/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 07:19:47,248 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 07:19:47,249 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 07:19:47,300 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 07:19:47,305 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 07:19:47,306 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 07:19:47,306 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 07:19:47,307 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 07:19:47,307 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 07:19:47,308 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 07:19:47,309 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 07:19:47,324 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 07:19:47,325 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 07:19:47,326 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 07:19:47,327 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 07:19:47,327 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 07:19:47,329 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 07:19:47,334 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 07:19:47,334 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 07:19:47,335 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 07:19:47,336 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-01-10 07:19:47,355 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 07:19:47,356 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 07:19:47,357 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 07:19:47,357 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 07:19:47,358 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 07:19:47,358 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 07:19:47,358 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 07:19:47,358 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 07:19:47,358 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 07:19:47,358 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 07:19:47,359 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 07:19:47,359 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 07:19:47,359 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 07:19:47,359 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 07:19:47,359 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 07:19:47,359 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 07:19:47,359 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 07:19:47,360 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 07:19:47,360 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 07:19:47,360 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 07:19:47,360 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 07:19:47,360 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 07:19:47,360 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 07:19:47,360 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 07:19:47,360 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 07:19:47,360 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 07:19:47,360 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 07:19:47,360 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 07:19:47,361 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 07:19:47,361 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 07:19:47,361 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 07:19:47,361 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 07:19:47,361 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 07:19:47,361 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 07:19:47,512 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 07:19:47,537 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 07:19:47,538 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 07:19:47,539 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 07:19:47,540 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 07:19:47,540 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-01-10 07:19:47,597 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/935b55854/68c10ec2a82d4f22aa1b5ba8e3762165/FLAG805b88319 [2022-01-10 07:19:48,032 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 07:19:48,033 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-01-10 07:19:48,049 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/935b55854/68c10ec2a82d4f22aa1b5ba8e3762165/FLAG805b88319 [2022-01-10 07:19:48,058 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/935b55854/68c10ec2a82d4f22aa1b5ba8e3762165 [2022-01-10 07:19:48,059 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 07:19:48,060 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 07:19:48,061 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 07:19:48,061 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 07:19:48,074 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 07:19:48,074 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:19:48" (1/1) ... [2022-01-10 07:19:48,075 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e853c51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:19:48, skipping insertion in model container [2022-01-10 07:19:48,076 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:19:48" (1/1) ... [2022-01-10 07:19:48,080 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 07:19:48,117 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 07:19:48,395 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[10378,10391] [2022-01-10 07:19:48,433 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 07:19:48,442 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 07:19:48,496 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[10378,10391] [2022-01-10 07:19:48,517 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 07:19:48,531 INFO L208 MainTranslator]: Completed translation [2022-01-10 07:19:48,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:19:48 WrapperNode [2022-01-10 07:19:48,531 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 07:19:48,532 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 07:19:48,532 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 07:19:48,532 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 07:19:48,537 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:19:48" (1/1) ... [2022-01-10 07:19:48,547 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:19:48" (1/1) ... [2022-01-10 07:19:48,587 INFO L137 Inliner]: procedures = 27, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 809 [2022-01-10 07:19:48,587 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 07:19:48,588 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 07:19:48,588 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 07:19:48,588 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 07:19:48,593 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:19:48" (1/1) ... [2022-01-10 07:19:48,593 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:19:48" (1/1) ... [2022-01-10 07:19:48,597 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:19:48" (1/1) ... [2022-01-10 07:19:48,597 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:19:48" (1/1) ... [2022-01-10 07:19:48,625 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:19:48" (1/1) ... [2022-01-10 07:19:48,630 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:19:48" (1/1) ... [2022-01-10 07:19:48,637 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:19:48" (1/1) ... [2022-01-10 07:19:48,640 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 07:19:48,640 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 07:19:48,640 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 07:19:48,640 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 07:19:48,656 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:19:48" (1/1) ... [2022-01-10 07:19:48,671 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 07:19:48,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 07:19:48,724 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 07:19:48,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 07:19:48,754 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 07:19:48,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 07:19:48,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 07:19:48,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 07:19:48,837 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 07:19:48,838 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 07:19:49,440 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 07:19:49,446 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 07:19:49,446 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 07:19:49,447 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:19:49 BoogieIcfgContainer [2022-01-10 07:19:49,448 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 07:19:49,448 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 07:19:49,448 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 07:19:49,452 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 07:19:49,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 07:19:48" (1/3) ... [2022-01-10 07:19:49,453 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@731bbba4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:19:49, skipping insertion in model container [2022-01-10 07:19:49,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:19:48" (2/3) ... [2022-01-10 07:19:49,453 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@731bbba4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:19:49, skipping insertion in model container [2022-01-10 07:19:49,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:19:49" (3/3) ... [2022-01-10 07:19:49,456 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-01-10 07:19:49,460 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 07:19:49,460 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 07:19:49,489 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 07:19:49,493 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 07:19:49,493 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 07:19:49,504 INFO L276 IsEmpty]: Start isEmpty. Operand has 201 states, 199 states have (on average 1.763819095477387) internal successors, (351), 200 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:19:49,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-01-10 07:19:49,511 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:19:49,511 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] [2022-01-10 07:19:49,512 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:19:49,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:19:49,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1361095482, now seen corresponding path program 1 times [2022-01-10 07:19:49,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:19:49,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [693447352] [2022-01-10 07:19:49,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:19:49,524 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:19:49,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:19:49,526 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:19:49,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-01-10 07:19:49,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:19:49,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:19:49,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:19:50,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:19:50,493 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:19:50,493 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:19:50,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [693447352] [2022-01-10 07:19:50,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [693447352] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:19:50,494 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:19:50,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:19:50,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485734190] [2022-01-10 07:19:50,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:19:50,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:19:50,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:19:50,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:19:50,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:19:50,517 INFO L87 Difference]: Start difference. First operand has 201 states, 199 states have (on average 1.763819095477387) internal successors, (351), 200 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 21.4) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:19:50,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:19:50,732 INFO L93 Difference]: Finished difference Result 358 states and 600 transitions. [2022-01-10 07:19:50,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:19:50,734 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 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 107 [2022-01-10 07:19:50,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:19:50,741 INFO L225 Difference]: With dead ends: 358 [2022-01-10 07:19:50,741 INFO L226 Difference]: Without dead ends: 198 [2022-01-10 07:19:50,744 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:19:50,746 INFO L933 BasicCegarLoop]: 347 mSDtfsCounter, 128 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 764 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 135 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:19:50,746 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 764 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 240 Invalid, 0 Unknown, 135 Unchecked, 0.2s Time] [2022-01-10 07:19:50,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2022-01-10 07:19:50,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2022-01-10 07:19:50,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 197 states have (on average 1.3705583756345177) internal successors, (270), 197 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:19:50,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 270 transitions. [2022-01-10 07:19:50,774 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 270 transitions. Word has length 107 [2022-01-10 07:19:50,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:19:50,774 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 270 transitions. [2022-01-10 07:19:50,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:19:50,775 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 270 transitions. [2022-01-10 07:19:50,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-01-10 07:19:50,776 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:19:50,776 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] [2022-01-10 07:19:50,786 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-01-10 07:19:50,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:19:50,984 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:19:50,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:19:50,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1047442234, now seen corresponding path program 1 times [2022-01-10 07:19:50,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:19:50,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1859015145] [2022-01-10 07:19:50,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:19:50,986 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:19:50,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:19:50,987 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:19:51,022 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-01-10 07:19:51,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:19:51,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:19:51,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:19:51,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:19:51,642 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:19:51,642 