/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 07:11:18,846 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 07:11:18,848 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 07:11:18,897 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 07:11:18,898 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 07:11:18,912 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 07:11:18,915 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 07:11:18,920 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 07:11:18,921 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 07:11:18,922 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 07:11:18,922 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 07:11:18,923 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 07:11:18,923 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 07:11:18,924 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 07:11:18,925 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 07:11:18,926 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 07:11:18,926 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 07:11:18,927 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 07:11:18,928 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 07:11:18,930 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 07:11:18,931 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 07:11:18,934 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 07:11:18,934 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 07:11:18,935 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 07:11:18,937 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 07:11:18,940 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 07:11:18,941 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 07:11:18,941 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 07:11:18,942 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 07:11:18,943 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 07:11:18,950 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 07:11:18,951 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 07:11:18,951 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 07:11:18,951 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 07:11:18,952 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 07:11:18,953 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 07:11:18,954 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-01-10 07:11:18,988 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 07:11:18,988 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 07:11:18,989 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 07:11:18,989 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 07:11:18,989 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 07:11:18,989 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 07:11:18,990 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 07:11:18,990 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 07:11:18,990 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 07:11:18,990 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 07:11:18,990 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 07:11:18,990 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 07:11:18,991 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 07:11:18,991 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 07:11:18,991 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 07:11:18,991 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 07:11:18,991 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 07:11:18,991 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 07:11:18,991 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 07:11:18,991 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 07:11:18,992 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 07:11:18,992 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 07:11:18,992 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 07:11:18,992 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 07:11:18,992 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 07:11:18,992 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 07:11:18,992 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 07:11:18,992 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 07:11:18,992 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 07:11:18,993 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 07:11:18,993 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 07:11:18,993 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 07:11:18,993 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 07:11:18,993 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 07:11:19,194 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 07:11:19,218 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 07:11:19,220 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 07:11:19,221 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 07:11:19,222 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 07:11:19,223 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-01-10 07:11:19,274 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2aadccf71/9df02db1126e4dc8bf45c15eee9ad9f9/FLAG17cd7a965 [2022-01-10 07:11:19,753 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 07:11:19,754 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-01-10 07:11:19,775 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2aadccf71/9df02db1126e4dc8bf45c15eee9ad9f9/FLAG17cd7a965 [2022-01-10 07:11:20,099 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2aadccf71/9df02db1126e4dc8bf45c15eee9ad9f9 [2022-01-10 07:11:20,101 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 07:11:20,103 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 07:11:20,104 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 07:11:20,105 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 07:11:20,107 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 07:11:20,108 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:11:20" (1/1) ... [2022-01-10 07:11:20,109 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6051773d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:11:20, skipping insertion in model container [2022-01-10 07:11:20,109 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:11:20" (1/1) ... [2022-01-10 07:11:20,115 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 07:11:20,175 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 07:11:20,464 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[8460,8473] [2022-01-10 07:11:20,548 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 07:11:20,563 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 07:11:20,623 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[8460,8473] [2022-01-10 07:11:20,671 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 07:11:20,690 INFO L208 MainTranslator]: Completed translation [2022-01-10 07:11:20,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:11:20 WrapperNode [2022-01-10 07:11:20,691 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 07:11:20,692 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 07:11:20,692 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 07:11:20,692 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 07:11:20,700 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:11:20" (1/1) ... [2022-01-10 07:11:20,722 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:11:20" (1/1) ... [2022-01-10 07:11:20,765 INFO L137 Inliner]: procedures = 25, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 751 [2022-01-10 07:11:20,766 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 07:11:20,766 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 07:11:20,767 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 07:11:20,767 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 07:11:20,775 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:11:20" (1/1) ... [2022-01-10 07:11:20,776 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:11:20" (1/1) ... [2022-01-10 07:11:20,786 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:11:20" (1/1) ... [2022-01-10 07:11:20,786 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:11:20" (1/1) ... [2022-01-10 07:11:20,817 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:11:20" (1/1) ... [2022-01-10 07:11:20,822 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:11:20" (1/1) ... [2022-01-10 07:11:20,824 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:11:20" (1/1) ... [2022-01-10 07:11:20,845 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 07:11:20,846 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 07:11:20,846 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 07:11:20,846 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 07:11:20,847 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:11:20" (1/1) ... [2022-01-10 07:11:20,853 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 07:11:20,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 07:11:20,881 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 07:11:20,889 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 07:11:20,927 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 07:11:20,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 07:11:20,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 07:11:20,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 07:11:21,104 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 07:11:21,105 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 07:11:21,778 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 07:11:21,787 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 07:11:21,787 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 07:11:21,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:11:21 BoogieIcfgContainer [2022-01-10 07:11:21,790 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 07:11:21,792 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 07:11:21,792 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 07:11:21,795 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 07:11:21,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 07:11:20" (1/3) ... [2022-01-10 07:11:21,796 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@245b86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:11:21, skipping insertion in model container [2022-01-10 07:11:21,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:11:20" (2/3) ... [2022-01-10 07:11:21,797 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@245b86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:11:21, skipping insertion in model container [2022-01-10 07:11:21,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:11:21" (3/3) ... [2022-01-10 07:11:21,800 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-01-10 07:11:21,804 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 07:11:21,805 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 07:11:21,862 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 07:11:21,870 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 07:11:21,870 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 07:11:21,900 INFO L276 IsEmpty]: Start isEmpty. Operand has 206 states, 204 states have (on average 1.7205882352941178) internal successors, (351), 205 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:11:21,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 07:11:21,914 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:11:21,915 INFO L514 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] [2022-01-10 07:11:21,916 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:11:21,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:11:21,920 INFO L85 PathProgramCache]: Analyzing trace with hash -465870500, now seen corresponding path program 1 times [2022-01-10 07:11:21,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:11:21,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1374350404] [2022-01-10 07:11:21,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:11:21,934 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:11:21,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:11:21,939 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:11:21,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-01-10 07:11:22,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:11:22,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 07:11:22,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:11:23,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:11:23,785 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:11:23,785 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:11:23,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1374350404] [2022-01-10 07:11:23,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1374350404] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:11:23,786 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:11:23,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 07:11:23,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194191272] [2022-01-10 07:11:23,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:11:23,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 07:11:23,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:11:23,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 07:11:23,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-01-10 07:11:23,826 INFO L87 Difference]: Start difference. First operand has 206 states, 204 states have (on average 1.7205882352941178) internal successors, (351), 205 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:11:24,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:11:24,036 INFO L93 Difference]: Finished difference Result 452 states and 738 transitions. [2022-01-10 07:11:24,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 07:11:24,039 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-10 07:11:24,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:11:24,048 INFO L225 Difference]: With dead ends: 452 [2022-01-10 07:11:24,048 INFO L226 Difference]: Without dead ends: 304 [2022-01-10 07:11:24,051 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-01-10 07:11:24,054 INFO L933 BasicCegarLoop]: 447 mSDtfsCounter, 277 mSDsluCounter, 1030 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 1477 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 124 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:11:24,055 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [277 Valid, 1477 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 46 Invalid, 0 Unknown, 124 Unchecked, 0.1s Time] [2022-01-10 07:11:24,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2022-01-10 07:11:24,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 227. [2022-01-10 07:11:24,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 226 states have (on average 1.4424778761061947) internal successors, (326), 226 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:11:24,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 326 transitions. [2022-01-10 07:11:24,113 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 326 transitions. Word has length 79 [2022-01-10 07:11:24,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:11:24,113 INFO L470 AbstractCegarLoop]: Abstraction has 227 states and 326 transitions. [2022-01-10 07:11:24,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:11:24,114 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 326 transitions. [2022-01-10 07:11:24,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-10 07:11:24,116 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:11:24,116 INFO L514 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] [2022-01-10 07:11:24,128 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-01-10 07:11:24,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:11:24,328 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:11:24,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:11:24,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1751160502, now seen corresponding path program 1 times [2022-01-10 07:11:24,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:11:24,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [413589140] [2022-01-10 07:11:24,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:11:24,329 