/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 23:48:33,815 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 23:48:33,818 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 23:48:33,864 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 23:48:33,864 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 23:48:33,866 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 23:48:33,868 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 23:48:33,870 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 23:48:33,873 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 23:48:33,874 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 23:48:33,875 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 23:48:33,877 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 23:48:33,877 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 23:48:33,879 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 23:48:33,880 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 23:48:33,882 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 23:48:33,883 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 23:48:33,884 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 23:48:33,886 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 23:48:33,889 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 23:48:33,891 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 23:48:33,892 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 23:48:33,894 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 23:48:33,895 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 23:48:33,914 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 23:48:33,915 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 23:48:33,915 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 23:48:33,920 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 23:48:33,921 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 23:48:33,924 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 23:48:33,924 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 23:48:33,925 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 23:48:33,926 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 23:48:33,928 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 23:48:33,930 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 23:48:33,930 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 23:48:33,931 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 23:48:33,931 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 23:48:33,931 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 23:48:33,932 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 23:48:33,934 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 23:48:33,935 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 23:48:33,997 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 23:48:33,997 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 23:48:34,002 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 23:48:34,002 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 23:48:34,002 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 23:48:34,003 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 23:48:34,003 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 23:48:34,003 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 23:48:34,003 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 23:48:34,003 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 23:48:34,004 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 23:48:34,004 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 23:48:34,005 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 23:48:34,005 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 23:48:34,005 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 23:48:34,005 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 23:48:34,006 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 23:48:34,006 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 23:48:34,006 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 23:48:34,007 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 23:48:34,007 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 23:48:34,007 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 23:48:34,007 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 23:48:34,007 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 23:48:34,008 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 23:48:34,008 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 23:48:34,008 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 23:48:34,008 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 23:48:34,009 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 23:48:34,009 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 23:48:34,433 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 23:48:34,461 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 23:48:34,464 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 23:48:34,466 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 23:48:34,467 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 23:48:34,470 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.p+lhb-reducer.c [2020-10-27 23:48:34,559 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/278eb6ae3/2dc9bf69812f41e3b648cc13dbb287bd/FLAGf681ab1fa [2020-10-27 23:48:35,483 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 23:48:35,483 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.p+lhb-reducer.c [2020-10-27 23:48:35,497 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/278eb6ae3/2dc9bf69812f41e3b648cc13dbb287bd/FLAGf681ab1fa [2020-10-27 23:48:35,678 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/278eb6ae3/2dc9bf69812f41e3b648cc13dbb287bd [2020-10-27 23:48:35,682 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 23:48:35,691 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 23:48:35,695 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 23:48:35,695 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 23:48:35,699 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 23:48:35,700 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:48:35" (1/1) ... [2020-10-27 23:48:35,706 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6dc7aac0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:48:35, skipping insertion in model container [2020-10-27 23:48:35,707 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:48:35" (1/1) ... [2020-10-27 23:48:35,716 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 23:48:35,780 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 23:48:36,240 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 23:48:36,258 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 23:48:36,465 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 23:48:36,489 INFO L208 MainTranslator]: Completed translation [2020-10-27 23:48:36,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:48:36 WrapperNode [2020-10-27 23:48:36,490 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 23:48:36,491 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 23:48:36,491 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 23:48:36,491 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 23:48:36,509 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:48:36" (1/1) ... [2020-10-27 23:48:36,510 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:48:36" (1/1) ... [2020-10-27 23:48:36,531 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:48:36" (1/1) ... [2020-10-27 23:48:36,532 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:48:36" (1/1) ... [2020-10-27 23:48:36,560 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:48:36" (1/1) ... [2020-10-27 23:48:36,597 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:48:36" (1/1) ... [2020-10-27 23:48:36,610 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:48:36" (1/1) ... [2020-10-27 23:48:36,624 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 23:48:36,627 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 23:48:36,628 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 23:48:36,628 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 23:48:36,632 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:48:36" (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 23:48:36,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 23:48:36,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 23:48:36,725 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 23:48:36,725 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 23:48:36,726 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 23:48:36,726 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 23:48:36,726 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 23:48:36,727 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 23:48:36,727 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 23:48:36,727 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 23:48:36,728 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 23:48:36,728 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-27 23:48:36,728 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 23:48:36,729 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 23:48:36,729 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 23:48:36,732 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 23:48:36,732 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 23:48:36,732 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 23:48:36,732 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 23:48:36,733 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 23:48:36,733 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-27 23:48:36,733 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 23:48:36,733 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 23:48:36,733 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 23:48:36,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 23:48:36,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 23:48:36,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 23:48:36,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 23:48:36,734 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 23:48:36,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 23:48:38,168 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 23:48:38,169 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 23:48:38,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:48:38 BoogieIcfgContainer [2020-10-27 23:48:38,171 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 23:48:38,174 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 23:48:38,174 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 23:48:38,178 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 23:48:38,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 11:48:35" (1/3) ... [2020-10-27 23:48:38,179 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@389e879e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:48:38, skipping insertion in model container [2020-10-27 23:48:38,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:48:36" (2/3) ... [2020-10-27 23:48:38,180 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@389e879e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:48:38, skipping insertion in model container [2020-10-27 23:48:38,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:48:38" (3/3) ... [2020-10-27 23:48:38,182 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.1.ufo.UNBOUNDED.pals.c.p+lhb-reducer.c [2020-10-27 23:48:38,195 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 