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:19:51,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1859015145] [2022-01-10 07:19:51,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1859015145] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:19:51,643 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:19:51,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:19:51,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829153172] [2022-01-10 07:19:51,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:19:51,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:19:51,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:19:51,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:19:51,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:19:51,647 INFO L87 Difference]: Start difference. First operand 198 states and 270 transitions. Second operand has 5 states, 5 states have (on average 21.6) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:19:51,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:19:51,757 INFO L93 Difference]: Finished difference Result 336 states and 479 transitions. [2022-01-10 07:19:51,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:19:51,758 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2022-01-10 07:19:51,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:19:51,759 INFO L225 Difference]: With dead ends: 336 [2022-01-10 07:19:51,759 INFO L226 Difference]: Without dead ends: 198 [2022-01-10 07:19:51,760 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:19:51,760 INFO L933 BasicCegarLoop]: 262 mSDtfsCounter, 68 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 13 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:19:51,761 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 398 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 105 Invalid, 0 Unknown, 13 Unchecked, 0.1s Time] [2022-01-10 07:19:51,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2022-01-10 07:19:51,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2022-01-10 07:19:51,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 197 states have (on average 1.365482233502538) internal successors, (269), 197 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:19:51,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 269 transitions. [2022-01-10 07:19:51,768 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 269 transitions. Word has length 108 [2022-01-10 07:19:51,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:19:51,768 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 269 transitions. [2022-01-10 07:19:51,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:19:51,768 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 269 transitions. [2022-01-10 07:19:51,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-01-10 07:19:51,769 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:19:51,769 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] [2022-01-10 07:19:51,777 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-01-10 07:19:51,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:19:51,979 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:19:51,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:19:51,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1723426618, now seen corresponding path program 1 times [2022-01-10 07:19:51,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:19:51,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2099880090] [2022-01-10 07:19:51,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:19:51,981 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:19:51,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:19:51,982 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:19:52,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-01-10 07:19:52,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:19:52,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:19:52,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:19:52,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:19:52,625 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:19:52,625 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:19:52,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2099880090] [2022-01-10 07:19:52,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2099880090] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:19:52,626 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:19:52,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:19:52,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227715100] [2022-01-10 07:19:52,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:19:52,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:19:52,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:19:52,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:19:52,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:19:52,630 INFO L87 Difference]: Start difference. First operand 198 states and 269 transitions. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:19:52,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:19:52,768 INFO L93 Difference]: Finished difference Result 332 states and 473 transitions. [2022-01-10 07:19:52,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:19:52,768 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2022-01-10 07:19:52,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:19:52,770 INFO L225 Difference]: With dead ends: 332 [2022-01-10 07:19:52,770 INFO L226 Difference]: Without dead ends: 198 [2022-01-10 07:19:52,772 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:19:52,774 INFO L933 BasicCegarLoop]: 258 mSDtfsCounter, 38 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 603 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 117 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:19:52,774 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 603 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 208 Invalid, 0 Unknown, 117 Unchecked, 0.1s Time] [2022-01-10 07:19:52,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2022-01-10 07:19:52,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2022-01-10 07:19:52,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 197 states have (on average 1.3604060913705585) internal successors, (268), 197 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:19:52,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 268 transitions. [2022-01-10 07:19:52,805 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 268 transitions. Word has length 109 [2022-01-10 07:19:52,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:19:52,805 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 268 transitions. [2022-01-10 07:19:52,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:19:52,806 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 268 transitions. [2022-01-10 07:19:52,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-10 07:19:52,807 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:19:52,807 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:19:52,816 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-01-10 07:19:53,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:19:53,015 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:19:53,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:19:53,015 INFO L85 PathProgramCache]: Analyzing trace with hash 550228782, now seen corresponding path program 1 times [2022-01-10 07:19:53,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:19:53,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2109153457] [2022-01-10 07:19:53,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:19:53,016 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:19:53,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:19:53,032 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:19:53,034 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-01-10 07:19:53,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:19:53,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:19:53,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:19:53,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:19:53,541 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:19:53,541 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:19:53,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2109153457] [2022-01-10 07:19:53,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2109153457] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:19:53,542 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:19:53,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:19:53,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978860954] [2022-01-10 07:19:53,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:19:53,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:19:53,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:19:53,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:19:53,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:19:53,544 INFO L87 Difference]: Start difference. First operand 198 states and 268 transitions. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:19:53,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:19:53,644 INFO L93 Difference]: Finished difference Result 328 states and 467 transitions. [2022-01-10 07:19:53,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:19:53,645 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2022-01-10 07:19:53,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:19:53,647 INFO L225 Difference]: With dead ends: 328 [2022-01-10 07:19:53,647 INFO L226 Difference]: Without dead ends: 198 [2022-01-10 07:19:53,649 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:19:53,652 INFO L933 BasicCegarLoop]: 254 mSDtfsCounter, 40 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 602 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 116 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:19:53,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 602 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 105 Invalid, 0 Unknown, 116 Unchecked, 0.1s Time] [2022-01-10 07:19:53,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2022-01-10 07:19:53,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2022-01-10 07:19:53,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 197 states have (on average 1.3553299492385786) internal successors, (267), 197 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:19:53,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 267 transitions. [2022-01-10 07:19:53,666 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 267 transitions. Word has length 110 [2022-01-10 07:19:53,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:19:53,666 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 267 transitions. [2022-01-10 07:19:53,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:19:53,666 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 267 transitions. [2022-01-10 07:19:53,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-01-10 07:19:53,670 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:19:53,670 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] [2022-01-10 07:19:53,695 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-01-10 07:19:53,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:19:53,878 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:19:53,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:19:53,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1841075374, now seen corresponding path program 1 times [2022-01-10 07:19:53,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:19:53,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [991164610] [2022-01-10 07:19:53,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:19:53,880 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:19:53,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:19:53,892 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:19:53,894 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-01-10 07:19:54,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:19:54,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:19:54,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:19:54,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:19:54,439 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:19:54,439 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:19:54,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [991164610] [2022-01-10 07:19:54,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [991164610] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:19:54,439 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:19:54,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:19:54,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146799754] [2022-01-10 07:19:54,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:19:54,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:19:54,440 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:19:54,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:19:54,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:19:54,440 INFO L87 Difference]: Start difference. First operand 198 states and 267 transitions. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:19:54,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:19:54,527 INFO L93 Difference]: Finished difference Result 324 states and 461 transitions. [2022-01-10 07:19:54,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:19:54,528 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2022-01-10 07:19:54,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:19:54,529 INFO L225 Difference]: With dead ends: 324 [2022-01-10 07:19:54,529 INFO L226 Difference]: Without dead ends: 198 [2022-01-10 07:19:54,529 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:19:54,529 INFO L933 BasicCegarLoop]: 250 mSDtfsCounter, 50 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 22 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:19:54,530 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 407 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 93 Invalid, 0 Unknown, 22 Unchecked, 0.1s Time] [2022-01-10 07:19:54,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2022-01-10 07:19:54,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2022-01-10 07:19:54,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 197 states have (on average 1.350253807106599) internal successors, (266), 197 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:19:54,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 266 transitions. [2022-01-10 07:19:54,533 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 266 transitions. Word has length 111 [2022-01-10 07:19:54,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:19:54,533 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 266 transitions. [2022-01-10 07:19:54,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:19:54,533 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 266 transitions. [2022-01-10 07:19:54,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-10 07:19:54,534 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:19:54,534 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] [2022-01-10 07:19:54,559 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-01-10 07:19:54,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:19:54,742 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:19:54,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:19:54,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1842089506, now seen corresponding path program 1 times [2022-01-10 07:19:54,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:19:54,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1917198782] [2022-01-10 07:19:54,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:19:54,743 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:19:54,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:19:54,760 