/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 05:49:13,830 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 05:49:13,833 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 05:49:13,885 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 05:49:13,885 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 05:49:13,892 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 05:49:13,894 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 05:49:13,899 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 05:49:13,902 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 05:49:13,908 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 05:49:13,909 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 05:49:13,910 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 05:49:13,911 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 05:49:13,915 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 05:49:13,918 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 05:49:13,921 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 05:49:13,922 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 05:49:13,926 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 05:49:13,934 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 05:49:13,941 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 05:49:13,943 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 05:49:13,945 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 05:49:13,946 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 05:49:13,947 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 05:49:13,950 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 05:49:13,950 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 05:49:13,951 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 05:49:13,952 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 05:49:13,952 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 05:49:13,953 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 05:49:13,954 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 05:49:13,955 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 05:49:13,955 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 05:49:13,956 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 05:49:13,958 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 05:49:13,958 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 05:49:13,959 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 05:49:13,959 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 05:49:13,973 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 05:49:13,974 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 05:49:13,975 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 05:49:13,977 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 05:49:14,025 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 05:49:14,026 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 05:49:14,030 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 05:49:14,031 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 05:49:14,031 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 05:49:14,031 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 05:49:14,032 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 05:49:14,032 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 05:49:14,032 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 05:49:14,032 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 05:49:14,033 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 05:49:14,034 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 05:49:14,034 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 05:49:14,034 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 05:49:14,034 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 05:49:14,035 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 05:49:14,035 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 05:49:14,035 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 05:49:14,035 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 05:49:14,036 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 05:49:14,036 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 05:49:14,036 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 05:49:14,037 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 05:49:14,037 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 05:49:14,037 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 05:49:14,037 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 05:49:14,037 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 05:49:14,038 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 05:49:14,038 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 05:49:14,038 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 05:49:14,463 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 05:49:14,500 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 05:49:14,504 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 05:49:14,506 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 05:49:14,506 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 05:49:14,508 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-27 05:49:14,608 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cb5f30b99/8963871955a14c008955c2c6cdd5c495/FLAG1a68a4a42 [2020-10-27 05:49:15,613 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 05:49:15,614 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-27 05:49:15,644 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cb5f30b99/8963871955a14c008955c2c6cdd5c495/FLAG1a68a4a42 [2020-10-27 05:49:16,130 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cb5f30b99/8963871955a14c008955c2c6cdd5c495 [2020-10-27 05:49:16,133 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 05:49:16,139 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 05:49:16,141 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 05:49:16,142 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 05:49:16,146 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 05:49:16,146 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:49:16" (1/1) ... [2020-10-27 05:49:16,150 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71b9e684 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:49:16, skipping insertion in model container [2020-10-27 05:49:16,151 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:49:16" (1/1) ... [2020-10-27 05:49:16,160 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 05:49:16,396 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 05:49:17,714 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:49:17,739 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 05:49:18,388 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:49:18,435 INFO L208 MainTranslator]: Completed translation [2020-10-27 05:49:18,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:49:18 WrapperNode [2020-10-27 05:49:18,437 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 05:49:18,438 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 05:49:18,439 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 05:49:18,439 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 05:49:18,457 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:49:18" (1/1) ... [2020-10-27 05:49:18,459 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:49:18" (1/1) ... [2020-10-27 05:49:18,548 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:49:18" (1/1) ... [2020-10-27 05:49:18,549 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:49:18" (1/1) ... [2020-10-27 05:49:18,660 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:49:18" (1/1) ... [2020-10-27 05:49:18,708 