/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_floodmax.4.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 07:02:58,232 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 07:02:58,234 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 07:02:58,281 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 07:02:58,281 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 07:02:58,282 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 07:02:58,283 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 07:02:58,284 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 07:02:58,285 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 07:02:58,285 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 07:02:58,286 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 07:02:58,286 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 07:02:58,287 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 07:02:58,287 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 07:02:58,288 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 07:02:58,289 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 07:02:58,289 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 07:02:58,290 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 07:02:58,291 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 07:02:58,292 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 07:02:58,293 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 07:02:58,294 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 07:02:58,295 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 07:02:58,296 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 07:02:58,298 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 07:02:58,306 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 07:02:58,307 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 07:02:58,307 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 07:02:58,308 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 07:02:58,340 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 07:02:58,341 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 07:02:58,341 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 07:02:58,341 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 07:02:58,341 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 07:02:58,342 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 07:02:58,342 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 07:02:58,342 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 07:02:58,342 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 07:02:58,342 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 07:02:58,343 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 07:02:58,343 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 07:02:58,343 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 07:02:58,343 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 07:02:58,343 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 07:02:58,343 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 07:02:58,343 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 07:02:58,343 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 07:02:58,344 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 07:02:58,344 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 07:02:58,344 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 07:02:58,344 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 07:02:58,344 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 07:02:58,344 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 07:02:58,344 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 07:02:58,344 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 07:02:58,345 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 07:02:58,345 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 07:02:58,345 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 07:02:58,345 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 07:02:58,345 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 07:02:58,345 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 07:02:58,345 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 07:02:58,345 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 07:02:58,514 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 07:02:58,530 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 07:02:58,532 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 07:02:58,533 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 07:02:58,541 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 07:02:58,542 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2022-01-10 07:02:58,590 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49aa655fb/18d4311f8ff3443492d65c3c857c8f1e/FLAG20c6daf48 [2022-01-10 07:02:59,040 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 07:02:59,040 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2022-01-10 07:02:59,057 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49aa655fb/18d4311f8ff3443492d65c3c857c8f1e/FLAG20c6daf48 [2022-01-10 07:02:59,563 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49aa655fb/18d4311f8ff3443492d65c3c857c8f1e [2022-01-10 07:02:59,565 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 07:02:59,565 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 07:02:59,579 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 07:02:59,580 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 07:02:59,582 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 07:02:59,583 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:02:59" (1/1) ... [2022-01-10 07:02:59,583 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2787a44b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:02:59, skipping insertion in model container [2022-01-10 07:02:59,583 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:02:59" (1/1) ... [2022-01-10 07:02:59,588 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 07:02:59,630 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 07:02:59,825 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_floodmax.4.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[12986,12999] [2022-01-10 07:02:59,865 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 07:02:59,875 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 07:02:59,924 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_floodmax.4.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[12986,12999] [2022-01-10 07:02:59,962 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 07:02:59,973 INFO L208 MainTranslator]: Completed translation [2022-01-10 07:02:59,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:02:59 WrapperNode [2022-01-10 07:02:59,974 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 07:02:59,975 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 07:02:59,975 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 07:02:59,975 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 07:02:59,979 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:02:59" (1/1) ... [2022-01-10 07:02:59,995 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:02:59" (1/1) ... [2022-01-10 07:03:00,034 INFO L137 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1277 [2022-01-10 07:03:00,034 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 07:03:00,035 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 07:03:00,035 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 07:03:00,035 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 07:03:00,040 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:02:59" (1/1) ... [2022-01-10 07:03:00,040 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:02:59" (1/1) ... [2022-01-10 07:03:00,047 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:02:59" (1/1) ... [2022-01-10 07:03:00,048 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:02:59" (1/1) ... [2022-01-10 07:03:00,068 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:02:59" (1/1) ... [2022-01-10 07:03:00,075 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:02:59" (1/1) ... [2022-01-10 07:03:00,078 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:02:59" (1/1) ... [2022-01-10 07:03:00,098 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 07:03:00,099 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 07:03:00,099 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 07:03:00,099 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 07:03:00,122 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:02:59" (1/1) ... [2022-01-10 07:03:00,128 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 07:03:00,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 07:03:00,151 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 07:03:00,161 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 07:03:00,184 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 07:03:00,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 07:03:00,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 07:03:00,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 07:03:00,344 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 07:03:00,346 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 07:03:01,077 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 07:03:01,090 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 07:03:01,090 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 07:03:01,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:03:01 BoogieIcfgContainer [2022-01-10 07:03:01,095 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 07:03:01,096 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 07:03:01,096 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 07:03:01,099 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 07:03:01,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 07:02:59" (1/3) ... [2022-01-10 07:03:01,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@152c69c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:03:01, skipping insertion in model container [2022-01-10 07:03:01,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:02:59" (2/3) ... [2022-01-10 07:03:01,100 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@152c69c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:03:01, skipping insertion in model container [2022-01-10 07:03:01,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:03:01" (3/3) ... [2022-01-10 07:03:01,101 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2022-01-10 07:03:01,104 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 07:03:01,104 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 07:03:01,143 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 07:03:01,147 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 07:03:01,147 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 07:03:01,165 INFO L276 IsEmpty]: Start isEmpty. Operand has 326 states, 324 states have (on average 1.7962962962962963) internal successors, (582), 325 states have internal predecessors, (582), 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 07:03:01,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-10 07:03:01,174 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:03:01,175 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, 1, 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 07:03:01,175 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:03:01,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:03:01,179 INFO L85 PathProgramCache]: Analyzing trace with hash 430105228, now seen corresponding path program 1 times [2022-01-10 07:03:01,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:03:01,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1699356024] [2022-01-10 