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:19:54,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-01-10 07:19:54,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:19:54,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:19:54,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:19:55,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:19:55,309 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:19:55,310 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:19:55,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1917198782] [2022-01-10 07:19:55,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1917198782] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:19:55,310 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:19:55,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:19:55,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608739587] [2022-01-10 07:19:55,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:19:55,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:19:55,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:19:55,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:19:55,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:19:55,311 INFO L87 Difference]: Start difference. First operand 198 states and 266 transitions. Second operand has 5 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:19:55,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:19:55,425 INFO L93 Difference]: Finished difference Result 320 states and 455 transitions. [2022-01-10 07:19:55,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:19:55,426 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 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 112 [2022-01-10 07:19:55,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:19:55,426 INFO L225 Difference]: With dead ends: 320 [2022-01-10 07:19:55,426 INFO L226 Difference]: Without dead ends: 198 [2022-01-10 07:19:55,427 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:19:55,427 INFO L933 BasicCegarLoop]: 246 mSDtfsCounter, 29 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 114 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:19:55,427 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 604 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 97 Invalid, 0 Unknown, 114 Unchecked, 0.1s Time] [2022-01-10 07:19:55,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2022-01-10 07:19:55,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2022-01-10 07:19:55,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 197 states have (on average 1.3451776649746192) internal successors, (265), 197 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:19:55,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 265 transitions. [2022-01-10 07:19:55,431 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 265 transitions. Word has length 112 [2022-01-10 07:19:55,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:19:55,431 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 265 transitions. [2022-01-10 07:19:55,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:19:55,431 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 265 transitions. [2022-01-10 07:19:55,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-01-10 07:19:55,432 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:19:55,432 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:19:55,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-01-10 07:19:55,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:19:55,663 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:19:55,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:19:55,664 INFO L85 PathProgramCache]: Analyzing trace with hash 922428126, now seen corresponding path program 1 times [2022-01-10 07:19:55,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:19:55,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [103121997] [2022-01-10 07:19:55,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:19:55,664 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:19:55,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:19:55,666 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:19:55,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-01-10 07:19:55,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:19:55,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:19:55,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:19:56,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:19:56,163 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:19:56,163 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:19:56,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [103121997] [2022-01-10 07:19:56,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [103121997] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:19:56,164 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:19:56,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:19:56,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306965769] [2022-01-10 07:19:56,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:19:56,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:19:56,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:19:56,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:19:56,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:19:56,165 INFO L87 Difference]: Start difference. First operand 198 states and 265 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:19:56,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:19:56,289 INFO L93 Difference]: Finished difference Result 316 states and 449 transitions. [2022-01-10 07:19:56,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:19:56,289 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2022-01-10 07:19:56,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:19:56,290 INFO L225 Difference]: With dead ends: 316 [2022-01-10 07:19:56,290 INFO L226 Difference]: Without dead ends: 198 [2022-01-10 07:19:56,290 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:19:56,291 INFO L933 BasicCegarLoop]: 242 mSDtfsCounter, 26 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 112 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:19:56,291 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 612 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 172 Invalid, 0 Unknown, 112 Unchecked, 0.1s Time] [2022-01-10 07:19:56,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2022-01-10 07:19:56,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2022-01-10 07:19:56,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 197 states have (on average 1.3401015228426396) internal successors, (264), 197 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:19:56,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 264 transitions. [2022-01-10 07:19:56,294 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 264 transitions. Word has length 113 [2022-01-10 07:19:56,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:19:56,294 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 264 transitions. [2022-01-10 07:19:56,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:19:56,295 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 264 transitions. [2022-01-10 07:19:56,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-01-10 07:19:56,295 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:19:56,295 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] [2022-01-10 07:19:56,316 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-01-10 07:19:56,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:19:56,503 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:19:56,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:19:56,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1369742314, now seen corresponding path program 1 times [2022-01-10 07:19:56,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:19:56,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [901012220] [2022-01-10 07:19:56,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:19:56,504 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:19:56,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:19:56,505 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:19:56,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-01-10 07:19:56,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:19:56,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 07:19:56,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:19:57,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:19:57,408 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:19:57,408 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:19:57,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [901012220] [2022-01-10 07:19:57,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [901012220] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:19:57,408 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:19:57,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 07:19:57,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020323450] [2022-01-10 07:19:57,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:19:57,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 07:19:57,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:19:57,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 07:19:57,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-10 07:19:57,409 INFO L87 Difference]: Start difference. First operand 198 states and 264 transitions. Second operand has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:19:57,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:19:57,497 INFO L93 Difference]: Finished difference Result 305 states and 434 transitions. [2022-01-10 07:19:57,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 07:19:57,497 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 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 114 [2022-01-10 07:19:57,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:19:57,498 INFO L225 Difference]: With dead ends: 305 [2022-01-10 07:19:57,498 INFO L226 Difference]: Without dead ends: 198 [2022-01-10 07:19:57,499 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-01-10 07:19:57,499 INFO L933 BasicCegarLoop]: 236 mSDtfsCounter, 31 mSDsluCounter, 725 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 961 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 278 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:19:57,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 961 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 160 Invalid, 0 Unknown, 278 Unchecked, 0.1s Time] [2022-01-10 07:19:57,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2022-01-10 07:19:57,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2022-01-10 07:19:57,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 197 states have (on average 1.3350253807106598) internal successors, (263), 197 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:19:57,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 263 transitions. [2022-01-10 07:19:57,503 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 263 transitions. Word has length 114 [2022-01-10 07:19:57,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:19:57,503 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 263 transitions. [2022-01-10 07:19:57,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:19:57,503 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 263 transitions. [2022-01-10 07:19:57,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-01-10 07:19:57,504 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:19:57,504 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:19:57,515 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-01-10 07:19:57,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:19:57,713 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:19:57,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:19:57,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1351791380, now seen corresponding path program 1 times [2022-01-10 07:19:57,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:19:57,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1224182089] [2022-01-10 07:19:57,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:19:57,714 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:19:57,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:19:57,728 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:19:57,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-01-10 07:19:57,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:19:57,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:19:57,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:19:58,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:19:58,801 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:19:58,802 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:19:58,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1224182089] [2022-01-10 07:19:58,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1224182089] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:19:58,802 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:19:58,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 07:19:58,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893701153] [2022-01-10 07:19:58,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:19:58,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 07:19:58,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:19:58,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 07:19:58,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-01-10 07:19:58,803 INFO L87 Difference]: Start difference. First operand 198 states and 263 transitions. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:19:58,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:19:58,814 INFO L93 Difference]: Finished difference Result 300 states and 425 transitions. [2022-01-10 07:19:58,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 07:19:58,814 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2022-01-10 07:19:58,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:19:58,815 INFO L225 Difference]: With dead ends: 300 [2022-01-10 07:19:58,815 INFO L226 Difference]: Without dead ends: 198 [2022-01-10 07:19:58,816 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-01-10 07:19:58,816 INFO L933 BasicCegarLoop]: 233 mSDtfsCounter, 64 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 734 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 123 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:19:58,816 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 734 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2 Invalid, 0 Unknown, 123 Unchecked, 0.0s Time] [2022-01-10 07:19:58,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2022-01-10 07:19:58,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2022-01-10 07:19:58,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 197 states have (on average 1.3299492385786802) internal successors, (262), 197 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:19:58,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 262 transitions. [2022-01-10 07:19:58,820 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 262 transitions. Word has length 115 [2022-01-10 07:19:58,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:19:58,820 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 262 transitions. [2022-01-10 07:19:58,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:19:58,820 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 262 transitions. [2022-01-10 07:19:58,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-01-10 07:19:58,820 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:19:58,821 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] [2022-01-10 07:19:58,828 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-01-10 07:19:59,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:19:59,021 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:19:59,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:19:59,022 INFO L85 PathProgramCache]: Analyzing trace with hash 133287821, now seen corresponding path program 1 times [2022-01-10 07:19:59,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:19:59,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1925309973] [2022-01-10 07:19:59,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:19:59,022 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:19:59,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:19:59,023 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:19:59,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-01-10 07:19:59,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:19:59,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:19:59,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:20:00,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:20:00,137 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:20:00,138 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:20:00,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1925309973] [2022-01-10 07:20:00,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1925309973] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:20:00,138 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:20:00,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 07:20:00,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221751648] [2022-01-10 07:20:00,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:20:00,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 07:20:00,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:20:00,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 07:20:00,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-01-10 07:20:00,139 INFO L87 Difference]: Start difference. First operand 198 states and 262 transitions. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:20:00,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:20:00,219 INFO L93 Difference]: Finished difference Result 295 states and 416 transitions. [2022-01-10 07:20:00,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 07:20:00,219 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2022-01-10 07:20:00,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:20:00,220 INFO L225 Difference]: With dead ends: 295 [2022-01-10 07:20:00,220 INFO L226 Difference]: Without dead ends: 198 [2022-01-10 07:20:00,220 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-01-10 07:20:00,220 INFO L933 BasicCegarLoop]: 228 mSDtfsCounter, 58 mSDsluCounter, 833 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 1061 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 336 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:20:00,221 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 1061 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 75 Invalid, 0 Unknown, 336 Unchecked, 0.1s Time] [2022-01-10 07:20:00,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2022-01-10 07:20:00,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2022-01-10 07:20:00,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 197 states have (on average 1.3248730964467006) internal successors, (261), 197 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:20:00,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 261 transitions. [2022-01-10 07:20:00,224 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 261 transitions. Word has length 116 [2022-01-10 07:20:00,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:20:00,224 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 261 transitions. [2022-01-10 07:20:00,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:20:00,225 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 261 transitions. [2022-01-10 07:20:00,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-01-10 07:20:00,225 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:20:00,225 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:20:00,249 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 07:20:00,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:20:00,426 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:20:00,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:20:00,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1647839413, now seen corresponding path program 1 times [2022-01-10 07:20:00,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:20:00,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1995940382] [2022-01-10 07:20:00,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:20:00,427 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:20:00,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:20:00,428 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:20:00,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-01-10 07:20:00,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:20:00,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:20:00,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:20:01,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:20:01,477 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:20:01,478 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:20:01,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1995940382] [2022-01-10 07:20:01,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1995940382] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:20:01,478 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:20:01,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 07:20:01,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451323039] [2022-01-10 07:20:01,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:20:01,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 07:20:01,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:20:01,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 07:20:01,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-01-10 07:20:01,479 INFO L87 Difference]: Start difference. First operand 198 states and 261 transitions. Second operand has 9 states, 9 states have (on average 13.0) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:20:01,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:20:01,573 INFO L93 Difference]: Finished difference Result 290 states and 407 transitions. [2022-01-10 07:20:01,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 07:20:01,573 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.0) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2022-01-10 07:20:01,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:20:01,574 INFO L225 Difference]: With dead ends: 290 [2022-01-10 07:20:01,574 INFO L226 Difference]: Without dead ends: 198 [2022-01-10 07:20:01,574 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-01-10 07:20:01,575 INFO L933 BasicCegarLoop]: 224 mSDtfsCounter, 64 mSDsluCounter, 677 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 901 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 189 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:20:01,575 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 901 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 136 Invalid, 0 Unknown, 189 Unchecked, 0.1s Time] [2022-01-10 07:20:01,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2022-01-10 07:20:01,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2022-01-10 07:20:01,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 197 states have (on average 1.3197969543147208) internal successors, (260), 197 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:20:01,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 260 transitions. [2022-01-10 07:20:01,587 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 260 transitions. Word has length 117 [2022-01-10 07:20:01,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:20:01,587 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 260 transitions. [2022-01-10 07:20:01,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.0) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:20:01,588 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 260 transitions. [2022-01-10 07:20:01,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-01-10 07:20:01,588 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:20:01,588 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:20:01,598 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-01-10 07:20:01,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:20:01,796 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:20:01,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:20:01,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1234620548, now seen corresponding path program 1 times [2022-01-10 07:20:01,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:20:01,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1603716024] [2022-01-10 07:20:01,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:20:01,797 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:20:01,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:20:01,798 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:20:01,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-01-10 07:20:01,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:20:01,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:20:01,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:20:03,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:20:03,069 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:20:03,069 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:20:03,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1603716024] [2022-01-10 07:20:03,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1603716024] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:20:03,069 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:20:03,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 07:20:03,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336890198] [2022-01-10 07:20:03,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:20:03,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 07:20:03,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:20:03,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 07:20:03,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-01-10 07:20:03,070 INFO L87 Difference]: Start difference. First operand 198 states and 260 transitions. Second operand has 9 states, 9 states have (on average 13.11111111111111) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:20:03,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:20:03,121 INFO L93 Difference]: Finished difference Result 285 states and 398 transitions. [2022-01-10 07:20:03,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 07:20:03,121 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.11111111111111) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2022-01-10 07:20:03,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:20:03,122 INFO L225 Difference]: With dead ends: 285 [2022-01-10 07:20:03,122 INFO L226 Difference]: Without dead ends: 198 [2022-01-10 07:20:03,123 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-01-10 07:20:03,123 INFO L933 BasicCegarLoop]: 220 mSDtfsCounter, 92 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 670 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 61 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:20:03,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 670 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 61 Unchecked, 0.0s Time] [2022-01-10 07:20:03,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2022-01-10 07:20:03,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2022-01-10 07:20:03,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 197 states have (on average 1.3147208121827412) internal successors, (259), 197 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:20:03,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 259 transitions. [2022-01-10 07:20:03,127 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 259 transitions. Word has length 118 [2022-01-10 07:20:03,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:20:03,127 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 259 transitions. [2022-01-10 07:20:03,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.11111111111111) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:20:03,127 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 259 transitions. [2022-01-10 07:20:03,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-01-10 07:20:03,128 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:20:03,128 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:20:03,138 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-01-10 07:20:03,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:20:03,336 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:20:03,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:20:03,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1333500162, now seen corresponding path program 1 times [2022-01-10 07:20:03,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:20:03,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [581983691] [2022-01-10 07:20:03,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:20:03,337 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:20:03,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:20:03,338 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:20:03,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-01-10 07:20:03,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:20:03,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:20:03,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:20:04,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:20:04,142 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:20:04,142 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:20:04,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [581983691] [2022-01-10 07:20:04,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [581983691] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:20:04,143 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:20:04,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 07:20:04,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878214286] [2022-01-10 07:20:04,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:20:04,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 07:20:04,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:20:04,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 07:20:04,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-01-10 07:20:04,144 INFO L87 Difference]: Start difference. First operand 198 states and 259 transitions. Second operand has 9 states, 9 states have (on average 13.222222222222221) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:20:04,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:20:04,207 INFO L93 Difference]: Finished difference Result 280 states and 389 transitions. [2022-01-10 07:20:04,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 07:20:04,207 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.222222222222221) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 119 [2022-01-10 07:20:04,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:20:04,208 INFO L225 Difference]: With dead ends: 280 [2022-01-10 07:20:04,208 INFO L226 Difference]: Without dead ends: 198 [2022-01-10 07:20:04,208 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-01-10 07:20:04,208 INFO L933 BasicCegarLoop]: 216 mSDtfsCounter, 58 mSDsluCounter, 848 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 1064 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 297 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:20:04,209 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 1064 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 120 Invalid, 0 Unknown, 297 Unchecked, 0.0s Time] [2022-01-10 