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:49:18" (1/1) ... [2020-10-27 05:49:18,729 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:49:18" (1/1) ... [2020-10-27 05:49:18,758 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 05:49:18,759 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 05:49:18,759 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 05:49:18,760 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 05:49:18,761 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:49:18" (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 05:49:18,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 05:49:18,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 05:49:18,852 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 05:49:18,852 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 05:49:18,852 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 05:49:18,853 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 05:49:18,853 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 05:49:18,853 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 05:49:18,853 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 05:49:18,853 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 05:49:18,854 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 05:49:18,854 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-27 05:49:18,854 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 05:49:18,854 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 05:49:18,854 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 05:49:18,854 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 05:49:18,855 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 05:49:18,855 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 05:49:18,855 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 05:49:18,855 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 05:49:18,855 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-27 05:49:18,855 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 05:49:18,856 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 05:49:18,856 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 05:49:18,856 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 05:49:18,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 05:49:18,856 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 05:49:18,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 05:49:18,856 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 05:49:18,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 05:49:24,743 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 05:49:24,743 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 05:49:24,748 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:49:24 BoogieIcfgContainer [2020-10-27 05:49:24,748 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 05:49:24,750 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 05:49:24,750 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 05:49:24,754 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 05:49:24,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:49:16" (1/3) ... [2020-10-27 05:49:24,755 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6257d21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:49:24, skipping insertion in model container [2020-10-27 05:49:24,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:49:18" (2/3) ... [2020-10-27 05:49:24,755 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6257d21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:49:24, skipping insertion in model container [2020-10-27 05:49:24,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:49:24" (3/3) ... [2020-10-27 05:49:24,757 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-27 05:49:24,770 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 05:49:24,777 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 05:49:24,792 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 05:49:24,832 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 05:49:24,832 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 05:49:24,832 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 05:49:24,833 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 05:49:24,833 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 05:49:24,833 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 05:49:24,833 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 05:49:24,833 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 05:49:24,886 INFO L276 IsEmpty]: Start isEmpty. Operand 1760 states. [2020-10-27 05:49:24,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-27 05:49:24,926 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:49:24,927 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:49:24,928 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:49:24,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:49:24,936 INFO L82 PathProgramCache]: Analyzing trace with hash -634912560, now seen corresponding path program 1 times [2020-10-27 05:49:24,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:49:24,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1933091676] [2020-10-27 05:49:24,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:49:25,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:49:25,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:49:26,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:49:26,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:49:27,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:49:27,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:49:28,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:49:30,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:49:30,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 05:49:30,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 05:49:30,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 05:49:30,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:49:30,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:49:30,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:49:30,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-27 05:49:30,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 05:49:33,819 WARN L193 SmtUtils]: Spent 3.01 s on a formula simplification that was a NOOP. DAG size: 649 [2020-10-27 05:49:33,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:49:33,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:49:33,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:49:33,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:49:33,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:49:33,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:49:33,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-27 05:49:33,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:49:33,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:49:33,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:49:33,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:49:33,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:49:34,036 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 05:49:34,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1933091676] [2020-10-27 05:49:34,039 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:49:34,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:49:34,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776617478] [2020-10-27 05:49:34,045 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:49:34,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:49:34,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:49:34,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:49:34,063 INFO L87 Difference]: Start difference. First operand 1760 states. Second