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:11:24,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:11:24,331 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:11:24,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-01-10 07:11:24,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:11:24,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:11:24,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:11:24,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:11:24,807 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:11:24,807 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:11:24,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [413589140] [2022-01-10 07:11:24,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [413589140] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:11:24,807 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:11:24,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:11:24,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9703686] [2022-01-10 07:11:24,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:11:24,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:11:24,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:11:24,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:11:24,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:11:24,814 INFO L87 Difference]: Start difference. First operand 227 states and 326 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:11:25,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:11:25,005 INFO L93 Difference]: Finished difference Result 377 states and 560 transitions. [2022-01-10 07:11:25,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:11:25,005 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-01-10 07:11:25,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:11:25,007 INFO L225 Difference]: With dead ends: 377 [2022-01-10 07:11:25,007 INFO L226 Difference]: Without dead ends: 233 [2022-01-10 07:11:25,008 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:11:25,009 INFO L933 BasicCegarLoop]: 279 mSDtfsCounter, 32 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 737 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 120 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:11:25,010 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 737 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 204 Invalid, 0 Unknown, 120 Unchecked, 0.2s Time] [2022-01-10 07:11:25,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2022-01-10 07:11:25,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 231. [2022-01-10 07:11:25,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 230 states have (on average 1.4391304347826086) internal successors, (331), 230 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:11:25,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 331 transitions. [2022-01-10 07:11:25,023 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 331 transitions. Word has length 80 [2022-01-10 07:11:25,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:11:25,024 INFO L470 AbstractCegarLoop]: Abstraction has 231 states and 331 transitions. [2022-01-10 07:11:25,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:11:25,024 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 331 transitions. [2022-01-10 07:11:25,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-10 07:11:25,026 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:11:25,027 INFO L514 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] [2022-01-10 07:11:25,040 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-01-10 07:11:25,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:11:25,237 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:11:25,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:11:25,238 INFO L85 PathProgramCache]: Analyzing trace with hash -930287960, now seen corresponding path program 1 times [2022-01-10 07:11:25,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:11:25,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1886489390] [2022-01-10 07:11:25,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:11:25,239 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:11:25,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:11:25,240 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:11:25,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-01-10 07:11:25,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:11:25,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:11:25,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:11:25,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:11:25,736 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:11:25,736 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:11:25,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1886489390] [2022-01-10 07:11:25,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1886489390] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:11:25,737 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:11:25,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:11:25,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021679723] [2022-01-10 07:11:25,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:11:25,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:11:25,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:11:25,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:11:25,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:11:25,738 INFO L87 Difference]: Start difference. First operand 231 states and 331 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:11:25,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:11:25,863 INFO L93 Difference]: Finished difference Result 368 states and 548 transitions. [2022-01-10 07:11:25,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:11:25,864 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-01-10 07:11:25,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:11:25,865 INFO L225 Difference]: With dead ends: 368 [2022-01-10 07:11:25,865 INFO L226 Difference]: Without dead ends: 244 [2022-01-10 07:11:25,866 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:11:25,867 INFO L933 BasicCegarLoop]: 272 mSDtfsCounter, 30 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 746 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 118 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:11:25,867 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 746 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 97 Invalid, 0 Unknown, 118 Unchecked, 0.1s Time] [2022-01-10 07:11:25,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2022-01-10 07:11:25,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 240. [2022-01-10 07:11:25,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 239 states have (on average 1.4351464435146444) internal successors, (343), 239 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:11:25,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 343 transitions. [2022-01-10 07:11:25,877 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 343 transitions. Word has length 80 [2022-01-10 07:11:25,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:11:25,878 INFO L470 AbstractCegarLoop]: Abstraction has 240 states and 343 transitions. [2022-01-10 07:11:25,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:11:25,878 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 343 transitions. [2022-01-10 07:11:25,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-10 07:11:25,888 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:11:25,888 INFO L514 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] [2022-01-10 07:11:25,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-01-10 07:11:26,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:11:26,089 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:11:26,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:11:26,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1639076569, now seen corresponding path program 1 times [2022-01-10 07:11:26,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:11:26,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1195660542] [2022-01-10 07:11:26,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:11:26,091 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:11:26,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:11:26,092 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:11:26,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-01-10 07:11:26,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:11:26,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:11:26,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:11:26,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:11:26,563 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:11:26,563 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:11:26,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1195660542] [2022-01-10 07:11:26,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1195660542] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:11:26,563 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:11:26,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:11:26,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379190340] [2022-01-10 07:11:26,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:11:26,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:11:26,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:11:26,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:11:26,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:11:26,566 INFO L87 Difference]: Start difference. First operand 240 states and 343 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:11:26,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:11:26,749 INFO L93 Difference]: Finished difference Result 377 states and 559 transitions. [2022-01-10 07:11:26,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:11:26,750 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-01-10 07:11:26,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:11:26,751 INFO L225 Difference]: With dead ends: 377 [2022-01-10 07:11:26,751 INFO L226 Difference]: Without dead ends: 243 [2022-01-10 07:11:26,752 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:11:26,752 INFO L933 BasicCegarLoop]: 275 mSDtfsCounter, 30 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 740 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 120 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:11:26,753 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 740 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 196 Invalid, 0 Unknown, 120 Unchecked, 0.2s Time] [2022-01-10 07:11:26,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2022-01-10 07:11:26,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 241. [2022-01-10 07:11:26,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 240 states have (on average 1.4333333333333333) internal successors, (344), 240 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:11:26,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 344 transitions. [2022-01-10 07:11:26,761 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 344 transitions. Word has length 80 [2022-01-10 07:11:26,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:11:26,761 INFO L470 AbstractCegarLoop]: Abstraction has 241 states and 344 transitions. [2022-01-10 07:11:26,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:11:26,762 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 344 transitions. [2022-01-10 07:11:26,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-10 07:11:26,763 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:11:26,763 INFO L514 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] [2022-01-10 07:11:26,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-01-10 07:11:26,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:11:26,973 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:11:26,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:11:26,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1046065659, now seen corresponding path program 1 times [2022-01-10 07:11:26,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:11:26,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1849609216] [2022-01-10 07:11:26,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:11:26,974 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:11:26,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:11:26,975 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:11:26,977 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-01-10 07:11:27,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:11:27,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:11:27,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:11:27,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:11:27,506 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:11:27,506 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:11:27,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1849609216] [2022-01-10 07:11:27,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1849609216] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:11:27,507 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:11:27,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:11:27,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699745409] [2022-01-10 07:11:27,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:11:27,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:11:27,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:11:27,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:11:27,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:11:27,509 INFO L87 Difference]: Start difference. First operand 241 states and 344 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:11:27,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:11:27,625 INFO L93 Difference]: Finished difference Result 396 states and 584 transitions. [2022-01-10 07:11:27,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:11:27,625 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-01-10 07:11:27,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:11:27,626 INFO L225 Difference]: With dead ends: 396 [2022-01-10 07:11:27,627 INFO L226 Difference]: Without dead ends: 242 [2022-01-10 07:11:27,627 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:11:27,628 INFO L933 BasicCegarLoop]: 284 mSDtfsCounter, 45 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 600 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 120 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:11:27,628 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 600 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 103 Invalid, 0 Unknown, 120 Unchecked, 0.1s Time] [2022-01-10 07:11:27,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2022-01-10 07:11:27,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2022-01-10 07:11:27,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 241 states have (on average 1.4315352697095436) internal successors, (345), 241 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:11:27,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 345 transitions. [2022-01-10 07:11:27,636 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 345 transitions. Word has length 80 [2022-01-10 07:11:27,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:11:27,636 INFO L470 AbstractCegarLoop]: Abstraction has 242 states and 345 transitions. [2022-01-10 07:11:27,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:11:27,636 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 345 transitions. [2022-01-10 07:11:27,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-10 07:11:27,637 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:11:27,637 INFO L514 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] [2022-01-10 07:11:27,647 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-01-10 07:11:27,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:11:27,847 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:11:27,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:11:27,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1798717168, now seen corresponding path program 1 times [2022-01-10 