07:20:04,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2022-01-10 07:20:04,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2022-01-10 07:20:04,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 197 states have (on average 1.3096446700507614) internal successors, (258), 197 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:20:04,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 258 transitions. [2022-01-10 07:20:04,212 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 258 transitions. Word has length 119 [2022-01-10 07:20:04,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:20:04,213 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 258 transitions. [2022-01-10 07:20:04,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.222222222222221) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:20:04,213 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 258 transitions. [2022-01-10 07:20:04,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-01-10 07:20:04,213 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:20:04,213 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:20:04,235 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-01-10 07:20:04,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:20:04,421 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:20:04,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:20:04,421 INFO L85 PathProgramCache]: Analyzing trace with hash -931793157, now seen corresponding path program 1 times [2022-01-10 07:20:04,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:20:04,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [21081055] [2022-01-10 07:20:04,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:20:04,422 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:20:04,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:20:04,423 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:20:04,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-01-10 07:20:04,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:20:04,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:20:04,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:20:05,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:20:05,328 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:20:05,329 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:20:05,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [21081055] [2022-01-10 07:20:05,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [21081055] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:20:05,329 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:20:05,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 07:20:05,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283002878] [2022-01-10 07:20:05,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:20:05,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 07:20:05,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:20:05,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 07:20:05,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-01-10 07:20:05,330 INFO L87 Difference]: Start difference. First operand 198 states and 258 transitions. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 8 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:20:05,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:20:05,417 INFO L93 Difference]: Finished difference Result 283 states and 394 transitions. [2022-01-10 07:20:05,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 07:20:05,418 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 8 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2022-01-10 07:20:05,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:20:05,419 INFO L225 Difference]: With dead ends: 283 [2022-01-10 07:20:05,419 INFO L226 Difference]: Without dead ends: 202 [2022-01-10 07:20:05,419 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-01-10 07:20:05,419 INFO L933 BasicCegarLoop]: 211 mSDtfsCounter, 85 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 783 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 69 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:20:05,419 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 783 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 110 Invalid, 0 Unknown, 69 Unchecked, 0.1s Time] [2022-01-10 07:20:05,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2022-01-10 07:20:05,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 201. [2022-01-10 07:20:05,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 200 states have (on average 1.31) internal successors, (262), 200 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:20:05,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 262 transitions. [2022-01-10 07:20:05,424 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 262 transitions. Word has length 120 [2022-01-10 07:20:05,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:20:05,424 INFO L470 AbstractCegarLoop]: Abstraction has 201 states and 262 transitions. [2022-01-10 07:20:05,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 8 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:20:05,425 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 262 transitions. [2022-01-10 07:20:05,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-01-10 07:20:05,425 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:20:05,425 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] [2022-01-10 07:20:05,433 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2022-01-10 07:20:05,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:20:05,633 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:20:05,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:20:05,633 INFO L85 PathProgramCache]: Analyzing trace with hash 621404993, now seen corresponding path program 1 times [2022-01-10 07:20:05,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:20:05,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [9803182] [2022-01-10 07:20:05,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:20:05,634 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:20:05,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:20:05,637 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:20:05,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-01-10 07:20:05,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:20:05,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:20:05,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:20:07,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:20:07,615 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:20:07,615 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:20:07,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [9803182] [2022-01-10 07:20:07,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [9803182] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:20:07,616 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:20:07,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 07:20:07,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855942296] [2022-01-10 07:20:07,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:20:07,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 07:20:07,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:20:07,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 07:20:07,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-01-10 07:20:07,618 INFO L87 Difference]: Start difference. First operand 201 states and 262 transitions. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:20:08,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:20:08,066 INFO L93 Difference]: Finished difference Result 948 states and 1429 transitions. [2022-01-10 07:20:08,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 07:20:08,066 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 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 121 [2022-01-10 07:20:08,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:20:08,069 INFO L225 Difference]: With dead ends: 948 [2022-01-10 07:20:08,069 INFO L226 Difference]: Without dead ends: 867 [2022-01-10 07:20:08,070 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-01-10 07:20:08,071 INFO L933 BasicCegarLoop]: 662 mSDtfsCounter, 1310 mSDsluCounter, 1269 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1310 SdHoareTripleChecker+Valid, 1931 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 07:20:08,071 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1310 Valid, 1931 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 07:20:08,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 867 states. [2022-01-10 07:20:08,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 867 to 388. [2022-01-10 07:20:08,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 1.434108527131783) internal successors, (555), 387 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:20:08,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 555 transitions. [2022-01-10 07:20:08,089 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 555 transitions. Word has length 121 [2022-01-10 07:20:08,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:20:08,090 INFO L470 AbstractCegarLoop]: Abstraction has 388 states and 555 transitions. [2022-01-10 07:20:08,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:20:08,090 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 555 transitions. [2022-01-10 07:20:08,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-01-10 07:20:08,090 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:20:08,091 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 07:20:08,111 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-01-10 07:20:08,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:20:08,298 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:20:08,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:20:08,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1782273755, now seen corresponding path program 1 times [2022-01-10 07:20:08,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:20:08,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1497418613] [2022-01-10 07:20:08,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:20:08,299 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:20:08,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:20:08,300 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:20:08,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-01-10 07:20:08,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:20:08,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:20:08,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:20:09,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:20:09,994 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:20:09,994 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:20:09,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1497418613] [2022-01-10 07:20:09,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1497418613] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:20:09,994 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:20:09,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 07:20:09,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288298750] [2022-01-10 07:20:09,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:20:09,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 07:20:09,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:20:09,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 07:20:09,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-01-10 07:20:09,995 INFO L87 Difference]: Start difference. First operand 388 states and 555 transitions. Second operand has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 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 07:20:10,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:20:10,277 INFO L93 Difference]: Finished difference Result 1106 states and 1679 transitions. [2022-01-10 07:20:10,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 07:20:10,277 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 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 07:20:10,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:20:10,280 INFO L225 Difference]: With dead ends: 1106 [2022-01-10 07:20:10,280 INFO L226 Difference]: Without dead ends: 1025 [2022-01-10 07:20:10,280 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-01-10 07:20:10,281 INFO L933 BasicCegarLoop]: 704 mSDtfsCounter, 1331 mSDsluCounter, 1652 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1331 SdHoareTripleChecker+Valid, 2356 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:20:10,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1331 Valid, 2356 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:20:10,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1025 states. [2022-01-10 07:20:10,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1025 to 565. [2022-01-10 07:20:10,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 564 states have (on average 1.4734042553191489) internal successors, (831), 564 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:20:10,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 831 transitions. [2022-01-10 07:20:10,299 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 831 transitions. Word has length 122 [2022-01-10 07:20:10,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:20:10,299 INFO L470 AbstractCegarLoop]: Abstraction has 565 states and 831 transitions. [2022-01-10 07:20:10,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 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 07:20:10,300 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 831 transitions. [2022-01-10 07:20:10,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-01-10 07:20:10,300 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:20:10,300 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 07:20:10,310 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-01-10 07:20:10,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:20:10,508 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:20:10,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:20:10,509 INFO L85 PathProgramCache]: Analyzing trace with hash 355509661, now seen corresponding path program 1 times [2022-01-10 07:20:10,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:20:10,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1283941913] [2022-01-10 07:20:10,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:20:10,510 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:20:10,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:20:10,511 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:20:10,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-01-10 07:20:10,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:20:10,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:20:10,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:20:11,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:20:11,861 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:20:11,861 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:20:11,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1283941913] [2022-01-10 07:20:11,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1283941913] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:20:11,861 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:20:11,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 07:20:11,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228422088] [2022-01-10 07:20:11,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:20:11,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 07:20:11,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:20:11,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 07:20:11,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-01-10 07:20:11,864 INFO L87 Difference]: Start difference. First operand 565 states and 831 transitions. Second