/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.4.4.ufo.BOUNDED-8.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 06:55:13,415 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 06:55:13,417 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 06:55:13,492 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 06:55:13,493 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 06:55:13,496 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 06:55:13,500 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 06:55:13,505 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 06:55:13,506 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 06:55:13,507 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 06:55:13,508 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 06:55:13,509 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 06:55:13,509 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 06:55:13,510 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 06:55:13,513 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 06:55:13,515 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 06:55:13,516 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 06:55:13,521 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 06:55:13,526 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 06:55:13,528 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 06:55:13,529 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 06:55:13,530 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 06:55:13,531 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 06:55:13,532 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 06:55:13,534 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 06:55:13,545 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 06:55:13,546 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 06:55:13,547 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 06:55:13,549 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 06:55:13,580 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 06:55:13,580 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 06:55:13,581 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 06:55:13,581 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 06:55:13,582 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 06:55:13,582 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 06:55:13,583 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 06:55:13,583 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 06:55:13,583 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 06:55:13,583 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 06:55:13,584 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 06:55:13,584 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 06:55:13,584 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 06:55:13,584 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 06:55:13,585 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 06:55:13,585 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 06:55:13,585 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 06:55:13,585 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 06:55:13,585 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 06:55:13,585 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 06:55:13,586 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 06:55:13,586 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 06:55:13,586 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 06:55:13,586 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 06:55:13,586 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 06:55:13,586 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 06:55:13,586 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 06:55:13,587 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 06:55:13,587 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 06:55:13,587 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 06:55:13,587 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 06:55:13,587 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 06:55:13,587 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 06:55:13,587 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 06:55:13,854 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 06:55:13,881 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 06:55:13,884 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 06:55:13,885 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 06:55:13,885 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 06:55:13,886 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.4.4.ufo.BOUNDED-8.pals.c [2022-01-10 06:55:13,938 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77be9369a/c5acec3476674fb289bc462db7438a0a/FLAGba30aae9b [2022-01-10 06:55:14,401 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 06:55:14,402 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.4.4.ufo.BOUNDED-8.pals.c [2022-01-10 06:55:14,413 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77be9369a/c5acec3476674fb289bc462db7438a0a/FLAGba30aae9b [2022-01-10 06:55:14,727 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77be9369a/c5acec3476674fb289bc462db7438a0a [2022-01-10 06:55:14,729 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 06:55:14,731 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 06:55:14,732 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 06:55:14,732 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 06:55:14,735 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 06:55:14,735 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:55:14" (1/1) ... [2022-01-10 06:55:14,736 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@179ebd34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:55:14, skipping insertion in model container [2022-01-10 06:55:14,736 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:55:14" (1/1) ... [2022-01-10 06:55:14,741 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 06:55:14,788 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 06:55:15,063 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.4.4.ufo.BOUNDED-8.pals.c[30998,31011] [2022-01-10 06:55:15,065 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:55:15,076 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 06:55:15,182 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.4.4.ufo.BOUNDED-8.pals.c[30998,31011] [2022-01-10 06:55:15,183 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:55:15,196 INFO L208 MainTranslator]: Completed translation [2022-01-10 06:55:15,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:55:15 WrapperNode [2022-01-10 06:55:15,197 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 06:55:15,198 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 06:55:15,198 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 06:55:15,198 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 06:55:15,204 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:55:15" (1/1) ... [2022-01-10 06:55:15,230 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:55:15" (1/1) ... [2022-01-10 06:55:15,302 INFO L137 Inliner]: procedures = 23, calls = 15, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 981 [2022-01-10 06:55:15,302 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 06:55:15,303 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 06:55:15,303 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 06:55:15,303 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 06:55:15,321 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:55:15" (1/1) ... [2022-01-10 06:55:15,322 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:55:15" (1/1) ... [2022-01-10 06:55:15,331 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:55:15" (1/1) ... [2022-01-10 06:55:15,332 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:55:15" (1/1) ... [2022-01-10 06:55:15,347 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:55:15" (1/1) ... [2022-01-10 06:55:15,359 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:55:15" (1/1) ... [2022-01-10 06:55:15,364 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:55:15" (1/1) ... [2022-01-10 06:55:15,371 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 06:55:15,372 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 06:55:15,372 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 06:55:15,372 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 06:55:15,373 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:55:15" (1/1) ... [2022-01-10 06:55:15,380 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 06:55:15,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 06:55:15,405 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 06:55:15,431 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 06:55:15,453 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 06:55:15,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 06:55:15,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 06:55:15,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 06:55:15,609 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 06:55:15,610 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 06:55:16,514 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 06:55:16,529 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 06:55:16,529 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 06:55:16,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:55:16 BoogieIcfgContainer [2022-01-10 06:55:16,532 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 06:55:16,533 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 06:55:16,533 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 06:55:16,536 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 06:55:16,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:55:14" (1/3) ... [2022-01-10 06:55:16,537 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71f2c6cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:55:16, skipping insertion in model container [2022-01-10 06:55:16,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:55:15" (2/3) ... [2022-01-10 06:55:16,538 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71f2c6cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:55:16, skipping insertion in model container [2022-01-10 06:55:16,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:55:16" (3/3) ... [2022-01-10 06:55:16,539 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.4.ufo.BOUNDED-8.pals.c [2022-01-10 06:55:16,544 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 06:55:16,545 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 06:55:16,590 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 06:55:16,596 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 06:55:16,597 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 06:55:16,615 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 06:55:16,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 06:55:16,627 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:55:16,627 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 06:55:16,628 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:55:16,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:55:16,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1105173396, now seen corresponding path program 1 times [2022-01-10 06:55:16,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:55:16,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1468311365] [2022-01-10 