operand 6 states. [2020-10-27 05:49:36,795 WARN L193 SmtUtils]: Spent 2.58 s on a formula simplification that was a NOOP. DAG size: 655 [2020-10-27 05:49:53,305 WARN L193 SmtUtils]: Spent 2.63 s on a formula simplification that was a NOOP. DAG size: 654 [2020-10-27 05:49:54,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:49:54,364 INFO L93 Difference]: Finished difference Result 2755 states and 4884 transitions. [2020-10-27 05:49:54,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 05:49:54,370 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 80 [2020-10-27 05:49:54,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:49:54,423 INFO L225 Difference]: With dead ends: 2755 [2020-10-27 05:49:54,423 INFO L226 Difference]: Without dead ends: 1525 [2020-10-27 05:49:54,436 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-27 05:49:54,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1525 states. [2020-10-27 05:49:54,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1525 to 1518. [2020-10-27 05:49:54,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1518 states. [2020-10-27 05:49:54,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1518 states to 1518 states and 2068 transitions. [2020-10-27 05:49:54,610 INFO L78 Accepts]: Start accepts. Automaton has 1518 states and 2068 transitions. Word has length 80 [2020-10-27 05:49:54,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:49:54,611 INFO L481 AbstractCegarLoop]: Abstraction has 1518 states and 2068 transitions. [2020-10-27 05:49:54,611 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:49:54,611 INFO L276 IsEmpty]: Start isEmpty. Operand 1518 states and 2068 transitions. [2020-10-27 05:49:54,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-27 05:49:54,620 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:49:54,621 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:49:54,621 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 05:49:54,621 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:49:54,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:49:54,623 INFO L82 PathProgramCache]: Analyzing trace with hash 834403514, now seen corresponding path program 1 times [2020-10-27 05:49:54,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:49:54,624 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1344512172] [2020-10-27 05:49:54,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:49:54,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:49:54,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:49:54,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:49:55,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:49:55,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:49:55,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:49:56,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:49:57,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:49:59,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:49:59,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 05:49:59,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 05:49:59,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-27 05:49:59,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:49:59,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 05:49:59,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:49:59,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 05:49:59,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:50:02,736 WARN L193 SmtUtils]: Spent 2.55 s on a formula simplification that was a NOOP. DAG size: 649 [2020-10-27 05:50:02,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:50:02,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:50:02,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:50:02,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:50:02,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:50:02,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:50:02,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-27 05:50:02,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:50:02,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:50:02,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:50:02,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:50:02,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:50:02,933 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 05:50:02,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1344512172] [2020-10-27 05:50:02,934 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:50:02,934 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 05:50:02,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604318379] [2020-10-27 05:50:02,935 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 05:50:02,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:50:02,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 05:50:02,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-27 05:50:02,937 INFO L87 Difference]: Start difference. First operand 1518 states and 2068 transitions. Second operand 10 states. [2020-10-27 05:50:05,974 WARN L193 SmtUtils]: Spent 2.86 s on a formula simplification that was a NOOP. DAG size: 671 [2020-10-27 05:50:27,347 WARN L193 SmtUtils]: Spent 5.54 s on a formula simplification. DAG size of input: 676 DAG size of output: 668 [2020-10-27 05:50:33,145 WARN L193 SmtUtils]: Spent 5.39 s on a formula simplification. DAG size of input: 668 DAG size of output: 659 [2020-10-27 05:50:36,116 WARN L193 SmtUtils]: Spent 2.78 s on a formula simplification that was a NOOP. DAG size: 672 [2020-10-27 05:50:39,072 WARN L193 SmtUtils]: Spent 2.62 s on a formula simplification that was a NOOP. DAG size: 654 [2020-10-27 05:50:44,905 WARN L193 SmtUtils]: Spent 2.84 s on a formula simplification that was a NOOP. DAG size: 663 [2020-10-27 05:50:47,848 WARN L193 SmtUtils]: Spent 2.88 s on a formula simplification that was a NOOP. DAG size: 664 [2020-10-27 05:50:48,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:50:48,174 INFO L93 Difference]: Finished difference Result 5750 states and 8568 transitions. [2020-10-27 05:50:48,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-27 05:50:48,175 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 81 [2020-10-27 05:50:48,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:50:48,206 INFO L225 Difference]: With dead ends: 5750 [2020-10-27 05:50:48,207 INFO L226 Difference]: Without dead ends: 5534 [2020-10-27 05:50:48,211 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 28.8s TimeCoverageRelationStatistics Valid=307, Invalid=1025, Unknown=0, NotChecked=0, Total=1332 [2020-10-27 05:50:48,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5534 states. [2020-10-27 05:50:48,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5534 to 2863. [2020-10-27 05:50:48,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2863 states. [2020-10-27 05:50:48,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2863 states to 2863 states and 4067 transitions. [2020-10-27 05:50:48,440 INFO L78 Accepts]: Start accepts. Automaton has 2863 states and 4067 transitions. Word has length 81 [2020-10-27 05:50:48,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:50:48,441 INFO L481 AbstractCegarLoop]: Abstraction has 2863 states and 4067 transitions. [2020-10-27 05:50:48,441 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 05:50:48,441 INFO L276 IsEmpty]: Start isEmpty. Operand 2863 states and 4067 transitions. [2020-10-27 05:50:48,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-27 05:50:48,447 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:50:48,447 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:50:48,447 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 05:50:48,448 