operand has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 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 07:20:12,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:20:12,100 INFO L93 Difference]: Finished difference Result 1199 states and 1823 transitions. [2022-01-10 07:20:12,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 07:20:12,100 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 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 07:20:12,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:20:12,104 INFO L225 Difference]: With dead ends: 1199 [2022-01-10 07:20:12,104 INFO L226 Difference]: Without dead ends: 1118 [2022-01-10 07:20:12,104 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-01-10 07:20:12,104 INFO L933 BasicCegarLoop]: 587 mSDtfsCounter, 1139 mSDsluCounter, 1435 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1139 SdHoareTripleChecker+Valid, 2022 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:20:12,111 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1139 Valid, 2022 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:20:12,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1118 states. [2022-01-10 07:20:12,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1118 to 653. [2022-01-10 07:20:12,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 653 states, 652 states have (on average 1.4846625766871167) internal successors, (968), 652 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:20:12,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 968 transitions. [2022-01-10 07:20:12,146 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 968 transitions. Word has length 122 [2022-01-10 07:20:12,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:20:12,147 INFO L470 AbstractCegarLoop]: Abstraction has 653 states and 968 transitions. [2022-01-10 07:20:12,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 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 07:20:12,147 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 968 transitions. [2022-01-10 07:20:12,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-01-10 07:20:12,148 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:20:12,148 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 07:20:12,175 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-01-10 07:20:12,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:20:12,361 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:20:12,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:20:12,362 INFO L85 PathProgramCache]: Analyzing trace with hash 329494974, now seen corresponding path program 1 times [2022-01-10 07:20:12,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:20:12,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1194160461] [2022-01-10 07:20:12,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:20:12,362 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:20:12,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:20:12,363 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:20:12,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-01-10 07:20:12,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:20:12,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:20:12,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:20:13,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:20:13,593 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:20:13,593 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:20:13,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1194160461] [2022-01-10 07:20:13,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1194160461] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:20:13,594 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:20:13,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 07:20:13,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462560835] [2022-01-10 07:20:13,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:20:13,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 07:20:13,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:20:13,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 07:20:13,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-01-10 07:20:13,601 INFO L87 Difference]: Start difference. First operand 653 states and 968 transitions. Second operand has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 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 07:20:13,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:20:13,835 INFO L93 Difference]: Finished difference Result 1282 states and 1953 transitions. [2022-01-10 07:20:13,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 07:20:13,835 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 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 07:20:13,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:20:13,844 INFO L225 Difference]: With dead ends: 1282 [2022-01-10 07:20:13,844 INFO L226 Difference]: Without dead ends: 1201 [2022-01-10 07:20:13,853 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-01-10 07:20:13,854 INFO L933 BasicCegarLoop]: 477 mSDtfsCounter, 1185 mSDsluCounter, 1373 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1185 SdHoareTripleChecker+Valid, 1850 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:20:13,854 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1185 Valid, 1850 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:20:13,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1201 states. [2022-01-10 07:20:13,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1201 to 736. [2022-01-10 07:20:13,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 736 states, 735 states have (on average 1.493877551020408) internal successors, (1098), 735 states have internal predecessors, (1098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:20:13,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 1098 transitions. [2022-01-10 07:20:13,889 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 1098 transitions. Word has length 122 [2022-01-10 07:20:13,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:20:13,889 INFO L470 AbstractCegarLoop]: Abstraction has 736 states and 1098 transitions. [2022-01-10 07:20:13,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 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 07:20:13,889 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 1098 transitions. [2022-01-10 07:20:13,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-01-10 07:20:13,890 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:20:13,890 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 07:20:13,898 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-01-10 07:20:14,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:20:14,100 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:20:14,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:20:14,100 INFO L85 PathProgramCache]: Analyzing trace with hash 160038945, now seen corresponding path program 1 times [2022-01-10 07:20:14,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:20:14,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1250333941] [2022-01-10 07:20:14,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:20:14,101 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:20:14,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:20:14,102 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:20:14,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-01-10 07:20:14,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:20:14,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:20:14,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:20:15,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:20:15,563 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:20:15,564 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:20:15,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1250333941] [2022-01-10 07:20:15,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1250333941] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:20:15,564 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:20:15,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 07:20:15,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471240745] [2022-01-10 07:20:15,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:20:15,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 07:20:15,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:20:15,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 07:20:15,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-01-10 07:20:15,565 INFO L87 Difference]: Start difference. First operand 736 states and 1098 transitions. Second operand has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 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 07:20:15,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:20:15,791 INFO L93 Difference]: Finished difference Result 1361 states and 2078 transitions. [2022-01-10 07:20:15,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 07:20:15,838 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 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 07:20:15,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:20:15,842 INFO L225 Difference]: With dead ends: 1361 [2022-01-10 07:20:15,842 INFO L226 Difference]: Without dead ends: 1122 [2022-01-10 07:20:15,842 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-01-10 07:20:15,842 INFO L933 BasicCegarLoop]: 682 mSDtfsCounter, 1454 mSDsluCounter, 1411 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1454 SdHoareTripleChecker+Valid, 2093 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:20:15,843 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1454 Valid, 2093 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:20:15,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1122 states. [2022-01-10 07:20:15,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1122 to 657. [2022-01-10 07:20:15,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 656 states have (on average 1.478658536585366) internal successors, (970), 656 states have internal predecessors, (970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:20:15,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 970 transitions. [2022-01-10 07:20:15,860 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 970 transitions. Word has length 122 [2022-01-10 07:20:15,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:20:15,860 INFO L470 AbstractCegarLoop]: Abstraction has 657 states and 970 transitions. [2022-01-10 07:20:15,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 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 07:20:15,860 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 970 transitions. [2022-01-10 07:20:15,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-01-10 07:20:15,861 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:20:15,861 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 07:20:15,882 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2022-01-10 07:20:16,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:20:16,083 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:20:16,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:20:16,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1992429060, now seen corresponding path program 1 times [2022-01-10 07:20:16,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:20:16,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1360454729] [2022-01-10 07:20:16,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:20:16,084 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:20:16,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:20:16,085 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:20:16,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-01-10 07:20:16,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:20:16,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:20:16,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:20:17,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:20:17,790 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:20:17,790 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:20:17,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1360454729] [2022-01-10 07:20:17,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1360454729] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:20:17,790 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:20:17,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 07:20:17,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755532728] [2022-01-10 07:20:17,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:20:17,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 07:20:17,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:20:17,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 07:20:17,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-01-10 07:20:17,794 INFO L87 Difference]: Start difference. First operand 657 states and 970 transitions. Second operand has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 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 07:20:18,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:20:18,013 INFO L93 Difference]: Finished difference Result 1291 states and 1962 transitions. [2022-01-10 07:20:18,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 07:20:18,013 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 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 07:20:18,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:20:18,034 INFO L225 Difference]: With dead ends: 1291 [2022-01-10 07:20:18,034 INFO L226 Difference]: Without dead ends: 1210 [2022-01-10 07:20:18,034 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-01-10 07:20:18,035 INFO L933 BasicCegarLoop]: 800 mSDtfsCounter, 1442 mSDsluCounter, 1185 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1442 SdHoareTripleChecker+Valid, 1985 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:20:18,035 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1442 Valid, 1985 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:20:18,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2022-01-10 07:20:18,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 750. [2022-01-10 07:20:18,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 750 states, 749 states have (on average 1.4873164218958612) internal successors, (1114), 749 states have internal predecessors, (1114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:20:18,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 750 states to 750 states and 1114 transitions. [2022-01-10 07:20:18,091 INFO L78 Accepts]: Start accepts. Automaton has 750 states and 1114 transitions. Word has length 122 [2022-01-10 07:20:18,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:20:18,092 INFO L470 AbstractCegarLoop]: Abstraction has 750 states and 1114 transitions. [2022-01-10 07:20:18,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 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 07:20:18,092 INFO L276 IsEmpty]: Start isEmpty. Operand 750 states and 1114 transitions. [2022-01-10 07:20:18,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-01-10 07:20:18,093 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:20:18,093 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 07:20:18,103 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-01-10 07:20:18,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:20:18,301 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:20:18,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:20:18,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1287164986, now seen corresponding path program 1 times [2022-01-10 07:20:18,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:20:18,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1588258065] [2022-01-10 07:20:18,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:20:18,302 