06:55:16,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:55:16,647 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:55:16,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:55:16,653 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 06:55:16,654 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 06:55:16,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:55:16,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 1 conjunts are in the unsatisfiable core [2022-01-10 06:55:16,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:55:17,031 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 06:55:17,032 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:55:17,032 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:55:17,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1468311365] [2022-01-10 06:55:17,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1468311365] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:55:17,033 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:55:17,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 06:55:17,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856920597] [2022-01-10 06:55:17,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:55:17,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 06:55:17,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:55:17,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 06:55:17,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 06:55:17,072 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 06:55:17,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:55:17,126 INFO L93 Difference]: Finished difference Result 453 states and 802 transitions. [2022-01-10 06:55:17,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 06:55:17,128 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 06:55:17,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:55:17,148 INFO L225 Difference]: With dead ends: 453 [2022-01-10 06:55:17,149 INFO L226 Difference]: Without dead ends: 320 [2022-01-10 06:55:17,153 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 06:55:17,157 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 06:55:17,159 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 06:55:17,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2022-01-10 06:55:17,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 320. [2022-01-10 06:55:17,227 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 06:55:17,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 575 transitions. [2022-01-10 06:55:17,237 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 575 transitions. Word has length 77 [2022-01-10 06:55:17,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:55:17,238 INFO L470 AbstractCegarLoop]: Abstraction has 320 states and 575 transitions. [2022-01-10 06:55:17,238 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 06:55:17,239 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 575 transitions. [2022-01-10 06:55:17,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 06:55:17,248 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:55:17,248 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 06:55:17,261 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 06:55:17,461 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 06:55:17,461 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:55:17,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:55:17,462 INFO L85 PathProgramCache]: Analyzing trace with hash 971159890, now seen corresponding path program 1 times [2022-01-10 06:55:17,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:55:17,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1211010305] [2022-01-10 06:55:17,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:55:17,463 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:55:17,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:55:17,465 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 06:55:17,467 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 06:55:17,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:55:17,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 06:55:17,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:55:17,769 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 06:55:17,770 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:55:17,770 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:55:17,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1211010305] [2022-01-10 06:55:17,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1211010305] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:55:17,771 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:55:17,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:55:17,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952087558] [2022-01-10 06:55:17,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:55:17,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:55:17,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:55:17,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:55:17,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:55:17,779 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 06:55:17,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:55:17,867 INFO L93 Difference]: Finished difference Result 448 states and 792 transitions. [2022-01-10 06:55:17,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:55:17,868 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 06:55:17,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:55:17,870 INFO L225 Difference]: With dead ends: 448 [2022-01-10 06:55:17,870 INFO L226 Difference]: Without dead ends: 320 [2022-01-10 06:55:17,873 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 06:55:17,874 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 06:55:17,875 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 06:55:17,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2022-01-10 06:55:17,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 320. [2022-01-10 06:55:17,898 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 06:55:17,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 529 transitions. [2022-01-10 06:55:17,899 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 529 transitions. Word has length 77 [2022-01-10 06:55:17,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:55:17,901 INFO L470 AbstractCegarLoop]: Abstraction has 320 states and 529 transitions. [2022-01-10 06:55:17,903 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 06:55:17,904 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 529 transitions. [2022-01-10 06:55:17,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-01-10 06:55:17,908 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:55:17,908 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 06:55:17,921 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 06:55:18,118 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 06:55:18,118 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:55:18,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:55:18,119 INFO L85 PathProgramCache]: Analyzing trace with hash 750751880, now seen corresponding path program 1 times [2022-01-10 06:55:18,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:55:18,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [518281539] [2022-01-10 06:55:18,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:55:18,120 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:55:18,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:55:18,122 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 06:55:18,124 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 06:55:18,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:55:18,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:55:18,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:55:18,531 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 06:55:18,531 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:55:18,531 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:55:18,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [518281539] [2022-01-10 06:55:18,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [518281539] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:55:18,532 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:55:18,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:55:18,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120179582] [2022-01-10 06:55:18,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:55:18,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:55:18,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:55:18,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:55:18,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:55:18,533 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 06:55:18,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:55:18,569 INFO L93 Difference]: Finished difference Result 556 states and 933 transitions. [2022-01-10 06:55:18,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:55:18,569 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 06:55:18,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:55:18,572 INFO L225 Difference]: With dead ends: 556 [2022-01-10 06:55:18,572 INFO L226 Difference]: Without dead ends: 432 [2022-01-10 06:55:18,572 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 06:55:18,573 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 06:55:18,574 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 06:55:18,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2022-01-10 06:55:18,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 430. [2022-01-10 06:55:18,582 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 06:55:18,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 714 transitions. [2022-01-10 06:55:18,584 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 714 transitions. Word has length 122 [2022-01-10 06:55:18,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:55:18,584 INFO L470 AbstractCegarLoop]: Abstraction has 430 states and 714 transitions. [2022-01-10 06:55:18,585 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 06:55:18,585 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 714 transitions. [2022-01-10 06:55:18,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-01-10 06:55:18,586 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:55:18,586 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 06:55:18,595 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 06:55:18,793 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 06:55:18,794 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:55:18,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:55:18,794 INFO L85 PathProgramCache]: Analyzing trace with hash -44233893, now seen corresponding path program 1 times [2022-01-10 06:55:18,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:55:18,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1395969200] [2022-01-10 06:55:18,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:55:18,795 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:55:18,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:55:18,797 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 06:55:18,799 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 06:55:18,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:55:18,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:55:18,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:55:19,183 