23:48:38,202 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 23:48:38,220 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 23:48:38,286 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 23:48:38,286 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 23:48:38,286 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 23:48:38,286 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 23:48:38,287 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 23:48:38,287 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 23:48:38,287 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 23:48:38,287 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 23:48:38,358 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states. [2020-10-27 23:48:38,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-27 23:48:38,381 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:48:38,382 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:48:38,383 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:48:38,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:48:38,390 INFO L82 PathProgramCache]: Analyzing trace with hash -1837561670, now seen corresponding path program 1 times [2020-10-27 23:48:38,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:48:38,400 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1497428427] [2020-10-27 23:48:38,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:48:38,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:48:38,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:39,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:39,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:39,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:39,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:39,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:39,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:39,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:39,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:40,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:41,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:42,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:43,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:48:43,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-27 23:48:43,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 23:48:43,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-27 23:48:43,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:48:43,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:48:43,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-27 23:48:43,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 23:48:43,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 23:48:44,232 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 23:48:44,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:48:44,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:48:44,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:44,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:48:44,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:48:44,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:48:44,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 23:48:44,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:48:44,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:48:44,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:48:44,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:48:44,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:48:44,325 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 23:48:44,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1497428427] [2020-10-27 23:48:44,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:48:44,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:48:44,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908196936] [2020-10-27 23:48:44,335 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:48:44,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:48:44,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:48:44,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:48:44,358 INFO L87 Difference]: Start difference. First operand 345 states. Second operand 5 states. [2020-10-27 23:48:46,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:48:46,103 INFO L93 Difference]: Finished difference Result 534 states and 862 transitions. [2020-10-27 23:48:46,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:48:46,105 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 132 [2020-10-27 23:48:46,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:48:46,123 INFO L225 Difference]: With dead ends: 534 [2020-10-27 23:48:46,124 INFO L226 Difference]: Without dead ends: 338 [2020-10-27 23:48:46,133 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 23:48:46,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2020-10-27 23:48:46,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 338. [2020-10-27 23:48:46,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 338 states. [2020-10-27 23:48:46,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 546 transitions. [2020-10-27 23:48:46,210 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 546 transitions. Word has length 132 [2020-10-27 23:48:46,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:48:46,211 INFO L481 AbstractCegarLoop]: Abstraction has 338 states and 546 transitions. [2020-10-27 23:48:46,211 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:48:46,211 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 546 transitions. [2020-10-27 23:48:46,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-27 23:48:46,219 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:48:46,219 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] [2020-10-27 23:48:46,219 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 23:48:46,220 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:48:46,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:48:46,221 INFO L82 PathProgramCache]: Analyzing trace with hash 1071280166, now seen corresponding path program 1 times [2020-10-27 23:48:46,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:48:46,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2001459164] [2020-10-27 23:48:46,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:48:46,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:48:46,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:46,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:46,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:46,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:46,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:46,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:46,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:46,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:46,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:47,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:47,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:48,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:51,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:48:51,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-27 23:48:51,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 23:48:51,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-27 23:48:51,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:48:51,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:48:51,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-27 23:48:51,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 23:48:51,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 23:48:51,633 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 23:48:51,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:48:51,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:48:51,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:51,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:48:51,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:48:51,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:48:51,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 23:48:51,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:48:51,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:48:51,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:48:51,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:48:51,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:48:51,738 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 23:48:51,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2001459164] [2020-10-27 23:48:51,739 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:48:51,739 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:48:51,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873033825] [2020-10-27 23:48:51,742 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:48:51,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:48:51,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:48:51,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:48:51,748 INFO L87 Difference]: Start difference. First operand 338 states and 546 transitions. Second operand 4 states. [2020-10-27 23:48:54,060 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 23:48:54,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:48:54,087 INFO L93 Difference]: Finished difference Result 799 states and 1272 transitions. [2020-10-27 23:48:54,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:48:54,088 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 134 [2020-10-27 23:48:54,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:48:54,093 INFO L225 Difference]: With dead ends: 799 [2020-10-27 23:48:54,094 INFO L226 Difference]: Without dead ends: 557 [2020-10-27 23:48:54,097 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:48:54,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2020-10-27 23:48:54,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 546. [2020-10-27 23:48:54,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 546 states. [2020-10-27 23:48:54,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 866 transitions. [2020-10-27 23:48:54,146 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 866 transitions. Word has length 134 [2020-10-27 23:48:54,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:48:54,147 INFO L481 AbstractCegarLoop]: Abstraction has 546 states and 866 transitions. [2020-10-27 23:48:54,147 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:48:54,147 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 866 transitions. [2020-10-27 23:48:54,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-27 23:48:54,154 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:48:54,154 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] [2020-10-27 23:48:54,155 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 23:48:54,155 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:48:54,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:48:54,156 INFO L82 PathProgramCache]: Analyzing trace with hash -407321624, now seen corresponding path program 1 times [2020-10-27 23:48:54,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:48:54,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1598907452] [2020-10-27 