04:55:49,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:55:49,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 04:55:49,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-10-27 04:55:49,181 INFO L87 Difference]: Start difference. First operand 10239 states and 13778 transitions. Second operand 12 states. [2020-10-27 04:55:49,758 WARN L193 SmtUtils]: Spent 495.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-27 04:55:55,506 WARN L193 SmtUtils]: Spent 483.00 ms on a formula simplification that was a NOOP. DAG size: 221 [2020-10-27 04:55:56,021 WARN L193 SmtUtils]: Spent 448.00 ms on a formula simplification that was a NOOP. DAG size: 225 [2020-10-27 04:55:56,514 WARN L193 SmtUtils]: Spent 429.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-27 04:56:00,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:56:00,466 INFO L93 Difference]: Finished difference Result 41810 states and 58243 transitions. [2020-10-27 04:56:00,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-27 04:56:00,467 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 174 [2020-10-27 04:56:00,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:56:00,508 INFO L225 Difference]: With dead ends: 41810 [2020-10-27 04:56:00,508 INFO L226 Difference]: Without dead ends: 35199 [2020-10-27 04:56:00,518 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=169, Invalid=587, Unknown=0, NotChecked=0, Total=756 [2020-10-27 04:56:00,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35199 states. [2020-10-27 04:56:01,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35199 to 11127. [2020-10-27 04:56:01,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11127 states. [2020-10-27 04:56:01,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11127 states to 11127 states and 14824 transitions. [2020-10-27 04:56:01,580 INFO L78 Accepts]: Start accepts. Automaton has 11127 states and 14824 transitions. Word has length 174 [2020-10-27 04:56:01,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:56:01,581 INFO L481 AbstractCegarLoop]: Abstraction has 11127 states and 14824 transitions. [2020-10-27 04:56:01,581 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 04:56:01,581 INFO L276 IsEmpty]: Start isEmpty. Operand 11127 states and 14824 transitions. [2020-10-27 04:56:01,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-27 04:56:01,589 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:56:01,589 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:56:01,589 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 04:56:01,590 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:56:01,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:56:01,590 INFO L82 PathProgramCache]: Analyzing trace with hash -1073751928, now seen corresponding path program 1 times [2020-10-27 04:56:01,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:56:01,591 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [368286471] [2020-10-27 04:56:01,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:56:01,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:56:01,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:01,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:01,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:01,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:02,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:02,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:02,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:02,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:06,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:56:06,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-27 04:56:06,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 04:56:06,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 04:56:06,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:56:06,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:56:06,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:56:06,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-27 04:56:06,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:56:07,123 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-27 04:56:07,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:56:07,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:56:07,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:07,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:56:07,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:56:07,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:56:07,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 04:56:07,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:56:07,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:56:07,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:56:07,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:56:07,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:56:07,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:56:07,192 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [368286471] [2020-10-27 04:56:07,193 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:56:07,193 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:56:07,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627733020] [2020-10-27 04:56:07,193 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 04:56:07,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:56:07,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 04:56:07,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 04:56:07,195 INFO L87 Difference]: Start difference. First operand 11127 states and 14824 transitions. Second operand 6 states. [2020-10-27 04:56:07,659 WARN L193 SmtUtils]: Spent 404.00 ms on a formula simplification that was a NOOP. DAG size: 225 [2020-10-27 04:56:10,519 WARN L193 SmtUtils]: Spent 434.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-27 04:56:12,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:56:12,727 INFO L93 Difference]: Finished difference Result 27896 states and 37888 transitions. [2020-10-27 04:56:12,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 04:56:12,728 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 174 [2020-10-27 04:56:12,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:56:12,747 INFO L225 Difference]: With dead ends: 27896 [2020-10-27 04:56:12,747 INFO L226 Difference]: Without dead ends: 18099 [2020-10-27 04:56:12,759 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-27 04:56:12,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18099 states. [2020-10-27 04:56:14,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18099 to 17881. [2020-10-27 04:56:14,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17881 states. [2020-10-27 04:56:14,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17881 states to 17881 states and 24173 transitions. [2020-10-27 04:56:14,422 INFO L78 Accepts]: Start accepts. Automaton has 17881 states and 24173 transitions. Word has length 174 [2020-10-27 04:56:14,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:56:14,422 INFO L481 AbstractCegarLoop]: Abstraction has 17881 states and 24173 transitions. [2020-10-27 04:56:14,423 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 04:56:14,423 INFO L276 IsEmpty]: Start isEmpty. Operand 17881 states and 24173 transitions. [2020-10-27 04:56:14,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-27 04:56:14,432 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:56:14,432 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:56:14,432 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 04:56:14,433 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:56:14,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:56:14,433 