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 06:55:19,183 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:55:19,184 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:55:19,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1395969200] [2022-01-10 06:55:19,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1395969200] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:55:19,184 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:55:19,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:55:19,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413139564] [2022-01-10 06:55:19,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:55:19,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:55:19,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:55:19,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:55:19,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:55:19,188 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 06:55:19,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:55:19,265 INFO L93 Difference]: Finished difference Result 1262 states and 2093 transitions. [2022-01-10 06:55:19,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:55:19,265 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 06:55:19,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:55:19,270 INFO L225 Difference]: With dead ends: 1262 [2022-01-10 06:55:19,270 INFO L226 Difference]: Without dead ends: 843 [2022-01-10 06:55:19,273 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 06:55:19,278 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 06:55:19,279 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 06:55:19,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2022-01-10 06:55:19,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 841. [2022-01-10 06:55:19,313 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 06:55:19,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 1387 transitions. [2022-01-10 06:55:19,322 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 1387 transitions. Word has length 125 [2022-01-10 06:55:19,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:55:19,323 INFO L470 AbstractCegarLoop]: Abstraction has 841 states and 1387 transitions. [2022-01-10 06:55:19,323 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 06:55:19,323 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 1387 transitions. [2022-01-10 06:55:19,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-10 06:55:19,325 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:55:19,325 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] [2022-01-10 06:55:19,337 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 06:55:19,536 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 06:55:19,536 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:55:19,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:55:19,536 INFO L85 PathProgramCache]: Analyzing trace with hash -451245212, now seen corresponding path program 1 times [2022-01-10 06:55:19,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:55:19,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1480128052] [2022-01-10 06:55:19,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:55:19,537 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:55:19,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:55:19,538 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 06:55:19,539 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 06:55:19,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:55:19,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:55:19,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:55:19,854 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 06:55:19,855 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:55:19,855 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:55:19,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1480128052] [2022-01-10 06:55:19,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1480128052] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:55:19,855 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:55:19,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:55:19,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429772602] [2022-01-10 06:55:19,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:55:19,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:55:19,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:55:19,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:55:19,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:55:19,857 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 06:55:19,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:55:19,889 INFO L93 Difference]: Finished difference Result 1525 states and 2555 transitions. [2022-01-10 06:55:19,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:55:19,890 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 06:55:19,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:55:19,894 INFO L225 Difference]: With dead ends: 1525 [2022-01-10 06:55:19,894 INFO L226 Difference]: Without dead ends: 1067 [2022-01-10 06:55:19,895 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 06:55:19,896 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 06:55:19,896 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 06:55:19,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1067 states. [2022-01-10 06:55:19,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1067 to 1051. [2022-01-10 06:55:19,944 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 06:55:19,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 1741 transitions. [2022-01-10 06:55:19,947 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 1741 transitions. Word has length 126 [2022-01-10 06:55:19,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:55:19,948 INFO L470 AbstractCegarLoop]: Abstraction has 1051 states and 1741 transitions. [2022-01-10 06:55:19,948 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 06:55:19,948 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 1741 transitions. [2022-01-10 06:55:19,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-10 06:55:19,953 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:55:19,953 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 06:55:19,965 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 06:55:20,163 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 06:55:20,164 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:55:20,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:55:20,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1985490274, now seen corresponding path program 1 times [2022-01-10 06:55:20,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:55:20,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [558167620] [2022-01-10 06:55:20,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:55:20,166 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:55:20,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:55:20,168 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 06:55:20,170 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 06:55:20,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:55:20,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:55:20,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:55:20,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:55:20,505 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:55:20,505 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:55:20,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [558167620] [2022-01-10 06:55:20,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [558167620] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:55:20,505 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:55:20,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:55:20,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263655040] [2022-01-10 06:55:20,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:55:20,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:55:20,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:55:20,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:55:20,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:55:20,507 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 06:55:20,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:55:20,538 INFO L93 Difference]: Finished difference Result 1704 states and 2860 transitions. [2022-01-10 06:55:20,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:55:20,539 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 06:55:20,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:55:20,544 INFO L225 Difference]: With dead ends: 1704 [2022-01-10 06:55:20,544 INFO L226 Difference]: Without dead ends: 1252 [2022-01-10 06:55:20,545 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 06:55:20,546 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 06:55:20,546 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 06:55:20,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1252 states. [2022-01-10 06:55:20,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1252 to 1250. [2022-01-10 06:55:20,578 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 06:55:20,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1250 states to 1250 states and 2080 transitions. [2022-01-10 06:55:20,582 INFO L78 Accepts]: Start accepts. Automaton has 1250 states and 2080 transitions. Word has length 126 [2022-01-10 06:55:20,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:55:20,583 INFO L470 AbstractCegarLoop]: Abstraction has 1250 states and 2080 transitions. [2022-01-10 06:55:20,583 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 06:55:20,583 INFO L276 IsEmpty]: Start isEmpty. Operand 1250 states and 2080 transitions. [2022-01-10 06:55:20,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-10 06:55:20,585 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:55:20,585 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:55:20,597 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 06:55:20,797 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 06:55:20,798 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:55:20,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:55:20,798 INFO L85 PathProgramCache]: Analyzing trace with hash 292300585, now seen corresponding path program 1 times [2022-01-10 06:55:20,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:55:20,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [936140636] [2022-01-10 06:55:20,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:55:20,799 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:55:20,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:55:20,801 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 06:55:20,803 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 06:55:20,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:55:20,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:55:20,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:55:21,062 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 06:55:21,062 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:55:21,062 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:55:21,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [936140636] [2022-01-10 06:55:21,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [936140636] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:55:21,063 