07:03:01,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:03:01,188 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:03:01,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:03:01,191 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 07:03:01,194 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 07:03:01,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:03:01,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:03:01,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:03:01,688 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 07:03:01,688 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:03:01,689 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:03:01,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1699356024] [2022-01-10 07:03:01,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1699356024] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:03:01,689 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:03:01,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:03:01,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031302367] [2022-01-10 07:03:01,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:03:01,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:03:01,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:03:01,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:03:01,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:03:01,722 INFO L87 Difference]: Start difference. First operand has 326 states, 324 states have (on average 1.7962962962962963) internal successors, (582), 325 states have internal predecessors, (582), 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 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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 07:03:01,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:03:01,835 INFO L93 Difference]: Finished difference Result 589 states and 1021 transitions. [2022-01-10 07:03:01,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:03:01,837 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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 110 [2022-01-10 07:03:01,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:03:01,854 INFO L225 Difference]: With dead ends: 589 [2022-01-10 07:03:01,855 INFO L226 Difference]: Without dead ends: 446 [2022-01-10 07:03:01,859 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 108 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 07:03:01,862 INFO L933 BasicCegarLoop]: 576 mSDtfsCounter, 232 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 1074 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:03:01,863 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [232 Valid, 1074 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:03:01,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2022-01-10 07:03:01,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 443. [2022-01-10 07:03:01,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 442 states have (on average 1.660633484162896) internal successors, (734), 442 states have internal predecessors, (734), 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 07:03:01,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 734 transitions. [2022-01-10 07:03:01,923 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 734 transitions. Word has length 110 [2022-01-10 07:03:01,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:03:01,923 INFO L470 AbstractCegarLoop]: Abstraction has 443 states and 734 transitions. [2022-01-10 07:03:01,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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 07:03:01,924 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 734 transitions. [2022-01-10 07:03:01,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-01-10 07:03:01,931 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:03:01,931 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, 1, 1, 1, 1, 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 07:03:01,948 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-01-10 07:03:02,149 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 07:03:02,150 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:03:02,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:03:02,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1228540371, now seen corresponding path program 1 times [2022-01-10 07:03:02,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:03:02,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [961029410] [2022-01-10 07:03:02,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:03:02,152 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:03:02,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:03:02,153 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 07:03:02,154 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 07:03:02,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:03:02,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 07:03:02,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:03:02,478 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 07:03:02,479 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:03:02,479 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:03:02,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [961029410] [2022-01-10 07:03:02,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [961029410] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:03:02,480 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:03:02,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:03:02,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003499639] [2022-01-10 07:03:02,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:03:02,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:03:02,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:03:02,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:03:02,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:03:02,485 INFO L87 Difference]: Start difference. First operand 443 states and 734 transitions. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 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 07:03:02,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:03:02,559 INFO L93 Difference]: Finished difference Result 1299 states and 2151 transitions. [2022-01-10 07:03:02,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:03:02,559 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 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 113 [2022-01-10 07:03:02,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:03:02,564 INFO L225 Difference]: With dead ends: 1299 [2022-01-10 07:03:02,564 INFO L226 Difference]: Without dead ends: 867 [2022-01-10 07:03:02,567 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 110 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 07:03:02,569 INFO L933 BasicCegarLoop]: 548 mSDtfsCounter, 1432 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1432 SdHoareTripleChecker+Valid, 1052 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:03:02,569 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1432 Valid, 1052 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:03:02,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 867 states. [2022-01-10 07:03:02,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 867 to 865. [2022-01-10 07:03:02,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 865 states, 864 states have (on average 1.6493055555555556) internal successors, (1425), 864 states have internal predecessors, (1425), 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 07:03:02,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 865 states to 865 states and 1425 transitions. [2022-01-10 07:03:02,636 INFO L78 Accepts]: Start accepts. Automaton has 865 states and 1425 transitions. Word has length 113 [2022-01-10 07:03:02,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:03:02,636 INFO L470 AbstractCegarLoop]: Abstraction has 865 states and 1425 transitions. [2022-01-10 07:03:02,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 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 07:03:02,637 INFO L276 IsEmpty]: Start isEmpty. Operand 865 states and 1425 transitions. [2022-01-10 07:03:02,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-01-10 07:03:02,641 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:03:02,641 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, 1, 1, 1, 1, 1, 1, 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 07:03:02,654 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 07:03:02,849 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 07:03:02,849 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:03:02,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:03:02,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1079104924, now seen corresponding path program 1 times [2022-01-10 07:03:02,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:03:02,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [544227839] [2022-01-10 07:03:02,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:03:02,851 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:03:02,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:03:02,852 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 07:03:02,853 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 07:03:02,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:03:02,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:03:02,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:03:03,105 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 07:03:03,105 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:03:03,106 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:03:03,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [544227839] [2022-01-10 07:03:03,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [544227839] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:03:03,106 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:03:03,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:03:03,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556374837] [2022-01-10 07:03:03,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:03:03,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:03:03,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:03:03,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:03:03,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:03:03,107 INFO L87 Difference]: Start difference. First operand 865 states and 1425 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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 07:03:03,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:03:03,139 INFO L93 Difference]: Finished difference Result 1339 states and 2230 transitions. [2022-01-10 07:03:03,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:03:03,139 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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 115 [2022-01-10 07:03:03,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:03:03,143 INFO L225 Difference]: With dead ends: 1339 [2022-01-10 07:03:03,143 INFO L226 Difference]: Without dead ends: 1076 [2022-01-10 07:03:03,143 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 113 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 07:03:03,144 INFO L933 BasicCegarLoop]: 705 mSDtfsCounter, 205 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 1204 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:03:03,144 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [205 Valid, 1204 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:03:03,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1076 states. [2022-01-10 