INFO L82 PathProgramCache]: Analyzing trace with hash -2106955896, now seen corresponding path program 1 times [2020-10-27 04:56:14,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:56:14,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1832897846] [2020-10-27 04:56:14,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:56:14,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:56:14,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:14,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:14,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:14,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:19,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:56:19,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-27 04:56:19,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:56:19,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-27 04:56:19,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:56:19,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 04:56:19,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:56:19,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-27 04:56:19,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:56:20,090 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 14 [2020-10-27 04:56:20,661 WARN L193 SmtUtils]: Spent 412.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-27 04:56:20,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:56:20,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:56:20,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:20,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:56:20,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:56:20,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:56:20,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 04:56:20,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:56:20,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:56:20,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:56:20,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:56:20,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:56:20,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:56:20,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1832897846] [2020-10-27 04:56:20,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:56:20,786 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-27 04:56:20,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170019038] [2020-10-27 04:56:20,787 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 04:56:20,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:56:20,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 04:56:20,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2020-10-27 04:56:20,788 INFO L87 Difference]: Start difference. First operand 17881 states and 24173 transitions. Second operand 15 states. [2020-10-27 04:56:21,344 WARN L193 SmtUtils]: Spent 463.00 ms on a formula simplification that was a NOOP. DAG size: 230 [2020-10-27 04:56:27,461 WARN L193 SmtUtils]: Spent 432.00 ms on a formula simplification that was a NOOP. DAG size: 228 [2020-10-27 04:56:31,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:56:31,434 INFO L93 Difference]: Finished difference Result 34597 states and 47207 transitions. [2020-10-27 04:56:31,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 04:56:31,435 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 174 [2020-10-27 04:56:31,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:56:31,468 INFO L225 Difference]: With dead ends: 34597 [2020-10-27 04:56:31,468 INFO L226 Difference]: Without dead ends: 26918 [2020-10-27 04:56:31,482 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=132, Invalid=468, Unknown=0, NotChecked=0, Total=600 [2020-10-27 04:56:31,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26918 states. [2020-10-27 04:56:33,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26918 to 18505. [2020-10-27 04:56:33,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18505 states. [2020-10-27 04:56:33,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18505 states to 18505 states and 24901 transitions. [2020-10-27 04:56:33,384 INFO L78 Accepts]: Start accepts. Automaton has 18505 states and 24901 transitions. Word has length 174 [2020-10-27 04:56:33,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:56:33,384 INFO L481 AbstractCegarLoop]: Abstraction has 18505 states and 24901 transitions. [2020-10-27 04:56:33,384 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 04:56:33,384 INFO L276 IsEmpty]: Start isEmpty. Operand 18505 states and 24901 transitions. [2020-10-27 04:56:33,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-27 04:56:33,395 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:56:33,395 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:56:33,395 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 04:56:33,395 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:56:33,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:56:33,396 INFO L82 PathProgramCache]: Analyzing trace with hash 418265549, now seen corresponding path program 1 times [2020-10-27 04:56:33,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:56:33,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [613678108] [2020-10-27 04:56:33,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:56:33,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:56:33,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:33,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:33,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:33,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:34,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:34,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:34,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:34,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:34,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:34,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:35,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:35,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:36,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:36,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:36,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:37,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:37,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:38,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:38,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:56:38,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-27 04:56:38,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-27 04:56:38,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-27 04:56:38,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:56:38,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:56:38,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:56:38,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-27 04:56:38,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:56:38,928 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-27 04:56:38,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:56:38,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:56:38,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:38,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:56:38,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:56:38,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:56:38,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 04:56:38,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:56:38,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:56:38,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:56:38,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:56:38,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:56:39,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:56:39,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [613678108] [2020-10-27 04:56:39,019 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:56:39,019 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 04:56:39,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147000128] [2020-10-27 04:56:39,019 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 04:56:39,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:56:39,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 04:56:39,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:56:39,020 INFO L87 Difference]: Start difference. First operand 18505 states and 24901 transitions. Second operand 7 states. [2020-10-27 04:56:39,503 WARN L193 SmtUtils]: Spent 417.