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:55:21,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:55:21,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271632145] [2022-01-10 06:55:21,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:55:21,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:55:21,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:55:21,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:55:21,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:55:21,064 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 06:55:21,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:55:21,113 INFO L93 Difference]: Finished difference Result 3713 states and 6177 transitions. [2022-01-10 06:55:21,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:55:21,113 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 06:55:21,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:55:21,124 INFO L225 Difference]: With dead ends: 3713 [2022-01-10 06:55:21,124 INFO L226 Difference]: Without dead ends: 2484 [2022-01-10 06:55:21,127 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 06:55:21,128 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 06:55:21,128 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 06:55:21,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2484 states. [2022-01-10 06:55:21,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2484 to 1263. [2022-01-10 06:55:21,178 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 06:55:21,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1263 states to 1263 states and 2099 transitions. [2022-01-10 06:55:21,182 INFO L78 Accepts]: Start accepts. Automaton has 1263 states and 2099 transitions. Word has length 127 [2022-01-10 06:55:21,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:55:21,182 INFO L470 AbstractCegarLoop]: Abstraction has 1263 states and 2099 transitions. [2022-01-10 06:55:21,183 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 06:55:21,183 INFO L276 IsEmpty]: Start isEmpty. Operand 1263 states and 2099 transitions. [2022-01-10 06:55:21,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-10 06:55:21,185 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:55:21,185 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 06:55:21,202 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 06:55:21,400 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 06:55:21,401 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:55:21,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:55:21,401 INFO L85 PathProgramCache]: Analyzing trace with hash 2063465312, now seen corresponding path program 1 times [2022-01-10 06:55:21,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:55:21,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [439767974] [2022-01-10 06:55:21,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:55:21,402 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:55:21,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:55:21,403 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 06:55:21,404 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 06:55:21,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:55:21,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:55:21,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:55:21,788 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 06:55:21,788 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:55:21,788 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:55:21,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [439767974] [2022-01-10 06:55:21,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [439767974] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:55:21,788 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:55:21,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:55:21,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381559706] [2022-01-10 06:55:21,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:55:21,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:55:21,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:55:21,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:55:21,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:55:21,790 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 06:55:21,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:55:21,880 INFO L93 Difference]: Finished difference Result 3698 states and 6148 transitions. [2022-01-10 06:55:21,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:55:21,880 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 06:55:21,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:55:21,889 INFO L225 Difference]: With dead ends: 3698 [2022-01-10 06:55:21,890 INFO L226 Difference]: Without dead ends: 2462 [2022-01-10 06:55:21,892 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 06:55:21,892 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 06:55:21,893 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 06:55:21,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2462 states. [2022-01-10 06:55:21,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2462 to 2460. [2022-01-10 06:55:21,953 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 06:55:21,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2460 states to 2460 states and 4067 transitions. [2022-01-10 06:55:21,960 INFO L78 Accepts]: Start accepts. Automaton has 2460 states and 4067 transitions. Word has length 127 [2022-01-10 06:55:21,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:55:21,960 INFO L470 AbstractCegarLoop]: Abstraction has 2460 states and 4067 transitions. [2022-01-10 06:55:21,960 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 06:55:21,960 INFO L276 IsEmpty]: Start isEmpty. Operand 2460 states and 4067 transitions. [2022-01-10 06:55:21,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-01-10 06:55:21,963 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:55:21,963 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 06:55:21,972 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-01-10 06:55:22,172 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 06:55:22,173 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:55:22,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:55:22,173 INFO L85 PathProgramCache]: Analyzing trace with hash -518499849, now seen corresponding path program 1 times [2022-01-10 06:55:22,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:55:22,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [152719252] [2022-01-10 06:55:22,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:55:22,174 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:55:22,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:55:22,175 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 06:55:22,177 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 06:55:22,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:55:22,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:55:22,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:55:22,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:55:22,435 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:55:22,435 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:55:22,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [152719252] [2022-01-10 06:55:22,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [152719252] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:55:22,436 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:55:22,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:55:22,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401828614] [2022-01-10 06:55:22,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:55:22,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:55:22,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:55:22,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:55:22,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:55:22,437 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 06:55:22,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:55:22,517 INFO L93 Difference]: Finished difference Result 7309 states and 12086 transitions. [2022-01-10 06:55:22,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:55:22,518 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 06:55:22,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:55:22,537 INFO L225 Difference]: With dead ends: 7309 [2022-01-10 06:55:22,538 INFO L226 Difference]: Without dead ends: 4892 [2022-01-10 06:55:22,543 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 06:55:22,545 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 06:55:22,545 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 06:55:22,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4892 states. [2022-01-10 06:55:22,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4892 to 2474. [2022-01-10 06:55:22,670 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 06:55:22,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2474 states to 2474 states and 4083 transitions. [2022-01-10 06:55:22,677 INFO L78 Accepts]: Start accepts. Automaton has 2474 states and 4083 transitions. Word has length 129 [2022-01-10 06:55:22,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:55:22,678 INFO L470 AbstractCegarLoop]: Abstraction has 2474 states and 4083 transitions. [2022-01-10 06:55:22,678 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 06:55:22,678 INFO L276 IsEmpty]: Start isEmpty. Operand 2474 states and 4083 transitions. [2022-01-10 06:55:22,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-01-10 06:55:22,681 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:55:22,681 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 06:55:22,693 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 06:55:22,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:55:22,891 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:55:22,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:55:22,892 INFO L85 PathProgramCache]: Analyzing trace with hash -241338588, now seen corresponding path program 1 times [2022-01-10 06:55:22,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:55:22,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1429308661] [2022-01-10 06:55:22,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:55:22,892 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:55:22,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:55:22,893 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:55:22,896 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 06:55:23,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:55:23,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:55:23,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:55:23,270 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 06:55:23,270 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:55:23,270 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:55:23,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1429308661] [2022-01-10 06:55:23,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1429308661] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:55:23,270 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:55:23,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:55:23,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30605407] [2022-01-10 