07:03:03,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1076 to 1074. [2022-01-10 07:03:03,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1074 states, 1073 states have (on average 1.6589002795899348) internal successors, (1780), 1073 states have internal predecessors, (1780), 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 07:03:03,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1074 states to 1074 states and 1780 transitions. [2022-01-10 07:03:03,171 INFO L78 Accepts]: Start accepts. Automaton has 1074 states and 1780 transitions. Word has length 115 [2022-01-10 07:03:03,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:03:03,172 INFO L470 AbstractCegarLoop]: Abstraction has 1074 states and 1780 transitions. [2022-01-10 07:03:03,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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 07:03:03,172 INFO L276 IsEmpty]: Start isEmpty. Operand 1074 states and 1780 transitions. [2022-01-10 07:03:03,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-01-10 07:03:03,173 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:03:03,173 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, 1, 1, 1, 1, 1, 1, 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 07:03:03,180 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 07:03:03,380 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 07:03:03,381 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:03:03,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:03:03,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1026029946, now seen corresponding path program 1 times [2022-01-10 07:03:03,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:03:03,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1180448273] [2022-01-10 07:03:03,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:03:03,382 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:03:03,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:03:03,383 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 07:03:03,384 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 07:03:03,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:03:03,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:03:03,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:03:03,609 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 07:03:03,610 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:03:03,610 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:03:03,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1180448273] [2022-01-10 07:03:03,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1180448273] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:03:03,610 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:03:03,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:03:03,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806926744] [2022-01-10 07:03:03,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:03:03,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:03:03,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:03:03,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:03:03,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:03:03,613 INFO L87 Difference]: Start difference. First operand 1074 states and 1780 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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 07:03:03,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:03:03,674 INFO L93 Difference]: Finished difference Result 3185 states and 5277 transitions. [2022-01-10 07:03:03,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:03:03,675 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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 115 [2022-01-10 07:03:03,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:03:03,681 INFO L225 Difference]: With dead ends: 3185 [2022-01-10 07:03:03,681 INFO L226 Difference]: Without dead ends: 2132 [2022-01-10 07:03:03,684 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 113 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 07:03:03,688 INFO L933 BasicCegarLoop]: 1046 mSDtfsCounter, 520 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 520 SdHoareTripleChecker+Valid, 1567 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:03:03,689 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [520 Valid, 1567 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:03:03,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2132 states. [2022-01-10 07:03:03,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2132 to 1087. [2022-01-10 07:03:03,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1087 states, 1086 states have (on average 1.656537753222836) internal successors, (1799), 1086 states have internal predecessors, (1799), 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 07:03:03,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 1799 transitions. [2022-01-10 07:03:03,758 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 1799 transitions. Word has length 115 [2022-01-10 07:03:03,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:03:03,758 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 1799 transitions. [2022-01-10 07:03:03,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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 07:03:03,758 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 1799 transitions. [2022-01-10 07:03:03,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-01-10 07:03:03,759 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:03:03,759 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, 1, 1, 1, 1, 1, 1, 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 07:03:03,769 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 07:03:03,970 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 07:03:03,970 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:03:03,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:03:03,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1732658027, now seen corresponding path program 1 times [2022-01-10 07:03:03,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:03:03,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [190418742] [2022-01-10 07:03:03,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:03:03,971 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:03:03,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:03:03,972 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 07:03:03,974 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 07:03:04,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:03:04,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 07:03:04,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:03:04,279 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 07:03:04,279 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:03:04,280 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:03:04,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [190418742] [2022-01-10 07:03:04,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [190418742] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:03:04,280 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:03:04,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:03:04,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157479815] [2022-01-10 07:03:04,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:03:04,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:03:04,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:03:04,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:03:04,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:03:04,286 INFO L87 Difference]: Start difference. First operand 1087 states and 1799 transitions. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 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 07:03:04,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:03:04,406 INFO L93 Difference]: Finished difference Result 3170 states and 5248 transitions. [2022-01-10 07:03:04,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:03:04,406 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 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 115 [2022-01-10 07:03:04,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:03:04,413 INFO L225 Difference]: With dead ends: 3170 [2022-01-10 07:03:04,413 INFO L226 Difference]: Without dead ends: 2110 [2022-01-10 07:03:04,414 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 112 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 07:03:04,414 INFO L933 BasicCegarLoop]: 728 mSDtfsCounter, 1240 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1240 SdHoareTripleChecker+Valid, 1232 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:03:04,415 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1240 Valid, 1232 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:03:04,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2110 states. [2022-01-10 07:03:04,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2110 to 2108. [2022-01-10 07:03:04,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2108 states, 2107 states have (on average 1.6473659231134314) internal successors, (3471), 2107 states have internal predecessors, (3471), 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 07:03:04,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2108 states to 2108 states and 3471 transitions. [2022-01-10 07:03:04,554 INFO L78 Accepts]: Start accepts. Automaton has 2108 states and 3471 transitions. Word has length 115 [2022-01-10 07:03:04,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:03:04,554 INFO L470 AbstractCegarLoop]: Abstraction has 2108 states and 3471 transitions. [2022-01-10 07:03:04,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 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 07:03:04,554 INFO L276 IsEmpty]: Start isEmpty. Operand 2108 states and 3471 transitions. [2022-01-10 07:03:04,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-01-10 07:03:04,557 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:03:04,557 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:03:04,566 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 07:03:04,764 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 07:03:04,764 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:03:04,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:03:04,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1532340708, now seen corresponding path program 1 times [2022-01-10 07:03:04,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:03:04,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1561028822] [2022-01-10 07:03:04,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:03:04,766 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:03:04,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:03:04,767 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 07:03:04,769 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 07:03:04,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:03:04,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:03:04,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:03:05,001 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 07:03:05,002 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:03:05,002 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:03:05,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1561028822] [2022-01-10 07:03:05,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1561028822] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:03:05,002 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:03:05,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:03:05,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886282155] [2022-01-10 