07:11:27,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:11:27,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [566963535] [2022-01-10 07:11:27,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:11:27,848 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:11:27,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:11:27,849 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:11:27,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-01-10 07:11:27,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:11:27,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:11:27,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:11:28,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:11:28,846 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:11:28,846 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:11:28,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [566963535] [2022-01-10 07:11:28,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [566963535] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:11:28,847 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:11:28,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 07:11:28,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267396900] [2022-01-10 07:11:28,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:11:28,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 07:11:28,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:11:28,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 07:11:28,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-01-10 07:11:28,849 INFO L87 Difference]: Start difference. First operand 242 states and 345 transitions. Second operand has 9 states, 9 states have (on average 9.0) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:11:29,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:11:29,010 INFO L93 Difference]: Finished difference Result 373 states and 544 transitions. [2022-01-10 07:11:29,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 07:11:29,011 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2022-01-10 07:11:29,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:11:29,012 INFO L225 Difference]: With dead ends: 373 [2022-01-10 07:11:29,012 INFO L226 Difference]: Without dead ends: 278 [2022-01-10 07:11:29,013 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-01-10 07:11:29,014 INFO L933 BasicCegarLoop]: 268 mSDtfsCounter, 57 mSDsluCounter, 1083 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 1351 SdHoareTripleChecker+Invalid, 589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 424 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:11:29,014 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 1351 Invalid, 589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 164 Invalid, 0 Unknown, 424 Unchecked, 0.1s Time] [2022-01-10 07:11:29,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2022-01-10 07:11:29,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 277. [2022-01-10 07:11:29,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 276 states have (on average 1.4130434782608696) internal successors, (390), 276 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:11:29,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 390 transitions. [2022-01-10 07:11:29,023 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 390 transitions. Word has length 81 [2022-01-10 07:11:29,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:11:29,023 INFO L470 AbstractCegarLoop]: Abstraction has 277 states and 390 transitions. [2022-01-10 07:11:29,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:11:29,024 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 390 transitions. [2022-01-10 07:11:29,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-10 07:11:29,024 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:11:29,024 INFO L514 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] [2022-01-10 07:11:29,037 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-01-10 07:11:29,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:11:29,235 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:11:29,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:11:29,236 INFO L85 PathProgramCache]: Analyzing trace with hash 987627184, now seen corresponding path program 1 times [2022-01-10 07:11:29,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:11:29,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1182734652] [2022-01-10 07:11:29,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:11:29,236 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:11:29,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:11:29,237 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:11:29,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-01-10 07:11:29,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:11:29,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:11:29,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:11:29,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:11:29,876 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:11:29,876 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:11:29,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1182734652] [2022-01-10 07:11:29,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1182734652] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:11:29,877 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:11:29,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 07:11:29,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626881980] [2022-01-10 07:11:29,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:11:29,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 07:11:29,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:11:29,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 07:11:29,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-01-10 07:11:29,880 INFO L87 Difference]: Start difference. First operand 277 states and 390 transitions. Second operand has 9 states, 9 states have (on average 9.0) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:11:30,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:11:30,052 INFO L93 Difference]: Finished difference Result 401 states and 585 transitions. [2022-01-10 07:11:30,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 07:11:30,053 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2022-01-10 07:11:30,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:11:30,055 INFO L225 Difference]: With dead ends: 401 [2022-01-10 07:11:30,055 INFO L226 Difference]: Without dead ends: 288 [2022-01-10 07:11:30,055 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-01-10 07:11:30,056 INFO L933 BasicCegarLoop]: 275 mSDtfsCounter, 34 mSDsluCounter, 1211 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 1486 SdHoareTripleChecker+Invalid, 689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 502 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:11:30,056 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 1486 Invalid, 689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 186 Invalid, 0 Unknown, 502 Unchecked, 0.1s Time] [2022-01-10 07:11:30,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2022-01-10 07:11:30,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 286. [2022-01-10 07:11:30,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 285 states have (on average 1.4) internal successors, (399), 285 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:11:30,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 399 transitions. [2022-01-10 07:11:30,065 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 399 transitions. Word has length 81 [2022-01-10 07:11:30,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:11:30,065 INFO L470 AbstractCegarLoop]: Abstraction has 286 states and 399 transitions. [2022-01-10 07:11:30,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:11:30,066 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 399 transitions. [2022-01-10 07:11:30,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-10 07:11:30,066 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:11:30,067 INFO L514 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] [2022-01-10 07:11:30,082 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-01-10 07:11:30,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:11:30,276 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:11:30,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:11:30,277 INFO L85 PathProgramCache]: Analyzing trace with hash 327449296, now seen corresponding path program 1 times [2022-01-10 07:11:30,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:11:30,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1921882546] [2022-01-10 07:11:30,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:11:30,278 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:11:30,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:11:30,279 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:11:30,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-01-10 07:11:30,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:11:30,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:11:30,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:11:31,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:11:31,212 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:11:31,212 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:11:31,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1921882546] [2022-01-10 07:11:31,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1921882546] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:11:31,212 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:11:31,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 07:11:31,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874680885] [2022-01-10 07:11:31,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:11:31,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 07:11:31,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:11:31,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 07:11:31,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-01-10 07:11:31,213 INFO L87 Difference]: Start difference. First operand 286 states and 399 transitions. Second operand has 9 states, 9 states have (on average 9.0) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:11:31,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:11:31,345 INFO L93 Difference]: Finished difference Result 431 states and 627 transitions. [2022-01-10 07:11:31,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 07:11:31,346 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2022-01-10 07:11:31,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:11:31,348 INFO L225 Difference]: With dead ends: 431 [2022-01-10 07:11:31,348 INFO L226 Difference]: Without dead ends: 337 [2022-01-10 07:11:31,348 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-01-10 07:11:31,349 INFO L933 BasicCegarLoop]: 300 mSDtfsCounter, 110 mSDsluCounter, 1086 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 1386 SdHoareTripleChecker+Invalid, 625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 538 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:11:31,349 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 1386 Invalid, 625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 86 Invalid, 0 Unknown, 538 Unchecked, 0.1s Time] [2022-01-10 07:11:31,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2022-01-10 07:11:31,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 330. [2022-01-10 07:11:31,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 329 states have (on average 1.4103343465045592) internal successors, (464), 329 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:11:31,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 464 transitions. [2022-01-10 07:11:31,360 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 464 transitions. Word has length 81 [2022-01-10 07:11:31,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:11:31,360 INFO L470 AbstractCegarLoop]: Abstraction has 330 states and 464 transitions. [2022-01-10 07:11:31,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:11:31,361 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 464 transitions. [2022-01-10 07:11:31,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-10 07:11:31,361 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:11:31,361 INFO L514 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] [2022-01-10 07:11:31,375 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-01-10 07:11:31,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:11:31,572 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:11:31,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:11:31,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1339864304, now seen corresponding path program 1 times [2022-01-10 07:11:31,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:11:31,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1828632198] [2022-01-10 07:11:31,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:11:31,573 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:11:31,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:11:31,575 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:11:31,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-01-10 07:11:31,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:11:31,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:11:31,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:11:32,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:11:32,443 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:11:32,444 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:11:32,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1828632198] [2022-01-10 07:11:32,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1828632198] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:11:32,444 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:11:32,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 07:11:32,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581957992] [2022-01-10 07:11:32,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:11:32,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 07:11:32,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:11:32,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 07:11:32,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-01-10 07:11:32,445 INFO L87 Difference]: Start difference. First operand 330 states and 464 transitions. Second operand has 9 states, 9 states have (on average 9.0) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:11:32,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:11:32,573 INFO L93 Difference]: Finished difference Result 464 states and 673 transitions. [2022-01-10 07:11:32,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 07:11:32,573 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2022-01-10 07:11:32,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:11:32,575 INFO L225 Difference]: With dead ends: 464 [2022-01-10 07:11:32,575 INFO L226 Difference]: Without dead ends: 363 [2022-01-10 07:11:32,575 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-01-10 07:11:32,576 INFO L933 BasicCegarLoop]: 300 mSDtfsCounter, 71 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 708 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 53 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:11:32,576 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 708 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 102 Invalid, 0 Unknown, 53 Unchecked, 0.1s Time] [2022-01-10 07:11:32,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2022-01-10 07:11:32,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 357. [2022-01-10 07:11:32,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 356 states have (on average 1.401685393258427) internal successors, (499), 356 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:11:32,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 499 transitions. [2022-01-10 07:11:32,586 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 499 transitions. Word has length 81 [2022-01-10 07:11:32,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:11:32,586 INFO L470 AbstractCegarLoop]: Abstraction has 357 states and 499 