06:55:23,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:55:23,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:55:23,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:55:23,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:55:23,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:55:23,273 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 06:55:23,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:55:23,403 INFO L93 Difference]: Finished difference Result 7189 states and 11873 transitions. [2022-01-10 06:55:23,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:55:23,404 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 06:55:23,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:55:23,426 INFO L225 Difference]: With dead ends: 7189 [2022-01-10 06:55:23,427 INFO L226 Difference]: Without dead ends: 4756 [2022-01-10 06:55:23,434 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 06:55:23,434 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 06:55:23,434 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 06:55:23,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4756 states. [2022-01-10 06:55:23,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4756 to 4754. [2022-01-10 06:55:23,562 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 06:55:23,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4754 states to 4754 states and 7801 transitions. [2022-01-10 06:55:23,575 INFO L78 Accepts]: Start accepts. Automaton has 4754 states and 7801 transitions. Word has length 130 [2022-01-10 06:55:23,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:55:23,575 INFO L470 AbstractCegarLoop]: Abstraction has 4754 states and 7801 transitions. [2022-01-10 06:55:23,575 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 06:55:23,575 INFO L276 IsEmpty]: Start isEmpty. Operand 4754 states and 7801 transitions. [2022-01-10 06:55:23,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-01-10 06:55:23,580 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:55:23,580 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 06:55:23,595 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 06:55:23,789 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 06:55:23,789 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:55:23,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:55:23,790 INFO L85 PathProgramCache]: Analyzing trace with hash 218786757, now seen corresponding path program 1 times [2022-01-10 06:55:23,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:55:23,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1794748933] [2022-01-10 06:55:23,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:55:23,791 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:55:23,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:55:23,791 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 06:55:23,792 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 06:55:23,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:55:23,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:55:23,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:55:24,071 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 06:55:24,072 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:55:24,072 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:55:24,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1794748933] [2022-01-10 06:55:24,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1794748933] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:55:24,072 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:55:24,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:55:24,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372161512] [2022-01-10 06:55:24,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:55:24,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:55:24,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:55:24,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:55:24,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:55:24,074 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 06:55:24,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:55:24,305 INFO L93 Difference]: Finished difference Result 16945 states and 27686 transitions. [2022-01-10 06:55:24,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:55:24,306 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 06:55:24,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:55:24,344 INFO L225 Difference]: With dead ends: 16945 [2022-01-10 06:55:24,344 INFO L226 Difference]: Without dead ends: 12735 [2022-01-10 06:55:24,351 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 06:55:24,352 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 06:55:24,352 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 06:55:24,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12735 states. [2022-01-10 06:55:24,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12735 to 5215. [2022-01-10 06:55:24,535 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 06:55:24,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5215 states to 5215 states and 8576 transitions. [2022-01-10 06:55:24,549 INFO L78 Accepts]: Start accepts. Automaton has 5215 states and 8576 transitions. Word has length 131 [2022-01-10 06:55:24,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:55:24,550 INFO L470 AbstractCegarLoop]: Abstraction has 5215 states and 8576 transitions. [2022-01-10 06:55:24,550 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 06:55:24,550 INFO L276 IsEmpty]: Start isEmpty. Operand 5215 states and 8576 transitions. [2022-01-10 06:55:24,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-10 06:55:24,556 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:55:24,556 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:55:24,571 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 06:55:24,765 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 06:55:24,765 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:55:24,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:55:24,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1506613695, now seen corresponding path program 1 times [2022-01-10 06:55:24,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:55:24,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1824784413] [2022-01-10 06:55:24,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:55:24,766 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:55:24,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:55:24,767 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 06:55:24,768 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 06:55:24,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:55:24,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:55:24,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:55:25,108 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 06:55:25,109 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:55:25,109 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:55:25,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1824784413] [2022-01-10 06:55:25,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1824784413] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:55:25,109 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:55:25,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:55:25,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058489965] [2022-01-10 06:55:25,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:55:25,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:55:25,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:55:25,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:55:25,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:55:25,111 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 06:55:25,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:55:25,261 INFO L93 Difference]: Finished difference Result 11436 states and 19040 transitions. [2022-01-10 06:55:25,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:55:25,262 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 06:55:25,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:55:25,280 INFO L225 Difference]: With dead ends: 11436 [2022-01-10 06:55:25,280 INFO L226 Difference]: Without dead ends: 8178 [2022-01-10 06:55:25,288 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 06:55:25,288 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 06:55:25,288 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 06:55:25,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8178 states. [2022-01-10 06:55:25,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8178 to 8176. [2022-01-10 06:55:25,489 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 06:55:25,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8176 states to 8176 states and 13520 transitions. [2022-01-10 06:55:25,552 INFO L78 Accepts]: Start accepts. Automaton has 8176 states and 13520 transitions. Word has length 132 [2022-01-10 06:55:25,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:55:25,553 INFO L470 AbstractCegarLoop]: Abstraction has 8176 states and 13520 transitions. [2022-01-10 06:55:25,553 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 06:55:25,553 INFO L276 IsEmpty]: Start isEmpty. Operand 8176 states and 13520 transitions. [2022-01-10 06:55:25,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-01-10 06:55:25,569 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:55:25,569 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] [2022-01-10 06:55:25,583 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 06:55:25,781 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 06:55:25,781 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:55:25,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:55:25,782 INFO L85 PathProgramCache]: Analyzing trace with hash 824686124, now seen corresponding path program 1 times [2022-01-10 06:55:25,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:55:25,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2111912423] [2022-01-10 06:55:25,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:55:25,782 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:55:25,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:55:25,783 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 06:55:25,784 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 06:55:25,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:55:25,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:55:25,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:55:26,131 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 06:55:26,131 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:55:26,131 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:55:26,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2111912423] [2022-01-10 06:55:26,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2111912423] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:55:26,131 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:55:26,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:55:26,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969416325] [2022-01-10 06:55:26,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:55:26,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:55:26,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:55:26,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:55:26,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:55:26,133 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 06:55:26,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:55:26,443 INFO