/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_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 07:22:38,953 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 07:22:38,954 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 07:22:38,994 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 07:22:39,012 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 07:22:39,014 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 07:22:39,015 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 07:22:39,017 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 07:22:39,017 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 07:22:39,018 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 07:22:39,019 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 07:22:39,023 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 07:22:39,024 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 07:22:39,025 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 07:22:39,028 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 07:22:39,028 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 07:22:39,033 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 07:22:39,039 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 07:22:39,040 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 07:22:39,040 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 07:22:39,041 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 07:22:39,064 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 07:22:39,064 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 07:22:39,065 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 07:22:39,065 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 07:22:39,066 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 07:22:39,066 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 07:22:39,066 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 07:22:39,066 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 07:22:39,066 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 07:22:39,066 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 07:22:39,067 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 07:22:39,067 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 07:22:39,067 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 07:22:39,068 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 07:22:39,068 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 07:22:39,068 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 07:22:39,068 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 07:22:39,068 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 07:22:39,068 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 07:22:39,068 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 07:22:39,068 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 07:22:39,068 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 07:22:39,068 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 07:22:39,069 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 07:22:39,069 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 07:22:39,070 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 07:22:39,070 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 07:22:39,070 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 07:22:39,070 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 07:22:39,070 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 07:22:39,070 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 07:22:39,070 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 07:22:39,070 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 07:22:39,070 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 07:22:39,269 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 07:22:39,290 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 07:22:39,292 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 07:22:39,292 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 07:22:39,293 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 07:22:39,293 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2022-01-10 07:22:39,338 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/817acc41a/7983ba5b8d49414dab39501beb354e2c/FLAGd9387223c [2022-01-10 07:22:39,795 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 07:22:39,796 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2022-01-10 07:22:39,815 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/817acc41a/7983ba5b8d49414dab39501beb354e2c/FLAGd9387223c [2022-01-10 07:22:40,324 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/817acc41a/7983ba5b8d49414dab39501beb354e2c [2022-01-10 07:22:40,326 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 07:22:40,327 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 07:22:40,330 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 07:22:40,330 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 07:22:40,332 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 07:22:40,333 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:22:40" (1/1) ... [2022-01-10 07:22:40,333 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cc6025d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:22:40, skipping insertion in model container [2022-01-10 07:22:40,333 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:22:40" (1/1) ... [2022-01-10 07:22:40,338 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 07:22:40,369 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 07:22:40,600 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_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[15966,15979] [2022-01-10 07:22:40,649 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 07:22:40,674 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 07:22:40,737 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_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[15966,15979] [2022-01-10 07:22:40,790 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 07:22:40,800 INFO L208 MainTranslator]: Completed translation [2022-01-10 07:22:40,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:22:40 WrapperNode [2022-01-10 07:22:40,800 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 07:22:40,801 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 07:22:40,801 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 07:22:40,801 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 07:22:40,806 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:22:40" (1/1) ... [2022-01-10 07:22:40,827 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:22:40" (1/1) ... [2022-01-10 07:22:40,868 INFO L137 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1276 [2022-01-10 07:22:40,868 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 07:22:40,869 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 07:22:40,869 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 07:22:40,869 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 07:22:40,876 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:22:40" (1/1) ... [2022-01-10 07:22:40,876 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:22:40" (1/1) ... [2022-01-10 07:22:40,883 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:22:40" (1/1) ... [2022-01-10 07:22:40,883 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:22:40" (1/1) ... [2022-01-10 07:22:40,919 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:22:40" (1/1) ... [2022-01-10 07:22:40,925 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:22:40" (1/1) ... [2022-01-10 07:22:40,928 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:22:40" (1/1) ... [2022-01-10 07:22:40,933 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 07:22:40,943 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 07:22:40,943 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 07:22:40,943 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 07:22:40,944 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:22:40" (1/1) ... [2022-01-10 07:22:40,960 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 07:22:40,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 07:22:41,024 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 07:22:41,043 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 07:22:41,059 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 07:22:41,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 07:22:41,059 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 07:22:41,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 07:22:41,168 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 07:22:41,169 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 07:22:42,007 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 07:22:42,019 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 07:22:42,019 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 07:22:42,022 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:22:42 BoogieIcfgContainer [2022-01-10 07:22:42,022 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 07:22:42,023 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 07:22:42,023 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 07:22:42,025 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 07:22:42,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 07:22:40" (1/3) ... [2022-01-10 07:22:42,026 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7baf6864 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:22:42, skipping insertion in model container [2022-01-10 07:22:42,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:22:40" (2/3) ... [2022-01-10 07:22:42,027 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7baf6864 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:22:42, skipping insertion in model container [2022-01-10 07:22:42,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:22:42" (3/3) ... [2022-01-10 07:22:42,030 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2022-01-10 07:22:42,034 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 07:22:42,034 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 07:22:42,075 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 07:22:42,081 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 07:22:42,082 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 07:22:42,104 INFO L276 IsEmpty]: Start isEmpty. Operand has 337 states, 335 states have (on average 1.773134328358209) internal successors, (594), 336 states have internal predecessors, (594), 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 07:22:42,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-01-10 07:22:42,123 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:22:42,124 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, 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 07:22:42,125 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:22:42,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:22:42,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1686891750, now seen corresponding path program 1 times [2022-01-10 07:22:42,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:22:42,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [116621839] [2022-01-10 07:22:42,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:22:42,140 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:22:42,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:22:42,143 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 07:22:42,151 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 07:22:42,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:22:42,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 07:22:42,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:22:42,663 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 07:22:42,663 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:22:42,664 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:22:42,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [116621839] [2022-01-10 07:22:42,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [116621839] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:22:42,664 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:22:42,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:22:42,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339351832] [2022-01-10 07:22:42,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:22:42,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:22:42,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:22:42,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:22:42,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:22:42,689 INFO L87 Difference]: Start difference. First operand has 337 states, 335 states have (on average 1.773134328358209) internal successors, (594), 336 states have internal predecessors, (594), 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 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 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 07:22:42,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:22:42,822 INFO L93 Difference]: Finished difference Result 978 states and 1727 transitions. [2022-01-10 07:22:42,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:22:42,825 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 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 153 [2022-01-10 07:22:42,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:22:42,840 INFO L225 Difference]: With dead ends: 978 [2022-01-10 07:22:42,841 INFO L226 Difference]: Without dead ends: 644 [2022-01-10 07:22:42,847 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 150 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 07:22:42,851 INFO L933 BasicCegarLoop]: 912 mSDtfsCounter, 1239 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1239 SdHoareTripleChecker+Valid, 1453 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:22:42,852 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1239 Valid, 1453 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:22:42,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2022-01-10 07:22:42,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 642. [2022-01-10 07:22:42,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 641 states have (on average 1.4617784711388455) internal successors, (937), 641 states have internal predecessors, (937), 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 07:22:42,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 937 transitions. [2022-01-10 07:22:42,933 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 937 transitions. Word has length 153 [2022-01-10 07:22:42,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:22:42,933 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 937 transitions. [2022-01-10 07:22:42,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 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 07:22:42,934 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 937 transitions. [2022-01-10 07:22:42,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-01-10 07:22:42,936 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:22:42,936 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, 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 07:22:42,950 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 07:22:43,144 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 07:22:43,145 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:22:43,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:22:43,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1661783450, now seen corresponding path program 1 times [2022-01-10 07:22:43,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:22:43,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1847782954] [2022-01-10 07:22:43,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:22:43,146 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:22:43,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:22:43,148 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 07:22:43,150 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 07:22:43,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:22:43,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:22:43,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:22:43,441 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 07:22:43,442 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:22:43,442 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:22:43,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1847782954] [2022-01-10 07:22:43,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1847782954] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:22:43,442 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:22:43,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:22:43,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440906876] [2022-01-10 07:22:43,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:22:43,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:22:43,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:22:43,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:22:43,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:22:43,444 INFO L87 Difference]: Start difference. First operand 642 states and 937 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 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 07:22:43,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:22:43,476 INFO L93 Difference]: Finished difference Result 1888 states and 2749 transitions. [2022-01-10 07:22:43,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:22:43,477 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 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 154 [2022-01-10 07:22:43,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:22:43,482 INFO L225 Difference]: With dead ends: 1888 [2022-01-10 07:22:43,482 INFO L226 Difference]: Without dead ends: 1274 [2022-01-10 07:22:43,483 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 152 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 07:22:43,484 INFO L933 BasicCegarLoop]: 972 mSDtfsCounter, 482 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 482 SdHoareTripleChecker+Valid, 1456 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:22:43,485 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [482 Valid, 1456 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:22:43,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1274 states. [2022-01-10 07:22:43,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1274 to 644. [2022-01-10 07:22:43,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 644 states, 643 states have (on average 1.4603421461897357) internal successors, (939), 643 states have internal predecessors, (939), 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 07:22:43,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 644 states to 644 states and 939 transitions. [2022-01-10 07:22:43,554 INFO L78 Accepts]: Start accepts. Automaton has 644 states and 939 transitions. Word has length 154 [2022-01-10 07:22:43,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:22:43,554 INFO L470 AbstractCegarLoop]: Abstraction has 644 states and 939 transitions. [2022-01-10 07:22:43,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 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 07:22:43,554 INFO L276 IsEmpty]: Start isEmpty. Operand 644 states and 939 transitions. [2022-01-10 07:22:43,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-01-10 07:22:43,556 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:22:43,556 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, 1, 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 07:22:43,578 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 07:22:43,764 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 07:22:43,764 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:22:43,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:22:43,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1805155399, now seen corresponding path program 1 times [2022-01-10 07:22:43,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:22:43,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [745672379] [2022-01-10 07:22:43,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:22:43,780 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:22:43,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:22:43,781 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 07:22:43,792 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 07:22:43,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:22:43,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 07:22:43,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:22:44,209 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 07:22:44,209 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:22:44,209 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:22:44,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [745672379] [2022-01-10 07:22:44,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [745672379] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:22:44,210 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:22:44,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:22:44,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688007187] [2022-01-10 07:22:44,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:22:44,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:22:44,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:22:44,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:22:44,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:22:44,212 INFO L87 Difference]: Start difference. First operand 644 states and 939 transitions. Second operand has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 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 07:22:44,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:22:44,302 INFO L93 Difference]: Finished difference Result 1870 states and 2719 transitions. [2022-01-10 07:22:44,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:22:44,303 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 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 155 [2022-01-10 07:22:44,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:22:44,307 INFO L225 Difference]: With dead ends: 1870 [2022-01-10 07:22:44,307 INFO L226 Difference]: Without dead ends: 1238 [2022-01-10 07:22:44,309 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 152 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 07:22:44,309 INFO L933 BasicCegarLoop]: 765 mSDtfsCounter, 1007 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1007 SdHoareTripleChecker+Valid, 1206 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:22:44,310 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1007 Valid, 1206 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:22:44,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1238 states. [2022-01-10 07:22:44,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1238 to 1236. [2022-01-10 07:22:44,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1236 states, 1235 states have (on average 1.4421052631578948) internal successors, (1781), 1235 states have internal predecessors, (1781), 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 07:22:44,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1236 states to 1236 states and 1781 transitions. [2022-01-10 07:22:44,357 INFO L78 Accepts]: Start accepts. Automaton has 1236 states and 1781 transitions. Word has length 155 [2022-01-10 07:22:44,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:22:44,358 INFO L470 AbstractCegarLoop]: Abstraction has 1236 states and 1781 transitions. [2022-01-10 07:22:44,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 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 07:22:44,358 INFO L276 IsEmpty]: Start isEmpty. Operand 1236 states and 1781 transitions. [2022-01-10 07:22:44,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-01-10 07:22:44,360 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:22:44,360 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, 1, 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 07:22:44,386 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 07:22:44,570 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 07:22:44,571 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:22:44,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:22:44,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1821922169, now seen corresponding path program 1 times [2022-01-10 07:22:44,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:22:44,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1382468318] [2022-01-10 07:22:44,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:22:44,573 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:22:44,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:22:44,574 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 07:22:44,600 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 07:22:44,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:22:44,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 07:22:44,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:22:44,916 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 07:22:44,916 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:22:44,916 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:22:44,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1382468318] [2022-01-10 07:22:44,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1382468318] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:22:44,917 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:22:44,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:22:44,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321494715] [2022-01-10 07:22:44,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:22:44,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:22:44,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:22:44,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:22:44,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:22:44,920 INFO L87 Difference]: Start difference. First operand 1236 states and 1781 transitions. Second operand has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 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 07:22:44,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:22:44,986 INFO L93 Difference]: Finished difference Result 2166 states and 3116 transitions. [2022-01-10 07:22:44,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:22:44,986 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 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 155 [2022-01-10 07:22:44,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:22:44,990 INFO L225 Difference]: With dead ends: 2166 [2022-01-10 07:22:44,990 INFO L226 Difference]: Without dead ends: 946 [2022-01-10 07:22:44,993 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 152 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 07:22:44,996 INFO L933 BasicCegarLoop]: 536 mSDtfsCounter, 69 mSDsluCounter, 975 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 1511 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:22:44,997 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 1511 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:22:44,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 946 states. [2022-01-10 07:22:45,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 946 to 946. [2022-01-10 07:22:45,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 946 states, 945 states have (on average 1.4370370370370371) internal successors, (1358), 945 states have internal predecessors, (1358), 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 07:22:45,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 946 states to 946 states and 1358 transitions. [2022-01-10 07:22:45,025 INFO L78 Accepts]: Start accepts. Automaton has 946 states and 1358 transitions. Word has length 155 [2022-01-10 07:22:45,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:22:45,026 INFO L470 AbstractCegarLoop]: Abstraction has 946 states and 1358 transitions. [2022-01-10 07:22:45,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 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 07:22:45,026 INFO L276 IsEmpty]: Start isEmpty. Operand 946 states and 1358 transitions. [2022-01-10 07:22:45,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-01-10 07:22:45,028 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:22:45,028 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, 1, 1, 1, 1, 1, 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 07:22:45,039 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 07:22:45,237 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 07:22:45,237 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:22:45,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:22:45,238 INFO L85 PathProgramCache]: Analyzing trace with hash -797272014, now seen corresponding path program 1 times [2022-01-10 07:22:45,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:22:45,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1471736643] [2022-01-10 07:22:45,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:22:45,239 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:22:45,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:22:45,244 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 07:22:45,246 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 07:22:45,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:22:45,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:22:45,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:22:45,500 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 07:22:45,500 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:22:45,501 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:22:45,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1471736643] [2022-01-10 07:22:45,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1471736643] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:22:45,501 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:22:45,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:22:45,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003589031] [2022-01-10 07:22:45,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:22:45,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:22:45,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:22:45,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:22:45,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:22:45,509 INFO L87 Difference]: Start difference. First operand 946 states and 1358 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 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 07:22:45,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:22:45,573 INFO L93 Difference]: Finished difference Result 2088 states and 3081 transitions. [2022-01-10 07:22:45,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:22:45,573 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 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 159 [2022-01-10 07:22:45,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:22:45,578 INFO L225 Difference]: With dead ends: 2088 [2022-01-10 07:22:45,578 INFO L226 Difference]: Without dead ends: 1325 [2022-01-10 07:22:45,579 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 157 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 07:22:45,580 INFO L933 BasicCegarLoop]: 686 mSDtfsCounter, 307 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 1044 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:22:45,580 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [307 Valid, 1044 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:22:45,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1325 states. [2022-01-10 07:22:45,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1325 to 1161. [2022-01-10 07:22:45,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1161 states, 1160 states have (on average 1.471551724137931) internal successors, (1707), 1160 states have internal predecessors, (1707), 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 07:22:45,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1161 states to 1161 states and 1707 transitions. [2022-01-10 07:22:45,616 INFO L78 Accepts]: Start accepts. Automaton has 1161 states and 1707 transitions. Word has length 159 [2022-01-10 07:22:45,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:22:45,617 INFO L470 AbstractCegarLoop]: Abstraction has 1161 states and 1707 transitions. [2022-01-10 07:22:45,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 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 07:22:45,617 INFO L276 IsEmpty]: Start isEmpty. Operand 1161 states and 1707 transitions. [2022-01-10 07:22:45,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-01-10 07:22:45,618 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:22:45,618 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:22:45,639 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-01-10 07:22:45,826 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 07:22:45,827 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:22:45,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:22:45,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1968432301, now seen corresponding path program 1 times [2022-01-10 07:22:45,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:22:45,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1266233426] [2022-01-10 07:22:45,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:22:45,828 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:22:45,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:22:45,829 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 07:22:45,831 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 07:22:45,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:22:45,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 07:22:45,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:22:46,147 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 07:22:46,148 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:22:46,148 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:22:46,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1266233426] [2022-01-10 07:22:46,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1266233426] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:22:46,148 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:22:46,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:22:46,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749843330] [2022-01-10 07:22:46,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:22:46,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:22:46,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:22:46,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:22:46,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:22:46,149 INFO L87 Difference]: Start difference. First operand 1161 states and 1707 transitions. Second operand has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 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 07:22:46,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:22:46,239 INFO L93 Difference]: Finished difference Result 3353 states and 4914 transitions. [2022-01-10 07:22:46,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:22:46,239 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 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 162 [2022-01-10 07:22:46,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:22:46,246 INFO L225 Difference]: With dead ends: 3353 [2022-01-10 07:22:46,246 INFO L226 Difference]: Without dead ends: 2227 [2022-01-10 07:22:46,250 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 159 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 07:22:46,251 INFO L933 BasicCegarLoop]: 820 mSDtfsCounter, 906 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 906 SdHoareTripleChecker+Valid, 1256 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:22:46,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [906 Valid, 1256 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:22:46,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2227 states. [2022-01-10 07:22:46,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2227 to 2225. [2022-01-10 07:22:46,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2225 states, 2224 states have (on average 1.4536870503597121) internal successors, (3233), 2224 states have internal predecessors, (3233), 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 07:22:46,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2225 states to 2225 states and 3233 transitions. [2022-01-10 07:22:46,326 INFO L78 Accepts]: Start accepts. Automaton has 2225 states and 3233 transitions. Word has length 162 [2022-01-10 07:22:46,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:22:46,326 INFO L470 AbstractCegarLoop]: Abstraction has 2225 states and 3233 transitions. [2022-01-10 07:22:46,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 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 07:22:46,326 INFO L276 IsEmpty]: Start isEmpty. Operand 2225 states and 3233 transitions. [2022-01-10 07:22:46,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-01-10 07:22:46,329 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:22:46,329 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:22:46,346 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 07:22:46,536 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 07:22:46,537 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:22:46,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:22:46,537 INFO L85 PathProgramCache]: Analyzing trace with hash 847847673, now seen corresponding path program 1 times [2022-01-10 07:22:46,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:22:46,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1550355348] [2022-01-10 07:22:46,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:22:46,538 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:22:46,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:22:46,539 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 07:22:46,577 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 07:22:46,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:22:46,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 07:22:46,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:22:46,802 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 07:22:46,803 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:22:46,803 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:22:46,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1550355348] [2022-01-10 07:22:46,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1550355348] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:22:46,803 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:22:46,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:22:46,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180153108] [2022-01-10 07:22:46,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:22:46,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:22:46,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:22:46,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:22:46,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:22:46,805 INFO L87 Difference]: Start difference. First operand 2225 states and 3233 transitions. Second operand has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 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 07:22:47,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:22:47,007 INFO L93 Difference]: Finished difference Result 6463 states and 9358 transitions. [2022-01-10 07:22:47,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:22:47,007 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 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 163 [2022-01-10 07:22:47,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:22:47,020 INFO L225 Difference]: With dead ends: 6463 [2022-01-10 07:22:47,020 INFO L226 Difference]: Without dead ends: 4273 [2022-01-10 07:22:47,024 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 160 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 07:22:47,024 INFO L933 BasicCegarLoop]: 751 mSDtfsCounter, 1083 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1083 SdHoareTripleChecker+Valid, 1188 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:22:47,024 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1083 Valid, 1188 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:22:47,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4273 states. [2022-01-10 07:22:47,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4273 to 4271. [2022-01-10 07:22:47,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4271 states, 4270 states have (on average 1.4339578454332553) internal successors, (6123), 4270 states have internal predecessors, (6123), 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 07:22:47,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4271 states to 4271 states and 6123 transitions. [2022-01-10 07:22:47,162 INFO L78 Accepts]: Start accepts. Automaton has 4271 states and 6123 transitions. Word has length 163 [2022-01-10 07:22:47,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:22:47,162 INFO L470 AbstractCegarLoop]: Abstraction has 4271 states and 6123 transitions. [2022-01-10 07:22:47,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 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 07:22:47,162 INFO L276 IsEmpty]: Start isEmpty. Operand 4271 states and 6123 transitions. [2022-01-10 07:22:47,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-01-10 07:22:47,166 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:22:47,167 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:22:47,184 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-01-10 07:22:47,374 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 07:22:47,376 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:22:47,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:22:47,377 INFO L85 PathProgramCache]: Analyzing trace with hash -823719477, now seen corresponding path program 1 times [2022-01-10 07:22:47,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:22:47,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1681950108] [2022-01-10 07:22:47,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:22:47,378 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:22:47,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:22:47,379 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 07:22:47,389 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 07:22:47,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:22:47,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 07:22:47,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:22:47,672 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 07:22:47,672 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:22:47,672 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:22:47,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1681950108] [2022-01-10 07:22:47,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1681950108] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:22:47,672 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:22:47,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:22:47,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374303921] [2022-01-10 07:22:47,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:22:47,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:22:47,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:22:47,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:22:47,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:22:47,673 INFO L87 Difference]: Start difference. First operand 4271 states and 6123 transitions. Second operand has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 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 07:22:47,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:22:47,771 INFO L93 Difference]: Finished difference Result 6301 states and 9062 transitions. [2022-01-10 07:22:47,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:22:47,771 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 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 164 [2022-01-10 07:22:47,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:22:47,781 INFO L225 Difference]: With dead ends: 6301 [2022-01-10 07:22:47,781 INFO L226 Difference]: Without dead ends: 3596 [2022-01-10 07:22:47,784 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 161 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 07:22:47,787 INFO L933 BasicCegarLoop]: 524 mSDtfsCounter, 55 mSDsluCounter, 966 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 1490 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:22:47,787 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 1490 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:22:47,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3596 states. [2022-01-10 07:22:47,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3596 to 3596. [2022-01-10 07:22:47,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3596 states, 3595 states have (on average 1.431432545201669) internal successors, (5146), 3595 states have internal predecessors, (5146), 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 07:22:47,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3596 states to 3596 states and 5146 transitions. [2022-01-10 07:22:47,921 INFO L78 Accepts]: Start accepts. Automaton has 3596 states and 5146 transitions. Word has length 164 [2022-01-10 07:22:47,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:22:47,921 INFO L470 AbstractCegarLoop]: Abstraction has 3596 states and 5146 transitions. [2022-01-10 07:22:47,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 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 07:22:47,921 INFO L276 IsEmpty]: Start isEmpty. Operand 3596 states and 5146 transitions. [2022-01-10 07:22:47,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-01-10 07:22:47,925 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:22:47,925 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:22:47,934 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 07:22:48,132 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 07:22:48,133 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:22:48,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:22:48,133 INFO L85 PathProgramCache]: Analyzing trace with hash 519752421, now seen corresponding path program 1 times [2022-01-10 07:22:48,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:22:48,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1267824324] [2022-01-10 07:22:48,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:22:48,134 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:22:48,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:22:48,136 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 07:22:48,143 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 07:22:48,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:22:48,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 07:22:48,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:22:48,459 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 07:22:48,460 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:22:48,460 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:22:48,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1267824324] [2022-01-10 07:22:48,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1267824324] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:22:48,460 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:22:48,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:22:48,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796146437] [2022-01-10 07:22:48,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:22:48,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:22:48,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:22:48,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:22:48,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:22:48,461 INFO L87 Difference]: Start difference. First operand 3596 states and 5146 transitions. Second operand has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 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 07:22:48,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:22:48,558 INFO L93 Difference]: Finished difference Result 6481 states and 9268 transitions. [2022-01-10 07:22:48,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:22:48,559 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 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 164 [2022-01-10 07:22:48,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:22:48,567 INFO L225 Difference]: With dead ends: 6481 [2022-01-10 07:22:48,568 INFO L226 Difference]: Without dead ends: 2928 [2022-01-10 07:22:48,572 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 161 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 07:22:48,572 INFO L933 BasicCegarLoop]: 515 mSDtfsCounter, 45 mSDsluCounter, 961 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 1476 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:22:48,572 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 1476 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:22:48,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2928 states. [2022-01-10 07:22:48,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2928 to 2928. [2022-01-10 07:22:48,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2928 states, 2927 states have (on average 1.4274000683293475) internal successors, (4178), 2927 states have internal predecessors, (4178), 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 07:22:48,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2928 states to 2928 states and 4178 transitions. [2022-01-10 07:22:48,680 INFO L78 Accepts]: Start accepts. Automaton has 2928 states and 4178 transitions. Word has length 164 [2022-01-10 07:22:48,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:22:48,680 INFO L470 AbstractCegarLoop]: Abstraction has 2928 states and 4178 transitions. [2022-01-10 07:22:48,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 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 07:22:48,680 INFO L276 IsEmpty]: Start isEmpty. Operand 2928 states and 4178 transitions. [2022-01-10 07:22:48,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-01-10 07:22:48,683 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:22:48,684 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:22:48,705 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2022-01-10 07:22:48,891 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 07:22:48,891 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:22:48,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:22:48,892 INFO L85 PathProgramCache]: Analyzing trace with hash -562083250, now seen corresponding path program 1 times [2022-01-10 07:22:48,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:22:48,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1036950940] [2022-01-10 07:22:48,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:22:48,892 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:22:48,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:22:48,893 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 07:22:48,894 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 07:22:48,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:22:49,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:22:49,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:22:49,201 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 07:22:49,201 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:22:49,201 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:22:49,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1036950940] [2022-01-10 07:22:49,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1036950940] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:22:49,201 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:22:49,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:22:49,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951400532] [2022-01-10 07:22:49,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:22:49,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:22:49,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:22:49,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:22:49,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:22:49,202 INFO L87 Difference]: Start difference. First operand 2928 states and 4178 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 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 07:22:49,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:22:49,317 INFO L93 Difference]: Finished difference Result 6722 states and 9906 transitions. [2022-01-10 07:22:49,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:22:49,317 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 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 168 [2022-01-10 07:22:49,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:22:49,330 INFO L225 Difference]: With dead ends: 6722 [2022-01-10 07:22:49,330 INFO L226 Difference]: Without dead ends: 4323 [2022-01-10 07:22:49,333 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 166 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 07:22:49,334 INFO L933 BasicCegarLoop]: 670 mSDtfsCounter, 297 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 1013 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:22:49,334 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [297 Valid, 1013 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:22:49,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4323 states. [2022-01-10 07:22:49,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4323 to 3909. [2022-01-10 07:22:49,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3909 states, 3908 states have (on average 1.4685261003070624) internal successors, (5739), 3908 states have internal predecessors, (5739), 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 07:22:49,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3909 states to 3909 states and 5739 transitions. [2022-01-10 07:22:49,489 INFO L78 Accepts]: Start accepts. Automaton has 3909 states and 5739 transitions. Word has length 168 [2022-01-10 07:22:49,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:22:49,490 INFO L470 AbstractCegarLoop]: Abstraction has 3909 states and 5739 transitions. [2022-01-10 07:22:49,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 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 07:22:49,490 INFO L276 IsEmpty]: Start isEmpty. Operand 3909 states and 5739 transitions. [2022-01-10 07:22:49,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-01-10 07:22:49,493 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:22:49,493 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:22:49,506 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 07:22:49,700 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 07:22:49,701 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:22:49,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:22:49,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1054434754, now seen corresponding path program 1 times [2022-01-10 07:22:49,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:22:49,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1665859518] [2022-01-10 07:22:49,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:22:49,702 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:22:49,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:22:49,703 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 07:22:49,704 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 07:22:49,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:22:49,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:22:49,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:22:50,308 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 07:22:50,308 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:22:50,308 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:22:50,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1665859518] [2022-01-10 07:22:50,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1665859518] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:22:50,308 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:22:50,308 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:22:50,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783023293] [2022-01-10 07:22:50,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:22:50,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:22:50,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:22:50,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:22:50,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:22:50,309 INFO L87 Difference]: Start difference. First operand 3909 states and 5739 transitions. Second operand has 5 states, 5 states have (on average 34.2) internal successors, (171), 4 states have internal predecessors, (171), 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 07:22:50,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:22:50,519 INFO L93 Difference]: Finished difference Result 5527 states and 8198 transitions. [2022-01-10 07:22:50,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:22:50,519 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.2) internal successors, (171), 4 states have internal predecessors, (171), 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 171 [2022-01-10 07:22:50,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:22:50,541 INFO L225 Difference]: With dead ends: 5527 [2022-01-10 07:22:50,541 INFO L226 Difference]: Without dead ends: 3938 [2022-01-10 07:22:50,543 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 167 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 07:22:50,543 INFO L933 BasicCegarLoop]: 470 mSDtfsCounter, 81 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 887 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 12 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:22:50,544 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 887 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 90 Invalid, 0 Unknown, 12 Unchecked, 0.1s Time] [2022-01-10 07:22:50,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3938 states. [2022-01-10 07:22:50,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3938 to 3918. [2022-01-10 07:22:50,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3918 states, 3917 states have (on average 1.4679601736022465) internal successors, (5750), 3917 states have internal predecessors, (5750), 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 07:22:50,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3918 states to 3918 states and 5750 transitions. [2022-01-10 07:22:50,663 INFO L78 Accepts]: Start accepts. Automaton has 3918 states and 5750 transitions. Word has length 171 [2022-01-10 07:22:50,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:22:50,663 INFO L470 AbstractCegarLoop]: Abstraction has 3918 states and 5750 transitions. [2022-01-10 07:22:50,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.2) internal successors, (171), 4 states have internal predecessors, (171), 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 07:22:50,664 INFO L276 IsEmpty]: Start isEmpty. Operand 3918 states and 5750 transitions. [2022-01-10 07:22:50,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-01-10 07:22:50,667 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:22:50,667 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:22:50,676 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 07:22:50,874 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 07:22:50,875 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:22:50,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:22:50,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1259881277, now seen corresponding path program 1 times [2022-01-10 07:22:50,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:22:50,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1149309748] [2022-01-10 07:22:50,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:22:50,876 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:22:50,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:22:50,877 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 07:22:50,879 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 07:22:50,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:22:50,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:22:50,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:22:51,188 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 07:22:51,188 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:22:51,188 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:22:51,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1149309748] [2022-01-10 07:22:51,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1149309748] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:22:51,189 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:22:51,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:22:51,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140470733] [2022-01-10 07:22:51,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:22:51,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:22:51,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:22:51,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:22:51,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:22:51,190 INFO L87 Difference]: Start difference. First operand 3918 states and 5750 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 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 07:22:51,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:22:51,354 INFO L93 Difference]: Finished difference Result 9297 states and 13818 transitions. [2022-01-10 07:22:51,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:22:51,355 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 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 171 [2022-01-10 07:22:51,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:22:51,364 INFO L225 Difference]: With dead ends: 9297 [2022-01-10 07:22:51,365 INFO L226 Difference]: Without dead ends: 6057 [2022-01-10 07:22:51,369 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 169 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 07:22:51,369 INFO L933 BasicCegarLoop]: 875 mSDtfsCounter, 392 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 1304 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:22:51,369 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [392 Valid, 1304 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:22:51,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6057 states. [2022-01-10 07:22:51,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6057 to 6055. [2022-01-10 07:22:51,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6055 states, 6054 states have (on average 1.4558969276511398) internal successors, (8814), 6054 states have internal predecessors, (8814), 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 07:22:51,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6055 states to 6055 states and 8814 transitions. [2022-01-10 07:22:51,575 INFO L78 Accepts]: Start accepts. Automaton has 6055 states and 8814 transitions. Word has length 171 [2022-01-10 07:22:51,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:22:51,575 INFO L470 AbstractCegarLoop]: Abstraction has 6055 states and 8814 transitions. [2022-01-10 07:22:51,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 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 07:22:51,575 INFO L276 IsEmpty]: Start isEmpty. Operand 6055 states and 8814 transitions. [2022-01-10 07:22:51,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-01-10 07:22:51,584 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:22:51,585 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:22:51,596 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 07:22:51,796 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 07:22:51,797 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:22:51,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:22:51,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1554624909, now seen corresponding path program 1 times [2022-01-10 07:22:51,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:22:51,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1309046393] [2022-01-10 07:22:51,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:22:51,798 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:22:51,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:22:51,799 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 07:22:51,801 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 07:22:51,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:22:51,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:22:51,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:22:52,288 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 07:22:52,289 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:22:52,289 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:22:52,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1309046393] [2022-01-10 07:22:52,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1309046393] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:22:52,289 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:22:52,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:22:52,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400613584] [2022-01-10 07:22:52,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:22:52,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:22:52,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:22:52,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:22:52,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:22:52,290 INFO L87 Difference]: Start difference. First operand 6055 states and 8814 transitions. Second operand has 5 states, 5 states have (on average 34.2) internal successors, (171), 4 states have internal predecessors, (171), 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 07:22:52,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:22:52,532 INFO L93 Difference]: Finished difference Result 9309 states and 13692 transitions. [2022-01-10 07:22:52,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:22:52,532 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.2) internal successors, (171), 4 states have internal predecessors, (171), 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 171 [2022-01-10 07:22:52,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:22:52,542 INFO L225 Difference]: With dead ends: 9309 [2022-01-10 07:22:52,542 INFO L226 Difference]: Without dead ends: 6160 [2022-01-10 07:22:52,546 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 167 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 07:22:52,547 INFO L933 BasicCegarLoop]: 490 mSDtfsCounter, 104 mSDsluCounter, 731 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 1221 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 136 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:22:52,547 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 1221 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 90 Invalid, 0 Unknown, 136 Unchecked, 0.1s Time] [2022-01-10 07:22:52,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6160 states. [2022-01-10 07:22:52,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6160 to 6081. [2022-01-10 07:22:52,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6081 states, 6080 states have (on average 1.4541118421052632) internal successors, (8841), 6080 states have internal predecessors, (8841), 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 07:22:52,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6081 states to 6081 states and 8841 transitions. [2022-01-10 07:22:52,735 INFO L78 Accepts]: Start accepts. Automaton has 6081 states and 8841 transitions. Word has length 171 [2022-01-10 07:22:52,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:22:52,735 INFO L470 AbstractCegarLoop]: Abstraction has 6081 states and 8841 transitions. [2022-01-10 07:22:52,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.2) internal successors, (171), 4 states have internal predecessors, (171), 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 07:22:52,736 INFO L276 IsEmpty]: Start isEmpty. Operand 6081 states and 8841 transitions. [2022-01-10 07:22:52,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-01-10 07:22:52,740 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:22:52,740 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:22:52,764 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 07:22:52,947 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 07:22:52,948 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:22:52,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:22:52,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1379231826, now seen corresponding path program 1 times [2022-01-10 07:22:52,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:22:52,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [665139844] [2022-01-10 07:22:52,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:22:52,949 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:22:52,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:22:52,950 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 07:22:52,964 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 07:22:53,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:22:53,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 07:22:53,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:22:53,322 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 07:22:53,322 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:22:53,322 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:22:53,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [665139844] [2022-01-10 07:22:53,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [665139844] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:22:53,322 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:22:53,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:22:53,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807687956] [2022-01-10 07:22:53,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:22:53,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:22:53,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:22:53,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:22:53,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:22:53,323 INFO L87 Difference]: Start difference. First operand 6081 states and 8841 transitions. Second operand has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 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 07:22:53,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:22:53,514 INFO L93 Difference]: Finished difference Result 12247 states and 17761 transitions. [2022-01-10 07:22:53,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:22:53,515 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 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 171 [2022-01-10 07:22:53,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:22:53,526 INFO L225 Difference]: With dead ends: 12247 [2022-01-10 07:22:53,526 INFO L226 Difference]: Without dead ends: 6251 [2022-01-10 07:22:53,533 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 168 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 07:22:53,534 INFO L933 BasicCegarLoop]: 727 mSDtfsCounter, 999 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 999 SdHoareTripleChecker+Valid, 1150 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:22:53,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [999 Valid, 1150 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:22:53,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6251 states. [2022-01-10 07:22:53,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6251 to 6202. [2022-01-10 07:22:53,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6202 states, 6201 states have (on average 1.4450895016932752) internal successors, (8961), 6201 states have internal predecessors, (8961), 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 07:22:53,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6202 states to 6202 states and 8961 transitions. [2022-01-10 07:22:53,740 INFO L78 Accepts]: Start accepts. Automaton has 6202 states and 8961 transitions. Word has length 171 [2022-01-10 07:22:53,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:22:53,740 INFO L470 AbstractCegarLoop]: Abstraction has 6202 states and 8961 transitions. [2022-01-10 07:22:53,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 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 07:22:53,740 INFO L276 IsEmpty]: Start isEmpty. Operand 6202 states and 8961 transitions. [2022-01-10 07:22:53,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-01-10 07:22:53,744 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:22:53,744 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:22:53,759 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 07:22:53,951 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 07:22:53,952 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:22:53,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:22:53,952 INFO L85 PathProgramCache]: Analyzing trace with hash -370017262, now seen corresponding path program 1 times [2022-01-10 07:22:53,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:22:53,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1129568513] [2022-01-10 07:22:53,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:22:53,953 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:22:53,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:22:53,954 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 07:22:53,954 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 07:22:54,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:22:54,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 07:22:54,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:22:54,261 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 07:22:54,261 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:22:54,261 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:22:54,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1129568513] [2022-01-10 07:22:54,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1129568513] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:22:54,261 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:22:54,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:22:54,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559493836] [2022-01-10 07:22:54,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:22:54,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:22:54,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:22:54,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:22:54,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:22:54,262 INFO L87 Difference]: Start difference. First operand 6202 states and 8961 transitions. Second operand has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 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 07:22:54,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:22:54,551 INFO L93 Difference]: Finished difference Result 15756 states and 22740 transitions. [2022-01-10 07:22:54,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:22:54,552 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 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 172 [2022-01-10 07:22:54,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:22:54,567 INFO L225 Difference]: With dead ends: 15756 [2022-01-10 07:22:54,567 INFO L226 Difference]: Without dead ends: 9724 [2022-01-10 07:22:54,576 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 169 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 07:22:54,577 INFO L933 BasicCegarLoop]: 665 mSDtfsCounter, 1139 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1139 SdHoareTripleChecker+Valid, 1089 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:22:54,577 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1139 Valid, 1089 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:22:54,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9724 states. [2022-01-10 07:22:54,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9724 to 9722. [2022-01-10 07:22:54,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9722 states, 9721 states have (on average 1.4248534101429895) internal successors, (13851), 9721 states have internal predecessors, (13851), 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 07:22:54,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9722 states to 9722 states and 13851 transitions. [2022-01-10 07:22:54,981 INFO L78 Accepts]: Start accepts. Automaton has 9722 states and 13851 transitions. Word has length 172 [2022-01-10 07:22:54,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:22:54,981 INFO L470 AbstractCegarLoop]: Abstraction has 9722 states and 13851 transitions. [2022-01-10 07:22:54,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 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 07:22:54,981 INFO L276 IsEmpty]: Start isEmpty. Operand 9722 states and 13851 transitions. [2022-01-10 07:22:54,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-10 07:22:54,991 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:22:54,991 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:22:55,023 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 07:22:55,198 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 07:22:55,198 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:22:55,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:22:55,199 INFO L85 PathProgramCache]: Analyzing trace with hash 268875850, now seen corresponding path program 1 times [2022-01-10 07:22:55,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:22:55,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1420676556] [2022-01-10 07:22:55,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:22:55,199 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:22:55,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:22:55,200 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 07:22:55,205 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 07:22:55,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:22:55,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:22:55,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:22:55,527 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 07:22:55,527 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:22:55,527 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:22:55,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1420676556] [2022-01-10 07:22:55,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1420676556] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:22:55,527 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:22:55,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:22:55,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253497091] [2022-01-10 07:22:55,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:22:55,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:22:55,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:22:55,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:22:55,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:22:55,528 INFO L87 Difference]: Start difference. First operand 9722 states and 13851 transitions. Second operand has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 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 07:22:55,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:22:55,915 INFO L93 Difference]: Finished difference Result 21520 states and 31509 transitions. [2022-01-10 07:22:55,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:22:55,916 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 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 177 [2022-01-10 07:22:55,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:22:55,979 INFO L225 Difference]: With dead ends: 21520 [2022-01-10 07:22:55,979 INFO L226 Difference]: Without dead ends: 14413 [2022-01-10 07:22:55,990 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 175 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 07:22:55,993 INFO L933 BasicCegarLoop]: 657 mSDtfsCounter, 289 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 988 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:22:55,995 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [289 Valid, 988 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:22:56,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14413 states. [2022-01-10 07:22:56,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14413 to 13455. [2022-01-10 07:22:56,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13455 states, 13454 states have (on average 1.4606065110747732) internal successors, (19651), 13454 states have internal predecessors, (19651), 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 07:22:56,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13455 states to 13455 states and 19651 transitions. [2022-01-10 07:22:56,561 INFO L78 Accepts]: Start accepts. Automaton has 13455 states and 19651 transitions. Word has length 177 [2022-01-10 07:22:56,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:22:56,561 INFO L470 AbstractCegarLoop]: Abstraction has 13455 states and 19651 transitions. [2022-01-10 07:22:56,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 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 07:22:56,562 INFO L276 IsEmpty]: Start isEmpty. Operand 13455 states and 19651 transitions. [2022-01-10 07:22:56,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-01-10 07:22:56,568 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:22:56,568 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:22:56,577 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 07:22:56,775 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 07:22:56,776 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:22:56,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:22:56,776 INFO L85 PathProgramCache]: Analyzing trace with hash -2080099194, now seen corresponding path program 1 times [2022-01-10 07:22:56,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:22:56,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [75595389] [2022-01-10 07:22:56,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:22:56,777 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:22:56,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:22:56,778 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 07:22:56,778 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 07:22:56,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:22:56,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 07:22:56,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:22:57,081 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 07:22:57,082 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:22:57,082 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:22:57,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [75595389] [2022-01-10 07:22:57,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [75595389] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:22:57,083 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:22:57,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:22:57,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394708523] [2022-01-10 07:22:57,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:22:57,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:22:57,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:22:57,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:22:57,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:22:57,085 INFO L87 Difference]: Start difference. First operand 13455 states and 19651 transitions. Second operand has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 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 07:22:57,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:22:57,538 INFO L93 Difference]: Finished difference Result 19410 states and 28415 transitions. [2022-01-10 07:22:57,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:22:57,538 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 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 178 [2022-01-10 07:22:57,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:22:57,553 INFO L225 Difference]: With dead ends: 19410 [2022-01-10 07:22:57,553 INFO L226 Difference]: Without dead ends: 12175 [2022-01-10 07:22:57,563 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 175 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 07:22:57,564 INFO L933 BasicCegarLoop]: 495 mSDtfsCounter, 23 mSDsluCounter, 944 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 1439 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:22:57,564 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 1439 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:22:57,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12175 states. [2022-01-10 07:22:58,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12175 to 12175. [2022-01-10 07:22:58,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12175 states, 12174 states have (on average 1.4633645473960901) internal successors, (17815), 12174 states have internal predecessors, (17815), 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 07:22:58,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12175 states to 12175 states and 17815 transitions. [2022-01-10 07:22:58,052 INFO L78 Accepts]: Start accepts. Automaton has 12175 states and 17815 transitions. Word has length 178 [2022-01-10 07:22:58,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:22:58,053 INFO L470 AbstractCegarLoop]: Abstraction has 12175 states and 17815 transitions. [2022-01-10 07:22:58,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 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 07:22:58,053 INFO L276 IsEmpty]: Start isEmpty. Operand 12175 states and 17815 transitions. [2022-01-10 07:22:58,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-01-10 07:22:58,058 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:22:58,058 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:22:58,068 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 07:22:58,265 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 07:22:58,265 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:22:58,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:22:58,266 INFO L85 PathProgramCache]: Analyzing trace with hash -948342582, now seen corresponding path program 1 times [2022-01-10 07:22:58,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:22:58,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [63159834] [2022-01-10 07:22:58,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:22:58,266 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:22:58,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:22:58,267 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 07:22:58,269 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 07:22:58,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:22:58,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:22:58,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:22:58,964 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 07:22:58,964 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:22:58,964 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:22:58,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [63159834] [2022-01-10 07:22:58,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [63159834] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:22:58,964 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:22:58,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:22:58,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259509626] [2022-01-10 07:22:58,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:22:58,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:22:58,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:22:58,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:22:58,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:22:58,967 INFO L87 Difference]: Start difference. First operand 12175 states and 17815 transitions. Second operand has 5 states, 5 states have (on average 36.0) internal successors, (180), 4 states have internal predecessors, (180), 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 07:22:59,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:22:59,949 INFO L93 Difference]: Finished difference Result 32948 states and 49147 transitions. [2022-01-10 07:22:59,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:22:59,950 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.0) internal successors, (180), 4 states have internal predecessors, (180), 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 180 [2022-01-10 07:22:59,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:22:59,981 INFO L225 Difference]: With dead ends: 32948 [2022-01-10 07:22:59,981 INFO L226 Difference]: Without dead ends: 22913 [2022-01-10 07:22:59,997 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:22:59,997 INFO L933 BasicCegarLoop]: 364 mSDtfsCounter, 1745 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1745 SdHoareTripleChecker+Valid, 754 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:22:59,997 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1745 Valid, 754 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:23:00,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22913 states. [2022-01-10 07:23:01,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22913 to 22911. [2022-01-10 07:23:01,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22911 states, 22910 states have (on average 1.4683107813182017) internal successors, (33639), 22910 states have internal predecessors, (33639), 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 07:23:01,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22911 states to 22911 states and 33639 transitions. [2022-01-10 07:23:01,093 INFO L78 Accepts]: Start accepts. Automaton has 22911 states and 33639 transitions. Word has length 180 [2022-01-10 07:23:01,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:23:01,093 INFO L470 AbstractCegarLoop]: Abstraction has 22911 states and 33639 transitions. [2022-01-10 07:23:01,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.0) internal successors, (180), 4 states have internal predecessors, (180), 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 07:23:01,093 INFO L276 IsEmpty]: Start isEmpty. Operand 22911 states and 33639 transitions. [2022-01-10 07:23:01,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-01-10 07:23:01,102 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:23:01,102 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:23:01,112 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 07:23:01,306 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 07:23:01,307 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:23:01,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:23:01,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1431297987, now seen corresponding path program 1 times [2022-01-10 07:23:01,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:23:01,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [611391007] [2022-01-10 07:23:01,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:23:01,308 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:23:01,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:23:01,309 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 07:23:01,313 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 07:23:01,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:23:01,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:23:01,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:23:01,912 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 07:23:01,912 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:23:01,912 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:23:01,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [611391007] [2022-01-10 07:23:01,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [611391007] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:23:01,912 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:23:01,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:23:01,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482459186] [2022-01-10 07:23:01,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:23:01,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:23:01,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:23:01,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:23:01,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:23:01,913 INFO L87 Difference]: Start difference. First operand 22911 states and 33639 transitions. Second operand has 5 states, 5 states have (on average 36.0) internal successors, (180), 4 states have internal predecessors, (180), 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 07:23:02,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:23:02,876 INFO L93 Difference]: Finished difference Result 32245 states and 47619 transitions. [2022-01-10 07:23:02,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:23:02,876 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.0) internal successors, (180), 4 states have internal predecessors, (180), 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 180 [2022-01-10 07:23:02,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:23:02,911 INFO L225 Difference]: With dead ends: 32245 [2022-01-10 07:23:02,912 INFO L226 Difference]: Without dead ends: 22983 [2022-01-10 07:23:02,927 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 176 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 07:23:02,927 INFO L933 BasicCegarLoop]: 461 mSDtfsCounter, 66 mSDsluCounter, 704 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 1165 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 15 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:23:02,927 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 1165 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 174 Invalid, 0 Unknown, 15 Unchecked, 0.1s Time] [2022-01-10 07:23:02,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22983 states. [2022-01-10 07:23:03,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22983 to 22927. [2022-01-10 07:23:03,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22927 states, 22926 states have (on average 1.46807118555352) internal successors, (33657), 22926 states have internal predecessors, (33657), 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 07:23:03,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22927 states to 22927 states and 33657 transitions. [2022-01-10 07:23:03,924 INFO L78 Accepts]: Start accepts. Automaton has 22927 states and 