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-27 04:56:43,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:56:43,411 INFO L93 Difference]: Finished difference Result 27859 states and 38833 transitions. [2020-10-27 04:56:43,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 04:56:43,411 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 174 [2020-10-27 04:56:43,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:56:43,430 INFO L225 Difference]: With dead ends: 27859 [2020-10-27 04:56:43,430 INFO L226 Difference]: Without dead ends: 16654 [2020-10-27 04:56:43,445 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:56:43,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16654 states. [2020-10-27 04:56:44,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16654 to 10863. [2020-10-27 04:56:44,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10863 states. [2020-10-27 04:56:44,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10863 states to 10863 states and 14351 transitions. [2020-10-27 04:56:44,640 INFO L78 Accepts]: Start accepts. Automaton has 10863 states and 14351 transitions. Word has length 174 [2020-10-27 04:56:44,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:56:44,640 INFO L481 AbstractCegarLoop]: Abstraction has 10863 states and 14351 transitions. [2020-10-27 04:56:44,640 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 04:56:44,640 INFO L276 IsEmpty]: Start isEmpty. Operand 10863 states and 14351 transitions. [2020-10-27 04:56:44,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-27 04:56:44,647 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:56:44,647 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:56:44,647 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 04:56:44,647 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:56:44,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:56:44,648 INFO L82 PathProgramCache]: Analyzing trace with hash -838157006, now seen corresponding path program 1 times [2020-10-27 04:56:44,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:56:44,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [123268352] [2020-10-27 04:56:44,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:56:44,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:56:44,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:44,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:44,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:44,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:45,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:45,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:49,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:56:49,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-27 04:56:49,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:56:49,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-27 04:56:49,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:56:49,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 04:56:49,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:56:49,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-27 04:56:49,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:56:50,549 WARN L193 SmtUtils]: Spent 405.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-27 04:56:50,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:56:50,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:56:50,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:50,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:56:50,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:56:50,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:56:50,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:56:50,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:56:50,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:56:50,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:56:50,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:56:50,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:56:50,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:56:50,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [123268352] [2020-10-27 04:56:50,709 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:56:50,709 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-27 04:56:50,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130710833] [2020-10-27 04:56:50,710 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 04:56:50,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:56:50,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 04:56:50,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-27 04:56:50,711 INFO L87 Difference]: Start difference. First operand 10863 states and 14351 transitions. Second operand 13 states. [2020-10-27 04:56:50,946 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 73 [2020-10-27 04:56:52,278 WARN L193 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 284 DAG size of output: 281 [2020-10-27 04:56:54,111 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-10-27 04:56:55,321 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2020-10-27 04:56:55,493 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-10-27 04:56:55,698 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-10-27 04:56:55,880 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-10-27 04:56:56,650 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-10-27 04:56:56,990 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-10-27 04:56:57,374 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-10-27 04:56:57,587 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2020-10-27 04:56:58,008 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-10-27 04:57:00,250 WARN L193 SmtUtils]: Spent 565.00 ms on a formula simplification that was a NOOP. DAG size: 240 [2020-10-27 04:57:00,807 WARN L193 SmtUtils]: Spent 463.00 ms on a formula simplification that was a NOOP. DAG size: 224 [2020-10-27 04:57:05,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:57:05,589 INFO L93 Difference]: Finished difference Result 34902 states and 47756 transitions. [2020-10-27 04:57:05,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-27 04:57:05,590 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 174 [2020-10-27 04:57:05,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:57:05,624 INFO L225 Difference]: With dead ends: 34902 [2020-10-27 04:57:05,624 INFO L226 Difference]: Without dead ends: 32121 [2020-10-27 04:57:05,633 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=293, Invalid=1113, Unknown=0, NotChecked=0, Total=1406 [2020-10-27 04:57:05,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32121 states.