transitions. [2022-01-10 07:11:32,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:11:32,586 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 499 transitions. [2022-01-10 07:11:32,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-10 07:11:32,590 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:11:32,590 INFO L514 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] [2022-01-10 07:11:32,600 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-01-10 07:11:32,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:11:32,800 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:11:32,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:11:32,801 INFO L85 PathProgramCache]: Analyzing trace with hash 133400594, now seen corresponding path program 1 times [2022-01-10 07:11:32,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:11:32,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [908252516] [2022-01-10 07:11:32,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:11:32,801 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:11:32,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:11:32,802 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:11:32,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-01-10 07:11:32,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:11:32,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:11:32,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:11:33,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:11:33,183 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:11:33,183 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:11:33,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [908252516] [2022-01-10 07:11:33,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [908252516] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:11:33,183 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:11:33,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:11:33,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907195466] [2022-01-10 07:11:33,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:11:33,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:11:33,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:11:33,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:11:33,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:11:33,185 INFO L87 Difference]: Start difference. First operand 357 states and 499 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:11:33,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:11:33,314 INFO L93 Difference]: Finished difference Result 521 states and 751 transitions. [2022-01-10 07:11:33,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:11:33,315 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2022-01-10 07:11:33,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:11:33,316 INFO L225 Difference]: With dead ends: 521 [2022-01-10 07:11:33,316 INFO L226 Difference]: Without dead ends: 357 [2022-01-10 07:11:33,317 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:11:33,317 INFO L933 BasicCegarLoop]: 287 mSDtfsCounter, 51 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 9 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:11:33,317 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 452 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 104 Invalid, 0 Unknown, 9 Unchecked, 0.1s Time] [2022-01-10 07:11:33,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2022-01-10 07:11:33,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 357. [2022-01-10 07:11:33,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 356 states have (on average 1.398876404494382) internal successors, (498), 356 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:11:33,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 498 transitions. [2022-01-10 07:11:33,327 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 498 transitions. Word has length 81 [2022-01-10 07:11:33,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:11:33,327 INFO L470 AbstractCegarLoop]: Abstraction has 357 states and 498 transitions. [2022-01-10 07:11:33,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:11:33,328 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 498 transitions. [2022-01-10 07:11:33,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-10 07:11:33,328 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:11:33,329 INFO L514 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] [2022-01-10 07:11:33,337 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2022-01-10 07:11:33,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:11:33,538 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:11:33,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:11:33,538 INFO L85 PathProgramCache]: Analyzing trace with hash 552453012, now seen corresponding path program 1 times [2022-01-10 07:11:33,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:11:33,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [865311432] [2022-01-10 07:11:33,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:11:33,539 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:11:33,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:11:33,540 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:11:33,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-01-10 07:11:33,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:11:33,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:11:33,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:11:33,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:11:33,944 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:11:33,944 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:11:33,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [865311432] [2022-01-10 07:11:33,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [865311432] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:11:33,944 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:11:33,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:11:33,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219177682] [2022-01-10 07:11:33,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:11:33,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:11:33,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:11:33,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:11:33,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:11:33,946 INFO L87 Difference]: Start difference. First operand 357 states and 498 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:11:34,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:11:34,042 INFO L93 Difference]: Finished difference Result 488 states and 706 transitions. [2022-01-10 07:11:34,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:11:34,043 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2022-01-10 07:11:34,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:11:34,044 INFO L225 Difference]: With dead ends: 488 [2022-01-10 07:11:34,044 INFO L226 Difference]: Without dead ends: 364 [2022-01-10 07:11:34,045 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:11:34,045 INFO L933 BasicCegarLoop]: 270 mSDtfsCounter, 40 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 625 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 117 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:11:34,046 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 625 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 89 Invalid, 0 Unknown, 117 Unchecked, 0.1s Time] [2022-01-10 07:11:34,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2022-01-10 07:11:34,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 361. [2022-01-10 07:11:34,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 360 states have (on average 1.3972222222222221) internal successors, (503), 360 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:11:34,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 503 transitions. [2022-01-10 07:11:34,055 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 503 transitions. Word has length 82 [2022-01-10 07:11:34,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:11:34,056 INFO L470 AbstractCegarLoop]: Abstraction has 361 states and 503 transitions. [2022-01-10 07:11:34,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:11:34,056 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 503 transitions. [2022-01-10 07:11:34,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-10 07:11:34,057 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:11:34,057 INFO L514 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] [2022-01-10 07:11:34,067 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-01-10 07:11:34,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:11:34,266 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:11:34,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:11:34,267 INFO L85 PathProgramCache]: Analyzing trace with hash -912599689, now seen corresponding path program 1 times [2022-01-10 07:11:34,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:11:34,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1699775374] [2022-01-10 07:11:34,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:11:34,267 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:11:34,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:11:34,269 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:11:34,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-01-10 07:11:34,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:11:34,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 07:11:34,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:11:34,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:11:34,555 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:11:34,555 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:11:34,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1699775374] [2022-01-10 07:11:34,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1699775374] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:11:34,555 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:11:34,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:11:34,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611448645] [2022-01-10 07:11:34,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:11:34,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 07:11:34,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:11:34,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 07:11:34,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:11:34,556 INFO L87 Difference]: Start difference. First operand 361 states and 503 transitions. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:11:34,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:11:34,880 INFO L93 Difference]: Finished difference Result 844 states and 1261 transitions. [2022-01-10 07:11:34,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 07:11:34,881 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2022-01-10 07:11:34,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:11:34,884 INFO L225 Difference]: With dead ends: 844 [2022-01-10 07:11:34,884 INFO L226 Difference]: Without dead ends: 703 [2022-01-10 07:11:34,884 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-01-10 07:11:34,885 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 1430 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1430 SdHoareTripleChecker+Valid, 516 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:11:34,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1430 Valid, 516 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:11:34,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2022-01-10 07:11:34,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 382. [2022-01-10 07:11:34,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 1.3674540682414698) internal successors, (521), 381 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:11:34,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 521 transitions. [2022-01-10 07:11:34,902 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 521 transitions. Word has length 82 [2022-01-10 07:11:34,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:11:34,902 INFO L470 AbstractCegarLoop]: Abstraction has 382 states and 521 transitions. [2022-01-10 07:11:34,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:11:34,903 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 521 transitions. [2022-01-10 07:11:34,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-10 07:11:34,903 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:11:34,904 INFO L514 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] [2022-01-10 07:11:34,912 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2022-01-10 07:11:35,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:11:35,113 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:11:35,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:11:35,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1178195789, now seen corresponding path program 1 times [2022-01-10 07:11:35,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:11:35,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [14664373] [2022-01-10 07:11:35,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:11:35,114 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:11:35,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:11:35,115 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:11:35,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-01-10 07:11:35,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:11:35,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 07:11:35,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:11:35,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:11:35,432 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:11:35,432 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:11:35,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [14664373] [2022-01-10 07:11:35,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [14664373] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:11:35,432 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:11:35,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:11:35,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495109041] [2022-01-10 07:11:35,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:11:35,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 07:11:35,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:11:35,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 07:11:35,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:11:35,433 INFO L87 Difference]: Start difference. First operand 382 states and 521 transitions. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:11:35,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:11:35,857 INFO L93 Difference]: Finished difference Result 1058 states and 1562 transitions. [2022-01-10 07:11:35,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 07:11:35,858 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2022-01-10 07:11:35,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:11:35,862 INFO L225 Difference]: With dead ends: 1058 [2022-01-10 07:11:35,862 INFO L226 Difference]: Without dead ends: 941 [2022-01-10 07:11:35,863 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-01-10 07:11:35,865 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 2343 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2343 SdHoareTripleChecker+Valid, 601 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:11:35,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2343 Valid, 601 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:11:35,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 941 states. [2022-01-10 07:11:35,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 941 to 448. [2022-01-10 07:11:35,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 447 states have (on average 1.3512304250559284) internal successors, (604), 447 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:11:35,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 604 transitions. [2022-01-10 07:11:35,888 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 604 transitions. Word has length 82 [2022-01-10 07:11:35,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:11:35,888 INFO L470 AbstractCegarLoop]: Abstraction has 448 states and 604 transitions. [2022-01-10 07:11:35,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:11:35,888 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 604 transitions. [2022-01-10 07:11:35,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-10 07:11:35,889 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:11:35,889 INFO L514 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] [2022-01-10 07:11:35,898 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-01-10 07:11:36,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:11:36,098 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:11:36,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:11:36,099 INFO L85 PathProgramCache]: Analyzing trace with hash 771347785, now seen corresponding path program 1 times [2022-01-10 07:11:36,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:11:36,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1675706732] [2022-01-10 07:11:36,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:11:36,099 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:11:36,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:11:36,100 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:11:36,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-01-10 07:11:36,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:11:36,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 07:11:36,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:11:37,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:11:37,017 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:11:37,017 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:11:37,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1675706732] [2022-01-10 07:11:37,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1675706732] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:11:37,017 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:11:37,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 07:11:37,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968959825] [2022-01-10 07:11:37,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:11:37,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 07:11:37,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:11:37,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 07:11:37,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-01-10 07:11:37,018 INFO L87 Difference]: Start difference. First operand 448 states and 604 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:11:37,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:11:37,172 INFO L93 Difference]: Finished difference Result 1100 states and 1611 transitions. [2022-01-10 07:11:37,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 07:11:37,172 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2022-01-10 07:11:37,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:11:37,176 INFO L225 Difference]: With dead ends: 1100 [2022-01-10 07:11:37,176 INFO L226 Difference]: Without dead ends: 1006 [2022-01-10 07:11:37,176 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-01-10 07:11:37,177 INFO L933 BasicCegarLoop]: 283 mSDtfsCounter, 1233 mSDsluCounter, 831 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1233 SdHoareTripleChecker+Valid, 1114 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:11:37,177 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1233 Valid, 1114 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 07:11:37,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1006 states. [2022-01-10 07:11:37,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1006 to 587. [2022-01-10 07:11:37,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 587 states, 586 states have (on average 1.3976109215017065) internal successors, (819), 586 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:11:37,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 819 transitions. [2022-01-10 07:11:37,211 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 819 transitions. Word has length 82 [2022-01-10 07:11:37,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:11:37,212 INFO L470 AbstractCegarLoop]: Abstraction has 587 states and 819 transitions. [2022-01-10 07:11:37,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:11:37,212 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 819 transitions. [2022-01-10 07:11:37,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-10 07:11:37,213 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:11:37,213 INFO L514 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] [2022-01-10 07:11:37,224 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-01-10 07:11:37,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:11:37,425 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:11:37,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:11:37,425 INFO L85 PathProgramCache]: Analyzing trace with hash -2120364608, now seen corresponding path program 1 times [2022-01-10 07:11:37,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:11:37,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1896366631] [2022-01-10 07:11:37,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:11:37,425 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:11:37,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:11:37,427 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:11:37,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-01-10 07:11:37,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:11:37,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 07:11:37,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:11:37,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:11:37,642 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:11:37,642 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:11:37,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1896366631] [2022-01-10 07:11:37,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1896366631] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:11:37,642 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:11:37,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:11:37,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290395174] [2022-01-10 07:11:37,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:11:37,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:11:37,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:11:37,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:11:37,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:11:37,643 INFO L87 Difference]: Start difference. First operand 587 states and 819 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:11:37,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:11:37,730 INFO L93 Difference]: Finished difference Result 777 states and 1112 transitions. [2022-01-10 07:11:37,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:11:37,731 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2022-01-10 07:11:37,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:11:37,734 INFO L225 Difference]: With dead ends: 777 [2022-01-10 07:11:37,734 INFO L226 Difference]: Without dead ends: 775 [2022-01-10 07:11:37,734 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:11:37,735 INFO L933 BasicCegarLoop]: 320 mSDtfsCounter, 280 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 887 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:11:37,735 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [280 Valid, 887 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:11:37,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775 states. [2022-01-10 07:11:37,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775 to 591. [2022-01-10 07:11:37,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 591 states, 590 states have (on average 1.3949152542372882) internal successors, (823), 590 states have internal predecessors, (823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:11:37,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 823 transitions. [2022-01-10 07:11:37,771 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 823 transitions. Word has length 83 [2022-01-10 07:11:37,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:11:37,772 INFO L470 AbstractCegarLoop]: Abstraction has 591 states and 823 transitions. [2022-01-10 07:11:37,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:11:37,772 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 823 transitions. [2022-01-10 07:11:37,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-10 07:11:37,773 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:11:37,773 INFO L514 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] [2022-01-10 07:11:37,783 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-01-10 07:11:37,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:11:37,983 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:11:37,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:11:37,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1469957880, now seen corresponding path program 1 times [2022-01-10 07:11:37,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:11:37,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1628886556] [2022-01-10 07:11:37,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:11:37,984 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:11:37,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:11:37,985 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:11:37,987 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-01-10 07:11:38,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:11:38,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:11:38,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:11:38,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:11:38,181 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:11:38,181 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:11:38,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1628886556] [2022-01-10 07:11:38,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1628886556] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:11:38,182 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:11:38,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:11:38,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424952057] [2022-01-10 07:11:38,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:11:38,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:11:38,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:11:38,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:11:38,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:11:38,183 INFO L87 Difference]: Start difference. First operand 591 states and 823 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:11:38,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:11:38,276 INFO L93 Difference]: Finished difference Result 1099 states and 1578 transitions. [2022-01-10 07:11:38,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:11:38,277 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-01-10 07:11:38,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:11:38,280 INFO L225 Difference]: With dead ends: 1099 [2022-01-10 07:11:38,280 INFO L226 Difference]: Without dead ends: 903 [2022-01-10 07:11:38,281 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:11:38,281 INFO L933 BasicCegarLoop]: 312 mSDtfsCounter, 173 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:11:38,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [173 Valid, 575 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:11:38,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 903 states. [2022-01-10 07:11:38,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 903 to 901. [2022-01-10 07:11:38,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 901 states, 900 states have (on average 1.4088888888888889) internal successors, (1268), 900 states have internal predecessors, (1268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:11:38,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1268 transitions. [2022-01-10 07:11:38,336 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1268 transitions. Word has length 84 [2022-01-10 07:11:38,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:11:38,336 INFO L470 AbstractCegarLoop]: Abstraction has 901 states and 1268 transitions. [2022-01-10 07:11:38,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:11:38,337 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1268 transitions. [2022-01-10 07:11:38,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-10 07:11:38,339 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:11:38,340 INFO L514 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] [2022-01-10 07:11:38,349 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-01-10 07:11:38,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:11:38,549 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:11:38,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:11:38,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1045499168, now seen corresponding path program 1 times [2022-01-10 07:11:38,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:11:38,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [567012773] [2022-01-10 07:11:38,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:11:38,550 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:11:38,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:11:38,551 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:11:38,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-01-10 07:11:38,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:11:38,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 07:11:38,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:11:38,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:11:38,889 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:11:38,889 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:11:38,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [567012773] [2022-01-10 07:11:38,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [567012773] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:11:38,889 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:11:38,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:11:38,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425049553] [2022-01-10 07:11:38,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:11:38,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:11:38,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:11:38,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:11:38,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:11:38,891 INFO L87 Difference]: Start difference. First operand 901 states and 1268 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:11:38,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:11:38,969 INFO L93 Difference]: Finished difference Result 1460 states and 2122 transitions. [2022-01-10 07:11:38,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:11:38,969 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-01-10 07:11:38,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:11:38,973 INFO L225 Difference]: With dead ends: 1460 [2022-01-10 07:11:38,974 INFO L226 Difference]: Without dead ends: 1104 [2022-01-10 07:11:38,974 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:11:38,975 INFO L933 BasicCegarLoop]: 383 mSDtfsCounter, 193 mSDsluCounter, 517 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 900 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 13 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:11:38,975 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [193 Valid, 900 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 13 Unchecked, 0.0s Time] [2022-01-10 07:11:38,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1104 states. [2022-01-10 07:11:39,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1104 to 1100. [2022-01-10 07:11:39,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1100 states, 1099 states have (on average 1.4267515923566878) internal successors, (1568), 1099 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:11:39,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1100 states to 1100 states and 1568 transitions. [2022-01-10 07:11:39,072 INFO L78 