L93 Difference]: Finished difference Result 23840 states and 39430 transitions. [2022-01-10 06:55:26,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:55:26,443 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 06:55:26,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:55:26,475 INFO L225 Difference]: With dead ends: 23840 [2022-01-10 06:55:26,476 INFO L226 Difference]: Without dead ends: 15899 [2022-01-10 06:55:26,487 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 06:55:26,488 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 06:55:26,488 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 06:55:26,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15899 states. [2022-01-10 06:55:26,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15899 to 15897. [2022-01-10 06:55:26,889 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 06:55:26,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15897 states to 15897 states and 26132 transitions. [2022-01-10 06:55:26,925 INFO L78 Accepts]: Start accepts. Automaton has 15897 states and 26132 transitions. Word has length 135 [2022-01-10 06:55:26,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:55:26,925 INFO L470 AbstractCegarLoop]: Abstraction has 15897 states and 26132 transitions. [2022-01-10 06:55:26,925 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 06:55:26,925 INFO L276 IsEmpty]: Start isEmpty. Operand 15897 states and 26132 transitions. [2022-01-10 06:55:26,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-01-10 06:55:26,937 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:55:26,938 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 06:55:26,954 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 06:55:27,147 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 06:55:27,148 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:55:27,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:55:27,148 INFO L85 PathProgramCache]: Analyzing trace with hash 590539035, now seen corresponding path program 1 times [2022-01-10 06:55:27,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:55:27,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [801132585] [2022-01-10 06:55:27,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:55:27,149 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:55:27,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:55:27,151 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 06:55:27,152 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 06:55:27,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:55:27,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:55:27,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:55:27,444 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 06:55:27,445 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:55:27,445 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:55:27,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [801132585] [2022-01-10 06:55:27,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [801132585] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:55:27,445 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:55:27,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:55:27,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692039394] [2022-01-10 06:55:27,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:55:27,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:55:27,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:55:27,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:55:27,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:55:27,446 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 06:55:27,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:55:27,892 INFO L93 Difference]: Finished difference Result 34048 states and 56565 transitions. [2022-01-10 06:55:27,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:55:27,892 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 06:55:27,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:55:27,936 INFO L225 Difference]: With dead ends: 34048 [2022-01-10 06:55:27,936 INFO L226 Difference]: Without dead ends: 21814 [2022-01-10 06:55:27,952 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 06:55:27,952 INFO L933 BasicCegarLoop]: 539 mSDtfsCounter, 190 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:55:27,953 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [190 Valid, 1043 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:55:27,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21814 states. [2022-01-10 06:55:28,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21814 to 21408. [2022-01-10 06:55:28,538 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 06:55:28,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21408 states to 21408 states and 35097 transitions. [2022-01-10 06:55:28,582 INFO L78 Accepts]: Start accepts. Automaton has 21408 states and 35097 transitions. Word has length 136 [2022-01-10 06:55:28,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:55:28,583 INFO L470 AbstractCegarLoop]: Abstraction has 21408 states and 35097 transitions. [2022-01-10 06:55:28,583 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 06:55:28,583 INFO L276 IsEmpty]: Start isEmpty. Operand 21408 states and 35097 transitions. [2022-01-10 06:55:28,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-01-10 06:55:28,595 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:55:28,595 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 06:55:28,607 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-01-10 06:55:28,805 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 06:55:28,805 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:55:28,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:55:28,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1107502927, now seen corresponding path program 1 times [2022-01-10 06:55:28,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:55:28,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [348141536] [2022-01-10 06:55:28,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:55:28,806 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:55:28,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:55:28,808 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 06:55:28,809 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 06:55:28,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:55:28,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:55:28,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:55:29,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:55:29,147 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:55:29,147 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:55:29,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [348141536] [2022-01-10 06:55:29,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [348141536] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:55:29,148 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:55:29,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:55:29,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324367978] [2022-01-10 06:55:29,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:55:29,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:55:29,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:55:29,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:55:29,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:55:29,149 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 06:55:29,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:55:29,906 INFO L93 Difference]: Finished difference Result 60794 states and 99489 transitions. [2022-01-10 06:55:29,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:55:29,906 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 06:55:29,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:55:29,981 INFO L225 Difference]: With dead ends: 60794 [2022-01-10 06:55:29,981 INFO L226 Difference]: Without dead ends: 41213 [2022-01-10 06:55:30,008 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 06:55:30,008 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 06:55:30,009 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 06:55:30,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41213 states. [2022-01-10 06:55:30,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41213 to 41211. [2022-01-10 06:55:31,002 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 06:55:31,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41211 states to 41211 states and 67092 transitions. [2022-01-10 06:55:31,284 INFO L78 Accepts]: Start accepts. Automaton has 41211 states and 67092 transitions. Word has length 137 [2022-01-10 06:55:31,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:55:31,285 INFO L470 AbstractCegarLoop]: Abstraction has 41211 states and 67092 transitions. [2022-01-10 06:55:31,285 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 06:55:31,285 INFO L276 IsEmpty]: Start isEmpty. Operand 41211 states and 67092 transitions. [2022-01-10 06:55:31,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-01-10 06:55:31,311 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:55:31,311 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 06:55:31,326 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 06:55:31,520 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 06:55:31,521 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:55:31,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:55:31,521 INFO L85 PathProgramCache]: Analyzing trace with hash -331419895, now seen corresponding path program 1 times [2022-01-10 06:55:31,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:55:31,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1834168808] [2022-01-10 06:55:31,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:55:31,522 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:55:31,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:55:31,523 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 06:55:31,595 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 06:55:31,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:55:31,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:55:31,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:55:31,870 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 06:55:31,871 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:55:31,871 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:55:31,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1834168808] [2022-01-10 06:55:31,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1834168808] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:55:31,871 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:55:31,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:55:31,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50271435] [2022-01-10 06:55:31,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:55:31,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:55:31,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:55:31,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:55:31,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:55:31,872 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 06:55:32,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:55:32,604 INFO L93 Difference]: Finished difference Result 75085 states and 123180 transitions. [2022-01-10 06:55:32,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:55:32,604 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 06:55:32,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:55:32,724 INFO L225 Difference]: With dead ends: 75085 [2022-01-10 06:55:32,724 INFO L226 Difference]: Without dead ends: 51611 [2022-01-10 06:55:32,756 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 06:55:32,757 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 06:55:32,757 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 06:55:32,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51611 states. [2022-01-10 06:55:33,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51611 to 51609. [2022-01-10 06:55:33,874 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 06:55:34,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51609 states to 51609 states and 84122 transitions. [2022-01-10 06:55:34,002 INFO L78 Accepts]: Start accepts. Automaton has 51609 states and 84122 transitions. Word has length 137 [2022-01-10 06:55:34,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:55:34,002 INFO L470 AbstractCegarLoop]: Abstraction has 51609 states and 84122 transitions. [2022-01-10 06:55:34,002 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 06:55:34,003 INFO L276 IsEmpty]: Start isEmpty. Operand 51609 states and 84122 transitions. [2022-01-10 06:55:34,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-01-10 06:55:34,019 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:55:34,019 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 06:55:34,035 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 06:55:34,229 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 06:55:34,229 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:55:34,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:55:34,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1946294349, now seen corresponding path program 1 times [2022-01-10 06:55:34,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:55:34,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2046407950] [2022-01-10 06:55:34,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:55:34,231 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:55:34,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:55:34,232 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 06:55:34,380 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 06:55:34,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:55:34,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 06:55:34,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:55:35,108 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 06:55:35,108 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:55:35,108 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:55:35,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2046407950] [2022-01-10 06:55:35,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2046407950] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:55:35,108 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:55:35,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:55:35,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852059381] [2022-01-10 06:55:35,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:55:35,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 06:55:35,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:55:35,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 06:55:35,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:55:35,110 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 06:55:36,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:55:36,086 INFO L93 Difference]: Finished difference Result 75525 states and 123275 transitions. [2022-01-10 06:55:36,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:55:36,086 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 06:55:36,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:55:36,191 INFO L225 Difference]: With dead ends: 75525 [2022-01-10 06:55:36,191 INFO L226 Difference]: Without dead ends: 51931 [2022-01-10 06:55:36,224 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 06:55:36,225 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 06:55:36,225 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 06:55:36,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51931 states. [2022-01-10 06:55:37,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51931 to 51657. [2022-01-10 06:55:37,333 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 06:55:37,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51657 states to 51657 states and 84170 transitions. [2022-01-10 06:55:37,659 INFO L78 Accepts]: Start accepts. Automaton has 51657 states and 84170 transitions. Word has length 138 [2022-01-10 06:55:37,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:55:37,661 INFO L470 AbstractCegarLoop]: Abstraction has 51657 states and 84170 transitions. [2022-01-10 06:55:37,661 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 06:55:37,662 INFO L276 IsEmpty]: Start isEmpty. Operand 51657 states and 84170 transitions. [2022-01-10 06:55:37,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-01-10 06:55:37,684 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:55:37,684 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:55:37,694 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 06:55:37,894 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 06:55:37,894 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:55:37,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:55:37,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1805745739, now seen corresponding path program 1 times [2022-01-10 06:55:37,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:55:37,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [397627446] [2022-01-10 06:55:37,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:55:37,896 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:55:37,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:55:37,897 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 06:55:37,899 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 06:55:38,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:55:38,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:55:38,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:55:38,251 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 06:55:38,251 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:55:38,252 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:55:38,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [397627446] [2022-01-10 06:55:38,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [397627446] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:55:38,252 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:55:38,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:55:38,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954323867] [2022-01-10 06:55:38,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:55:38,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:55:38,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:55:38,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:55:38,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:55:38,253 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 06:55:39,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:55:39,211 INFO L93 Difference]: Finished difference Result 106474 states and 173124 transitions. [2022-01-10 06:55:39,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:55:39,212 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 06:55:39,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:55:39,295 INFO L225 Difference]: With dead ends: 106474 [2022-01-10 06:55:39,295 INFO L226 Difference]: Without dead ends: 55098 [2022-01-10 06:55:39,341 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 06:55:39,341 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 06:55:39,341 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 06:55:39,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55098 states. [2022-01-10 06:55:40,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55098 to 52360. [2022-01-10 06:55:40,453 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 06:55:40,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52360 states to 52360 states and 85335 transitions. [2022-01-10 06:55:40,691 INFO L78 Accepts]: Start accepts. Automaton has 52360 states and 85335 transitions. Word has length 138 [2022-01-10 06:55:40,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:55:40,692 INFO L470 AbstractCegarLoop]: Abstraction has 52360 states and 85335 transitions. [2022-01-10 06:55:40,692 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 06:55:40,692 INFO L276 IsEmpty]: Start isEmpty. Operand 52360 states and 85335 transitions. [2022-01-10 06:55:40,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-01-10 06:55:40,705 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:55:40,705 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 06:55:40,712 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 06:55:40,906 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 06:55:40,906 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:55:40,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:55:40,907 INFO L85 PathProgramCache]: Analyzing trace with hash -686099308, now seen corresponding path program 1 times [2022-01-10 06:55:40,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:55:40,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [364446608] [2022-01-10 06:55:40,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:55:40,907 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:55:40,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:55:40,909 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 06:55:40,911 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 06:55:41,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:55:41,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:55:41,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:55:41,191 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 06:55:41,192 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:55:41,192 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:55:41,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [364446608] [2022-01-10 06:55:41,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [364446608] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:55:41,192 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:55:41,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:55:41,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062906773] [2022-01-10 06:55:41,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:55:41,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:55:41,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:55:41,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:55:41,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:55:41,193 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 06:55:43,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:55:43,057 INFO L93 Difference]: Finished difference Result 152234 states and 248047 transitions. [2022-01-10 06:55:43,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:55:43,057 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 06:55:43,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:55:43,253 INFO L225 Difference]: With dead ends: 152234 [2022-01-10 06:55:43,253 INFO L226 Difference]: Without dead ends: 100311 [2022-01-10 06:55:43,292 