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:50:48,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:50:48,449 INFO L82 PathProgramCache]: Analyzing trace with hash 1527136135, now seen corresponding path program 1 times [2020-10-27 05:50:48,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:50:48,449 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [135132111] [2020-10-27 05:50:48,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:50:48,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:50:48,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:50:48,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:50:48,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:50:49,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:50:49,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:50:53,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:50:53,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 05:50:53,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 05:50:53,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-27 05:50:53,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:50:53,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 05:50:53,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:50:53,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 05:50:53,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:50:56,676 WARN L193 SmtUtils]: Spent 2.78 s on a formula simplification that was a NOOP. DAG size: 649 [2020-10-27 05:50:56,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:50:56,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:50:56,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:50:56,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:50:56,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:50:56,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:50:56,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-27 05:50:56,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:50:56,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:50:56,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:50:56,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:50:56,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:50:56,865 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 05:50:56,866 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [135132111] [2020-10-27 05:50:56,866 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:50:56,866 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 05:50:56,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901594937] [2020-10-27 05:50:56,867 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 05:50:56,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:50:56,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 05:50:56,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-27 05:50:56,868 INFO L87 Difference]: Start difference. First operand 2863 states and 4067 transitions. Second operand 8 states. [2020-10-27 05:50:59,780 WARN L193 SmtUtils]: Spent 2.79 s on a formula simplification that was a NOOP. DAG size: 656 [2020-10-27 05:51:13,473 WARN L193 SmtUtils]: Spent 2.84 s on a formula simplification that was a NOOP. DAG size: 660 [2020-10-27 05:51:18,158 WARN L193 SmtUtils]: Spent 2.80 s on a formula simplification that was a NOOP. DAG size: 658 [2020-10-27 05:51:18,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:51:18,406 INFO L93 Difference]: Finished difference Result 7217 states and 10900 transitions. [2020-10-27 05:51:18,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 05:51:18,407 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 81 [2020-10-27 05:51:18,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:51:18,440 INFO L225 Difference]: With dead ends: 7217 [2020-10-27 05:51:18,440 INFO L226 Difference]: Without dead ends: 6310 [2020-10-27 05:51:18,445 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-10-27 05:51:18,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6310 states. [2020-10-27 05:51:18,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6310 to 2925. [2020-10-27 05:51:18,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2925 states. [2020-10-27 05:51:18,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2925 states to 2925 states and 4140 transitions. [2020-10-27 05:51:18,692 INFO L78 Accepts]: Start accepts. Automaton has 2925 states and 4140 transitions. Word has length 81 [2020-10-27 05:51:18,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:51:18,693 INFO L481 AbstractCegarLoop]: Abstraction has 2925 states and 4140 transitions. [2020-10-27 05:51:18,693 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 05:51:18,693 INFO L276 IsEmpty]: Start isEmpty. Operand 2925 states and 4140 transitions. [2020-10-27 05:51:18,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-27 05:51:18,699 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:51:18,699 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:51:18,699 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 05:51:18,700 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:51:18,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:51:18,700 INFO L82 PathProgramCache]: Analyzing trace with hash -2121449534, now seen corresponding path program 1 times [2020-10-27 05:51:18,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:51:18,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1675009794] [2020-10-27 05:51:18,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:51:18,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:51:18,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:51:18,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:51:19,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:51:20,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:51:21,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:51:22,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:51:23,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:51:23,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 05:51:23,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 05:51:23,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-27 05:51:23,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:51:23,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 05:51:23,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:51:23,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-27 05:51:23,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:51:26,925 WARN L193 SmtUtils]: Spent 2.74 s on a formula simplification that was a NOOP. DAG size: 649 [2020-10-27 05:51:26,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:51:26,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:51:26,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:51:27,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:51:27,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:51:27,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:51:27,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-27 05:51:27,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:51:27,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:51:27,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:51:27,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:51:27,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:51:27,100 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 05:51:27,100 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1675009794] [2020-10-27 05:51:27,100 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:51:27,101 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 05:51:27,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456231985] [2020-10-27 05:51:27,101 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 