07:03:05,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:03:05,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:03:05,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:03:05,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:03:05,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:03:05,004 INFO L87 Difference]: Start difference. First operand 2108 states and 3471 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 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 07:03:05,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:03:05,115 INFO L93 Difference]: Finished difference Result 6253 states and 10298 transitions. [2022-01-10 07:03:05,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:03:05,116 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 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 117 [2022-01-10 07:03:05,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:03:05,127 INFO L225 Difference]: With dead ends: 6253 [2022-01-10 07:03:05,127 INFO L226 Difference]: Without dead ends: 4188 [2022-01-10 07:03:05,132 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 115 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 07:03:05,133 INFO L933 BasicCegarLoop]: 1045 mSDtfsCounter, 514 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 514 SdHoareTripleChecker+Valid, 1566 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:03:05,133 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [514 Valid, 1566 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:03:05,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4188 states. [2022-01-10 07:03:05,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4188 to 2122. [2022-01-10 07:03:05,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2122 states, 2121 states have (on average 1.644035832154644) internal successors, (3487), 2121 states have internal predecessors, (3487), 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 07:03:05,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2122 states to 2122 states and 3487 transitions. [2022-01-10 07:03:05,254 INFO L78 Accepts]: Start accepts. Automaton has 2122 states and 3487 transitions. Word has length 117 [2022-01-10 07:03:05,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:03:05,254 INFO L470 AbstractCegarLoop]: Abstraction has 2122 states and 3487 transitions. [2022-01-10 07:03:05,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 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 07:03:05,255 INFO L276 IsEmpty]: Start isEmpty. Operand 2122 states and 3487 transitions. [2022-01-10 07:03:05,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-01-10 07:03:05,257 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:03:05,257 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:03:05,264 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 07:03:05,465 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 07:03:05,466 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:03:05,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:03:05,466 INFO L85 PathProgramCache]: Analyzing trace with hash -560088205, now seen corresponding path program 1 times [2022-01-10 07:03:05,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:03:05,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [469139729] [2022-01-10 07:03:05,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:03:05,467 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:03:05,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:03:05,468 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 07:03:05,471 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 07:03:05,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:03:05,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 07:03:05,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:03:05,795 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 07:03:05,795 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:03:05,795 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:03:05,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [469139729] [2022-01-10 07:03:05,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [469139729] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:03:05,795 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:03:05,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:03:05,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758469408] [2022-01-10 07:03:05,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:03:05,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:03:05,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:03:05,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:03:05,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:03:05,797 INFO L87 Difference]: Start difference. First operand 2122 states and 3487 transitions. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 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 07:03:05,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:03:05,976 INFO L93 Difference]: Finished difference Result 6233 states and 10258 transitions. [2022-01-10 07:03:05,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:03:05,976 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 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 118 [2022-01-10 07:03:05,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:03:05,987 INFO L225 Difference]: With dead ends: 6233 [2022-01-10 07:03:05,987 INFO L226 Difference]: Without dead ends: 4152 [2022-01-10 07:03:05,989 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 115 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 07:03:05,990 INFO L933 BasicCegarLoop]: 723 mSDtfsCounter, 1232 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1232 SdHoareTripleChecker+Valid, 1227 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:03:05,990 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1232 Valid, 1227 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:03:05,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4152 states. [2022-01-10 07:03:06,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4152 to 4150. [2022-01-10 07:03:06,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4150 states, 4149 states have (on average 1.636538925042179) internal successors, (6790), 4149 states have internal predecessors, (6790), 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 07:03:06,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4150 states to 4150 states and 6790 transitions. [2022-01-10 07:03:06,142 INFO L78 Accepts]: Start accepts. Automaton has 4150 states and 6790 transitions. Word has length 118 [2022-01-10 07:03:06,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:03:06,142 INFO L470 AbstractCegarLoop]: Abstraction has 4150 states and 6790 transitions. [2022-01-10 07:03:06,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 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 07:03:06,144 INFO L276 IsEmpty]: Start isEmpty. Operand 4150 states and 6790 transitions. [2022-01-10 07:03:06,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-01-10 07:03:06,149 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:03:06,150 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:03:06,161 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 07:03:06,361 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 07:03:06,361 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:03:06,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:03:06,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1012940117, now seen corresponding path program 1 times [2022-01-10 07:03:06,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:03:06,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1455238038] [2022-01-10 07:03:06,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:03:06,363 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:03:06,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:03:06,367 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 07:03:06,395 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 07:03:06,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:03:06,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 07:03:06,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:03:06,675 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 07:03:06,676 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:03:06,676 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:03:06,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1455238038] [2022-01-10 07:03:06,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1455238038] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:03:06,676 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:03:06,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:03:06,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934956605] [2022-01-10 07:03:06,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:03:06,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:03:06,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:03:06,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:03:06,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:03:06,677 INFO L87 Difference]: Start difference. First operand 4150 states and 6790 transitions. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 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 07:03:07,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:03:07,029 INFO L93 Difference]: Finished difference Result 14505 states and 23598 transitions. [2022-01-10 07:03:07,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:03:07,030 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 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 119 [2022-01-10 07:03:07,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:03:07,066 INFO L225 Difference]: With dead ends: 14505 [2022-01-10 07:03:07,067 INFO L226 Difference]: Without dead ends: 10899 [2022-01-10 07:03:07,074 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 116 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 07:03:07,074 INFO L933 BasicCegarLoop]: 1221 mSDtfsCounter, 1206 mSDsluCounter, 1425 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1206 SdHoareTripleChecker+Valid, 2646 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:03:07,075 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1206 Valid, 2646 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:03:07,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10899 states. [2022-01-10 07:03:07,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10899 to 4611. [2022-01-10 07:03:07,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4611 states, 4610 states have (on average 1.640997830802603) internal successors, (7565), 4610 states have internal predecessors, (7565), 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 07:03:07,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4611 states to 4611 states and 7565 transitions. [2022-01-10 07:03:07,342 INFO L78 Accepts]: Start accepts. Automaton has 4611 states and 7565 transitions. Word has length 119 [2022-01-10 07:03:07,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:03:07,342 INFO L470 AbstractCegarLoop]: Abstraction has 4611 states and 7565 transitions. [2022-01-10 07:03:07,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 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 07:03:07,342 INFO L276 IsEmpty]: Start isEmpty. Operand 4611 states and 7565 transitions. [2022-01-10 07:03:07,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-01-10 07:03:07,346 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:03:07,346 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:03:07,353 