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:20:18,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:20:18,303 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:20:18,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-01-10 07:20:18,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:20:18,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:20:18,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:20:19,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:20:19,505 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:20:19,505 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:20:19,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1588258065] [2022-01-10 07:20:19,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1588258065] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:20:19,505 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:20:19,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 07:20:19,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102921089] [2022-01-10 07:20:19,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:20:19,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 07:20:19,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:20:19,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 07:20:19,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-01-10 07:20:19,507 INFO L87 Difference]: Start difference. First operand 750 states and 1114 transitions. Second operand has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 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 07:20:19,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:20:19,679 INFO L93 Difference]: Finished difference Result 1389 states and 2113 transitions. [2022-01-10 07:20:19,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 07:20:19,680 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 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 07:20:19,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:20:19,700 INFO L225 Difference]: With dead ends: 1389 [2022-01-10 07:20:19,700 INFO L226 Difference]: Without dead ends: 1308 [2022-01-10 07:20:19,701 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-01-10 07:20:19,701 INFO L933 BasicCegarLoop]: 815 mSDtfsCounter, 1326 mSDsluCounter, 1457 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1326 SdHoareTripleChecker+Valid, 2272 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:20:19,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1326 Valid, 2272 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 07:20:19,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1308 states. [2022-01-10 07:20:19,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1308 to 853. [2022-01-10 07:20:19,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 853 states, 852 states have (on average 1.4929577464788732) internal successors, (1272), 852 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:20:19,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 853 states to 853 states and 1272 transitions. [2022-01-10 07:20:19,746 INFO L78 Accepts]: Start accepts. Automaton has 853 states and 1272 transitions. Word has length 122 [2022-01-10 07:20:19,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:20:19,746 INFO L470 AbstractCegarLoop]: Abstraction has 853 states and 1272 transitions. [2022-01-10 07:20:19,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 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 07:20:19,746 INFO L276 IsEmpty]: Start isEmpty. Operand 853 states and 1272 transitions. [2022-01-10 07:20:19,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-01-10 07:20:19,759 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:20:19,759 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:20:19,768 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-01-10 07:20:19,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:20:19,967 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:20:19,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:20:19,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1332046361, now seen corresponding path program 1 times [2022-01-10 07:20:19,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:20:19,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1295664453] [2022-01-10 07:20:19,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:20:19,968 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:20:19,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:20:19,968 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:20:19,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-01-10 07:20:20,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:20:20,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:20:20,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:20:21,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:20:21,240 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:20:21,240 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:20:21,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1295664453] [2022-01-10 07:20:21,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1295664453] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:20:21,250 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:20:21,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 07:20:21,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800025464] [2022-01-10 07:20:21,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:20:21,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 07:20:21,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:20:21,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 07:20:21,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-01-10 07:20:21,251 INFO L87 Difference]: Start difference. First operand 853 states and 1272 transitions. Second operand has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 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 07:20:21,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:20:21,423 INFO L93 Difference]: Finished difference Result 1492 states and 2271 transitions. [2022-01-10 07:20:21,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 07:20:21,423 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 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 07:20:21,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:20:21,434 INFO L225 Difference]: With dead ends: 1492 [2022-01-10 07:20:21,434 INFO L226 Difference]: Without dead ends: 1411 [2022-01-10 07:20:21,436 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-01-10 07:20:21,437 INFO L933 BasicCegarLoop]: 718 mSDtfsCounter, 1585 mSDsluCounter, 1172 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1585 SdHoareTripleChecker+Valid, 1890 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:20:21,437 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1585 Valid, 1890 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 07:20:21,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1411 states. [2022-01-10 07:20:21,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1411 to 956. [2022-01-10 07:20:21,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 956 states, 955 states have (on average 1.4973821989528795) internal successors, (1430), 955 states have internal predecessors, (1430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:20:21,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 956 states to 956 states and 1430 transitions. [2022-01-10 07:20:21,500 INFO L78 Accepts]: Start accepts. Automaton has 956 states and 1430 transitions. Word has length 122 [2022-01-10 07:20:21,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:20:21,500 INFO L470 AbstractCegarLoop]: Abstraction has 956 states and 1430 transitions. [2022-01-10 07:20:21,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 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 07:20:21,501 INFO L276 IsEmpty]: Start isEmpty. Operand 956 states and 1430 transitions. [2022-01-10 07:20:21,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-10 07:20:21,501 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:20:21,501 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:20:21,510 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-01-10 07:20:21,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:20:21,722 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:20:21,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:20:21,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1982702915, now seen corresponding path program 1 times [2022-01-10 07:20:21,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:20:21,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [261475688] [2022-01-10 07:20:21,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:20:21,723 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:20:21,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:20:21,724 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:20:21,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-01-10 07:20:21,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:20:21,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 07:20:21,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:20:22,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:20:22,920 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:20:22,920 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:20:22,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [261475688] [2022-01-10 07:20:22,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [261475688] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:20:22,921 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:20:22,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-10 07:20:22,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925722262] [2022-01-10 07:20:22,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:20:22,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 07:20:22,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:20:22,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 07:20:22,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-10 07:20:22,922 INFO L87 Difference]: Start difference. First operand 956 states and 1430 transitions. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:20:23,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:20:23,016 INFO L93 Difference]: Finished difference Result 1125 states and 1696 transitions. [2022-01-10 07:20:23,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 07:20:23,016 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 123 [2022-01-10 07:20:23,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:20:23,018 INFO L225 Difference]: With dead ends: 1125 [2022-01-10 07:20:23,018 INFO L226 Difference]: Without dead ends: 947 [2022-01-10 07:20:23,019 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-01-10 07:20:23,019 INFO L933 BasicCegarLoop]: 236 mSDtfsCounter, 68 mSDsluCounter, 1468 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 1704 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 112 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:20:23,019 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 1704 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 112 Unchecked, 0.0s Time] [2022-01-10 07:20:23,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 947 states. [2022-01-10 07:20:23,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 947 to 947. [2022-01-10 07:20:23,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 947 states, 946 states have (on average 1.492600422832981) internal successors, (1412), 946 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:20:23,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 947 states to 947 states and 1412 transitions. [2022-01-10 07:20:23,044 INFO L78 Accepts]: Start accepts. Automaton has 947 states and 1412 transitions. Word has length 123 [2022-01-10 07:20:23,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:20:23,044 INFO L470 AbstractCegarLoop]: Abstraction has 947 states and 1412 transitions. [2022-01-10 07:20:23,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:20:23,044 INFO L276 IsEmpty]: Start isEmpty. Operand 947 states and 1412 transitions. [2022-01-10 07:20:23,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-10 07:20:23,045 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:20:23,045 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:20:23,053 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-01-10 07:20:23,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:20:23,252 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:20:23,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:20:23,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1956688228, now seen corresponding path program 1 times [2022-01-10 07:20:23,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:20:23,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [165358007] [2022-01-10 07:20:23,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:20:23,253 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:20:23,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:20:23,254 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:20:23,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-01-10 07:20:23,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:20:23,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 49 conjunts are in the unsatisfiable core [2022-01-10 07:20:23,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:20:37,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:20:37,481 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:20:37,481 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:20:37,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [165358007] [2022-01-10 07:20:37,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [165358007] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:20:37,481 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:20:37,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [42] imperfect sequences [] total 42 [2022-01-10 07:20:37,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367952237] [2022-01-10 07:20:37,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:20:37,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-01-10 07:20:37,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:20:37,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-01-10 07:20:37,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=1521, Unknown=0, NotChecked=0, Total=1722 [2022-01-10 07:20:37,482 INFO L87 Difference]: Start difference. First operand 947 states and 1412 transitions. Second operand has 42 states, 42 states have (on average 2.9285714285714284) internal successors, (123), 42 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:20:37,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:20:37,776 INFO L93 Difference]: Finished difference Result 1062 states and 1586 transitions. [2022-01-10 07:20:37,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-10 07:20:37,776 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.9285714285714284) internal successors, (123), 42 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 123 [2022-01-10 07:20:37,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:20:37,778 INFO L225 Difference]: With dead ends: 1062 [2022-01-10 07:20:37,778 INFO L226 Difference]: Without dead ends: 977 [2022-01-10 07:20:37,779 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 485 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=219, Invalid=1587, Unknown=0, NotChecked=0, Total=1806 [2022-01-10 07:20:37,783 INFO L933 BasicCegarLoop]: 207 mSDtfsCounter, 143 mSDsluCounter, 4030 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 4237 SdHoareTripleChecker+Invalid, 2485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2290 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:20:37,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [143 Valid, 4237 Invalid, 