05:51:27,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:51:27,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 05:51:27,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-27 05:51:27,103 INFO L87 Difference]: Start difference. First operand 2925 states and 4140 transitions. Second operand 8 states. [2020-10-27 05:51:30,020 WARN L193 SmtUtils]: Spent 2.80 s on a formula simplification that was a NOOP. DAG size: 656 [2020-10-27 05:51:43,907 WARN L193 SmtUtils]: Spent 2.85 s on a formula simplification that was a NOOP. DAG size: 660 [2020-10-27 05:51:48,613 WARN L193 SmtUtils]: Spent 2.83 s on a formula simplification that was a NOOP. DAG size: 658 [2020-10-27 05:51:48,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:51:48,886 INFO L93 Difference]: Finished difference Result 6849 states and 10186 transitions. [2020-10-27 05:51:48,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 05:51:48,887 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 81 [2020-10-27 05:51:48,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:51:48,918 INFO L225 Difference]: With dead ends: 6849 [2020-10-27 05:51:48,918 INFO L226 Difference]: Without dead ends: 6059 [2020-10-27 05:51:48,923 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-10-27 05:51:48,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6059 states. [2020-10-27 05:51:49,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6059 to 3107. [2020-10-27 05:51:49,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3107 states. [2020-10-27 05:51:49,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3107 states to 3107 states and 4384 transitions. [2020-10-27 05:51:49,212 INFO L78 Accepts]: Start accepts. Automaton has 3107 states and 4384 transitions. Word has length 81 [2020-10-27 05:51:49,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:51:49,213 INFO L481 AbstractCegarLoop]: Abstraction has 3107 states and 4384 transitions. [2020-10-27 05:51:49,213 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 05:51:49,213 INFO L276 IsEmpty]: Start isEmpty. Operand 3107 states and 4384 transitions. [2020-10-27 05:51:49,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-27 05:51:49,219 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:51:49,220 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:51:49,220 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 05:51:49,220 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:51:49,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:51:49,221 INFO L82 PathProgramCache]: Analyzing trace with hash -1450432593, now seen corresponding path program 1 times [2020-10-27 05:51:49,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:51:49,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [316096678] [2020-10-27 05:51:49,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:51:49,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:51:49,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:51:49,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:51:49,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:51:50,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:51:51,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:51:54,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:51:54,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 05:51:54,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 05:51:54,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4728 [2020-10-27 05:51:54,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:51:54,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 05:51:54,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:51:54,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-27 05:51:54,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:51:56,980 WARN L193 SmtUtils]: Spent 2.70 s on a formula simplification that was a NOOP. DAG size: 649 [2020-10-27 05:51:56,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:51:57,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:51:57,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:51:57,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:51:57,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:51:57,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:51:57,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-27 05:51:57,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:51:57,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:51:57,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:51:57,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:51:57,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:51:57,138 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 05:51:57,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [316096678] [2020-10-27 05:51:57,139 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:51:57,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 05:51:57,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332225595] [2020-10-27 05:51:57,140 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 05:51:57,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:51:57,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 05:51:57,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-27 05:51:57,141 INFO L87 Difference]: Start difference. First operand 3107 states and 4384 transitions. Second operand 8 states. [2020-10-27 05:52:00,065 WARN L193 SmtUtils]: Spent 2.81 s on a formula simplification that was a NOOP. DAG size: 656 [2020-10-27 05:52:13,446 WARN L193 SmtUtils]: Spent 2.86 s on a formula simplification that was a NOOP. DAG size: 660 [2020-10-27 05:52:18,340 WARN L193 SmtUtils]: Spent 2.82 s on a formula simplification that was a NOOP. DAG size: 658 [2020-10-27 05:52:18,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:52:18,748 INFO L93 Difference]: Finished difference Result 9062 states and 13432 transitions. [2020-10-27 05:52:18,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 05:52:18,749 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 81 [2020-10-27 05:52:18,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:52:18,786 INFO L225 Difference]: With dead ends: 9062 [2020-10-27 05:52:18,787 INFO L226 Difference]: Without dead ends: 7717 [2020-10-27 05:52:18,792 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-10-27 05:52:18,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7717 states. [2020-10-27 05:52:19,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7717 to 3195. [2020-10-27 05:52:19,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3195 states. [2020-10-27 05:52:19,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3195 states to 3195 states and 4496 transitions. [2020-10-27 05:52:19,125 INFO L78 Accepts]: Start accepts. Automaton has 3195 states and 4496 transitions. Word has length 81 [2020-10-27 05:52:19,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:52:19,126 INFO L481 AbstractCegarLoop]: Abstraction has 3195 states and 4496 transitions. [2020-10-27 05:52:19,126 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 05:52:19,126 INFO L276 IsEmpty]: Start isEmpty. Operand 3195 states and 4496 transitions. [2020-10-27 05:52:19,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-27 05:52:19,132 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:52:19,132 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:52:19,132 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 05:52:19,132 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:52:19,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:52:19,133 INFO L82 PathProgramCache]: Analyzing trace with hash 1042905222, now seen corresponding path program 1 times [2020-10-27 05:52:19,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:52:19,133 