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 07:03:07,555 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 07:03:07,555 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:03:07,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:03:07,556 INFO L85 PathProgramCache]: Analyzing trace with hash -974027627, now seen corresponding path program 1 times [2022-01-10 07:03:07,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:03:07,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1231675764] [2022-01-10 07:03:07,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:03:07,557 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:03:07,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:03:07,558 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 07:03:07,559 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 07:03:07,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:03:07,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:03:07,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:03:07,810 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 07:03:07,810 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:03:07,810 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:03:07,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1231675764] [2022-01-10 07:03:07,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1231675764] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:03:07,810 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:03:07,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:03:07,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216220436] [2022-01-10 07:03:07,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:03:07,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:03:07,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:03:07,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:03:07,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:03:07,812 INFO L87 Difference]: Start difference. First operand 4611 states and 7565 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 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 07:03:08,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:03:08,116 INFO L93 Difference]: Finished difference Result 9843 states and 16275 transitions. [2022-01-10 07:03:08,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:03:08,117 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 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 120 [2022-01-10 07:03:08,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:03:08,133 INFO L225 Difference]: With dead ends: 9843 [2022-01-10 07:03:08,133 INFO L226 Difference]: Without dead ends: 7125 [2022-01-10 07:03:08,136 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 118 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 07:03:08,137 INFO L933 BasicCegarLoop]: 534 mSDtfsCounter, 197 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 1029 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:03:08,137 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [197 Valid, 1029 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:03:08,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7125 states. [2022-01-10 07:03:08,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7125 to 7099. [2022-01-10 07:03:08,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7099 states, 7098 states have (on average 1.6428571428571428) internal successors, (11661), 7098 states have internal predecessors, (11661), 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 07:03:08,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7099 states to 7099 states and 11661 transitions. [2022-01-10 07:03:08,446 INFO L78 Accepts]: Start accepts. Automaton has 7099 states and 11661 transitions. Word has length 120 [2022-01-10 07:03:08,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:03:08,447 INFO L470 AbstractCegarLoop]: Abstraction has 7099 states and 11661 transitions. [2022-01-10 07:03:08,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 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 07:03:08,447 INFO L276 IsEmpty]: Start isEmpty. Operand 7099 states and 11661 transitions. [2022-01-10 07:03:08,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-10 07:03:08,454 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:03:08,454 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:03:08,461 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 07:03:08,660 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 07:03:08,661 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:03:08,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:03:08,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1084139762, now seen corresponding path program 1 times [2022-01-10 07:03:08,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:03:08,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1265211814] [2022-01-10 07:03:08,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:03:08,662 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:03:08,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:03:08,663 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 07:03:08,663 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 07:03:08,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:03:08,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 07:03:08,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:03:08,964 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 07:03:08,964 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:03:08,965 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:03:08,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1265211814] [2022-01-10 07:03:08,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1265211814] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:03:08,965 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:03:08,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:03:08,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371938562] [2022-01-10 07:03:08,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:03:08,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:03:08,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:03:08,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:03:08,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:03:08,966 INFO L87 Difference]: Start difference. First operand 7099 states and 11661 transitions. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 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 07:03:09,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:03:09,551 INFO L93 Difference]: Finished difference Result 20603 states and 33875 transitions. [2022-01-10 07:03:09,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:03:09,552 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 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 123 [2022-01-10 07:03:09,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:03:09,578 INFO L225 Difference]: With dead ends: 20603 [2022-01-10 07:03:09,578 INFO L226 Difference]: Without dead ends: 13739 [2022-01-10 07:03:09,588 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 120 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 07:03:09,588 INFO L933 BasicCegarLoop]: 680 mSDtfsCounter, 1219 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1219 SdHoareTripleChecker+Valid, 1184 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:03:09,588 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1219 Valid, 1184 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:03:09,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13739 states. [2022-01-10 07:03:10,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13739 to 13737. [2022-01-10 07:03:10,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13737 states, 13736 states have (on average 1.634391380314502) internal successors, (22450), 13736 states have internal predecessors, (22450), 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 07:03:10,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13737 states to 13737 states and 22450 transitions. [2022-01-10 07:03:10,193 INFO L78 Accepts]: Start accepts. Automaton has 13737 states and 22450 transitions. Word has length 123 [2022-01-10 07:03:10,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:03:10,193 INFO L470 AbstractCegarLoop]: Abstraction has 13737 states and 22450 transitions. [2022-01-10 07:03:10,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 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 07:03:10,193 INFO L276 IsEmpty]: Start isEmpty. Operand 13737 states and 22450 transitions. [2022-01-10 07:03:10,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-01-10 07:03:10,206 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:03:10,206 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:03:10,214 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 07:03:10,414 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 07:03:10,414 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:03:10,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:03:10,415 INFO L85 PathProgramCache]: Analyzing trace with hash -195495729, now seen corresponding path program 1 times [2022-01-10 07:03:10,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:03:10,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [832907100] [2022-01-10 07:03:10,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:03:10,415 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:03:10,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:03:10,416 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 07:03:10,418 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 07:03:10,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:03:10,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:03:10,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:03:10,754 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 07:03:10,754 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:03:10,755 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:03:10,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [832907100] [2022-01-10 07:03:10,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [832907100] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:03:10,755 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:03:10,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:03:10,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723101243] [2022-01-10 07:03:10,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:03:10,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:03:10,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:03:10,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:03:10,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:03:10,756 INFO L87 Difference]: Start difference. First operand 13737 states and 22450 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 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 07:03:11,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:03:11,804 INFO L93 Difference]: Finished difference Result 37921 states and 61772 transitions. [2022-01-10 07:03:11,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:03:11,804 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 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 125 [2022-01-10 07:03:11,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:03:11,847 INFO L225 Difference]: With dead ends: 37921 [2022-01-10 07:03:11,847 INFO L226 Difference]: Without dead ends: 26011 [2022-01-10 07:03:11,863 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 123 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 07:03:11,863 INFO L933 BasicCegarLoop]: 855 mSDtfsCounter, 395 