Accepts]: Start accepts. Automaton has 1100 states and 1568 transitions. Word has length 84 [2022-01-10 07:11:39,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:11:39,073 INFO L470 AbstractCegarLoop]: Abstraction has 1100 states and 1568 transitions. [2022-01-10 07:11:39,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:11:39,073 INFO L276 IsEmpty]: Start isEmpty. Operand 1100 states and 1568 transitions. [2022-01-10 07:11:39,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-10 07:11:39,074 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:11:39,074 INFO L514 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] [2022-01-10 07:11:39,092 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-01-10 07:11:39,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:11:39,285 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:11:39,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:11:39,285 INFO L85 PathProgramCache]: Analyzing trace with hash -253586984, now seen corresponding path program 1 times [2022-01-10 07:11:39,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:11:39,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2056247284] [2022-01-10 07:11:39,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:11:39,286 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:11:39,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:11:39,287 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:11:39,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-01-10 07:11:39,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:11:39,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 07:11:39,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:11:39,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:11:39,607 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:11:39,607 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:11:39,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2056247284] [2022-01-10 07:11:39,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2056247284] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:11:39,607 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:11:39,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:11:39,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941022101] [2022-01-10 07:11:39,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:11:39,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 07:11:39,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:11:39,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 07:11:39,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:11:39,609 INFO L87 Difference]: Start difference. First operand 1100 states and 1568 transitions. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:11:40,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:11:40,353 INFO L93 Difference]: Finished difference Result 5078 states and 7559 transitions. [2022-01-10 07:11:40,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 07:11:40,353 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-01-10 07:11:40,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:11:40,369 INFO L225 Difference]: With dead ends: 5078 [2022-01-10 07:11:40,369 INFO L226 Difference]: Without dead ends: 4399 [2022-01-10 07:11:40,374 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-01-10 07:11:40,374 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 2540 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2540 SdHoareTripleChecker+Valid, 622 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:11:40,374 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2540 Valid, 622 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:11:40,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4399 states. [2022-01-10 07:11:40,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4399 to 1234. [2022-01-10 07:11:40,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1234 states, 1233 states have (on average 1.3965936739659368) internal successors, (1722), 1233 states have internal predecessors, (1722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:11:40,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1234 states to 1234 states and 1722 transitions. [2022-01-10 07:11:40,486 INFO L78 Accepts]: Start accepts. Automaton has 1234 states and 1722 transitions. Word has length 84 [2022-01-10 07:11:40,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:11:40,486 INFO L470 AbstractCegarLoop]: Abstraction has 1234 states and 1722 transitions. [2022-01-10 07:11:40,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:11:40,487 INFO L276 IsEmpty]: Start isEmpty. Operand 1234 states and 1722 transitions. [2022-01-10 07:11:40,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-10 07:11:40,488 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:11:40,488 INFO L514 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] [2022-01-10 07:11:40,497 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-01-10 07:11:40,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:11:40,698 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:11:40,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:11:40,698 INFO L85 PathProgramCache]: Analyzing trace with hash -720169287, now seen corresponding path program 1 times [2022-01-10 07:11:40,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:11:40,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1187601458] [2022-01-10 07:11:40,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:11:40,699 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:11:40,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:11:40,700 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:11:40,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-01-10 07:11:40,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:11:40,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:11:40,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:11:40,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:11:40,924 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:11:40,924 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:11:40,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1187601458] [2022-01-10 07:11:40,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1187601458] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:11:40,925 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:11:40,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:11:40,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103924603] [2022-01-10 07:11:40,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:11:40,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:11:40,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:11:40,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:11:40,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:11:40,927 INFO L87 Difference]: Start difference. First operand 1234 states and 1722 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:11:41,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:11:41,103 INFO L93 Difference]: Finished difference Result 2492 states and 3609 transitions. [2022-01-10 07:11:41,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:11:41,103 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-01-10 07:11:41,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:11:41,110 INFO L225 Difference]: With dead ends: 2492 [2022-01-10 07:11:41,110 INFO L226 Difference]: Without dead ends: 1803 [2022-01-10 07:11:41,111 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:11:41,112 INFO L933 BasicCegarLoop]: 291 mSDtfsCounter, 204 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:11:41,113 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [204 Valid, 567 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:11:41,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1803 states. [2022-01-10 07:11:41,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1803 to 1801. [2022-01-10 07:11:41,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1801 states, 1800 states have (on average 1.4288888888888889) internal successors, (2572), 1800 states have internal predecessors, (2572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:11:41,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1801 states to 1801 states and 2572 transitions. [2022-01-10 07:11:41,261 INFO L78 Accepts]: Start accepts. Automaton has 1801 states and 2572 transitions. Word has length 84 [2022-01-10 07:11:41,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:11:41,262 INFO L470 AbstractCegarLoop]: Abstraction has 1801 states and 2572 transitions. [2022-01-10 07:11:41,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:11:41,262 INFO L276 IsEmpty]: Start isEmpty. Operand 1801 states and 2572 transitions. [2022-01-10 07:11:41,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-10 07:11:41,264 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:11:41,264 INFO L514 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] [2022-01-10 07:11:41,275 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-01-10 07:11:41,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:11:41,474 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:11:41,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:11:41,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1264170607, now seen corresponding path program 1 times [2022-01-10 07:11:41,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:11:41,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1951233072] [2022-01-10 07:11:41,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:11:41,474 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:11:41,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:11:41,475 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:11:41,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-01-10 07:11:41,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:11:41,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:11:41,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:11:41,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:11:41,688 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:11:41,688 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:11:41,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1951233072] [2022-01-10 07:11:41,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1951233072] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:11:41,688 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:11:41,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:11:41,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850913286] [2022-01-10 07:11:41,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:11:41,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:11:41,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:11:41,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:11:41,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:11:41,689 INFO L87 Difference]: Start difference. First operand 1801 states and 2572 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:11:41,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:11:41,918 INFO L93 Difference]: Finished difference Result 4063 states and 5948 transitions. [2022-01-10 07:11:41,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:11:41,918 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-01-10 07:11:41,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:11:41,928 INFO L225 Difference]: With dead ends: 4063 [2022-01-10 07:11:41,928 INFO L226 Difference]: Without dead ends: 3027 [2022-01-10 07:11:41,932 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:11:41,933 INFO L933 BasicCegarLoop]: 292 mSDtfsCounter, 164 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 557 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:11:41,933 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [164 Valid, 557 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:11:41,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3027 states. [2022-01-10 07:11:42,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3027 to 3025. [2022-01-10 07:11:42,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3025 states, 3024 states have (on average 1.441137566137566) internal successors, (4358), 3024 states have internal predecessors, (4358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:11:42,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3025 states to 3025 states and 4358 transitions. [2022-01-10 07:11:42,219 INFO L78 Accepts]: Start accepts. Automaton has 3025 states and 4358 transitions. Word has length 84 [2022-01-10 07:11:42,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:11:42,220 INFO L470 AbstractCegarLoop]: Abstraction has 3025 states and 4358 transitions. [2022-01-10 07:11:42,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:11:42,220 INFO L276 IsEmpty]: Start isEmpty. Operand 3025 states and 4358 transitions. [2022-01-10 07:11:42,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-10 07:11:42,228 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:11:42,228 INFO L514 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] [2022-01-10 07:11:42,238 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-01-10 07:11:42,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:11:42,438 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:11:42,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:11:42,438 INFO L85 PathProgramCache]: Analyzing trace with hash 725890361, now seen corresponding path program 1 times [2022-01-10 07:11:42,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:11:42,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [542553615] [2022-01-10 07:11:42,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:11:42,439 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:11:42,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:11:42,440 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:11:42,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-01-10 07:11:42,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:11:42,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:11:42,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:11:42,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:11:42,651 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:11:42,651 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:11:42,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [542553615] [2022-01-10 07:11:42,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [542553615] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:11:42,652 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:11:42,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:11:42,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684840795] [2022-01-10 07:11:42,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:11:42,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:11:42,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:11:42,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:11:42,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:11:42,653 INFO L87 Difference]: Start difference. First operand 3025 states and 4358 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:11:43,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:11:43,019 INFO L93 Difference]: Finished difference Result 7497 states and 10939 transitions. [2022-01-10 07:11:43,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:11:43,019 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-01-10 07:11:43,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:11:43,032 INFO L225 Difference]: With dead ends: 7497 [2022-01-10 07:11:43,032 INFO L226 Difference]: Without dead ends: 5395 [2022-01-10 07:11:43,034 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:11:43,034 INFO L933 BasicCegarLoop]: 397 mSDtfsCounter, 183 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 659 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:11:43,035 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [183 Valid, 659 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:11:43,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5395 states. [2022-01-10 07:11:43,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5395 to 5393. [2022-01-10 07:11:43,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5393 states, 5392 states have (on