2485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 192 Invalid, 0 Unknown, 2290 Unchecked, 0.2s Time] [2022-01-10 07:20:37,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2022-01-10 07:20:37,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 969. [2022-01-10 07:20:37,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 969 states, 968 states have (on average 1.487603305785124) internal successors, (1440), 968 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:20:37,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 969 states to 969 states and 1440 transitions. [2022-01-10 07:20:37,811 INFO L78 Accepts]: Start accepts. Automaton has 969 states and 1440 transitions. Word has length 123 [2022-01-10 07:20:37,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:20:37,811 INFO L470 AbstractCegarLoop]: Abstraction has 969 states and 1440 transitions. [2022-01-10 07:20:37,811 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.9285714285714284) internal successors, (123), 42 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:20:37,811 INFO L276 IsEmpty]: Start isEmpty. Operand 969 states and 1440 transitions. [2022-01-10 07:20:37,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-10 07:20:37,812 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:20:37,812 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:20:37,821 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-01-10 07:20:38,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:20:38,019 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:20:38,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:20:38,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1787232199, now seen corresponding path program 1 times [2022-01-10 07:20:38,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:20:38,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1031409205] [2022-01-10 07:20:38,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:20:38,020 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:20:38,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:20:38,021 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:20:38,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-01-10 07:20:38,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:20:38,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 07:20:38,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:20:39,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:20:39,503 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:20:39,503 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:20:39,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1031409205] [2022-01-10 07:20:39,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1031409205] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:20:39,503 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:20:39,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-10 07:20:39,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553610379] [2022-01-10 07:20:39,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:20:39,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 07:20:39,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:20:39,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 07:20:39,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-10 07:20:39,504 INFO L87 Difference]: Start difference. First operand 969 states and 1440 transitions. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:20:39,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:20:39,569 INFO L93 Difference]: Finished difference Result 1148 states and 1719 transitions. [2022-01-10 07:20:39,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 07:20:39,570 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 123 [2022-01-10 07:20:39,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:20:39,572 INFO L225 Difference]: With dead ends: 1148 [2022-01-10 07:20:39,572 INFO L226 Difference]: Without dead ends: 937 [2022-01-10 07:20:39,572 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-01-10 07:20:39,574 INFO L933 BasicCegarLoop]: 237 mSDtfsCounter, 62 mSDsluCounter, 1281 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 1518 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 96 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:20:39,574 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 1518 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 96 Unchecked, 0.0s Time] [2022-01-10 07:20:39,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 937 states. [2022-01-10 07:20:39,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 937 to 928. [2022-01-10 07:20:39,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 928 states, 927 states have (on average 1.4919093851132685) internal successors, (1383), 927 states have internal predecessors, (1383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:20:39,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 928 states to 928 states and 1383 transitions. [2022-01-10 07:20:39,600 INFO L78 Accepts]: Start accepts. Automaton has 928 states and 1383 transitions. Word has length 123 [2022-01-10 07:20:39,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:20:39,600 INFO L470 AbstractCegarLoop]: Abstraction has 928 states and 1383 transitions. [2022-01-10 07:20:39,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:20:39,609 INFO L276 IsEmpty]: Start isEmpty. Operand 928 states and 1383 transitions. [2022-01-10 07:20:39,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-10 07:20:39,610 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:20:39,610 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:20:39,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-01-10 07:20:39,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:20:39,817 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:20:39,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:20:39,817 INFO L85 PathProgramCache]: Analyzing trace with hash -299237052, now seen corresponding path program 1 times [2022-01-10 07:20:39,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:20:39,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1765637387] [2022-01-10 07:20:39,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:20:39,818 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:20:39,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:20:39,819 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:20:39,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-01-10 07:20:39,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:20:39,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 51 conjunts are in the unsatisfiable core [2022-01-10 07:20:39,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:21:01,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:21:01,905 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:21:01,905 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:21:01,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1765637387] [2022-01-10 07:21:01,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1765637387] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:21:01,905 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:21:01,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [44] imperfect sequences [] total 44 [2022-01-10 07:21:01,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041060589] [2022-01-10 07:21:01,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:21:01,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-01-10 07:21:01,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:21:01,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-01-10 07:21:01,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=1656, Unknown=0, NotChecked=0, Total=1892 [2022-01-10 07:21:01,931 INFO L87 Difference]: Start difference. First operand 928 states and 1383 transitions. Second operand has 44 states, 44 states have (on average 2.7954545454545454) internal successors, (123), 44 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:21:02,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:21:02,267 INFO L93 Difference]: Finished difference Result 1113 states and 1669 transitions. [2022-01-10 07:21:02,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-10 07:21:02,267 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.7954545454545454) internal successors, (123), 44 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 123 [2022-01-10 07:21:02,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:21:02,269 INFO L225 Difference]: With dead ends: 1113 [2022-01-10 07:21:02,269 INFO L226 Difference]: Without dead ends: 949 [2022-01-10 07:21:02,270 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 535 ImplicationChecksByTransitivity, 15.6s TimeCoverageRelationStatistics Valid=256, Invalid=1724, Unknown=0, NotChecked=0, Total=1980 [2022-01-10 07:21:02,272 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 168 mSDsluCounter, 3191 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 3373 SdHoareTripleChecker+Invalid, 2069 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1849 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:21:02,273 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [168 Valid, 3373 Invalid, 2069 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 217 Invalid, 0 Unknown, 1849 Unchecked, 0.2s Time] [2022-01-10 07:21:02,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 949 states. [2022-01-10 07:21:02,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 949 to 949. [2022-01-10 07:21:02,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 949 states, 948 states have (on average 1.4862869198312236) internal successors, (1409), 948 states have internal predecessors, (1409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:21:02,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 949 states to 949 states and 1409 transitions. [2022-01-10 07:21:02,337 INFO L78 Accepts]: Start accepts. Automaton has 949 states and 1409 transitions. Word has length 123 [2022-01-10 07:21:02,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:21:02,338 INFO L470 AbstractCegarLoop]: Abstraction has 949 states and 1409 transitions. [2022-01-10 07:21:02,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.7954545454545454) internal successors, (123), 44 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:21:02,338 INFO L276 IsEmpty]: Start isEmpty. Operand 949 states and 1409 transitions. [2022-01-10 07:21:02,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-10 07:21:02,338 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:21:02,338 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:21:02,348 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-01-10 07:21:02,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:21:02,546 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:21:02,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:21:02,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1138642343, now seen corresponding path program 1 times [2022-01-10 07:21:02,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:21:02,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [705196933] [2022-01-10 07:21:02,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:21:02,547 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:21:02,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:21:02,548 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:21:02,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-01-10 07:21:02,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:21:02,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 07:21:02,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:21:02,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:21:02,953 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:21:02,954 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:21:02,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [705196933] [2022-01-10 07:21:02,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [705196933] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:21:02,954 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:21:02,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:21:02,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208129996] [2022-01-10 07:21:02,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:21:02,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:21:02,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:21:02,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:21:02,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:21:02,955 INFO L87 Difference]: Start difference. First operand 949 states and 1409 transitions. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:21:02,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:21:02,990 INFO L93 Difference]: Finished difference Result 1789 states and 2733 transitions. [2022-01-10 07:21:02,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:21:02,991 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 123 [2022-01-10 07:21:02,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:21:02,993 INFO L225 Difference]: With dead ends: 1789 [2022-01-10 07:21:02,993 INFO L226 Difference]: Without dead ends: 1076 [2022-01-10 07:21:02,994 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:21:02,994 INFO L933 BasicCegarLoop]: 250 mSDtfsCounter, 120 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 615 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 12 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:21:02,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 615 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 12 Unchecked, 0.0s Time] [2022-01-10 07:21:02,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1076 states. [2022-01-10 07:21:03,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1076 to 1073. [2022-01-10 07:21:03,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1073 states, 1072 states have (on average 1.4869402985074627) internal successors, (1594), 1072 states have internal predecessors, (1594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:21:03,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1073 states to 1073 states and 1594 transitions. [2022-01-10 07:21:03,033 INFO L78 Accepts]: Start accepts. Automaton has 1073 states and 1594 transitions. Word has length 123 [2022-01-10 07:21:03,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:21:03,033 INFO L470 AbstractCegarLoop]: Abstraction has 1073 states and 1594 transitions. [2022-01-10 07:21:03,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:21:03,033 INFO L276 IsEmpty]: Start isEmpty. Operand 1073 states and 1594 transitions. [2022-01-10 07:21:03,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-10 07:21:03,034 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:21:03,034 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:21:03,052 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-01-10 07:21:03,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:21:03,241 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:21:03,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:21:03,242 INFO L85 PathProgramCache]: Analyzing trace with hash 905017955, now seen corresponding path program 1 times [2022-01-10 07:21:03,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:21:03,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1204410187] [2022-01-10 07:21:03,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:21:03,242 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:21:03,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:21:03,244 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:21:03,248 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-01-10 07:21:03,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:21:03,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 52 conjunts are in the unsatisfiable core [2022-01-10 07:21:03,374 INFO L286 TraceCheckSpWp]: Computing forward predicates...