23:48:54,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:48:54,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:48:54,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:54,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:54,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:54,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:54,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:54,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:54,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:54,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:54,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:55,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:55,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:56,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:59,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:48:59,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-27 23:48:59,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 23:48:59,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-27 23:48:59,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:48:59,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:48:59,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-27 23:48:59,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 23:48:59,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:48:59,541 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 23:48:59,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:48:59,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:48:59,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:59,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:48:59,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:48:59,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:48:59,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 23:48:59,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:48:59,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:48:59,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:48:59,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:48:59,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 23:48:59,626 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 23:48:59,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1598907452] [2020-10-27 23:48:59,627 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:48:59,627 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:48:59,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739387564] [2020-10-27 23:48:59,628 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:48:59,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:48:59,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:48:59,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:48:59,631 INFO L87 Difference]: Start difference. First operand 546 states and 866 transitions. Second operand 4 states. [2020-10-27 23:48:59,967 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-27 23:49:01,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:49:01,810 INFO L93 Difference]: Finished difference Result 1387 states and 2178 transitions. [2020-10-27 23:49:01,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:49:01,811 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 135 [2020-10-27 23:49:01,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:49:01,818 INFO L225 Difference]: With dead ends: 1387 [2020-10-27 23:49:01,818 INFO L226 Difference]: Without dead ends: 990 [2020-10-27 23:49:01,820 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:49:01,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 990 states. [2020-10-27 23:49:01,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 990 to 955. [2020-10-27 23:49:01,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 955 states. [2020-10-27 23:49:01,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 955 states to 955 states and 1498 transitions. [2020-10-27 23:49:01,899 INFO L78 Accepts]: Start accepts. Automaton has 955 states and 1498 transitions. Word has length 135 [2020-10-27 23:49:01,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:49:01,899 INFO L481 AbstractCegarLoop]: Abstraction has 955 states and 1498 transitions. [2020-10-27 23:49:01,899 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:49:01,899 INFO L276 IsEmpty]: Start isEmpty. Operand 955 states and 1498 transitions. [2020-10-27 23:49:01,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-27 23:49:01,904 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:49:01,904 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] [2020-10-27 23:49:01,905 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 23:49:01,905 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:49:01,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:49:01,906 INFO L82 PathProgramCache]: Analyzing trace with hash 560548319, now seen corresponding path program 1 times [2020-10-27 23:49:01,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:49:01,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [539899071] [2020-10-27 23:49:01,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:49:01,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:49:01,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:01,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:02,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:02,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:02,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:02,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:02,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:02,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:02,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:02,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:03,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:03,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:03,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:06,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:49:06,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-27 23:49:06,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 23:49:06,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 23:49:06,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:49:06,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:49:06,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-10-27 23:49:06,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 23:49:06,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:49:07,260 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 23:49:07,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:49:07,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:49:07,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:07,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:49:07,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:49:07,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:49:07,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 23:49:07,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:49:07,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:49:07,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:49:07,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:49:07,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:49:07,320 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 23:49:07,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [539899071] [2020-10-27 23:49:07,321 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:49:07,321 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:49:07,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430150395] [2020-10-27 23:49:07,321 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:49:07,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:49:07,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:49:07,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:49:07,323 INFO L87 Difference]: Start difference. First operand 955 states and 1498 transitions. Second operand 4 states. [2020-10-27 23:49:07,610 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-27 23:49:10,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:49:10,054 INFO L93 Difference]: Finished difference Result 2073 states and 3232 transitions. [2020-10-27 23:49:10,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:49:10,055 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 137 [2020-10-27 23:49:10,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:49:10,068 INFO L225 Difference]: With dead ends: 2073 [2020-10-27 23:49:10,068 INFO L226 Difference]: Without dead ends: 1650 [2020-10-27 23:49:10,070 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:49:10,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1650 states. [2020-10-27 23:49:10,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1650 to 1487. [2020-10-27 23:49:10,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1487 states. [2020-10-27 23:49:10,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1487 states to 1487 states and 2314 transitions. [2020-10-27 23:49:10,179 INFO L78 Accepts]: Start accepts. Automaton has 1487 states and 2314 transitions. Word has length 137 [2020-10-27 23:49:10,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:49:10,182 INFO L481 AbstractCegarLoop]: Abstraction has 1487 states and 2314 transitions. [2020-10-27 23:49:10,182 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:49:10,183 INFO L276 IsEmpty]: Start isEmpty. Operand 1487 states and 2314 transitions. [2020-10-27 23:49:10,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-27 23:49:10,188 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:49:10,188 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:49:10,188 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 23:49:10,188 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:49:10,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:49:10,189 INFO L82 PathProgramCache]: Analyzing trace with hash 925851116, now seen corresponding path program 1 times [2020-10-27 23:49:10,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:49:10,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [561883830] [2020-10-27 23:49:10,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:49:10,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:49:10,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:10,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:10,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:10,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:10,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:10,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:10,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:10,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:10,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:10,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:11,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:11,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:11,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:11,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:11,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:12,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:15,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:49:15,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-27 23:49:15,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 23:49:15,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-27 23:49:15,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:49:15,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:49:15,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-27 23:49:15,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-27 23:49:15,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:49:15,604 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 23:49:15,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:49:15,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:49:15,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:15,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:49:15,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:49:15,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:49:15,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 