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 1369 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:03:11,863 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [395 Valid, 1369 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:03:11,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26011 states. [2022-01-10 07:03:13,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26011 to 26009. [2022-01-10 07:03:13,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26009 states, 26008 states have (on average 1.6226545678252846) internal successors, (42202), 26008 states have internal predecessors, (42202), 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 07:03:13,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26009 states to 26009 states and 42202 transitions. [2022-01-10 07:03:13,192 INFO L78 Accepts]: Start accepts. Automaton has 26009 states and 42202 transitions. Word has length 125 [2022-01-10 07:03:13,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:03:13,193 INFO L470 AbstractCegarLoop]: Abstraction has 26009 states and 42202 transitions. [2022-01-10 07:03:13,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 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 07:03:13,193 INFO L276 IsEmpty]: Start isEmpty. Operand 26009 states and 42202 transitions. [2022-01-10 07:03:13,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-10 07:03:13,210 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:03:13,210 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:03:13,229 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 07:03:13,418 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 07:03:13,418 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:03:13,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:03:13,419 INFO L85 PathProgramCache]: Analyzing trace with hash -545986246, now seen corresponding path program 1 times [2022-01-10 07:03:13,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:03:13,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1155261250] [2022-01-10 07:03:13,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:03:13,419 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:03:13,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:03:13,420 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 07:03:13,421 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 07:03:13,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:03:13,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:03:13,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:03:13,671 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 07:03:13,671 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:03:13,671 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:03:13,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1155261250] [2022-01-10 07:03:13,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1155261250] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:03:13,672 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:03:13,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:03:13,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555867866] [2022-01-10 07:03:13,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:03:13,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:03:13,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:03:13,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:03:13,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:03:13,673 INFO L87 Difference]: Start difference. First operand 26009 states and 42202 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 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 07:03:15,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:03:15,087 INFO L93 Difference]: Finished difference Result 45005 states and 73692 transitions. [2022-01-10 07:03:15,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:03:15,087 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 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 126 [2022-01-10 07:03:15,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:03:15,141 INFO L225 Difference]: With dead ends: 45005 [2022-01-10 07:03:15,142 INFO L226 Difference]: Without dead ends: 34555 [2022-01-10 07:03:15,160 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 124 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 07:03:15,161 INFO L933 BasicCegarLoop]: 686 mSDtfsCounter, 196 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 1186 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:03:15,161 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [196 Valid, 1186 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:03:15,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34555 states. [2022-01-10 07:03:16,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34555 to 34553. [2022-01-10 07:03:16,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34553 states, 34552 states have (on average 1.6275179439685112) internal successors, (56234), 34552 states have internal predecessors, (56234), 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 07:03:16,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34553 states to 34553 states and 56234 transitions. [2022-01-10 07:03:16,797 INFO L78 Accepts]: Start accepts. Automaton has 34553 states and 56234 transitions. Word has length 126 [2022-01-10 07:03:16,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:03:16,798 INFO L470 AbstractCegarLoop]: Abstraction has 34553 states and 56234 transitions. [2022-01-10 07:03:16,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 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 07:03:16,798 INFO L276 IsEmpty]: Start isEmpty. Operand 34553 states and 56234 transitions. [2022-01-10 07:03:16,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-10 07:03:16,811 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:03:16,812 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:03:16,823 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-01-10 07:03:17,019 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 07:03:17,019 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:03:17,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:03:17,020 INFO L85 PathProgramCache]: Analyzing trace with hash 998483907, now seen corresponding path program 1 times [2022-01-10 07:03:17,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:03:17,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1111677903] [2022-01-10 07:03:17,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:03:17,020 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:03:17,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:03:17,021 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 07:03:17,023 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 07:03:17,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:03:17,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 07:03:17,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:03:17,309 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 07:03:17,309 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:03:17,309 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:03:17,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1111677903] [2022-01-10 07:03:17,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1111677903] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:03:17,309 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:03:17,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:03:17,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53429670] [2022-01-10 07:03:17,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:03:17,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:03:17,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:03:17,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:03:17,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:03:17,310 INFO L87 Difference]: Start difference. First operand 34553 states and 56234 transitions. Second operand has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 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 07:03:19,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:03:19,186 INFO L93 Difference]: Finished difference Result 72130 states and 117148 transitions. [2022-01-10 07:03:19,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:03:19,186 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 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 126 [2022-01-10 07:03:19,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:03:19,250 INFO L225 Difference]: With dead ends: 72130 [2022-01-10 07:03:19,250 INFO L226 Difference]: Without dead ends: 37858 [2022-01-10 07:03:19,292 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 123 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 07:03:19,292 INFO L933 BasicCegarLoop]: 573 mSDtfsCounter, 1340 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1340 SdHoareTripleChecker+Valid, 1077 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:03:19,292 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1340 Valid, 1077 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:03:19,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37858 states. [2022-01-10 07:03:20,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37858 to 35256. [2022-01-10 07:03:20,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35256 states, 35255 states have (on average 1.6281094880158842) internal successors, (57399), 35255 states have internal predecessors, (57399), 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 07:03:21,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35256 states to 35256 states and 57399 transitions. [2022-01-10 07:03:21,015 INFO L78 Accepts]: Start accepts. Automaton has 35256 states and 57399 transitions. Word has length 126 [2022-01-10 07:03:21,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:03:21,015 INFO L470 AbstractCegarLoop]: Abstraction has 35256 states and 57399 transitions. [2022-01-10 07:03:21,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 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 07:03:21,015 INFO L276 IsEmpty]: Start isEmpty. Operand 35256 states and 57399 transitions. [2022-01-10 07:03:21,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-01-10 07:03:21,033 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:03:21,033 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:03:21,044 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 07:03:21,247 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 07:03:21,247 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:03:21,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:03:21,248 INFO L85 PathProgramCache]: Analyzing trace with hash 360039680, now seen corresponding path program 1 times [2022-01-10 07:03:21,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:03:21,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [628890705] [2022-01-10 07:03:21,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:03:21,248 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:03:21,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:03:21,268 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 07:03:21,269 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 07:03:21,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:03:21,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:03:21,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:03:21,563 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 07:03:21,564 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:03:21,564 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:03:21,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [628890705] [2022-01-10 