average 1.4319362017804154) internal successors, (7721), 5392 states have internal predecessors, (7721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:11:43,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5393 states to 5393 states and 7721 transitions. [2022-01-10 07:11:43,471 INFO L78 Accepts]: Start accepts. Automaton has 5393 states and 7721 transitions. Word has length 84 [2022-01-10 07:11:43,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:11:43,471 INFO L470 AbstractCegarLoop]: Abstraction has 5393 states and 7721 transitions. [2022-01-10 07:11:43,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:11:43,471 INFO L276 IsEmpty]: Start isEmpty. Operand 5393 states and 7721 transitions. [2022-01-10 07:11:43,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-10 07:11:43,476 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:11:43,476 INFO L514 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] [2022-01-10 07:11:43,484 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-01-10 07:11:43,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:11:43,679 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:11:43,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:11:43,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1256672765, now seen corresponding path program 1 times [2022-01-10 07:11:43,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:11:43,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1511664578] [2022-01-10 07:11:43,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:11:43,680 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:11:43,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:11:43,681 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:11:43,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-01-10 07:11:43,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:11:43,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:11:43,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:11:44,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:11:44,067 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:11:44,067 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:11:44,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1511664578] [2022-01-10 07:11:44,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1511664578] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:11:44,067 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:11:44,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:11:44,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916795122] [2022-01-10 07:11:44,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:11:44,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:11:44,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:11:44,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:11:44,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:11:44,068 INFO L87 Difference]: Start difference. First operand 5393 states and 7721 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:11:44,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:11:44,456 INFO L93 Difference]: Finished difference Result 7159 states and 10299 transitions. [2022-01-10 07:11:44,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:11:44,458 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-01-10 07:11:44,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:11:44,472 INFO L225 Difference]: With dead ends: 7159 [2022-01-10 07:11:44,472 INFO L226 Difference]: Without dead ends: 5379 [2022-01-10 07:11:44,476 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:11:44,476 INFO L933 BasicCegarLoop]: 270 mSDtfsCounter, 42 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 114 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:11:44,476 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 611 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 89 Invalid, 0 Unknown, 114 Unchecked, 0.1s Time] [2022-01-10 07:11:44,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5379 states. [2022-01-10 07:11:44,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5379 to 5379. [2022-01-10 07:11:44,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5379 states, 5378 states have (on average 1.4323168464113054) internal successors, (7703), 5378 states have internal predecessors, (7703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:11:44,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5379 states to 5379 states and 7703 transitions. [2022-01-10 07:11:44,960 INFO L78 Accepts]: Start accepts. Automaton has 5379 states and 7703 transitions. Word has length 85 [2022-01-10 07:11:44,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:11:44,960 INFO L470 AbstractCegarLoop]: Abstraction has 5379 states and 7703 transitions. [2022-01-10 07:11:44,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:11:44,960 INFO L276 IsEmpty]: Start isEmpty. Operand 5379 states and 7703 transitions. [2022-01-10 07:11:44,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-10 07:11:44,965 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:11:44,965 INFO L514 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] [2022-01-10 07:11:44,977 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-01-10 07:11:45,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:11:45,174 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:11:45,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:11:45,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1706591926, now seen corresponding path program 1 times [2022-01-10 07:11:45,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:11:45,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [962436940] [2022-01-10 07:11:45,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:11:45,175 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:11:45,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:11:45,176 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:11:45,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-01-10 07:11:45,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:11:45,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 07:11:45,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:11:45,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:11:45,485 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:11:45,485 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:11:45,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [962436940] [2022-01-10 07:11:45,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [962436940] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:11:45,486 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:11:45,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:11:45,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539080410] [2022-01-10 07:11:45,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:11:45,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 07:11:45,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:11:45,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 07:11:45,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:11:45,487 INFO L87 Difference]: Start difference. First operand 5379 states and 7703 transitions. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:11:47,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:11:47,060 INFO L93 Difference]: Finished difference Result 20162 states and 29224 transitions. [2022-01-10 07:11:47,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 07:11:47,061 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-01-10 07:11:47,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:11:47,104 INFO L225 Difference]: With dead ends: 20162 [2022-01-10 07:11:47,104 INFO L226 Difference]: Without dead ends: 16680 [2022-01-10 07:11:47,114 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-01-10 07:11:47,119 INFO L933 BasicCegarLoop]: 196 mSDtfsCounter, 1278 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1278 SdHoareTripleChecker+Valid, 568 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:11:47,120 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1278 Valid, 568 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:11:47,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16680 states. [2022-01-10 07:11:47,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16680 to 9822. [2022-01-10 07:11:48,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9822 states, 9821 states have (on average 1.428367783321454) internal successors, (14028), 9821 states have internal predecessors, (14028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:11:48,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9822 states to 9822 states and 14028 transitions. [2022-01-10 07:11:48,016 INFO L78 Accepts]: Start accepts. Automaton has 9822 states and 14028 transitions. Word has length 85 [2022-01-10 07:11:48,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:11:48,017 INFO L470 AbstractCegarLoop]: Abstraction has 9822 states and 14028 transitions. [2022-01-10 07:11:48,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:11:48,017 INFO L276 IsEmpty]: Start isEmpty. Operand 9822 states and 14028 transitions. [2022-01-10 07:11:48,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-10 07:11:48,024 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:11:48,024 INFO L514 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] [2022-01-10 07:11:48,037 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-01-10 07:11:48,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:11:48,234 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:11:48,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:11:48,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1567833977, now seen corresponding path program 1 times [2022-01-10 07:11:48,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:11:48,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [50071814] [2022-01-10 07:11:48,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:11:48,235 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:11:48,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:11:48,236 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:11:48,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-01-10 07:11:48,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:11:48,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:11:48,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:11:48,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:11:48,436 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:11:48,436 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:11:48,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [50071814] [2022-01-10 07:11:48,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [50071814] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:11:48,436 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:11:48,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:11:48,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232914599] [2022-01-10 07:11:48,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:11:48,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:11:48,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:11:48,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:11:48,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:11:48,437 INFO L87 Difference]: Start difference. First operand 9822 states and 14028 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:11:49,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:11:49,788 INFO L93 Difference]: Finished difference Result 19118 states and 27540 transitions. [2022-01-10 07:11:49,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:11:49,788 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-01-10 07:11:49,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:11:49,817 INFO L225 Difference]: With dead ends: 19118 [2022-01-10 07:11:49,818 INFO L226 Difference]: Without dead ends: 14702 [2022-01-10 07:11:49,826 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:11:49,827 INFO L933 BasicCegarLoop]: 346 mSDtfsCounter, 221 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:11:49,827 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [221 Valid, 492 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:11:49,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14702 states. [2022-01-10 07:11:51,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14702 to 14676. [2022-01-10 07:11:51,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14676 states, 14675 states have (on average 1.4434752981260648) internal successors, (21183), 14675 states have internal predecessors, (21183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:11:51,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14676 states to 14676 states and 21183 transitions. [2022-01-10 07:11:51,087 INFO L78 Accepts]: Start accepts. Automaton has 14676 states and 21183 transitions. Word has length 85 [2022-01-10 07:11:51,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:11:51,088 INFO L470 AbstractCegarLoop]: Abstraction has 14676 states and 21183 transitions. [2022-01-10 07:11:51,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:11:51,088 INFO L276 IsEmpty]: Start isEmpty. Operand 14676 states and 21183 transitions. [2022-01-10 07:11:51,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-10 07:11:51,094 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:11:51,094 INFO L514 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] [2022-01-10 07:11:51,107 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-01-10 07:11:51,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:11:51,303 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:11:51,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:11:51,304 INFO L85 PathProgramCache]: Analyzing trace with hash -2135005651, now seen corresponding path program 1 times [2022-01-10 07:11:51,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:11:51,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [456628594] [2022-01-10 07:11:51,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:11:51,304 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:11:51,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:11:51,305 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:11:51,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-01-10 07:11:51,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:11:51,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:11:51,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:11:51,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:11:51,735 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:11:51,735 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:11:51,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [456628594] [2022-01-10 07:11:51,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [456628594] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:11:51,735 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:11:51,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:11:51,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807010448] [2022-01-10 07:11:51,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:11:51,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:11:51,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:11:51,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:11:51,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:11:51,736 INFO L87 Difference]: Start difference. First operand 14676 states and 21183 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:11:53,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:11:53,007 INFO L93 Difference]: Finished difference Result 17765 states and 25600 transitions. [2022-01-10 07:11:53,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:11:53,007 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-01-10 07:11:53,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:11:53,032 INFO L225 Difference]: With dead ends: 17765 [2022-01-10 07:11:53,032 INFO L226 Difference]: Without dead ends: 14676 [2022-01-10 07:11:53,041 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:11:53,042 INFO L933 BasicCegarLoop]: 264 mSDtfsCounter, 47 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 23 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:11:53,042 