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 06:55:43,295 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 06:55:43,295 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 06:55:43,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100311 states. [2022-01-10 06:55:45,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100311 to 100309. [2022-01-10 06:55:45,526 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 06:55:45,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100309 states to 100309 states and 162321 transitions. [2022-01-10 06:55:45,755 INFO L78 Accepts]: Start accepts. Automaton has 100309 states and 162321 transitions. Word has length 140 [2022-01-10 06:55:45,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:55:45,755 INFO L470 AbstractCegarLoop]: Abstraction has 100309 states and 162321 transitions. [2022-01-10 06:55:45,755 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 06:55:45,755 INFO L276 IsEmpty]: Start isEmpty. Operand 100309 states and 162321 transitions. [2022-01-10 06:55:45,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-10 06:55:45,777 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:55:45,777 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 06:55:45,784 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 06:55:45,978 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 06:55:45,979 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:55:45,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:55:45,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1399459479, now seen corresponding path program 1 times [2022-01-10 06:55:45,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:55:45,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1822385341] [2022-01-10 06:55:45,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:55:45,980 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:55:45,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:55:45,981 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 06:55:45,981 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 06:55:46,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:55:46,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:55:46,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:55:46,289 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 06:55:46,289 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:55:46,289 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:55:46,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1822385341] [2022-01-10 06:55:46,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1822385341] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:55:46,290 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:55:46,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:55:46,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020863664] [2022-01-10 06:55:46,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:55:46,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:55:46,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:55:46,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:55:46,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:55:46,291 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 06:55:50,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:55:50,528 INFO L93 Difference]: Finished difference Result 357073 states and 576553 transitions. [2022-01-10 06:55:50,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:55:50,529 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 06:55:50,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:55:51,095 INFO L225 Difference]: With dead ends: 357073 [2022-01-10 06:55:51,095 INFO L226 Difference]: Without dead ends: 262551 [2022-01-10 06:55:51,212 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 06:55:51,213 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 06:55:51,214 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 06:55:51,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262551 states. [2022-01-10 06:55:54,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262551 to 103687. [2022-01-10 06:55:54,895 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 06:55:55,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103687 states to 103687 states and 167630 transitions. [2022-01-10 06:55:55,282 INFO L78 Accepts]: Start accepts. Automaton has 103687 states and 167630 transitions. Word has length 142 [2022-01-10 06:55:55,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:55:55,282 INFO L470 AbstractCegarLoop]: Abstraction has 103687 states and 167630 transitions. [2022-01-10 06:55:55,282 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 06:55:55,282 INFO L276 IsEmpty]: Start isEmpty. Operand 103687 states and 167630 transitions. [2022-01-10 06:55:55,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-10 06:55:55,327 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:55:55,327 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 06:55:55,335 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 06:55:55,531 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 06:55:55,531 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:55:55,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:55:55,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1594693764, now seen corresponding path program 1 times [2022-01-10 06:55:55,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:55:55,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1768747925] [2022-01-10 06:55:55,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:55:55,532 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:55:55,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:55:55,533 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 06:55:55,534 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 06:55:55,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:55:55,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:55:55,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:55:55,852 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 06:55:55,852 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:55:55,852 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:55:55,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1768747925] [2022-01-10 06:55:55,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1768747925] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:55:55,853 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:55:55,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:55:55,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616163779] [2022-01-10 06:55:55,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:55:55,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:55:55,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:55:55,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:55:55,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:55:55,854 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 06:56:00,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:56:00,809 INFO L93 Difference]: Finished difference Result 373715 states and 603321 transitions. [2022-01-10 06:56:00,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:56:00,810 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 06:56:00,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:56:01,404 INFO L225 Difference]: With dead ends: 373715 [2022-01-10 06:56:01,404 INFO L226 Difference]: Without dead ends: 280601 [2022-01-10 06:56:01,507 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 06:56:01,507 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 06:56:01,508 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 06:56:01,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280601 states. [2022-01-10 06:56:05,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280601 to 112653. [2022-01-10 06:56:05,894 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 06:56:06,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112653 states to 112653 states and 182066 transitions. [2022-01-10 06:56:06,298 INFO L78 Accepts]: Start accepts. Automaton has 112653 states and 182066 transitions. Word has length 142 [2022-01-10 06:56:06,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:56:06,299 INFO L470 AbstractCegarLoop]: Abstraction has 112653 states and 182066 transitions. [2022-01-10 06:56:06,299 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 06:56:06,299 INFO L276 IsEmpty]: Start isEmpty. Operand 112653 states and 182066 transitions. [2022-01-10 06:56:06,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 06:56:06,353 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:56:06,353 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 06:56:06,363 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-01-10 06:56:06,562 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 06:56:06,563 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:56:06,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:56:06,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1247651626, now seen corresponding path program 1 times [2022-01-10 06:56:06,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:56:06,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1498415072] [2022-01-10 06:56:06,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:56:06,564 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:56:06,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:56:06,565 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 06:56:06,566 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 06:56:06,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:56:06,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:56:06,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:56:06,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:56:06,925 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:56:06,925 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:56:06,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1498415072] [2022-01-10 06:56:06,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1498415072] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:56:06,925 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:56:06,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:56:06,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867806493] [2022-01-10 06:56:06,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:56:06,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:56:06,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:56:06,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:56:06,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:56:06,926 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 06:56:10,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:56:10,857 INFO L93 Difference]: Finished difference Result 275609 states and 448746 transitions. [2022-01-10 06:56:10,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:56:10,859 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 06:56:10,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:56:11,248 INFO L225 Difference]: With dead ends: 275609 [2022-01-10 06:56:11,249 INFO L226 Difference]: Without dead ends: 189791 [2022-01-10 06:56:11,323 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 06:56:11,323 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 06:56:11,324 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 06:56:11,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189791 states.