07:03:21,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [628890705] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:03:21,564 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:03:21,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:03:21,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110921379] [2022-01-10 07:03:21,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:03:21,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:03:21,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:03:21,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:03:21,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:03:21,565 INFO L87 Difference]: Start difference. First operand 35256 states and 57399 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 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 07:03:24,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:03:24,647 INFO L93 Difference]: Finished difference Result 100614 states and 163585 transitions. [2022-01-10 07:03:24,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:03:24,648 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 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 128 [2022-01-10 07:03:24,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:03:24,761 INFO L225 Difference]: With dead ends: 100614 [2022-01-10 07:03:24,761 INFO L226 Difference]: Without dead ends: 68336 [2022-01-10 07:03:24,805 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 126 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 07:03:24,806 INFO L933 BasicCegarLoop]: 994 mSDtfsCounter, 388 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 1508 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:03:24,806 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [388 Valid, 1508 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:03:24,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68336 states. [2022-01-10 07:03:28,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68336 to 68334. [2022-01-10 07:03:28,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68334 states, 68333 states have (on average 1.6191737520670832) internal successors, (110643), 68333 states have internal predecessors, (110643), 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 07:03:28,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68334 states to 68334 states and 110643 transitions. [2022-01-10 07:03:28,408 INFO L78 Accepts]: Start accepts. Automaton has 68334 states and 110643 transitions. Word has length 128 [2022-01-10 07:03:28,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:03:28,408 INFO L470 AbstractCegarLoop]: Abstraction has 68334 states and 110643 transitions. [2022-01-10 07:03:28,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 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 07:03:28,408 INFO L276 IsEmpty]: Start isEmpty. Operand 68334 states and 110643 transitions. [2022-01-10 07:03:28,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-01-10 07:03:28,433 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:03:28,433 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:03:28,443 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 07:03:28,641 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 07:03:28,642 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:03:28,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:03:28,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1897220252, now seen corresponding path program 1 times [2022-01-10 07:03:28,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:03:28,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [130236092] [2022-01-10 07:03:28,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:03:28,643 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:03:28,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:03:28,644 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 07:03:28,646 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 07:03:28,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:03:28,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:03:28,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:03:28,858 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 07:03:28,859 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:03:28,859 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:03:28,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [130236092] [2022-01-10 07:03:28,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [130236092] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:03:28,859 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:03:28,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:03:28,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621466276] [2022-01-10 07:03:28,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:03:28,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:03:28,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:03:28,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:03:28,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:03:28,860 INFO L87 Difference]: Start difference. First operand 68334 states and 110643 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 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 07:03:34,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:03:34,890 INFO L93 Difference]: Finished difference Result 203477 states and 329548 transitions. [2022-01-10 07:03:34,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:03:34,891 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 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 128 [2022-01-10 07:03:34,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:03:35,168 INFO L225 Difference]: With dead ends: 203477 [2022-01-10 07:03:35,169 INFO L226 Difference]: Without dead ends: 135921 [2022-01-10 07:03:35,236 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 126 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 07:03:35,237 INFO L933 BasicCegarLoop]: 1001 mSDtfsCounter, 484 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 484 SdHoareTripleChecker+Valid, 1522 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:03:35,237 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [484 Valid, 1522 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:03:35,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135921 states. [2022-01-10 07:03:39,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135921 to 68579. [2022-01-10 07:03:39,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68579 states, 68578 states have (on average 1.6176178949517337) internal successors, (110933), 68578 states have internal predecessors, (110933), 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 07:03:39,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68579 states to 68579 states and 110933 transitions. [2022-01-10 07:03:39,607 INFO L78 Accepts]: Start accepts. Automaton has 68579 states and 110933 transitions. Word has length 128 [2022-01-10 07:03:39,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:03:39,607 INFO L470 AbstractCegarLoop]: Abstraction has 68579 states and 110933 transitions. [2022-01-10 07:03:39,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 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 07:03:39,607 INFO L276 IsEmpty]: Start isEmpty. Operand 68579 states and 110933 transitions. [2022-01-10 07:03:39,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-01-10 07:03:39,631 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:03:39,631 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:03:39,640 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 07:03:39,832 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 07:03:39,832 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:03:39,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:03:39,832 INFO L85 PathProgramCache]: Analyzing trace with hash -465530, now seen corresponding path program 1 times [2022-01-10 07:03:39,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:03:39,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [790365406] [2022-01-10 07:03:39,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:03:39,833 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:03:39,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:03:39,834 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 07:03:39,834 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 07:03:39,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:03:39,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 07:03:39,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:03:40,076 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 07:03:40,077 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:03:40,077 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:03:40,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [790365406] [2022-01-10 07:03:40,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [790365406] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:03:40,077 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:03:40,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:03:40,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200522375] [2022-01-10 07:03:40,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:03:40,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:03:40,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:03:40,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:03:40,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:03:40,078 INFO L87 Difference]: Start difference. First operand 68579 states and 110933 transitions. Second operand has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 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 07:03:43,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:03:43,952 INFO L93 Difference]: Finished difference Result 128825 states and 207225 transitions. [2022-01-10 07:03:43,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:03:43,952 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 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 129 [2022-01-10 07:03:43,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:03:44,077 INFO L225 Difference]: With dead ends: 128825 [2022-01-10 07:03:44,077 INFO L226 Difference]: Without dead ends: 74713 [2022-01-10 07:03:44,129 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 126 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 07:03:44,130 INFO L933 BasicCegarLoop]: 813 mSDtfsCounter, 1174 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1174 SdHoareTripleChecker+Valid, 1322 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:03:44,130 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1174 Valid, 1322 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:03:44,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74713 states. [2022-01-10 07:03:48,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74713 to 74685. [2022-01-10 07:03:48,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74685 states, 74684 states have (on average 1.6019629371752986) internal successors, (119641), 74684 states have internal predecessors, (119641), 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 07:03:48,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74685 states to 74685 states and 119641 transitions. [2022-01-10 07:03:48,307 INFO L78 Accepts]: Start accepts. Automaton has 74685 states and 119641 transitions. Word has length 129 [2022-01-10 07:03:48,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:03:48,308 INFO L470 AbstractCegarLoop]: Abstraction has 74685 states and 119641 transitions. [2022-01-10 07:03:48,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 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 07:03:48,308 INFO L276 IsEmpty]: Start isEmpty. Operand 74685 states and 119641 transitions. [2022-01-10 07:03:48,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-01-10 07:03:48,337 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:03:48,337 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:03:48,347 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 07:03:48,548 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 07:03:48,548 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:03:48,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:03:48,548 INFO L85 PathProgramCache]: Analyzing trace with hash -337967914, now seen corresponding path program 1 times [2022-01-10 07:03:48,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:03:48,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2004066574] [2022-01-10 07:03:48,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:03:48,549 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:03:48,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:03:48,550 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 07:03:48,551 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 07:03:48,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:03:48,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:03:48,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:03:49,096 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 07:03:49,097 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:03:49,097 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:03:49,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2004066574] [2022-01-10 07:03:49,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2004066574] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:03:49,097 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:03:49,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:03:49,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42277068] [2022-01-10 07:03:49,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:03:49,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:03:49,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:03:49,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:03:49,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:03:49,098 INFO L87 Difference]: Start difference. First operand 74685 states and 119641 transitions. Second operand has 5 states, 5 states have (on average 25.8) internal successors, (129), 4 states have internal predecessors, (129), 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 07:03:53,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:03:53,228 INFO L93 Difference]: Finished difference Result 103251 states and 165917 transitions. [2022-01-10 07:03:53,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:03:53,229 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.8) internal successors, (129), 4 states have internal predecessors, (129), 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 129 [2022-01-10 07:03:53,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:03:53,346 INFO L225 Difference]: With dead ends: 103251 [2022-01-10 07:03:53,346 INFO L226 Difference]: Without dead ends: 75009 [2022-01-10 07:03:53,382 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 125 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 07:03:53,382 INFO L933 BasicCegarLoop]: 570 mSDtfsCounter, 311 mSDsluCounter, 1092 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 1662 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 92 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:03:53,382 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [311 Valid, 1662 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 107 Invalid, 0 Unknown, 92 Unchecked, 0.1s Time] [2022-01-10 07:03:53,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75009 states. [2022-01-10 07:03:57,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75009 to 74769. [2022-01-10 07:03:57,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74769 states, 74768 states have (on average 1.601607639631928) internal successors, (119749), 74768 states have internal predecessors, (119749), 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 07:03:57,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74769 states to 74769 states and 119749 transitions. [2022-01-10 07:03:57,618 INFO L78 Accepts]: Start accepts. Automaton has 74769 states and 119749 transitions. Word has length 129 [2022-01-10 07:03:57,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:03:57,618 INFO L470 AbstractCegarLoop]: Abstraction has 74769 states and 119749 transitions. [2022-01-10 07:03:57,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.8) internal successors, (129), 4 states have internal predecessors, (129), 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 07:03:57,618 INFO L276 IsEmpty]: Start isEmpty. Operand 74769 states and 119749 transitions. [2022-01-10 07:03:57,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-01-10 07:03:57,648 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:03:57,648 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:03:57,655 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 07:03:57,855 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 07:03:57,856 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:03:57,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:03:57,856 INFO L85 PathProgramCache]: Analyzing trace with hash -835061381, now seen corresponding path program 1 times [2022-01-10 07:03:57,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:03:57,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [559549198] [2022-01-10 07:03:57,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:03:57,857 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:03:57,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:03:57,858 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 07:03:57,859 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 07:03:57,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:03:57,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 07:03:57,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:03:58,169 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 07:03:58,169 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:03:58,169 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:03:58,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [559549198] [2022-01-10 07:03:58,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [559549198] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:03:58,170 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:03:58,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:03:58,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038518189] [2022-01-10 07:03:58,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:03:58,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:03:58,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:03:58,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:03:58,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:03:58,171 INFO L87 Difference]: Start difference. First operand 74769 states and 119749 transitions. Second operand has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 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 07:04:02,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:04:02,038 INFO L93 Difference]: Finished difference Result 108177 states and 173505 transitions. [2022-01-10 07:04:02,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:04:02,038 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 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 129 [2022-01-10 07:04:02,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:04:02,171 INFO L225 Difference]: With dead ends: 108177 [2022-01-10 07:04:02,171 INFO L226 Difference]: Without dead ends: 74838 [2022-01-10 07:04:02,207 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 126 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 07:04:02,207 INFO L933 BasicCegarLoop]: 703 mSDtfsCounter, 1187 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1187 SdHoareTripleChecker+Valid, 1207 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:04:02,208 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1187 Valid, 1207 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:04:02,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74838 states. [2022-01-10 07:04:06,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74838 to 69144. [2022-01-10 07:04:06,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69144 states, 69143 states have (on average 1.6082611399563225) internal successors, (111200), 69143 states have internal predecessors, (111200), 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 07:04:06,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69144 states to 69144 states and 111200 transitions. [2022-01-10 07:04:06,336 INFO L78 Accepts]: Start accepts. Automaton has 69144 states and 111200 transitions. Word has length 129 [2022-01-10 07:04:06,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:04:06,336 INFO L470 AbstractCegarLoop]: Abstraction has 69144 states and 111200 transitions. [2022-01-10 07:04:06,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 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 07:04:06,336 INFO L276 IsEmpty]: Start isEmpty. Operand 69144 states and 111200 transitions. [2022-01-10 07:04:06,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-01-10 07:04:06,359 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:04:06,359 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:04:06,366 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 07:04:06,562 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 07:04:06,562 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:04:06,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:04:06,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1875864774, now seen corresponding path program 1 times [2022-01-10 07:04:06,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:04:06,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1302631239] [2022-01-10 07:04:06,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:04:06,563 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:04:06,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:04:06,565 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 07:04:06,568 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 07:04:06,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:04:06,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 07:04:06,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:04:06,812 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 07:04:06,812 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:04:06,812 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:04:06,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1302631239] [2022-01-10 07:04:06,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1302631239] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:04:06,813 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:04:06,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:04:06,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831373112] [2022-01-10 07:04:06,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:04:06,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:04:06,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:04:06,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:04:06,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:04:06,814 INFO L87 Difference]: Start difference. First operand 69144 states and 111200 transitions. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 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)