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 474 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 23 Unchecked, 0.1s Time] [2022-01-10 07:11:53,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14676 states. [2022-01-10 07:11:54,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14676 to 14676. [2022-01-10 07:11:54,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14676 states, 14675 states have (on average 1.4434071550255536) internal successors, (21182), 14675 states have internal predecessors, (21182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:11:54,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14676 states to 14676 states and 21182 transitions. [2022-01-10 07:11:54,508 INFO L78 Accepts]: Start accepts. Automaton has 14676 states and 21182 transitions. Word has length 85 [2022-01-10 07:11:54,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:11:54,509 INFO L470 AbstractCegarLoop]: Abstraction has 14676 states and 21182 transitions. [2022-01-10 07:11:54,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:11:54,509 INFO L276 IsEmpty]: Start isEmpty. Operand 14676 states and 21182 transitions. [2022-01-10 07:11:54,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-10 07:11:54,515 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:11:54,515 INFO L514 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] [2022-01-10 07:11:54,524 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-01-10 07:11:54,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:11:54,724 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:11:54,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:11:54,724 INFO L85 PathProgramCache]: Analyzing trace with hash 141661972, now seen corresponding path program 1 times [2022-01-10 07:11:54,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:11:54,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [58801733] [2022-01-10 07:11:54,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:11:54,725 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:11:54,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:11:54,726 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:11:54,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-01-10 07:11:54,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:11:54,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 07:11:54,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:11:55,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:11:55,018 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:11:55,018 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:11:55,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [58801733] [2022-01-10 07:11:55,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [58801733] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:11:55,019 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:11:55,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:11:55,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853410025] [2022-01-10 07:11:55,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:11:55,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 07:11:55,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:11:55,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 07:11:55,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:11:55,020 INFO L87 Difference]: Start difference. First operand 14676 states and 21182 transitions. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:12:00,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:12:00,991 INFO L93 Difference]: Finished difference Result 77609 states and 111899 transitions. [2022-01-10 07:12:00,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 07:12:00,991 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-01-10 07:12:00,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:12:01,114 INFO L225 Difference]: With dead ends: 77609 [2022-01-10 07:12:01,114 INFO L226 Difference]: Without dead ends: 64851 [2022-01-10 07:12:01,149 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-01-10 07:12:01,150 INFO L933 BasicCegarLoop]: 249 mSDtfsCounter, 1380 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1380 SdHoareTripleChecker+Valid, 733 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:12:01,150 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1380 Valid, 733 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:12:01,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64851 states. [2022-01-10 07:12:03,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64851 to 15193. [2022-01-10 07:12:03,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15193 states, 15192 states have (on average 1.4279225908372828) internal successors, (21693), 15192 states have internal predecessors, (21693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:12:03,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15193 states to 15193 states and 21693 transitions. [2022-01-10 07:12:03,297 INFO L78 Accepts]: Start accepts. Automaton has 15193 states and 21693 transitions. Word has length 85 [2022-01-10 07:12:03,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:12:03,297 INFO L470 AbstractCegarLoop]: Abstraction has 15193 states and 21693 transitions. [2022-01-10 07:12:03,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:12:03,297 INFO L276 IsEmpty]: Start isEmpty. Operand 15193 states and 21693 transitions. [2022-01-10 07:12:03,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-10 07:12:03,302 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:12:03,302 INFO L514 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] [2022-01-10 07:12:03,315 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-01-10 07:12:03,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:12:03,512 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:12:03,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:12:03,512 INFO L85 PathProgramCache]: Analyzing trace with hash 317579677, now seen corresponding path program 1 times [2022-01-10 07:12:03,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:12:03,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1504491672] [2022-01-10 07:12:03,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:12:03,513 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:12:03,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:12:03,514 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:12:03,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-01-10 07:12:03,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:12:03,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:12:03,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:12:03,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:12:03,710 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:12:03,710 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:12:03,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1504491672] [2022-01-10 07:12:03,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1504491672] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:12:03,711 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:12:03,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:12:03,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511265552] [2022-01-10 07:12:03,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:12:03,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:12:03,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:12:03,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:12:03,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:12:03,712 INFO L87 Difference]: Start difference. First operand 15193 states and 21693 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:12:06,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:12:06,370 INFO L93 Difference]: Finished difference Result 34427 states and 49417 transitions. [2022-01-10 07:12:06,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:12:06,370 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-01-10 07:12:06,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:12:06,429 INFO L225 Difference]: With dead ends: 34427 [2022-01-10 07:12:06,430 INFO L226 Difference]: Without dead ends: 27279 [2022-01-10 07:12:06,444 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:12:06,444 INFO L933 BasicCegarLoop]: 253 mSDtfsCounter, 219 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:12:06,445 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [219 Valid, 403 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:12:06,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27279 states. [2022-01-10 07:12:09,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27279 to 27193. [2022-01-10 07:12:09,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27193 states, 27192 states have (on average 1.437849367461018) internal successors, (39098), 27192 states have internal predecessors, (39098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:12:09,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27193 states to 27193 states and 39098 transitions. [2022-01-10 07:12:09,245 INFO L78 Accepts]: Start accepts. Automaton has 27193 states and 39098 transitions. Word has length 85 [2022-01-10 07:12:09,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:12:09,245 INFO L470 AbstractCegarLoop]: Abstraction has 27193 states and 39098 transitions. [2022-01-10 07:12:09,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:12:09,245 INFO L276 IsEmpty]: Start isEmpty. Operand 27193 states and 39098 transitions. [2022-01-10 07:12:09,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-10 07:12:09,250 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:12:09,250 INFO L514 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] [2022-01-10 07:12:09,257 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Ended with exit code 0 [2022-01-10 07:12:09,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:12:09,451 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:12:09,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:12:09,451 INFO L85 PathProgramCache]: Analyzing trace with hash 521529677, now seen corresponding path program 1 times [2022-01-10 07:12:09,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:12:09,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1379945315] [2022-01-10 07:12:09,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:12:09,452 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:12:09,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:12:09,453 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:12:09,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-01-10 07:12:09,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:12:09,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:12:09,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:12:09,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:12:09,652 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:12:09,652 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:12:09,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1379945315] [2022-01-10 07:12:09,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1379945315] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:12:09,652 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:12:09,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:12:09,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451084950] [2022-01-10 07:12:09,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:12:09,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:12:09,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:12:09,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:12:09,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:12:09,653 INFO L87 Difference]: Start difference. First operand 27193 states and 39098 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:12:14,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:12:14,996 INFO L93 Difference]: Finished difference Result 78250 states and 113039 transitions. [2022-01-10 07:12:14,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:12:14,996 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-01-10 07:12:14,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:12:15,084 INFO L225 Difference]: With dead ends: 78250 [2022-01-10 07:12:15,084 INFO L226 Difference]: Without dead ends: 51778 [2022-01-10 07:12:15,114 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:12:15,115 INFO L933 BasicCegarLoop]: 248 mSDtfsCounter, 218 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:12:15,115 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [218 Valid, 404 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:12:15,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51778 states. [2022-01-10 07:12:20,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51778 to 51776. [2022-01-10 07:12:20,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51776 states, 51775 states have (on average 1.4390535972959924) internal successors, (74507), 51775 states have internal predecessors, (74507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:12:20,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51776 states to 51776 states and 74507 transitions. [2022-01-10 07:12:20,911 INFO L78 Accepts]: Start accepts. Automaton has 51776 states and 74507 transitions. Word has length 85 [2022-01-10 07:12:20,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:12:20,911 INFO L470 AbstractCegarLoop]: Abstraction has 51776 states and 74507 transitions. [2022-01-10 07:12:20,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:12:20,911 INFO L276 IsEmpty]: Start isEmpty. Operand 51776 states and 74507 transitions. [2022-01-10 07:12:20,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-10 07:12:20,917 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:12:20,918 INFO L514 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] [2022-01-10 07:12:20,926 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Ended with exit code 0 [2022-01-10 07:12:21,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:12:21,123 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:12:21,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:12:21,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1380342669, now seen corresponding path program 1 times [2022-01-10 07:12:21,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:12:21,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2137727520] [2022-01-10 07:12:21,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:12:21,124 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:12:21,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:12:21,125 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:12:21,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-01-10 07:12:21,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:12:21,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:12:21,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:12:21,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:12:21,505 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:12:21,506 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:12:21,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2137727520] [2022-01-10 07:12:21,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2137727520] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:12:21,506 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:12:21,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:12:21,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134825098] [2022-01-10 07:12:21,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:12:21,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:12:21,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:12:21,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:12:21,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:12:21,507 INFO L87 Difference]: Start difference. First operand 51776 states and 74507 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:12:26,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:12:26,749 INFO L93 Difference]: Finished difference Result 75314 states and 108293 transitions. [2022-01-10 07:12:26,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:12:26,750 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-01-10 07:12:26,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted.