/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/pals_opt-floodmax.4.ufo.BOUNDED-8.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 06:55:20,250 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 06:55:20,251 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 06:55:20,274 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 06:55:20,274 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 06:55:20,275 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 06:55:20,276 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 06:55:20,277 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 06:55:20,278 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 06:55:20,278 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 06:55:20,279 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 06:55:20,280 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 06:55:20,280 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 06:55:20,281 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 06:55:20,281 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 06:55:20,282 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 06:55:20,282 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 06:55:20,283 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 06:55:20,284 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 06:55:20,285 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 06:55:20,286 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 06:55:20,286 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 06:55:20,287 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 06:55:20,288 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 06:55:20,289 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 06:55:20,294 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 06:55:20,294 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 06:55:20,295 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 06:55:20,296 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 06:55:20,325 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 06:55:20,325 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 06:55:20,326 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 06:55:20,326 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 06:55:20,326 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 06:55:20,334 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 06:55:20,335 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 06:55:20,335 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 06:55:20,335 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 06:55:20,335 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 06:55:20,337 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 06:55:20,337 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 06:55:20,338 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 06:55:20,338 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 06:55:20,338 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 06:55:20,338 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 06:55:20,338 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 06:55:20,338 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 06:55:20,338 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 06:55:20,338 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 06:55:20,338 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 06:55:20,338 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 06:55:20,338 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 06:55:20,340 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 06:55:20,341 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 06:55:20,341 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 06:55:20,341 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 06:55:20,341 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 06:55:20,341 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 06:55:20,341 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 06:55:20,341 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 06:55:20,341 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 06:55:20,341 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 06:55:20,341 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 06:55:20,489 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 06:55:20,502 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 06:55:20,504 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 06:55:20,505 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 06:55:20,505 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 06:55:20,506 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.4.ufo.BOUNDED-8.pals.c [2022-01-10 06:55:20,556 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9bec8e48e/baa8e7ba28064a07b727280517403452/FLAGed578d3f1 [2022-01-10 06:55:20,987 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 06:55:20,990 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.4.ufo.BOUNDED-8.pals.c [2022-01-10 06:55:21,006 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9bec8e48e/baa8e7ba28064a07b727280517403452/FLAGed578d3f1 [2022-01-10 06:55:21,361 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9bec8e48e/baa8e7ba28064a07b727280517403452 [2022-01-10 06:55:21,362 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 06:55:21,363 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 06:55:21,372 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 06:55:21,373 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 06:55:21,375 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 06:55:21,376 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:55:21" (1/1) ... [2022-01-10 06:55:21,377 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@236a6114 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:55:21, skipping insertion in model container [2022-01-10 06:55:21,377 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:55:21" (1/1) ... [2022-01-10 06:55:21,384 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 06:55:21,418 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 06:55:21,656 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/pals_opt-floodmax.4.ufo.BOUNDED-8.pals.c[30996,31009] [2022-01-10 06:55:21,658 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:55:21,665 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 06:55:21,718 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/pals_opt-floodmax.4.ufo.BOUNDED-8.pals.c[30996,31009] [2022-01-10 06:55:21,719 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:55:21,728 INFO L208 MainTranslator]: Completed translation [2022-01-10 06:55:21,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:55:21 WrapperNode [2022-01-10 06:55:21,728 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 06:55:21,729 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 06:55:21,729 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 06:55:21,729 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 06:55:21,742 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:55:21" (1/1) ... [2022-01-10 06:55:21,755 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:55:21" (1/1) ... [2022-01-10 06:55:21,785 INFO L137 Inliner]: procedures = 23, calls = 15, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 981 [2022-01-10 06:55:21,785 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 06:55:21,786 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 06:55:21,786 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 06:55:21,786 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 06:55:21,792 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:55:21" (1/1) ... [2022-01-10 06:55:21,792 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:55:21" (1/1) ... [2022-01-10 06:55:21,797 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:55:21" (1/1) ... [2022-01-10 06:55:21,797 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:55:21" (1/1) ... [2022-01-10 06:55:21,807 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:55:21" (1/1) ... [2022-01-10 06:55:21,815 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:55:21" (1/1) ... [2022-01-10 06:55:21,817 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:55:21" (1/1) ... [2022-01-10 06:55:21,821 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 06:55:21,822 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 06:55:21,822 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 06:55:21,822 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 06:55:21,836 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:55:21" (1/1) ... [2022-01-10 06:55:21,840 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 06:55:21,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 06:55:21,885 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 06:55:21,889 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 06:55:21,921 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 06:55:21,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 06:55:21,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 06:55:21,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 06:55:22,076 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 06:55:22,077 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 06:55:22,770 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 06:55:22,782 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 06:55:22,784 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 06:55:22,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:55:22 BoogieIcfgContainer [2022-01-10 06:55:22,787 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 06:55:22,789 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 06:55:22,789 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 06:55:22,791 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 06:55:22,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:55:21" (1/3) ... [2022-01-10 06:55:22,793 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fded1d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:55:22, skipping insertion in model container [2022-01-10 06:55:22,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:55:21" (2/3) ... [2022-01-10 06:55:22,793 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fded1d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:55:22, skipping insertion in model container [2022-01-10 06:55:22,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:55:22" (3/3) ... [2022-01-10 06:55:22,794 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.ufo.BOUNDED-8.pals.c [2022-01-10 06:55:22,798 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 06:55:22,798 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 06:55:22,830 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 06:55:22,835 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 06:55:22,835 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 06:55:22,855 INFO L276 IsEmpty]: Start isEmpty. Operand has 324 states, 322 states have (on average 1.8074534161490683) internal successors, (582), 323 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:55:22,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 06:55:22,873 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:55:22,874 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] [2022-01-10 06:55:22,874 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:55:22,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:55:22,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1105173396, now seen corresponding path program 1 times [2022-01-10 06:55:22,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:55:22,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2055079566] [2022-01-10 06:55:22,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:55:22,898 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:55:22,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:55:22,900 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 06:55:22,911 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 06:55:23,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:55:23,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 1 conjunts are in the unsatisfiable core [2022-01-10 06:55:23,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:55:23,208 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 06:55:23,208 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:55:23,209 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:55:23,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2055079566] [2022-01-10 06:55:23,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2055079566] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:55:23,209 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:55:23,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 06:55:23,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306912609] [2022-01-10 06:55:23,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:55:23,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 06:55:23,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:55:23,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 06:55:23,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 06:55:23,233 INFO L87 Difference]: Start difference. First operand has 324 states, 322 states have (on average 1.8074534161490683) internal successors, (582), 323 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 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 06:55:23,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:55:23,293 INFO L93 Difference]: Finished difference Result 453 states and 802 transitions. [2022-01-10 06:55:23,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 06:55:23,295 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2022-01-10 06:55:23,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:55:23,310 INFO L225 Difference]: With dead ends: 453 [2022-01-10 06:55:23,310 INFO L226 Difference]: Without dead ends: 320 [2022-01-10 06:55:23,313 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 06:55:23,317 INFO L933 BasicCegarLoop]: 579 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:55:23,319 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 579 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:55:23,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2022-01-10 06:55:23,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 320. [2022-01-10 06:55:23,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 319 states have (on average 1.8025078369905956) internal successors, (575), 319 states have internal predecessors, (575), 0 states have call successors, (0), 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 06:55:23,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 575 transitions. [2022-01-10 06:55:23,379 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 575 transitions. Word has length 77 [2022-01-10 06:55:23,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:55:23,380 INFO L470 AbstractCegarLoop]: Abstraction has 320 states and 575 transitions. [2022-01-10 06:55:23,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 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 06:55:23,380 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 575 transitions. [2022-01-10 06:55:23,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 06:55:23,384 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:55:23,384 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] [2022-01-10 06:55:23,407 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 06:55:23,609 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 06:55:23,610 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:55:23,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:55:23,610 INFO L85 PathProgramCache]: Analyzing trace with hash 971159890, now seen corresponding path program 1 times [2022-01-10 06:55:23,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:55:23,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [597721903] [2022-01-10 06:55:23,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:55:23,611 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:55:23,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:55:23,612 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 06:55:23,614 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 06:55:23,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:55:23,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 06:55:23,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:55:23,866 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 06:55:23,867 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:55:23,867 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:55:23,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [597721903] [2022-01-10 06:55:23,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [597721903] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:55:23,867 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:55:23,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:55:23,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350037860] [2022-01-10 06:55:23,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:55:23,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:55:23,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:55:23,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:55:23,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:55:23,873 INFO L87 Difference]: Start difference. First operand 320 states and 575 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 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 06:55:23,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:55:23,953 INFO L93 Difference]: Finished difference Result 448 states and 792 transitions. [2022-01-10 06:55:23,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:55:23,954 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2022-01-10 06:55:23,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:55:23,956 INFO L225 Difference]: With dead ends: 448 [2022-01-10 06:55:23,956 INFO L226 Difference]: Without dead ends: 320 [2022-01-10 06:55:23,958 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:55:23,959 INFO L933 BasicCegarLoop]: 573 mSDtfsCounter, 3 mSDsluCounter, 1670 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2243 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:55:23,960 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 2243 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:55:23,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2022-01-10 06:55:23,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 320. [2022-01-10 06:55:23,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 319 states have (on average 1.658307210031348) internal successors, (529), 319 states have internal predecessors, (529), 0 states have call successors, (0), 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 06:55:23,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 529 transitions. [2022-01-10 06:55:23,974 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 529 transitions. Word has length 77 [2022-01-10 06:55:23,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:55:23,976 INFO L470 AbstractCegarLoop]: Abstraction has 320 states and 529 transitions. [2022-01-10 06:55:23,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 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 06:55:23,978 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 529 transitions. [2022-01-10 06:55:23,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-01-10 06:55:23,984 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:55:23,984 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] [2022-01-10 06:55:23,993 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 06:55:24,194 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 06:55:24,195 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:55:24,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:55:24,195 INFO L85 PathProgramCache]: Analyzing trace with hash 750751880, now seen corresponding path program 1 times [2022-01-10 06:55:24,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:55:24,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1205132066] [2022-01-10 06:55:24,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:55:24,196 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:55:24,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:55:24,197 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 06:55:24,199 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 06:55:24,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:55:24,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:55:24,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:55:24,479 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 06:55:24,480 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:55:24,480 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:55:24,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1205132066] [2022-01-10 06:55:24,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1205132066] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:55:24,480 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:55:24,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:55:24,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034056742] [2022-01-10 06:55:24,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:55:24,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:55:24,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:55:24,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:55:24,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:55:24,482 INFO L87 Difference]: Start difference. First operand 320 states and 529 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 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 06:55:24,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:55:24,512 INFO L93 Difference]: Finished difference Result 556 states and 933 transitions. [2022-01-10 06:55:24,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:55:24,513 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2022-01-10 06:55:24,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:55:24,515 INFO L225 Difference]: With dead ends: 556 [2022-01-10 06:55:24,515 INFO L226 Difference]: Without dead ends: 432 [2022-01-10 06:55:24,515 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 120 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 06:55:24,516 INFO L933 BasicCegarLoop]: 524 mSDtfsCounter, 183 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 998 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:55:24,516 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [183 Valid, 998 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:55:24,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2022-01-10 06:55:24,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 430. [2022-01-10 06:55:24,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 429 states have (on average 1.6643356643356644) internal successors, (714), 429 states have internal predecessors, (714), 0 states have call successors, (0), 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 06:55:24,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 714 transitions. [2022-01-10 06:55:24,524 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 714 transitions. Word has length 122 [2022-01-10 06:55:24,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:55:24,524 INFO L470 AbstractCegarLoop]: Abstraction has 430 states and 714 transitions. [2022-01-10 06:55:24,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 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 06:55:24,524 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 714 transitions. [2022-01-10 06:55:24,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-01-10 06:55:24,525 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:55:24,525 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:55:24,534 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 06:55:24,732 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 06:55:24,733 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:55:24,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:55:24,733 INFO L85 PathProgramCache]: Analyzing trace with hash -44233893, now seen corresponding path program 1 times [2022-01-10 06:55:24,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:55:24,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [527105202] [2022-01-10 06:55:24,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:55:24,734 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:55:24,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:55:24,735 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 06:55:24,736 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 06:55:24,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:55:24,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:55:24,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:55:24,984 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 06:55:24,985 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:55:24,985 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:55:24,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [527105202] [2022-01-10 06:55:24,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [527105202] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:55:24,985 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:55:24,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:55:24,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221280089] [2022-01-10 06:55:24,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:55:24,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:55:24,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:55:24,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:55:24,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:55:24,986 INFO L87 Difference]: Start difference. First operand 430 states and 714 transitions. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:55:25,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:55:25,046 INFO L93 Difference]: Finished difference Result 1262 states and 2093 transitions. [2022-01-10 06:55:25,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:55:25,046 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2022-01-10 06:55:25,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:55:25,050 INFO L225 Difference]: With dead ends: 1262 [2022-01-10 06:55:25,050 INFO L226 Difference]: Without dead ends: 843 [2022-01-10 06:55:25,053 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 122 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 06:55:25,056 INFO L933 BasicCegarLoop]: 511 mSDtfsCounter, 1434 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1434 SdHoareTripleChecker+Valid, 1009 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:55:25,057 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1434 Valid, 1009 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:55:25,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2022-01-10 06:55:25,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 841. [2022-01-10 06:55:25,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 841 states, 840 states have (on average 1.651190476190476) internal successors, (1387), 840 states have internal predecessors, (1387), 0 states have call successors, (0), 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 06:55:25,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 1387 transitions. [2022-01-10 06:55:25,098 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 1387 transitions. Word has length 125 [2022-01-10 06:55:25,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:55:25,098 INFO L470 AbstractCegarLoop]: Abstraction has 841 states and 1387 transitions. [2022-01-10 06:55:25,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:55:25,099 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 1387 transitions. [2022-01-10 06:55:25,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-10 06:55:25,100 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:55:25,100 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:55:25,108 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 06:55:25,307 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 06:55:25,308 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:55:25,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:55:25,308 INFO L85 PathProgramCache]: Analyzing trace with hash -451245212, now seen corresponding path program 1 times [2022-01-10 06:55:25,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:55:25,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [656315041] [2022-01-10 06:55:25,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:55:25,309 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:55:25,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:55:25,310 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 06:55:25,311 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 06:55:25,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:55:25,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:55:25,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:55:25,516 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 06:55:25,516 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:55:25,516 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:55:25,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [656315041] [2022-01-10 06:55:25,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [656315041] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:55:25,519 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:55:25,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:55:25,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724056622] [2022-01-10 06:55:25,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:55:25,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:55:25,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:55:25,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:55:25,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:55:25,521 INFO L87 Difference]: Start difference. First operand 841 states and 1387 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:55:25,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:55:25,544 INFO L93 Difference]: Finished difference Result 1525 states and 2555 transitions. [2022-01-10 06:55:25,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:55:25,544 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2022-01-10 06:55:25,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:55:25,547 INFO L225 Difference]: With dead ends: 1525 [2022-01-10 06:55:25,547 INFO L226 Difference]: Without dead ends: 1067 [2022-01-10 06:55:25,548 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:55:25,549 INFO L933 BasicCegarLoop]: 694 mSDtfsCounter, 200 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 1197 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:55:25,549 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [200 Valid, 1197 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:55:25,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1067 states. [2022-01-10 06:55:25,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1067 to 1051. [2022-01-10 06:55:25,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1051 states, 1050 states have (on average 1.658095238095238) internal successors, (1741), 1050 states have internal predecessors, (1741), 0 states have call successors, (0), 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 06:55:25,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 1741 transitions. [2022-01-10 06:55:25,568 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 1741 transitions. Word has length 126 [2022-01-10 06:55:25,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:55:25,568 INFO L470 AbstractCegarLoop]: Abstraction has 1051 states and 1741 transitions. [2022-01-10 06:55:25,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:55:25,569 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 1741 transitions. [2022-01-10 06:55:25,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-10 06:55:25,570 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:55:25,570 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:55:25,583 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-01-10 06:55:25,778 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 06:55:25,778 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:55:25,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:55:25,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1985490274, now seen corresponding path program 1 times [2022-01-10 06:55:25,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:55:25,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2105980011] [2022-01-10 06:55:25,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:55:25,779 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:55:25,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:55:25,780 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 06:55:25,782 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 06:55:25,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:55:25,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:55:25,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:55:26,038 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 06:55:26,038 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:55:26,038 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:55:26,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2105980011] [2022-01-10 06:55:26,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2105980011] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:55:26,038 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:55:26,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:55:26,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958542650] [2022-01-10 06:55:26,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:55:26,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:55:26,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:55:26,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:55:26,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:55:26,040 INFO L87 Difference]: Start difference. First operand 1051 states and 1741 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:55:26,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:55:26,074 INFO L93 Difference]: Finished difference Result 1704 states and 2860 transitions. [2022-01-10 06:55:26,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:55:26,075 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2022-01-10 06:55:26,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:55:26,078 INFO L225 Difference]: With dead ends: 1704 [2022-01-10 06:55:26,078 INFO L226 Difference]: Without dead ends: 1252 [2022-01-10 06:55:26,079 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:55:26,079 INFO L933 BasicCegarLoop]: 688 mSDtfsCounter, 192 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 1176 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:55:26,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [192 Valid, 1176 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:55:26,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1252 states. [2022-01-10 06:55:26,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1252 to 1250. [2022-01-10 06:55:26,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1250 states, 1249 states have (on average 1.6653322658126501) internal successors, (2080), 1249 states have internal predecessors, (2080), 0 states have call successors, (0), 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 06:55:26,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1250 states to 1250 states and 2080 transitions. [2022-01-10 06:55:26,100 INFO L78 Accepts]: Start accepts. Automaton has 1250 states and 2080 transitions. Word has length 126 [2022-01-10 06:55:26,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:55:26,101 INFO L470 AbstractCegarLoop]: Abstraction has 1250 states and 2080 transitions. [2022-01-10 06:55:26,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:55:26,101 INFO L276 IsEmpty]: Start isEmpty. Operand 1250 states and 2080 transitions. [2022-01-10 06:55:26,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-10 06:55:26,102 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:55:26,102 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] [2022-01-10 06:55:26,109 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 06:55:26,309 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 06:55:26,309 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:55:26,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:55:26,310 INFO L85 PathProgramCache]: Analyzing trace with hash 292300585, now seen corresponding path program 1 times [2022-01-10 06:55:26,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:55:26,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [168610755] [2022-01-10 06:55:26,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:55:26,310 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:55:26,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:55:26,311 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 06:55:26,312 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 06:55:26,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:55:26,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:55:26,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:55:26,535 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 06:55:26,536 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:55:26,536 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:55:26,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [168610755] [2022-01-10 06:55:26,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [168610755] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:55:26,536 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:55:26,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:55:26,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136099170] [2022-01-10 06:55:26,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:55:26,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:55:26,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:55:26,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:55:26,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:55:26,548 INFO L87 Difference]: Start difference. First operand 1250 states and 2080 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 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 06:55:26,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:55:26,593 INFO L93 Difference]: Finished difference Result 3713 states and 6177 transitions. [2022-01-10 06:55:26,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:55:26,594 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 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 127 [2022-01-10 06:55:26,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:55:26,600 INFO L225 Difference]: With dead ends: 3713 [2022-01-10 06:55:26,601 INFO L226 Difference]: Without dead ends: 2484 [2022-01-10 06:55:26,602 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 125 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 06:55:26,603 INFO L933 BasicCegarLoop]: 1032 mSDtfsCounter, 513 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 1546 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:55:26,603 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [513 Valid, 1546 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:55:26,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2484 states. [2022-01-10 06:55:26,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2484 to 1263. [2022-01-10 06:55:26,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1263 states, 1262 states have (on average 1.6632329635499208) internal successors, (2099), 1262 states have internal predecessors, (2099), 0 states have call successors, (0), 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 06:55:26,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1263 states to 1263 states and 2099 transitions. [2022-01-10 06:55:26,635 INFO L78 Accepts]: Start accepts. Automaton has 1263 states and 2099 transitions. Word has length 127 [2022-01-10 06:55:26,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:55:26,635 INFO L470 AbstractCegarLoop]: Abstraction has 1263 states and 2099 transitions. [2022-01-10 06:55:26,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 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 06:55:26,635 INFO L276 IsEmpty]: Start isEmpty. Operand 1263 states and 2099 transitions. [2022-01-10 06:55:26,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-10 06:55:26,637 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:55:26,637 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:55:26,647 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-01-10 06:55:26,844 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 06:55:26,844 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:55:26,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:55:26,845 INFO L85 PathProgramCache]: Analyzing trace with hash 2063465312, now seen corresponding path program 1 times [2022-01-10 06:55:26,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:55:26,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [11810820] [2022-01-10 06:55:26,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:55:26,845 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:55:26,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:55:26,846 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 06:55:26,848 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 06:55:26,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:55:26,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:55:26,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:55:27,124 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 06:55:27,124 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:55:27,124 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:55:27,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [11810820] [2022-01-10 06:55:27,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [11810820] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:55:27,125 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:55:27,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:55:27,125 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123582347] [2022-01-10 06:55:27,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:55:27,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:55:27,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:55:27,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:55:27,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:55:27,126 INFO L87 Difference]: Start difference. First operand 1263 states and 2099 transitions. Second operand has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 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 06:55:27,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:55:27,188 INFO L93 Difference]: Finished difference Result 3698 states and 6148 transitions. [2022-01-10 06:55:27,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:55:27,188 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 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 127 [2022-01-10 06:55:27,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:55:27,195 INFO L225 Difference]: With dead ends: 3698 [2022-01-10 06:55:27,195 INFO L226 Difference]: Without dead ends: 2462 [2022-01-10 06:55:27,197 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 124 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 06:55:27,197 INFO L933 BasicCegarLoop]: 709 mSDtfsCounter, 1224 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1224 SdHoareTripleChecker+Valid, 1207 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:55:27,197 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1224 Valid, 1207 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:55:27,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2462 states. [2022-01-10 06:55:27,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2462 to 2460. [2022-01-10 06:55:27,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2460 states, 2459 states have (on average 1.65392435949573) internal successors, (4067), 2459 states have internal predecessors, (4067), 0 states have call successors, (0), 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 06:55:27,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2460 states to 2460 states and 4067 transitions. [2022-01-10 06:55:27,239 INFO L78 Accepts]: Start accepts. Automaton has 2460 states and 4067 transitions. Word has length 127 [2022-01-10 06:55:27,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:55:27,239 INFO L470 AbstractCegarLoop]: Abstraction has 2460 states and 4067 transitions. [2022-01-10 06:55:27,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 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 06:55:27,240 INFO L276 IsEmpty]: Start isEmpty. Operand 2460 states and 4067 transitions. [2022-01-10 06:55:27,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-01-10 06:55:27,241 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:55:27,241 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:55:27,255 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 06:55:27,455 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 06:55:27,456 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:55:27,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:55:27,456 INFO L85 PathProgramCache]: Analyzing trace with hash -518499849, now seen corresponding path program 1 times [2022-01-10 06:55:27,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:55:27,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [712624317] [2022-01-10 06:55:27,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:55:27,457 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:55:27,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:55:27,458 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 06:55:27,459 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 06:55:27,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:55:27,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:55:27,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:55:27,661 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 06:55:27,662 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:55:27,662 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:55:27,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [712624317] [2022-01-10 06:55:27,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [712624317] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:55:27,662 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:55:27,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:55:27,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897960472] [2022-01-10 06:55:27,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:55:27,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:55:27,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:55:27,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:55:27,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:55:27,663 INFO L87 Difference]: Start difference. First operand 2460 states and 4067 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:55:27,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:55:27,712 INFO L93 Difference]: Finished difference Result 7309 states and 12086 transitions. [2022-01-10 06:55:27,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:55:27,713 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2022-01-10 06:55:27,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:55:27,726 INFO L225 Difference]: With dead ends: 7309 [2022-01-10 06:55:27,726 INFO L226 Difference]: Without dead ends: 4892 [2022-01-10 06:55:27,729 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 127 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 06:55:27,730 INFO L933 BasicCegarLoop]: 1031 mSDtfsCounter, 507 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 507 SdHoareTripleChecker+Valid, 1545 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:55:27,730 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [507 Valid, 1545 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:55:27,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4892 states. [2022-01-10 06:55:27,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4892 to 2474. [2022-01-10 06:55:27,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2474 states, 2473 states have (on average 1.6510311362717347) internal successors, (4083), 2473 states have internal predecessors, (4083), 0 states have call successors, (0), 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 06:55:27,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2474 states to 2474 states and 4083 transitions. [2022-01-10 06:55:27,790 INFO L78 Accepts]: Start accepts. Automaton has 2474 states and 4083 transitions. Word has length 129 [2022-01-10 06:55:27,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:55:27,790 INFO L470 AbstractCegarLoop]: Abstraction has 2474 states and 4083 transitions. [2022-01-10 06:55:27,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:55:27,790 INFO L276 IsEmpty]: Start isEmpty. Operand 2474 states and 4083 transitions. [2022-01-10 06:55:27,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-01-10 06:55:27,792 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:55:27,792 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:55:27,819 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-01-10 06:55:27,999 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 06:55:27,999 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:55:28,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:55:28,000 INFO L85 PathProgramCache]: Analyzing trace with hash -241338588, now seen corresponding path program 1 times [2022-01-10 06:55:28,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:55:28,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1804176925] [2022-01-10 06:55:28,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:55:28,001 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:55:28,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:55:28,002 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 06:55:28,003 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 06:55:28,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:55:28,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:55:28,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:55:28,293 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 06:55:28,294 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:55:28,294 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:55:28,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1804176925] [2022-01-10 06:55:28,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1804176925] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:55:28,294 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:55:28,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:55:28,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901872703] [2022-01-10 06:55:28,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:55:28,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:55:28,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:55:28,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:55:28,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:55:28,295 INFO L87 Difference]: Start difference. First operand 2474 states and 4083 transitions. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:55:28,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:55:28,392 INFO L93 Difference]: Finished difference Result 7189 states and 11873 transitions. [2022-01-10 06:55:28,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:55:28,393 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2022-01-10 06:55:28,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:55:28,407 INFO L225 Difference]: With dead ends: 7189 [2022-01-10 06:55:28,407 INFO L226 Difference]: Without dead ends: 4756 [2022-01-10 06:55:28,411 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 127 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 06:55:28,412 INFO L933 BasicCegarLoop]: 706 mSDtfsCounter, 1214 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1214 SdHoareTripleChecker+Valid, 1204 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:55:28,413 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1214 Valid, 1204 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:55:28,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4756 states. [2022-01-10 06:55:28,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4756 to 4754. [2022-01-10 06:55:28,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4754 states, 4753 states have (on average 1.641279192089207) internal successors, (7801), 4753 states have internal predecessors, (7801), 0 states have call successors, (0), 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 06:55:28,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4754 states to 4754 states and 7801 transitions. [2022-01-10 06:55:28,510 INFO L78 Accepts]: Start accepts. Automaton has 4754 states and 7801 transitions. Word has length 130 [2022-01-10 06:55:28,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:55:28,510 INFO L470 AbstractCegarLoop]: Abstraction has 4754 states and 7801 transitions. [2022-01-10 06:55:28,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:55:28,510 INFO L276 IsEmpty]: Start isEmpty. Operand 4754 states and 7801 transitions. [2022-01-10 06:55:28,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-01-10 06:55:28,514 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:55:28,514 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] [2022-01-10 06:55:28,522 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-01-10 06:55:28,722 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 06:55:28,722 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:55:28,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:55:28,723 INFO L85 PathProgramCache]: Analyzing trace with hash 218786757, now seen corresponding path program 1 times [2022-01-10 06:55:28,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:55:28,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1552032724] [2022-01-10 06:55:28,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:55:28,723 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:55:28,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:55:28,724 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 06:55:28,726 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 06:55:28,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:55:28,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:55:28,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:55:28,946 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 06:55:28,946 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:55:28,946 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:55:28,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1552032724] [2022-01-10 06:55:28,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1552032724] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:55:28,946 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:55:28,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:55:28,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146272184] [2022-01-10 06:55:28,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:55:28,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:55:28,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:55:28,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:55:28,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:55:28,948 INFO L87 Difference]: Start difference. First operand 4754 states and 7801 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 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 06:55:29,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:55:29,105 INFO L93 Difference]: Finished difference Result 16945 states and 27686 transitions. [2022-01-10 06:55:29,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:55:29,106 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 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 131 [2022-01-10 06:55:29,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:55:29,146 INFO L225 Difference]: With dead ends: 16945 [2022-01-10 06:55:29,147 INFO L226 Difference]: Without dead ends: 12735 [2022-01-10 06:55:29,155 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 128 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 06:55:29,155 INFO L933 BasicCegarLoop]: 1209 mSDtfsCounter, 1183 mSDsluCounter, 1404 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1183 SdHoareTripleChecker+Valid, 2613 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:55:29,155 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1183 Valid, 2613 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:55:29,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12735 states. [2022-01-10 06:55:29,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12735 to 5215. [2022-01-10 06:55:29,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5215 states, 5214 states have (on average 1.6448024549290372) internal successors, (8576), 5214 states have internal predecessors, (8576), 0 states have call successors, (0), 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 06:55:29,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5215 states to 5215 states and 8576 transitions. [2022-01-10 06:55:29,331 INFO L78 Accepts]: Start accepts. Automaton has 5215 states and 8576 transitions. Word has length 131 [2022-01-10 06:55:29,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:55:29,331 INFO L470 AbstractCegarLoop]: Abstraction has 5215 states and 8576 transitions. [2022-01-10 06:55:29,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 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 06:55:29,331 INFO L276 IsEmpty]: Start isEmpty. Operand 5215 states and 8576 transitions. [2022-01-10 06:55:29,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-10 06:55:29,337 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:55:29,337 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:55:29,352 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 06:55:29,552 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 06:55:29,552 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:55:29,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:55:29,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1506613695, now seen corresponding path program 1 times [2022-01-10 06:55:29,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:55:29,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1456955156] [2022-01-10 06:55:29,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:55:29,553 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:55:29,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:55:29,554 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 06:55:29,581 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 06:55:29,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:55:29,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:55:29,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:55:29,864 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 06:55:29,864 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:55:29,864 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:55:29,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1456955156] [2022-01-10 06:55:29,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1456955156] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:55:29,865 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:55:29,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:55:29,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007385933] [2022-01-10 06:55:29,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:55:29,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:55:29,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:55:29,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:55:29,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:55:29,866 INFO L87 Difference]: Start difference. First operand 5215 states and 8576 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 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 06:55:29,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:55:29,960 INFO L93 Difference]: Finished difference Result 11436 states and 19040 transitions. [2022-01-10 06:55:29,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:55:29,961 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2022-01-10 06:55:29,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:55:29,972 INFO L225 Difference]: With dead ends: 11436 [2022-01-10 06:55:29,972 INFO L226 Difference]: Without dead ends: 8178 [2022-01-10 06:55:29,974 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 130 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 06:55:29,975 INFO L933 BasicCegarLoop]: 539 mSDtfsCounter, 181 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 1022 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 06:55:29,975 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [181 Valid, 1022 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:55:29,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8178 states. [2022-01-10 06:55:30,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8178 to 8176. [2022-01-10 06:55:30,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8176 states, 8175 states have (on average 1.653822629969419) internal successors, (13520), 8175 states have internal predecessors, (13520), 0 states have call successors, (0), 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 06:55:30,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8176 states to 8176 states and 13520 transitions. [2022-01-10 06:55:30,144 INFO L78 Accepts]: Start accepts. Automaton has 8176 states and 13520 transitions. Word has length 132 [2022-01-10 06:55:30,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:55:30,144 INFO L470 AbstractCegarLoop]: Abstraction has 8176 states and 13520 transitions. [2022-01-10 06:55:30,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 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 06:55:30,144 INFO L276 IsEmpty]: Start isEmpty. Operand 8176 states and 13520 transitions. [2022-01-10 06:55:30,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-01-10 06:55:30,150 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:55:30,150 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:55:30,160 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 06:55:30,361 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 06:55:30,361 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:55:30,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:55:30,362 INFO L85 PathProgramCache]: Analyzing trace with hash 824686124, now seen corresponding path program 1 times [2022-01-10 06:55:30,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:55:30,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [534929700] [2022-01-10 06:55:30,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:55:30,363 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:55:30,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:55:30,364 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 06:55:30,365 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 06:55:30,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:55:30,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:55:30,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:55:30,656 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 06:55:30,656 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:55:30,656 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:55:30,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [534929700] [2022-01-10 06:55:30,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [534929700] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:55:30,657 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:55:30,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:55:30,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268856009] [2022-01-10 06:55:30,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:55:30,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:55:30,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:55:30,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:55:30,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:55:30,658 INFO L87 Difference]: Start difference. First operand 8176 states and 13520 transitions. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 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 06:55:30,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:55:30,875 INFO L93 Difference]: Finished difference Result 23840 states and 39430 transitions. [2022-01-10 06:55:30,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:55:30,876 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 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 135 [2022-01-10 06:55:30,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:55:30,902 INFO L225 Difference]: With dead ends: 23840 [2022-01-10 06:55:30,902 INFO L226 Difference]: Without dead ends: 15899 [2022-01-10 06:55:30,912 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 132 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 06:55:30,913 INFO L933 BasicCegarLoop]: 533 mSDtfsCounter, 1332 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1332 SdHoareTripleChecker+Valid, 1031 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:55:30,913 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1332 Valid, 1031 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:55:30,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15899 states. [2022-01-10 06:55:31,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15899 to 15897. [2022-01-10 06:55:31,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15897 states, 15896 states have (on average 1.643935581278309) internal successors, (26132), 15896 states have internal predecessors, (26132), 0 states have call successors, (0), 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 06:55:31,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15897 states to 15897 states and 26132 transitions. [2022-01-10 06:55:31,254 INFO L78 Accepts]: Start accepts. Automaton has 15897 states and 26132 transitions. Word has length 135 [2022-01-10 06:55:31,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:55:31,254 INFO L470 AbstractCegarLoop]: Abstraction has 15897 states and 26132 transitions. [2022-01-10 06:55:31,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 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 06:55:31,255 INFO L276 IsEmpty]: Start isEmpty. Operand 15897 states and 26132 transitions. [2022-01-10 06:55:31,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-01-10 06:55:31,263 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:55:31,263 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] [2022-01-10 06:55:31,279 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 06:55:31,470 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 06:55:31,470 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:55:31,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:55:31,470 INFO L85 PathProgramCache]: Analyzing trace with hash 590539035, now seen corresponding path program 1 times [2022-01-10 06:55:31,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:55:31,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1297309370] [2022-01-10 06:55:31,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:55:31,471 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:55:31,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:55:31,472 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 06:55:31,473 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 06:55:31,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:55:31,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:55:31,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:55:31,705 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 06:55:31,705 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:55:31,705 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:55:31,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1297309370] [2022-01-10 06:55:31,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1297309370] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:55:31,706 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:55:31,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:55:31,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983881476] [2022-01-10 06:55:31,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:55:31,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:55:31,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:55:31,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:55:31,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:55:31,707 INFO L87 Difference]: Start difference. First operand 15897 states and 26132 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 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 06:55:32,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:55:32,052 INFO L93 Difference]: Finished difference Result 34048 states and 56565 transitions. [2022-01-10 06:55:32,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:55:32,052 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 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 136 [2022-01-10 06:55:32,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:55:32,089 INFO L225 Difference]: With dead ends: 34048 [2022-01-10 06:55:32,089 INFO L226 Difference]: Without dead ends: 21814 [2022-01-10 06:55:32,098 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 134 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 06:55:32,099 INFO L933 BasicCegarLoop]: 539 mSDtfsCounter, 190 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 1043 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:55:32,099 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [190 Valid, 1043 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:55:32,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21814 states. [2022-01-10 06:55:32,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21814 to 21408. [2022-01-10 06:55:32,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21408 states, 21407 states have (on average 1.6395104405101135) internal successors, (35097), 21407 states have internal predecessors, (35097), 0 states have call successors, (0), 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 06:55:32,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21408 states to 21408 states and 35097 transitions. [2022-01-10 06:55:32,507 INFO L78 Accepts]: Start accepts. Automaton has 21408 states and 35097 transitions. Word has length 136 [2022-01-10 06:55:32,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:55:32,507 INFO L470 AbstractCegarLoop]: Abstraction has 21408 states and 35097 transitions. [2022-01-10 06:55:32,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 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 06:55:32,507 INFO L276 IsEmpty]: Start isEmpty. Operand 21408 states and 35097 transitions. [2022-01-10 06:55:32,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-01-10 06:55:32,516 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:55:32,517 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] [2022-01-10 06:55:32,539 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2022-01-10 06:55:32,741 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 06:55:32,742 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:55:32,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:55:32,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1107502927, now seen corresponding path program 1 times [2022-01-10 06:55:32,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:55:32,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1441357428] [2022-01-10 06:55:32,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:55:32,743 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:55:32,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:55:32,744 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 06:55:32,745 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 06:55:32,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:55:32,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:55:32,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:55:33,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:55:33,097 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:55:33,097 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:55:33,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1441357428] [2022-01-10 06:55:33,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1441357428] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:55:33,097 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:55:33,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:55:33,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124632091] [2022-01-10 06:55:33,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:55:33,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:55:33,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:55:33,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:55:33,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:55:33,098 INFO L87 Difference]: Start difference. First operand 21408 states and 35097 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 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 06:55:33,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:55:33,591 INFO L93 Difference]: Finished difference Result 60794 states and 99489 transitions. [2022-01-10 06:55:33,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:55:33,592 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 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 137 [2022-01-10 06:55:33,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:55:33,650 INFO L225 Difference]: With dead ends: 60794 [2022-01-10 06:55:33,650 INFO L226 Difference]: Without dead ends: 41213 [2022-01-10 06:55:33,677 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 135 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 06:55:33,677 INFO L933 BasicCegarLoop]: 855 mSDtfsCounter, 379 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 1363 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:55:33,677 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [379 Valid, 1363 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:55:33,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41213 states. [2022-01-10 06:55:34,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41213 to 41211. [2022-01-10 06:55:34,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41211 states, 41210 states have (on average 1.6280514438243145) internal successors, (67092), 41210 states have internal predecessors, (67092), 0 states have call successors, (0), 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 06:55:34,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41211 states to 41211 states and 67092 transitions. [2022-01-10 06:55:34,527 INFO L78 Accepts]: Start accepts. Automaton has 41211 states and 67092 transitions. Word has length 137 [2022-01-10 06:55:34,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:55:34,527 INFO L470 AbstractCegarLoop]: Abstraction has 41211 states and 67092 transitions. [2022-01-10 06:55:34,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 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 06:55:34,527 INFO L276 IsEmpty]: Start isEmpty. Operand 41211 states and 67092 transitions. [2022-01-10 06:55:34,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-01-10 06:55:34,544 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:55:34,544 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] [2022-01-10 06:55:34,559 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 06:55:34,750 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 06:55:34,751 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:55:34,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:55:34,751 INFO L85 PathProgramCache]: Analyzing trace with hash -331419895, now seen corresponding path program 1 times [2022-01-10 06:55:34,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:55:34,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1212059396] [2022-01-10 06:55:34,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:55:34,752 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:55:34,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:55:34,753 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 06:55:34,754 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 06:55:34,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:55:34,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:55:34,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:55:34,986 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 06:55:34,986 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:55:34,986 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:55:34,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1212059396] [2022-01-10 06:55:34,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1212059396] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:55:34,986 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:55:34,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:55:34,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767399659] [2022-01-10 06:55:34,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:55:34,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:55:34,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:55:34,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:55:34,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:55:34,987 INFO L87 Difference]: Start difference. First operand 41211 states and 67092 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 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 06:55:35,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:55:35,587 INFO L93 Difference]: Finished difference Result 75085 states and 123180 transitions. [2022-01-10 06:55:35,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:55:35,588 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 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 137 [2022-01-10 06:55:35,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:55:35,684 INFO L225 Difference]: With dead ends: 75085 [2022-01-10 06:55:35,684 INFO L226 Difference]: Without dead ends: 51611 [2022-01-10 06:55:35,713 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 135 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 06:55:35,715 INFO L933 BasicCegarLoop]: 674 mSDtfsCounter, 182 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 1163 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:55:35,715 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [182 Valid, 1163 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:55:35,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51611 states. [2022-01-10 06:55:36,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51611 to 51609. [2022-01-10 06:55:36,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51609 states, 51608 states have (on average 1.6300186017671678) internal successors, (84122), 51608 states have internal predecessors, (84122), 0 states have call successors, (0), 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 06:55:36,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51609 states to 51609 states and 84122 transitions. [2022-01-10 06:55:36,973 INFO L78 Accepts]: Start accepts. Automaton has 51609 states and 84122 transitions. Word has length 137 [2022-01-10 06:55:36,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:55:36,973 INFO L470 AbstractCegarLoop]: Abstraction has 51609 states and 84122 transitions. [2022-01-10 06:55:36,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 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 06:55:36,974 INFO L276 IsEmpty]: Start isEmpty. Operand 51609 states and 84122 transitions. [2022-01-10 06:55:36,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-01-10 06:55:36,994 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:55:36,994 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] [2022-01-10 06:55:37,001 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 06:55:37,201 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 06:55:37,203 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:55:37,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:55:37,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1946294349, now seen corresponding path program 1 times [2022-01-10 06:55:37,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:55:37,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [319285676] [2022-01-10 06:55:37,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:55:37,204 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:55:37,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:55:37,205 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 06:55:37,208 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 06:55:37,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:55:37,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 06:55:37,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:55:37,776 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 06:55:37,776 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:55:37,776 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:55:37,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [319285676] [2022-01-10 06:55:37,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [319285676] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:55:37,777 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:55:37,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:55:37,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429928248] [2022-01-10 06:55:37,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:55:37,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 06:55:37,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:55:37,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 06:55:37,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:55:37,778 INFO L87 Difference]: Start difference. First operand 51609 states and 84122 transitions. Second operand has 6 states, 6 states have (on average 23.0) internal successors, (138), 5 states have internal predecessors, (138), 0 states have call successors, (0), 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 06:55:38,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:55:38,532 INFO L93 Difference]: Finished difference Result 75525 states and 123275 transitions. [2022-01-10 06:55:38,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:55:38,532 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.0) internal successors, (138), 5 states have internal predecessors, (138), 0 states have call successors, (0), 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 138 [2022-01-10 06:55:38,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:55:38,611 INFO L225 Difference]: With dead ends: 75525 [2022-01-10 06:55:38,612 INFO L226 Difference]: Without dead ends: 51931 [2022-01-10 06:55:38,641 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:55:38,642 INFO L933 BasicCegarLoop]: 581 mSDtfsCounter, 369 mSDsluCounter, 1619 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 2200 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 127 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:55:38,642 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [369 Valid, 2200 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 127 Unchecked, 0.1s Time] [2022-01-10 06:55:38,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51931 states. [2022-01-10 06:55:39,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51931 to 51657. [2022-01-10 06:55:39,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51657 states, 51656 states have (on average 1.6294331733002942) internal successors, (84170), 51656 states have internal predecessors, (84170), 0 states have call successors, (0), 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 06:55:39,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51657 states to 51657 states and 84170 transitions. [2022-01-10 06:55:39,859 INFO L78 Accepts]: Start accepts. Automaton has 51657 states and 84170 transitions. Word has length 138 [2022-01-10 06:55:39,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:55:39,859 INFO L470 AbstractCegarLoop]: Abstraction has 51657 states and 84170 transitions. [2022-01-10 06:55:39,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.0) internal successors, (138), 5 states have internal predecessors, (138), 0 states have call successors, (0), 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 06:55:39,859 INFO L276 IsEmpty]: Start isEmpty. Operand 51657 states and 84170 transitions. [2022-01-10 06:55:39,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-01-10 06:55:39,871 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:55:39,871 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] [2022-01-10 06:55:39,881 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 06:55:40,081 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 06:55:40,082 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:55:40,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:55:40,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1805745739, now seen corresponding path program 1 times [2022-01-10 06:55:40,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:55:40,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1431650813] [2022-01-10 06:55:40,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:55:40,083 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:55:40,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:55:40,084 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 06:55:40,086 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 06:55:40,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:55:40,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:55:40,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:55:40,415 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 06:55:40,416 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:55:40,416 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:55:40,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1431650813] [2022-01-10 06:55:40,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1431650813] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:55:40,416 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:55:40,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:55:40,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027430574] [2022-01-10 06:55:40,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:55:40,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:55:40,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:55:40,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:55:40,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:55:40,417 INFO L87 Difference]: Start difference. First operand 51657 states and 84170 transitions. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 0 states have call successors, (0), 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 06:55:41,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:55:41,493 INFO L93 Difference]: Finished difference Result 106474 states and 173124 transitions. [2022-01-10 06:55:41,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:55:41,494 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 0 states have call successors, (0), 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 138 [2022-01-10 06:55:41,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:55:41,570 INFO L225 Difference]: With dead ends: 106474 [2022-01-10 06:55:41,570 INFO L226 Difference]: Without dead ends: 55098 [2022-01-10 06:55:41,590 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 135 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 06:55:41,591 INFO L933 BasicCegarLoop]: 695 mSDtfsCounter, 1182 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1182 SdHoareTripleChecker+Valid, 1193 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:55:41,591 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1182 Valid, 1193 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:55:41,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55098 states. [2022-01-10 06:55:42,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55098 to 52360. [2022-01-10 06:55:42,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52360 states, 52359 states have (on average 1.6298057640520254) internal successors, (85335), 52359 states have internal predecessors, (85335), 0 states have call successors, (0), 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 06:55:42,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52360 states to 52360 states and 85335 transitions. [2022-01-10 06:55:42,717 INFO L78 Accepts]: Start accepts. Automaton has 52360 states and 85335 transitions. Word has length 138 [2022-01-10 06:55:42,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:55:42,718 INFO L470 AbstractCegarLoop]: Abstraction has 52360 states and 85335 transitions. [2022-01-10 06:55:42,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 0 states have call successors, (0), 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 06:55:42,718 INFO L276 IsEmpty]: Start isEmpty. Operand 52360 states and 85335 transitions. [2022-01-10 06:55:42,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-01-10 06:55:42,732 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:55:42,732 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] [2022-01-10 06:55:42,741 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 06:55:42,941 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 06:55:42,941 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:55:42,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:55:42,942 INFO L85 PathProgramCache]: Analyzing trace with hash -686099308, now seen corresponding path program 1 times [2022-01-10 06:55:42,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:55:42,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1735228448] [2022-01-10 06:55:42,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:55:42,942 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:55:42,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:55:42,943 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 06:55:42,946 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 06:55:43,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:55:43,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:55:43,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:55:43,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:55:43,181 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:55:43,181 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:55:43,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1735228448] [2022-01-10 06:55:43,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1735228448] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:55:43,182 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:55:43,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:55:43,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519113447] [2022-01-10 06:55:43,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:55:43,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:55:43,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:55:43,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:55:43,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:55:43,183 INFO L87 Difference]: Start difference. First operand 52360 states and 85335 transitions. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 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 06:55:44,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:55:44,879 INFO L93 Difference]: Finished difference Result 152234 states and 248047 transitions. [2022-01-10 06:55:44,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:55:44,879 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 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 140 [2022-01-10 06:55:44,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:55:45,135 INFO L225 Difference]: With dead ends: 152234 [2022-01-10 06:55:45,135 INFO L226 Difference]: Without dead ends: 100311 [2022-01-10 06:55:45,160 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 137 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 06:55:45,161 INFO L933 BasicCegarLoop]: 691 mSDtfsCounter, 1277 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1277 SdHoareTripleChecker+Valid, 1190 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:55:45,161 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1277 Valid, 1190 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:55:45,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100311 states. [2022-01-10 06:55:47,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100311 to 100309. [2022-01-10 06:55:47,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100309 states, 100308 states have (on average 1.6182258643378395) internal successors, (162321), 100308 states have internal predecessors, (162321), 0 states have call successors, (0), 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 06:55:47,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100309 states to 100309 states and 162321 transitions. [2022-01-10 06:55:47,545 INFO L78 Accepts]: Start accepts. Automaton has 100309 states and 162321 transitions. Word has length 140 [2022-01-10 06:55:47,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:55:47,545 INFO L470 AbstractCegarLoop]: Abstraction has 100309 states and 162321 transitions. [2022-01-10 06:55:47,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 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 06:55:47,545 INFO L276 IsEmpty]: Start isEmpty. Operand 100309 states and 162321 transitions. [2022-01-10 06:55:47,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-10 06:55:47,569 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:55:47,569 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] [2022-01-10 06:55:47,576 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-01-10 06:55:47,769 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 06:55:47,769 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:55:47,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:55:47,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1399459479, now seen corresponding path program 1 times [2022-01-10 06:55:47,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:55:47,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [126479823] [2022-01-10 06:55:47,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:55:47,770 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:55:47,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:55:47,771 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 06:55:47,772 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 06:55:47,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:55:47,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:55:47,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:55:48,028 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 06:55:48,028 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:55:48,028 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:55:48,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [126479823] [2022-01-10 06:55:48,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [126479823] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:55:48,028 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:55:48,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:55:48,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210440802] [2022-01-10 06:55:48,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:55:48,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:55:48,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:55:48,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:55:48,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:55:48,030 INFO L87 Difference]: Start difference. First operand 100309 states and 162321 transitions. Second operand has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 0 states have call successors, (0), 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 06:55:52,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:55:52,055 INFO L93 Difference]: Finished difference Result 357073 states and 576553 transitions. [2022-01-10 06:55:52,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:55:52,056 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 0 states have call successors, (0), 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 142 [2022-01-10 06:55:52,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:55:52,561 INFO L225 Difference]: With dead ends: 357073 [2022-01-10 06:55:52,561 INFO L226 Difference]: Without dead ends: 262551 [2022-01-10 06:55:52,640 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 139 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 06:55:52,641 INFO L933 BasicCegarLoop]: 1220 mSDtfsCounter, 1130 mSDsluCounter, 1406 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1130 SdHoareTripleChecker+Valid, 2626 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:55:52,641 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1130 Valid, 2626 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:55:52,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262551 states. [2022-01-10 06:55:56,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262551 to 103687. [2022-01-10 06:55:56,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103687 states, 103686 states have (on average 1.6167081380321355) internal successors, (167630), 103686 states have internal predecessors, (167630), 0 states have call successors, (0), 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 06:55:56,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103687 states to 103687 states and 167630 transitions. [2022-01-10 06:55:56,320 INFO L78 Accepts]: Start accepts. Automaton has 103687 states and 167630 transitions. Word has length 142 [2022-01-10 06:55:56,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:55:56,320 INFO L470 AbstractCegarLoop]: Abstraction has 103687 states and 167630 transitions. [2022-01-10 06:55:56,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 0 states have call successors, (0), 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 06:55:56,321 INFO L276 IsEmpty]: Start isEmpty. Operand 103687 states and 167630 transitions. [2022-01-10 06:55:56,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-10 06:55:56,346 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:55:56,346 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:55:56,358 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 06:55:56,552 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 06:55:56,552 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:55:56,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:55:56,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1594693764, now seen corresponding path program 1 times [2022-01-10 06:55:56,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:55:56,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2068015901] [2022-01-10 06:55:56,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:55:56,553 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:55:56,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:55:56,554 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 06:55:56,555 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 06:55:56,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:55:56,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:55:56,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:55:56,771 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 06:55:56,771 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:55:56,771 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:55:56,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2068015901] [2022-01-10 06:55:56,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2068015901] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:55:56,772 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:55:56,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:55:56,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643580888] [2022-01-10 06:55:56,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:55:56,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:55:56,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:55:56,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:55:56,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:55:56,773 INFO L87 Difference]: Start difference. First operand 103687 states and 167630 transitions. Second operand has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 0 states have call successors, (0), 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 06:56:01,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:56:01,659 INFO L93 Difference]: Finished difference Result 373715 states and 603321 transitions. [2022-01-10 06:56:01,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:56:01,659 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 0 states have call successors, (0), 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 142 [2022-01-10 06:56:01,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:56:02,282 INFO L225 Difference]: With dead ends: 373715 [2022-01-10 06:56:02,282 INFO L226 Difference]: Without dead ends: 280601 [2022-01-10 06:56:02,374 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 139 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 06:56:02,374 INFO L933 BasicCegarLoop]: 1151 mSDtfsCounter, 1092 mSDsluCounter, 1371 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1092 SdHoareTripleChecker+Valid, 2522 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:56:02,375 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1092 Valid, 2522 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:56:02,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280601 states. [2022-01-10 06:56:06,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280601 to 112653. [2022-01-10 06:56:06,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112653 states, 112652 states have (on average 1.6161808046017825) internal successors, (182066), 112652 states have internal predecessors, (182066), 0 states have call successors, (0), 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 06:56:06,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112653 states to 112653 states and 182066 transitions. [2022-01-10 06:56:06,895 INFO L78 Accepts]: Start accepts. Automaton has 112653 states and 182066 transitions. Word has length 142 [2022-01-10 06:56:06,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:56:06,895 INFO L470 AbstractCegarLoop]: Abstraction has 112653 states and 182066 transitions. [2022-01-10 06:56:06,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 0 states have call successors, (0), 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 06:56:06,895 INFO L276 IsEmpty]: Start isEmpty. Operand 112653 states and 182066 transitions. [2022-01-10 06:56:06,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 06:56:06,942 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:56:06,942 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] [2022-01-10 06:56:06,948 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Ended with exit code 0 [2022-01-10 06:56:07,146 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 06:56:07,146 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:56:07,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:56:07,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1247651626, now seen corresponding path program 1 times [2022-01-10 06:56:07,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:56:07,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2130983229] [2022-01-10 06:56:07,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:56:07,147 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:56:07,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:56:07,148 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 06:56:07,149 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 06:56:07,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:56:07,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:56:07,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:56:07,426 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 06:56:07,426 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:56:07,426 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:56:07,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2130983229] [2022-01-10 06:56:07,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2130983229] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:56:07,427 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:56:07,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:56:07,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740033420] [2022-01-10 06:56:07,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:56:07,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:56:07,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:56:07,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:56:07,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:56:07,428 INFO L87 Difference]: Start difference. First operand 112653 states and 182066 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 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 06:56:11,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:56:11,313 INFO L93 Difference]: Finished difference Result 275609 states and 448746 transitions. [2022-01-10 06:56:11,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:56:11,315 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2022-01-10 06:56:11,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:56:11,667 INFO L225 Difference]: With dead ends: 275609 [2022-01-10 06:56:11,668 INFO L226 Difference]: Without dead ends: 189791 [2022-01-10 06:56:11,873 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 141 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 06:56:11,874 INFO L933 BasicCegarLoop]: 543 mSDtfsCounter, 168 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 1027 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 06:56:11,874 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [168 Valid, 1027 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:56:12,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189791 states. [2022-01-10 06:56:16,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189791 to 189789. [2022-01-10 06:56:16,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189789 states, 189788 states have (on average 1.6187588256370267) internal successors, (307221), 189788 states have internal predecessors, (307221), 0 states have call successors, (0), 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 06:56:17,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189789 states to 189789 states and 307221 transitions. [2022-01-10 06:56:17,287 INFO L78 Accepts]: Start accepts. Automaton has 189789 states and 307221 transitions. Word has length 143 [2022-01-10 06:56:17,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:56:17,288 INFO L470 AbstractCegarLoop]: Abstraction has 189789 states and 307221 transitions. [2022-01-10 06:56:17,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 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 06:56:17,288 INFO L276 IsEmpty]: Start isEmpty. Operand 189789 states and 307221 transitions. [2022-01-10 06:56:17,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-01-10 06:56:17,325 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:56:17,325 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] [2022-01-10 06:56:17,332 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-01-10 06:56:17,526 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 06:56:17,526 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:56:17,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:56:17,527 INFO L85 PathProgramCache]: Analyzing trace with hash -101035235, now seen corresponding path program 1 times [2022-01-10 06:56:17,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:56:17,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1485769712] [2022-01-10 06:56:17,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:56:17,527 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:56:17,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:56:17,529 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 06:56:17,529 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 06:56:17,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:56:17,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:56:17,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:56:17,816 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 06:56:17,816 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:56:17,816 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:56:17,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1485769712] [2022-01-10 06:56:17,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1485769712] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:56:17,816 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:56:17,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:56:17,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566149018] [2022-01-10 06:56:17,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:56:17,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:56:17,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:56:17,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:56:17,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:56:17,817 INFO L87 Difference]: Start difference. First operand 189789 states and 307221 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 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 06:56:25,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:56:25,313 INFO L93 Difference]: Finished difference Result 537312 states and 868724 transitions. [2022-01-10 06:56:25,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:56:25,314 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 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 146 [2022-01-10 06:56:25,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:56:26,074 INFO L225 Difference]: With dead ends: 537312 [2022-01-10 06:56:26,074 INFO L226 Difference]: Without dead ends: 364352 [2022-01-10 06:56:26,191 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 144 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 06:56:26,192 INFO L933 BasicCegarLoop]: 942 mSDtfsCounter, 349 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 1450 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:56:26,192 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [349 Valid, 1450 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:56:26,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364352 states.