23:49:15,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:49:15,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:49:15,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:49:15,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:49:15,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:49:15,684 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 23:49:15,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [561883830] [2020-10-27 23:49:15,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:49:15,685 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:49:15,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544438034] [2020-10-27 23:49:15,688 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:49:15,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:49:15,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:49:15,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:49:15,689 INFO L87 Difference]: Start difference. First operand 1487 states and 2314 transitions. Second operand 4 states. [2020-10-27 23:49:15,976 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2020-10-27 23:49:18,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:49:18,223 INFO L93 Difference]: Finished difference Result 3974 states and 6158 transitions. [2020-10-27 23:49:18,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:49:18,224 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 139 [2020-10-27 23:49:18,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:49:18,240 INFO L225 Difference]: With dead ends: 3974 [2020-10-27 23:49:18,241 INFO L226 Difference]: Without dead ends: 2821 [2020-10-27 23:49:18,245 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:49:18,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2821 states. [2020-10-27 23:49:18,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2821 to 2818. [2020-10-27 23:49:18,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2818 states. [2020-10-27 23:49:18,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2818 states to 2818 states and 4356 transitions. [2020-10-27 23:49:18,416 INFO L78 Accepts]: Start accepts. Automaton has 2818 states and 4356 transitions. Word has length 139 [2020-10-27 23:49:18,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:49:18,419 INFO L481 AbstractCegarLoop]: Abstraction has 2818 states and 4356 transitions. [2020-10-27 23:49:18,419 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:49:18,419 INFO L276 IsEmpty]: Start isEmpty. Operand 2818 states and 4356 transitions. [2020-10-27 23:49:18,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-27 23:49:18,427 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:49:18,427 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:49:18,428 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 23:49:18,428 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:49:18,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:49:18,429 INFO L82 PathProgramCache]: Analyzing trace with hash -1709894767, now seen corresponding path program 1 times [2020-10-27 23:49:18,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:49:18,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [106418414] [2020-10-27 23:49:18,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:49:18,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:49:18,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:18,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:18,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:18,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:18,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:18,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:18,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:18,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:18,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:19,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:19,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:19,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:19,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:19,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:23,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:49:23,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-27 23:49:23,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 23:49:23,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 23:49:23,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:49:23,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:49:23,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-27 23:49:23,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-27 23:49:23,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:49:23,803 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 23:49:23,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:49:23,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:49:23,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:23,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:49:23,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:49:23,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:49:23,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 23:49:23,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:49:23,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:49:23,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:49:23,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:49:23,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:49:23,873 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 23:49:23,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [106418414] [2020-10-27 23:49:23,875 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:49:23,876 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:49:23,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146833092] [2020-10-27 23:49:23,876 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:49:23,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:49:23,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:49:23,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:49:23,878 INFO L87 Difference]: Start difference. First operand 2818 states and 4356 transitions. Second operand 4 states. [2020-10-27 23:49:24,169 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-27 23:49:25,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:49:25,965 INFO L93 Difference]: Finished difference Result 7902 states and 12151 transitions. [2020-10-27 23:49:25,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:49:25,966 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 139 [2020-10-27 23:49:25,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:49:25,993 INFO L225 Difference]: With dead ends: 7902 [2020-10-27 23:49:25,993 INFO L226 Difference]: Without dead ends: 5333 [2020-10-27 23:49:26,001 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:49:26,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5333 states. [2020-10-27 23:49:26,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5333 to 5130. [2020-10-27 23:49:26,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5130 states. [2020-10-27 23:49:26,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5130 states to 5130 states and 7841 transitions. [2020-10-27 23:49:26,335 INFO L78 Accepts]: Start accepts. Automaton has 5130 states and 7841 transitions. Word has length 139 [2020-10-27 23:49:26,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:49:26,335 INFO L481 AbstractCegarLoop]: Abstraction has 5130 states and 7841 transitions. [2020-10-27 23:49:26,335 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:49:26,335 INFO L276 IsEmpty]: Start isEmpty. Operand 5130 states and 7841 transitions. [2020-10-27 23:49:26,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-27 23:49:26,350 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:49:26,350 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] [2020-10-27 23:49:26,350 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 23:49:26,350 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:49:26,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:49:26,351 INFO L82 PathProgramCache]: Analyzing trace with hash -11009457, now seen corresponding path program 1 times [2020-10-27 23:49:26,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:49:26,351 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [646612148] [2020-10-27 23:49:26,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:49:26,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:49:26,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:26,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:26,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:26,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:26,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:26,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:26,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:26,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:26,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:26,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:27,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:28,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:29,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:29,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:29,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:29,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:31,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:49:31,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-27 23:49:31,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 23:49:31,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 23:49:31,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:49:31,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:49:31,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-27 23:49:31,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 23:49:31,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-27 23:49:31,721 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 23:49:31,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:49:31,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:49:31,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:31,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:49:31,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:49:31,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:49:31,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 23:49:31,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:49:31,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:49:31,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:49:31,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:49:31,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:49:31,783 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 23:49:31,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [646612148] [2020-10-27 23:49:31,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:49:31,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:49:31,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128331401] [2020-10-27 23:49:31,785 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:49:31,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:49:31,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:49:31,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:49:31,786 INFO L87 Difference]: Start difference. First operand 5130 states and 7841 transitions. Second operand 4 states. [2020-10-27 23:49:32,140 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-27 23:49:34,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:49:34,406 INFO L93 Difference]: Finished difference Result 13960 states and 21191 transitions. [2020-10-27 23:49:34,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:49:34,414 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 141 [2020-10-27 23:49:34,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:49:34,466 INFO L225 Difference]: With dead ends: 13960 [2020-10-27 23:49:34,466 INFO L226 Difference]: Without dead ends: 9608 [2020-10-27 23:49:34,480 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:49:34,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9608 states. [2020-10-27 23:49:35,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9608 to 9157. [2020-10-27 23:49:35,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9157 states. [2020-10-27 23:49:35,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9157 states to 9157 states and 13780 transitions. [2020-10-27 23:49:35,072 INFO L78 Accepts]: Start accepts. Automaton has 9157 states and 13780 transitions. Word has length 141 [2020-10-27 23:49:35,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:49:35,073 INFO L481 AbstractCegarLoop]: Abstraction has 9157 states and 13780 transitions. [2020-10-27 23:49:35,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:49:35,073 INFO L276 IsEmpty]: Start isEmpty. Operand 9157 states and 13780 transitions. [2020-10-27 23:49:35,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-27 23:49:35,099 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:49:35,099 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] [2020-10-27 23:49:35,099 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 23:49:35,100 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:49:35,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:49:35,100 INFO L82 PathProgramCache]: Analyzing trace with hash 292170657, now seen corresponding path program 1 times [2020-10-27 23:49:35,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:49:35,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [696201553] [2020-10-27 23:49:35,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:49:35,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:49:35,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:35,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:35,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:35,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:35,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:35,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:35,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:35,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:35,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:35,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:35,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:36,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:37,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:39,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:39,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:40,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:40,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:49:40,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-27 23:49:40,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 23:49:40,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 23:49:40,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:49:40,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:49:40,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-27 23:49:40,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-27 23:49:40,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:49:40,507 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 23:49:40,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:49:40,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:49:40,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:40,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:49:40,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:49:40,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:49:40,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 23:49:40,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:49:40,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:49:40,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:49:40,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:49:40,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:49:40,566 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 23:49:40,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [696201553] [2020-10-27 23:49:40,566 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:49:40,567 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:49:40,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710232314] [2020-10-27 23:49:40,567 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:49:40,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:49:40,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:49:40,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:49:40,569 INFO L87 Difference]: Start difference. First operand 9157 states and 13780 transitions. Second operand 4 states. [2020-10-27 23:49:40,872 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-27 23:49:43,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:49:43,673 INFO L93 Difference]: Finished difference Result 25361 states and 37894 transitions. [2020-10-27 23:49:43,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:49:43,674 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2020-10-27 23:49:43,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:49:43,738 INFO L225 Difference]: With dead ends: 25361 [2020-10-27 23:49:43,738 INFO L226 Difference]: Without dead ends: 17236 [2020-10-27 23:49:43,762 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:49:43,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17236 states. [2020-10-27 23:49:44,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17236 to 16353. [2020-10-27 23:49:44,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16353 states. [2020-10-27 23:49:44,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16353 states to 16353 states and 24160 transitions. [2020-10-27 23:49:44,718 INFO L78 Accepts]: Start accepts. Automaton has 16353 states and 24160 transitions. Word has length 143 [2020-10-27 23:49:44,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:49:44,718 INFO L481 AbstractCegarLoop]: Abstraction has 16353 states and 24160 transitions. [2020-10-27 23:49:44,718 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:49:44,718 INFO L276 IsEmpty]: Start isEmpty. Operand 16353 states and 24160 transitions. [2020-10-27 23:49:44,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-27 23:49:44,764 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:49:44,765 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] [2020-10-27 23:49:44,765 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 23:49:44,765 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:49:44,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:49:44,766 INFO L82 PathProgramCache]: Analyzing trace with hash -1612755997, now seen corresponding path program 1 times [2020-10-27 23:49:44,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:49:44,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [87373727] [2020-10-27 23:49:44,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:49:44,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:49:44,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:44,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:44,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:44,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:44,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:45,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:45,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:45,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:45,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:45,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:45,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:45,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:45,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:46,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:46,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:47,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:49,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:49:49,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-27 23:49:49,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 23:49:49,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 23:49:49,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:49:49,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:49:49,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-27 23:49:49,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-27 23:49:49,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:49:50,110 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 23:49:50,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:49:50,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:49:50,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:50,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:49:50,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:49:50,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:49:50,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:49:50,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:49:50,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:49:50,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:49:50,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:49:50,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:49:50,150 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 23:49:50,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [87373727] [2020-10-27 23:49:50,151 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:49:50,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:49:50,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245694736] [2020-10-27 23:49:50,151 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:49:50,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:49:50,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:49:50,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:49:50,152 INFO L87 Difference]: Start difference. First operand 16353 states and 24160 transitions. Second operand 4 states. [2020-10-27 23:49:53,269 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 23:49:53,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:49:53,315 INFO L93 Difference]: Finished difference Result 39795 states and 58806 transitions. [2020-10-27 23:49:53,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:49:53,316 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 145 [2020-10-27 23:49:53,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:49:53,373 INFO L225 Difference]: With dead ends: 39795 [2020-10-27 23:49:53,374 INFO L226 Difference]: Without dead ends: 24162 [2020-10-27 23:49:53,413 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:49:53,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24162 states. [2020-10-27 23:49:54,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24162 to 22307. [2020-10-27 23:49:54,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22307 states. [2020-10-27 23:49:54,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22307 states to 22307 states and 32788 transitions. [2020-10-27 23:49:54,560 INFO L78 Accepts]: Start accepts. Automaton has 22307 states and 32788 transitions. Word has length 145 [2020-10-27 23:49:54,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:49:54,560 INFO L481 AbstractCegarLoop]: Abstraction has 22307 states and 32788 transitions. [2020-10-27 23:49:54,560 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:49:54,561 INFO L276 IsEmpty]: Start isEmpty. Operand 22307 states and 32788 transitions. [2020-10-27 23:49:54,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-27 23:49:54,607 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:49:54,607 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 23:49:54,607 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 23:49:54,607 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:49:54,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:49:54,608 INFO L82 PathProgramCache]: Analyzing trace with hash 2083847649, now seen corresponding path program 1 times [2020-10-27 23:49:54,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:49:54,609 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [536598744] [2020-10-27 23:49:54,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:49:54,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:49:54,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:54,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:54,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:54,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:54,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:55,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:56,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:56,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:56,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:59,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:49:59,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-27 23:49:59,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 23:49:59,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 23:49:59,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:49:59,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:49:59,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-10-27 23:49:59,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 23:49:59,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:50:00,016 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 23:50:00,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:50:00,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:50:00,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:00,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:50:00,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:50:00,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:50:00,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 23:50:00,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:50:00,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:50:00,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:50:00,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:50:00,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:50:00,077 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 23:50:00,078 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [536598744] [2020-10-27 23:50:00,078 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:50:00,078 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:50:00,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964548332] [2020-10-27 23:50:00,079 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:50:00,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:50:00,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:50:00,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:50:00,080 INFO L87 Difference]: Start difference. First operand 22307 states and 32788 transitions. Second operand 5 states. [2020-10-27 23:50:02,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:50:02,369 INFO L93 Difference]: Finished difference Result 28876 states and 42446 transitions. [2020-10-27 23:50:02,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:50:02,370 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2020-10-27 23:50:02,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:50:02,415 INFO L225 Difference]: With dead ends: 28876 [2020-10-27 23:50:02,415 INFO L226 Difference]: Without dead ends: 22179 [2020-10-27 23:50:02,437 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 23:50:02,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22179 states. [2020-10-27 23:50:03,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22179 to 19531. [2020-10-27 23:50:03,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19531 states. [2020-10-27 23:50:03,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19531 states to 19531 states and 28634 transitions. [2020-10-27 23:50:03,495 INFO L78 Accepts]: Start accepts. Automaton has 19531 states and 28634 transitions. Word has length 147 [2020-10-27 23:50:03,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:50:03,495 INFO L481 AbstractCegarLoop]: Abstraction has 19531 states and 28634 transitions. [2020-10-27 23:50:03,495 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:50:03,495 INFO L276 IsEmpty]: Start isEmpty. Operand 19531 states and 28634 transitions. [2020-10-27 23:50:03,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-27 23:50:03,519 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:50:03,519 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 23:50:03,519 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 23:50:03,519 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:50:03,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:50:03,520 INFO L82 PathProgramCache]: Analyzing trace with hash -1300681538, now seen corresponding path program 1 times [2020-10-27 23:50:03,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:50:03,520 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2089441143] [2020-10-27 23:50:03,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:50:03,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:50:03,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:03,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:03,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:03,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:03,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:03,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:03,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:08,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:50:08,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-27 23:50:08,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 23:50:08,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-27 23:50:08,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:50:08,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:50:08,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-27 23:50:08,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 23:50:08,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:50:08,865 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 23:50:08,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:50:08,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:50:08,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:08,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:50:08,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:50:08,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:50:08,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 23:50:08,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:50:08,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:50:08,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:50:08,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:50:08,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:50:08,902 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 23:50:08,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2089441143] [2020-10-27 23:50:08,903 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:50:08,903 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:50:08,903 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252210887] [2020-10-27 23:50:08,904 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:50:08,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:50:08,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:50:08,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:50:08,905 INFO L87 Difference]: Start difference. First operand 19531 states and 28634 transitions. Second operand 5 states. [2020-10-27 23:50:11,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:50:11,001 INFO L93 Difference]: Finished difference Result 29660 states and 43404 transitions. [2020-10-27 23:50:11,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:50:11,002 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-10-27 23:50:11,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:50:11,037 INFO L225 Difference]: With dead ends: 29660 [2020-10-27 23:50:11,037 INFO L226 Difference]: Without dead ends: 19531 [2020-10-27 23:50:11,063 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 23:50:11,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19531 states. [2020-10-27 23:50:12,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19531 to 17687. [2020-10-27 23:50:12,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17687 states. [2020-10-27 23:50:12,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17687 states to 17687 states and 25810 transitions. [2020-10-27 23:50:12,104 INFO L78 Accepts]: Start accepts. Automaton has 17687 states and 25810 transitions. Word has length 152 [2020-10-27 23:50:12,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:50:12,104 INFO L481 AbstractCegarLoop]: Abstraction has 17687 states and 25810 transitions. [2020-10-27 23:50:12,104 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:50:12,105 INFO L276 IsEmpty]: Start isEmpty. Operand 17687 states and 25810 transitions. [2020-10-27 23:50:12,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-27 23:50:12,122 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:50:12,123 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] [2020-10-27 23:50:12,123 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 23:50:12,123 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:50:12,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:50:12,124 INFO L82 PathProgramCache]: Analyzing trace with hash 1889183176, now seen corresponding path program 1 times [2020-10-27 23:50:12,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:50:12,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [81819476] [2020-10-27 23:50:12,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:50:12,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:50:12,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:12,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:12,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:12,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:12,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:12,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:12,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:12,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:13,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:13,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:15,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:17,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:50:17,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-27 23:50:17,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 23:50:17,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-27 23:50:17,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:50:17,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:50:17,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-27 23:50:17,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-27 23:50:17,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:50:17,498 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 23:50:17,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:50:17,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:50:17,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:17,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:50:17,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:50:17,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:50:17,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 23:50:17,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:50:17,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:50:17,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:50:17,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:50:17,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:50:17,534 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 23:50:17,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [81819476] [2020-10-27 23:50:17,534 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:50:17,534 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 23:50:17,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052684161] [2020-10-27 23:50:17,535 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 23:50:17,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:50:17,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 23:50:17,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 23:50:17,536 INFO L87 Difference]: Start difference. First operand 17687 states and 25810 transitions. Second operand 6 states. [2020-10-27 23:50:22,151 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-27 23:50:22,459 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2020-10-27 23:50:22,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:50:22,688 INFO L93 Difference]: Finished difference Result 39606 states and 57757 transitions. [2020-10-27 23:50:22,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 23:50:22,688 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 153 [2020-10-27 23:50:22,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:50:22,729 INFO L225 Difference]: With dead ends: 39606 [2020-10-27 23:50:22,729 INFO L226 Difference]: Without dead ends: 22589 [2020-10-27 23:50:22,762 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 23:50:22,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22589 states. [2020-10-27 23:50:23,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22589 to 17709. [2020-10-27 23:50:23,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17709 states. [2020-10-27 23:50:23,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17709 states to 17709 states and 25497 transitions. [2020-10-27 23:50:23,759 INFO L78 Accepts]: Start accepts. Automaton has 17709 states and 25497 transitions. Word has length 153 [2020-10-27 23:50:23,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:50:23,760 INFO L481 AbstractCegarLoop]: Abstraction has 17709 states and 25497 transitions. [2020-10-27 23:50:23,760 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 23:50:23,760 INFO L276 IsEmpty]: Start isEmpty. Operand 17709 states and 25497 transitions. [2020-10-27 23:50:23,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-27 23:50:23,780 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:50:23,780 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] [2020-10-27 23:50:23,780 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 23:50:23,781 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:50:23,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:50:23,781 INFO L82 PathProgramCache]: Analyzing trace with hash -293865412, now seen corresponding path program 1 times [2020-10-27 23:50:23,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:50:23,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [537234986] [2020-10-27 23:50:23,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:50:23,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:50:23,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:23,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:23,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:23,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:24,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:24,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:24,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:24,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:25,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:25,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:28,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:50:28,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-27 23:50:28,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 23:50:28,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 23:50:28,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:50:28,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:50:28,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-27 23:50:28,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-27 23:50:28,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:50:29,112 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 23:50:29,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:50:29,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:50:29,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:29,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:50:29,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:50:29,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:50:29,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 23:50:29,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:50:29,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:50:29,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:50:29,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:50:29,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:50:29,162 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 23:50:29,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [537234986] [2020-10-27 23:50:29,162 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:50:29,162 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:50:29,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078792755] [2020-10-27 23:50:29,163 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:50:29,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:50:29,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:50:29,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:50:29,164 INFO L87 Difference]: Start difference. First operand 17709 states and 25497 transitions. Second operand 4 states. [2020-10-27 23:50:31,745 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-27 23:50:32,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:50:32,111 INFO L93 Difference]: Finished difference Result 34891 states and 50109 transitions. [2020-10-27 23:50:32,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:50:32,112 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 153 [2020-10-27 23:50:32,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:50:32,144 INFO L225 Difference]: With dead ends: 34891 [2020-10-27 23:50:32,145 INFO L226 Difference]: Without dead ends: 20333 [2020-10-27 23:50:32,164 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:50:32,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20333 states. [2020-10-27 23:50:33,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20333 to 20327. [2020-10-27 23:50:33,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20327 states. [2020-10-27 23:50:33,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20327 states to 20327 states and 29102 transitions. [2020-10-27 23:50:33,139 INFO L78 Accepts]: Start accepts. Automaton has 20327 states and 29102 transitions. Word has length 153 [2020-10-27 23:50:33,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:50:33,140 INFO L481 AbstractCegarLoop]: Abstraction has 20327 states and 29102 transitions. [2020-10-27 23:50:33,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:50:33,140 INFO L276 IsEmpty]: Start isEmpty. Operand 20327 states and 29102 transitions. [2020-10-27 23:50:33,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-27 23:50:33,164 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:50:33,164 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] [2020-10-27 23:50:33,164 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 23:50:33,164 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:50:33,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:50:33,165 INFO L82 PathProgramCache]: Analyzing trace with hash -54401852, now seen corresponding path program 1 times [2020-10-27 23:50:33,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:50:33,165 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [178939554] [2020-10-27 23:50:33,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:50:33,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:50:33,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:33,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:33,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:33,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:33,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:38,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:50:38,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-27 23:50:38,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 23:50:38,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 23:50:38,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:50:38,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:50:38,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-27 23:50:38,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 23:50:38,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:50:38,512 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 23:50:38,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:50:38,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:50:38,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:38,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:50:38,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:50:38,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:50:38,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 23:50:38,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:50:38,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:50:38,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:50:38,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:50:38,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:50:38,559 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 23:50:38,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [178939554] [2020-10-27 23:50:38,560 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:50:38,560 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:50:38,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640799829] [2020-10-27 23:50:38,560 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:50:38,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:50:38,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:50:38,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:50:38,561 INFO L87 Difference]: Start difference. First operand 20327 states and 29102 transitions. Second operand 5 states. [2020-10-27 23:50:40,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:50:40,882 INFO L93 Difference]: Finished difference Result 38466 states and 55000 transitions. [2020-10-27 23:50:40,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:50:40,883 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 155 [2020-10-27 23:50:40,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:50:40,904 INFO L225 Difference]: With dead ends: 38466 [2020-10-27 23:50:40,905 INFO L226 Difference]: Without dead ends: 18953 [2020-10-27 23:50:40,921 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 23:50:40,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18953 states. [2020-10-27 23:50:41,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18953 to 18953. [2020-10-27 23:50:41,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18953 states. [2020-10-27 23:50:41,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18953 states to 18953 states and 27097 transitions. [2020-10-27 23:50:41,771 INFO L78 Accepts]: Start accepts. Automaton has 18953 states and 27097 transitions. Word has length 155 [2020-10-27 23:50:41,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:50:41,772 INFO L481 AbstractCegarLoop]: Abstraction has 18953 states and 27097 transitions. [2020-10-27 23:50:41,772 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:50:41,772 INFO L276 IsEmpty]: Start isEmpty. Operand 18953 states and 27097 transitions. [2020-10-27 23:50:41,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-27 23:50:41,788 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:50:41,788 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] [2020-10-27 23:50:41,789 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 23:50:41,789 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:50:41,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:50:41,789 INFO L82 PathProgramCache]: Analyzing trace with hash -868875297, now seen corresponding path program 1 times [2020-10-27 23:50:41,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:50:41,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [530420130] [2020-10-27 23:50:41,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:50:41,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:50:41,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:41,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:41,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:43,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:46,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:50:46,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-27 23:50:46,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 23:50:46,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4447 [2020-10-27 23:50:46,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:50:46,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 23:50:46,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-27 23:50:46,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-27 23:50:46,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:50:47,000 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 23:50:47,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:50:47,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:50:47,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:47,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:50:47,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:50:47,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:50:47,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 23:50:47,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:50:47,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:50:47,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:50:47,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:50:47,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:50:47,148 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 23:50:47,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [530420130] [2020-10-27 23:50:47,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:50:47,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-27 23:50:47,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760963705] [2020-10-27 23:50:47,150 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 23:50:47,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:50:47,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 23:50:47,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-27 23:50:47,151 INFO L87 Difference]: Start difference. First operand 18953 states and 27097 transitions. Second operand 12 states. [2020-10-27 23:50:47,684 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2020-10-27 23:50:51,354 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 45 [2020-10-27 23:50:52,256 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2020-10-27 23:50:57,671 WARN L193 SmtUtils]: Spent 4.48 s on a formula simplification. DAG size of input: 64 DAG size of output: 53 [2020-10-27 23:51:04,376 WARN L193 SmtUtils]: Spent 6.57 s on a formula simplification. DAG size of input: 57 DAG size of output: 51 [2020-10-27 23:51:13,078 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 51 [2020-10-27 23:51:13,345 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2020-10-27 23:51:13,630 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 41 [2020-10-27 23:51:24,580 WARN L193 SmtUtils]: Spent 10.70 s on a formula simplification. DAG size of input: 59 DAG size of output: 49 [2020-10-27 23:51:35,177 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 45 [2020-10-27 23:51:39,726 WARN L193 SmtUtils]: Spent 4.43 s on a formula simplification. DAG size of input: 59 DAG size of output: 53 [2020-10-27 23:51:43,187 WARN L193 SmtUtils]: Spent 862.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 201 [2020-10-27 23:51:43,537 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2020-10-27 23:51:43,911 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-27 23:51:44,831 WARN L193 SmtUtils]: Spent 853.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 200 [2020-10-27 23:51:57,983 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 47 [2020-10-27 23:51:58,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:51:58,983 INFO L93 Difference]: Finished difference Result 70514 states and 99990 transitions. [2020-10-27 23:51:58,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-10-27 23:51:58,984 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 156 [2020-10-27 23:51:58,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:51:59,048 INFO L225 Difference]: With dead ends: 70514 [2020-10-27 23:51:59,049 INFO L226 Difference]: Without dead ends: 53903 [2020-10-27 23:51:59,076 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 897 ImplicationChecksByTransitivity, 34.4s TimeCoverageRelationStatistics Valid=563, Invalid=2628, Unknown=1, NotChecked=0, Total=3192 [2020-10-27 23:51:59,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53903 states. [2020-10-27 23:52:01,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53903 to 22115. [2020-10-27 23:52:01,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22115 states. [2020-10-27 23:52:01,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22115 states to 22115 states and 31327 transitions. [2020-10-27 23:52:01,489 INFO L78 Accepts]: Start accepts. Automaton has 22115 states and 31327 transitions. Word has length 156 [2020-10-27 23:52:01,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:52:01,490 INFO L481 AbstractCegarLoop]: Abstraction has 22115 states and 31327 transitions. [2020-10-27 23:52:01,490 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 23:52:01,490 INFO L276 IsEmpty]: Start isEmpty. Operand 22115 states and 31327 transitions. [2020-10-27 23:52:01,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-27 23:52:01,507 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:52:01,507 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] [2020-10-27 23:52:01,507 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 23:52:01,507 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:52:01,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:52:01,507 INFO L82 PathProgramCache]: Analyzing trace with hash -132773415, now seen corresponding path program 1 times [2020-10-27 23:52:01,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:52:01,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [361827991] [2020-10-27 23:52:01,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:52:01,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:52:01,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:01,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:01,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:03,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:03,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:03,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:04,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:04,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:04,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:04,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:04,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:06,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:06,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:52:06,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-27 23:52:06,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 23:52:06,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 23:52:06,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:52:06,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 23:52:06,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-27 23:52:06,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-27 23:52:06,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:52:07,050 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 27 [2020-10-27 23:52:07,400 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 23:52:07,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:52:07,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:52:07,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:07,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:52:07,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:52:07,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:52:07,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 23:52:07,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:52:07,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:52:07,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:52:07,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:52:07,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:52:07,469 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 23:52:07,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [361827991] [2020-10-27 23:52:07,469 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:52:07,469 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-27 23:52:07,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7635901] [2020-10-27 23:52:07,470 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 23:52:07,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:52:07,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 23:52:07,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-27 23:52:07,471 INFO L87 Difference]: Start difference. First operand 22115 states and 31327 transitions. Second operand 12 states. [2020-10-27 23:52:07,934 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-27 23:52:12,084 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 34 [2020-10-27 23:52:12,329 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 36