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1220159643] [2020-10-27 05:52:19,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:52:19,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:52:19,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:52:19,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:52:19,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:52:19,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:52:20,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:52:24,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:52:24,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:52:24,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 05:52:24,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 05:52:24,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-27 05:52:24,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:52:24,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:52:24,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:52:24,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-27 05:52:24,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:52:27,074 WARN L193 SmtUtils]: Spent 2.74 s on a formula simplification that was a NOOP. DAG size: 649 [2020-10-27 05:52:27,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:52:27,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:52:27,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:52:27,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:52:27,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:52:27,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:52:27,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-27 05:52:27,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:52:27,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:52:27,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:52:27,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:52:27,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:52:27,241 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 05:52:27,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1220159643] [2020-10-27 05:52:27,242 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:52:27,242 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:52:27,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601899364] [2020-10-27 05:52:27,242 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:52:27,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:52:27,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:52:27,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:52:27,244 INFO L87 Difference]: Start difference. First operand 3195 states and 4496 transitions. Second operand 6 states. [2020-10-27 05:52:30,177 WARN L193 SmtUtils]: Spent 2.82 s on a formula simplification that was a NOOP. DAG size: 655 [2020-10-27 05:52:40,516 WARN L193 SmtUtils]: Spent 2.79 s on a formula simplification that was a NOOP. DAG size: 654 [2020-10-27 05:52:41,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:52:41,745 INFO L93 Difference]: Finished difference Result 4347 states and 6251 transitions. [2020-10-27 05:52:41,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 05:52:41,746 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 81 [2020-10-27 05:52:41,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:52:41,753 INFO L225 Difference]: With dead ends: 4347 [2020-10-27 05:52:41,753 INFO L226 Difference]: Without dead ends: 2546 [2020-10-27 05:52:41,758 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-27 05:52:41,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2546 states. [2020-10-27 05:52:41,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2546 to 2367. [2020-10-27 05:52:41,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2367 states. [2020-10-27 05:52:41,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2367 states to 2367 states and 3383 transitions. [2020-10-27 05:52:41,987 INFO L78 Accepts]: Start accepts. Automaton has 2367 states and 3383 transitions. Word has length 81 [2020-10-27 05:52:41,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:52:41,987 INFO L481 AbstractCegarLoop]: Abstraction has 2367 states and 3383 transitions. [2020-10-27 05:52:41,987 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:52:41,987 INFO L276 IsEmpty]: Start isEmpty. Operand 2367 states and 3383 transitions. [2020-10-27 05:52:41,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-27 05:52:41,992 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:52:41,992 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:52:41,992 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 05:52:41,992 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:52:41,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:52:41,993 INFO L82 PathProgramCache]: Analyzing trace with hash -603240441, now seen corresponding path program 1 times [2020-10-27 05:52:41,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:52:41,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1052586104] [2020-10-27 05:52:41,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:52:42,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:52:42,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:52:42,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:52:42,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:52:42,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:52:44,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:52:47,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:52:47,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-27 05:52:47,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 05:52:47,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-27 05:52:47,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:52:47,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 05:52:47,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:52:47,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-27 05:52:47,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:52:50,047 WARN L193 SmtUtils]: Spent 2.74 s on a formula simplification that was a NOOP. DAG size: 649 [2020-10-27 05:52:50,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:52:50,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:52:50,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:52:50,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:52:50,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:52:50,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:52:50,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-27 05:52:50,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:52:50,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:52:50,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:52:50,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:52:50,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:52:50,154 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 05:52:50,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1052586104] [2020-10-27 05:52:50,155 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:52:50,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 05:52:50,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525025850] [2020-10-27 05:52:50,155 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 05:52:50,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:52:50,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 05:52:50,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-27 05:52:50,156 INFO L87 Difference]: Start difference. First operand 2367 states and 3383 transitions. Second operand 8 states. [2020-10-27 05:52:53,259 WARN L193 SmtUtils]: Spent 2.98 s on a formula simplification that was a NOOP. DAG size: 656