33657 transitions. Word has length 180 [2022-01-10 07:23:03,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:23:03,924 INFO L470 AbstractCegarLoop]: Abstraction has 22927 states and 33657 transitions. [2022-01-10 07:23:03,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.0) internal successors, (180), 4 states have internal predecessors, (180), 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 07:23:03,925 INFO L276 IsEmpty]: Start isEmpty. Operand 22927 states and 33657 transitions. [2022-01-10 07:23:03,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-01-10 07:23:03,931 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:23:03,932 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:23:03,940 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2022-01-10 07:23:04,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:23:04,132 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:23:04,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:23:04,133 INFO L85 PathProgramCache]: Analyzing trace with hash 500759663, now seen corresponding path program 1 times [2022-01-10 07:23:04,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:23:04,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1038278693] [2022-01-10 07:23:04,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:23:04,133 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:23:04,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:23:04,134 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:23:04,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-01-10 07:23:04,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:23:04,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 07:23:04,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:23:05,100 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 07:23:05,101 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:23:05,101 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:23:05,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1038278693] [2022-01-10 07:23:05,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1038278693] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:23:05,101 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:23:05,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 07:23:05,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215628488] [2022-01-10 07:23:05,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:23:05,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 07:23:05,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:23:05,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 07:23:05,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-10 07:23:05,102 INFO L87 Difference]: Start difference. First operand 22927 states and 33657 transitions. Second operand has 8 states, 8 states have (on average 22.5) internal successors, (180), 7 states have internal predecessors, (180), 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 07:23:06,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:23:06,116 INFO L93 Difference]: Finished difference Result 31449 states and 46619 transitions. [2022-01-10 07:23:06,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 07:23:06,116 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.5) internal successors, (180), 7 states have internal predecessors, (180), 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 180 [2022-01-10 07:23:06,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:23:06,147 INFO L225 Difference]: With dead ends: 31449 [2022-01-10 07:23:06,148 INFO L226 Difference]: Without dead ends: 23559 [2022-01-10 07:23:06,161 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-01-10 07:23:06,162 INFO L933 BasicCegarLoop]: 460 mSDtfsCounter, 139 mSDsluCounter, 1987 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 2447 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 165 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:23:06,162 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 2447 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 136 Invalid, 0 Unknown, 165 Unchecked, 0.1s Time] [2022-01-10 07:23:06,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23559 states. [2022-01-10 07:23:07,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23559 to 23489. [2022-01-10 07:23:07,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23489 states, 23488 states have (on average 1.4613419618528611) internal successors, (34324), 23488 states have internal predecessors, (34324), 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 07:23:07,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23489 states to 23489 states and 34324 transitions. [2022-01-10 07:23:07,279 INFO L78 Accepts]: Start accepts. Automaton has 23489 states and 34324 transitions. Word has length 180 [2022-01-10 07:23:07,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:23:07,279 INFO L470 AbstractCegarLoop]: Abstraction has 23489 states and 34324 transitions. [2022-01-10 07:23:07,279 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.5) internal successors, (180), 7 states have internal predecessors, (180), 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 07:23:07,279 INFO L276 IsEmpty]: Start isEmpty. Operand 23489 states and 34324 transitions. [2022-01-10 07:23:07,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-01-10 07:23:07,288 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:23:07,288 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:23:07,295 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-01-10 07:23:07,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:23:07,488 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:23:07,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:23:07,489 INFO L85 PathProgramCache]: Analyzing trace with hash 860562913, now seen corresponding path program 1 times [2022-01-10 07:23:07,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:23:07,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [504714683] [2022-01-10 07:23:07,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:23:07,489 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:23:07,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:23:07,490 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:23:07,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-01-10 07:23:07,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:23:07,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:23:07,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:23:07,879 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 07:23:07,880 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:23:07,880 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:23:07,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [504714683] [2022-01-10 07:23:07,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [504714683] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:23:07,880 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:23:07,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:23:07,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855577643] [2022-01-10 07:23:07,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:23:07,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:23:07,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:23:07,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:23:07,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:23:07,881 INFO L87 Difference]: Start difference. First operand 23489 states and 34324 transitions. Second operand has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 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 07:23:09,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:23:09,348 INFO L93 Difference]: Finished difference Result 61535 states and 92344 transitions. [2022-01-10 07:23:09,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:23:09,349 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 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 180 [2022-01-10 07:23:09,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:23:09,428 INFO L225 Difference]: With dead ends: 61535 [2022-01-10 07:23:09,428 INFO L226 Difference]: Without dead ends: 44113 [2022-01-10 07:23:09,457 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 178 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 07:23:09,457 INFO L933 BasicCegarLoop]: 505 mSDtfsCounter, 289 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 842 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:23:09,457 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [289 Valid, 842 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 07:23:09,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44113 states. [2022-01-10 07:23:11,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44113 to 44111. [2022-01-10 07:23:11,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44111 states, 44110 states have (on average 1.4773067331670824) internal successors, (65164), 44110 states have internal predecessors, (65164), 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 07:23:11,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44111 states to 44111 states and 65164 transitions. [2022-01-10 07:23:11,321 INFO L78 Accepts]: Start accepts. Automaton has 44111 states and 65164 transitions. Word has length 180 [2022-01-10 07:23:11,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:23:11,321 INFO L470 AbstractCegarLoop]: Abstraction has 44111 states and 65164 transitions. [2022-01-10 07:23:11,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 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 07:23:11,322 INFO L276 IsEmpty]: Start isEmpty. Operand 44111 states and 65164 transitions. [2022-01-10 07:23:11,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-01-10 07:23:11,335 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:23:11,335 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:23:11,342 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-01-10 07:23:11,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:23:11,535 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:23:11,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:23:11,536 INFO L85 PathProgramCache]: Analyzing trace with hash 2032992070, now seen corresponding path program 1 times [2022-01-10 07:23:11,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:23:11,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1877513688] [2022-01-10 07:23:11,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:23:11,537 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:23:11,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:23:11,537 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:23:11,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-01-10 07:23:11,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:23:11,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-10 07:23:11,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:23:17,947 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 07:23:17,948 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:23:17,948 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:23:17,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1877513688] [2022-01-10 07:23:17,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1877513688] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:23:17,948 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:23:17,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-10 07:23:17,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873448774] [2022-01-10 07:23:17,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:23:17,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-10 07:23:17,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:23:17,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-10 07:23:17,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=392, Unknown=0, NotChecked=0, Total=462 [2022-01-10 07:23:17,949 INFO L87 Difference]: Start difference. First operand 44111 states and 65164 transitions. Second operand has 22 states, 22 states have (on average 8.181818181818182) internal successors, (180), 22 states have internal predecessors, (180), 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 07:23:19,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:23:19,499 INFO L93 Difference]: Finished difference Result 60271 states and 89827 transitions. [2022-01-10 07:23:19,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-10 07:23:19,499 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.181818181818182) internal successors, (180), 22 states have internal predecessors, (180), 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 180 [2022-01-10 07:23:19,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:23:19,566 INFO L225 Difference]: With dead ends: 60271 [2022-01-10 07:23:19,567 INFO L226 Difference]: Without dead ends: 45031 [2022-01-10 07:23:19,593 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=79, Invalid=427, Unknown=0, NotChecked=0, Total=506 [2022-01-10 07:23:19,594 INFO L933 BasicCegarLoop]: 463 mSDtfsCounter, 140 mSDsluCounter, 5098 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 5561 SdHoareTripleChecker+Invalid, 1017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 993 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:23:19,594 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 5561 Invalid, 1017 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 993 Unchecked, 0.0s Time] [2022-01-10 07:23:19,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45031 states. [2022-01-10 07:23:21,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45031 to 44803. [2022-01-10 07:23:21,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44803 states, 44802 states have (on average 1.473103879291103) internal successors, (65998), 44802 states have internal predecessors, (65998), 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 07:23:21,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44803 states to 44803 states and 65998 transitions. [2022-01-10 07:23:21,404 INFO L78 Accepts]: Start accepts. Automaton has 44803 states and 65998 transitions. Word has length 180 [2022-01-10 07:23:21,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:23:21,404 INFO L470 AbstractCegarLoop]: Abstraction has 44803 states and 65998 transitions. [2022-01-10 07:23:21,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.181818181818182) internal successors, (180), 22 states have internal predecessors, (180), 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 07:23:21,404 INFO L276 IsEmpty]: Start isEmpty. Operand 44803 states and 65998 transitions. [2022-01-10 07:23:21,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-01-10 07:23:21,415 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:23:21,415 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:23:21,422 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Ended with exit code 0 [2022-01-10 07:23:21,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:23:21,616 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:23:21,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:23:21,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1448423365, now seen corresponding path program 1 times [2022-01-10 07:23:21,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:23:21,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1493243286] [2022-01-10 07:23:21,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:23:21,617 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:23:21,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:23:21,618 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:23:21,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-01-10 07:23:21,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:23:21,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 07:23:21,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:23:21,961 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 07:23:21,961 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:23:21,961 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:23:21,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1493243286] [2022-01-10 07:23:21,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1493243286] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:23:21,962 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:23:21,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:23:21,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912309248] [2022-01-10 07:23:21,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:23:21,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:23:21,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:23:21,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:23:21,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:23:21,963 INFO L87 Difference]: Start difference. First operand 44803 states and 65998 transitions. Second operand has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 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 07:23:25,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:23:25,174 INFO L93 Difference]: Finished difference Result 120709 states and 181215 transitions. [2022-01-10 07:23:25,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:23:25,175 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 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 180 [2022-01-10 07:23:25,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:23:25,411 INFO L225 Difference]: With dead ends: 120709 [2022-01-10 07:23:25,411 INFO L226 Difference]: Without dead ends: 84323 [2022-01-10 07:23:25,446 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 177 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 07:23:25,447 INFO L933 BasicCegarLoop]: 776 mSDtfsCounter, 407 mSDsluCounter, 1100 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 1876 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:23:25,447 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [407 Valid, 1876 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:23:25,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84323 states. [2022-01-10 07:23:28,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84323 to 46529. [2022-01-10 07:23:28,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46529 states, 46528 states have (on average 1.4646019601100413) internal successors, (68145), 46528 states have internal predecessors, (68145), 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 07:23:28,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46529 states to 46529 states and 68145 transitions. [2022-01-10 07:23:28,167 INFO L78 Accepts]: Start accepts. Automaton has 46529 states and 68145 transitions. Word has length 180 [2022-01-10 07:23:28,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:23:28,167 INFO L470 AbstractCegarLoop]: Abstraction has 46529 states and 68145 transitions. [2022-01-10 07:23:28,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 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 07:23:28,167 INFO L276 IsEmpty]: Start isEmpty. Operand 46529 states and 68145 transitions. [2022-01-10 07:23:28,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-01-10 07:23:28,181 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:23:28,181 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:23:28,188 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Ended with exit code 0 [2022-01-10 07:23:28,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:23:28,382 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:23:28,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:23:28,382 INFO L85 PathProgramCache]: Analyzing trace with hash -806009116, now seen corresponding path program 1 times [2022-01-10 07:23:28,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:23:28,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1710014594] [2022-01-10 07:23:28,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:23:28,383 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:23:28,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:23:28,388 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:23:28,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-01-10 07:23:28,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:23:28,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 07:23:28,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:23:28,723 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 07:23:28,723 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:23:28,723 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:23:28,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1710014594] [2022-01-10 07:23:28,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1710014594] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:23:28,724 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:23:28,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:23:28,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222532534] [2022-01-10 07:23:28,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:23:28,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:23:28,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:23:28,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:23:28,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:23:28,725 INFO L87 Difference]: Start difference. First operand 46529 states and 68145 transitions. Second operand has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 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 07:23:32,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:23:32,600 INFO L93 Difference]: Finished difference Result 118050 states and 178153 transitions. [2022-01-10 07:23:32,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:23:32,601 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 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 180 [2022-01-10 07:23:32,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:23:32,750 INFO L225 Difference]: With dead ends: 118050 [2022-01-10 07:23:32,750 INFO L226 Difference]: Without dead ends: 81458 [2022-01-10 07:23:32,869 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 177 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 07:23:32,870 INFO L933 BasicCegarLoop]: 779 mSDtfsCounter, 413 mSDsluCounter, 1114 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 1893 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:23:32,870 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [413 Valid, 1893 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:23:32,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81458 states. [2022-01-10 07:23:35,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81458 to 46466. [2022-01-10 07:23:35,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46466 states, 46465 states have (on average 1.4632303884644355) internal successors, (67989), 46465 states have internal predecessors, (67989), 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 07:23:35,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46466 states to 46466 states and 67989 transitions. [2022-01-10 07:23:35,827 INFO L78 Accepts]: Start accepts. Automaton has 46466 states and 67989 transitions. Word has length 180 [2022-01-10 07:23:35,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:23:35,827 INFO L470 AbstractCegarLoop]: Abstraction has 46466 states and 67989 transitions. [2022-01-10 07:23:35,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 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 07:23:35,827 INFO L276 IsEmpty]: Start isEmpty. Operand 46466 states and 67989 transitions. [2022-01-10 07:23:35,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-01-10 07:23:35,841 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:23:35,841 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:23:35,848 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-01-10 07:23:36,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:23:36,048 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:23:36,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:23:36,049 INFO L85 PathProgramCache]: Analyzing trace with hash -889570233, now seen corresponding path program 1 times [2022-01-10 07:23:36,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:23:36,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1670327175] [2022-01-10 07:23:36,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:23:36,049 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:23:36,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:23:36,050 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:23:36,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-01-10 07:23:36,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:23:36,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 07:23:36,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:23:36,366 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 07:23:36,366 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:23:36,366 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:23:36,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1670327175] [2022-01-10 07:23:36,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1670327175] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:23:36,366 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:23:36,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:23:36,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945632353] [2022-01-10 07:23:36,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:23:36,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:23:36,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:23:36,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:23:36,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:23:36,367 INFO L87 Difference]: Start difference. First operand 46466 states and 67989 transitions. Second operand has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 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 07:23:40,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:23:40,781 INFO L93 Difference]: Finished difference Result 129666 states and 192522 transitions. [2022-01-10 07:23:40,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:23:40,781 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 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 180 [2022-01-10 07:23:40,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:23:40,919 INFO L225 Difference]: With dead ends: 129666 [2022-01-10 07:23:40,919 INFO L226 Difference]: Without dead ends: 89385 [2022-01-10 07:23:40,959 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 177 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 07:23:40,962 INFO L933 BasicCegarLoop]: 801 mSDtfsCounter, 423 mSDsluCounter, 1128 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 423 SdHoareTripleChecker+Valid, 1929 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:23:40,962 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [423 Valid, 1929 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:23:41,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89385 states. [2022-01-10 07:23:44,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89385 to 49180. [2022-01-10 07:23:44,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49180 states, 49179 states have (on average 1.4436649789544318) internal successors, (70998), 49179 states have internal predecessors, (70998), 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 07:23:44,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49180 states to 49180 states and 70998 transitions. [2022-01-10 07:23:44,198 INFO L78 Accepts]: Start accepts. Automaton has 49180 states and 70998 transitions. Word has length 180 [2022-01-10 07:23:44,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:23:44,198 INFO L470 AbstractCegarLoop]: Abstraction has 49180 states and 70998 transitions. [2022-01-10 07:23:44,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 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 07:23:44,198 INFO L276 IsEmpty]: Start isEmpty. Operand 49180 states and 70998 transitions. [2022-01-10 07:23:44,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-01-10 07:23:44,217 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:23:44,217 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:23:44,224 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Ended with exit code 0 [2022-01-10 07:23:44,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:23:44,424 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:23:44,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:23:44,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1911176973, now seen corresponding path program 1 times [2022-01-10 07:23:44,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:23:44,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [731338002] [2022-01-10 07:23:44,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:23:44,425 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:23:44,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:23:44,426 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:23:44,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-01-10 07:23:44,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:23:44,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:23:44,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:23:44,914 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 07:23:44,914 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:23:44,914 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:23:44,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [731338002] [2022-01-10 07:23:44,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [731338002] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:23:44,914 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:23:44,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:23:44,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080028936] [2022-01-10 07:23:44,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:23:44,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:23:44,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:23:44,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:23:44,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:23:44,915 INFO L87 Difference]: Start difference. First operand 49180 states and 70998 transitions. Second operand has 5 states, 5 states have (on average 36.0) internal successors, (180), 4 states have internal predecessors, (180), 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 07:23:47,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:23:47,315 INFO L93 Difference]: Finished difference Result 83473 states and 120903 transitions. [2022-01-10 07:23:47,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:23:47,316 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.0) internal successors, (180), 4 states have internal predecessors, (180), 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 180 [2022-01-10 07:23:47,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:23:47,397 INFO L225 Difference]: With dead ends: 83473 [2022-01-10 07:23:47,397 INFO L226 Difference]: Without dead ends: 49180 [2022-01-10 07:23:47,424 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 176 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 07:23:47,424 INFO L933 BasicCegarLoop]: 469 mSDtfsCounter, 47 mSDsluCounter, 979 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 1448 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 113 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:23:47,425 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 1448 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 99 Invalid, 0 Unknown, 113 Unchecked, 0.1s Time] [2022-01-10 07:23:47,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49180 states.