/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --cacsl2boogietranslator.allow.undefined.functions true --traceabstraction.smt.solver External_ModelsAndUnsatCoreMode --traceabstraction.command.for.external.solver 'z3 -smt2 -in SMTLIB2_COMPLIANT=true' -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/hardware-verification-array/btor2c-lazyMod.safe_linked_list_fifo_n2d4.c -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-356b6ba-m [2024-11-01 03:49:54,303 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-01 03:49:54,395 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf [2024-11-01 03:49:54,402 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-01 03:49:54,402 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-01 03:49:54,435 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-01 03:49:54,435 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-01 03:49:54,436 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-01 03:49:54,437 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-01 03:49:54,439 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-01 03:49:54,439 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-01 03:49:54,441 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-01 03:49:54,442 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-01 03:49:54,442 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-01 03:49:54,443 INFO L153 SettingsManager]: * Use SBE=true [2024-11-01 03:49:54,443 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-01 03:49:54,443 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-01 03:49:54,443 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-01 03:49:54,444 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-01 03:49:54,444 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-01 03:49:54,445 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-01 03:49:54,446 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-01 03:49:54,446 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-01 03:49:54,446 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-01 03:49:54,446 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-01 03:49:54,446 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-01 03:49:54,447 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-01 03:49:54,447 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-01 03:49:54,447 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-01 03:49:54,447 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-01 03:49:54,448 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-01 03:49:54,448 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-01 03:49:54,448 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-01 03:49:54,448 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-01 03:49:54,449 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-01 03:49:54,449 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-01 03:49:54,453 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-01 03:49:54,453 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-01 03:49:54,453 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-01 03:49:54,453 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-01 03:49:54,454 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-01 03:49:54,454 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-11-01 03:49:54,454 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:49:54,757 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-01 03:49:54,779 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-01 03:49:54,783 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-01 03:49:54,784 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-01 03:49:54,785 INFO L274 PluginConnector]: CDTParser initialized [2024-11-01 03:49:54,786 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-array/btor2c-lazyMod.safe_linked_list_fifo_n2d4.c [2024-11-01 03:49:56,246 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-01 03:49:56,566 INFO L384 CDTParser]: Found 1 translation units. [2024-11-01 03:49:56,567 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-array/btor2c-lazyMod.safe_linked_list_fifo_n2d4.c [2024-11-01 03:49:56,585 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2cab09be5/83859ea55aac4b9a86d036c8e32ac367/FLAGb1319d9d6 [2024-11-01 03:49:56,606 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2cab09be5/83859ea55aac4b9a86d036c8e32ac367 [2024-11-01 03:49:56,609 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-01 03:49:56,610 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-01 03:49:56,611 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-01 03:49:56,613 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-01 03:49:56,618 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-01 03:49:56,618 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.11 03:49:56" (1/1) ... [2024-11-01 03:49:56,619 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2890dfc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 03:49:56, skipping insertion in model container [2024-11-01 03:49:56,620 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.11 03:49:56" (1/1) ... [2024-11-01 03:49:56,684 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-01 03:49:56,886 WARN L251 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-array/btor2c-lazyMod.safe_linked_list_fifo_n2d4.c[1266,1279] [2024-11-01 03:49:57,141 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-01 03:49:57,152 INFO L200 MainTranslator]: Completed pre-run [2024-11-01 03:49:57,163 WARN L251 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-array/btor2c-lazyMod.safe_linked_list_fifo_n2d4.c[1266,1279] [2024-11-01 03:49:57,304 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-01 03:49:57,321 INFO L204 MainTranslator]: Completed translation [2024-11-01 03:49:57,323 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 03:49:57 WrapperNode [2024-11-01 03:49:57,323 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-01 03:49:57,324 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-01 03:49:57,324 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-01 03:49:57,324 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-01 03:49:57,332 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 03:49:57" (1/1) ... [2024-11-01 03:49:57,377 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 03:49:57" (1/1) ... [2024-11-01 03:49:57,462 INFO L138 Inliner]: procedures = 18, calls = 107, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1594 [2024-11-01 03:49:57,462 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-01 03:49:57,464 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-01 03:49:57,464 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-01 03:49:57,464 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-01 03:49:57,474 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 03:49:57" (1/1) ... [2024-11-01 03:49:57,474 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 03:49:57" (1/1) ... [2024-11-01 03:49:57,489 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 03:49:57" (1/1) ... [2024-11-01 03:49:57,532 INFO L175 MemorySlicer]: Split 63 memory accesses to 4 slices as follows [2, 29, 24, 8]. 46 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 30 writes are split as follows [0, 14, 12, 4]. [2024-11-01 03:49:57,532 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 03:49:57" (1/1) ... [2024-11-01 03:49:57,532 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 03:49:57" (1/1) ... [2024-11-01 03:49:57,571 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 03:49:57" (1/1) ... [2024-11-01 03:49:57,577 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 03:49:57" (1/1) ... [2024-11-01 03:49:57,591 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 03:49:57" (1/1) ... [2024-11-01 03:49:57,606 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 03:49:57" (1/1) ... [2024-11-01 03:49:57,628 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-01 03:49:57,630 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-01 03:49:57,630 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-01 03:49:57,630 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-01 03:49:57,631 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 03:49:57" (1/1) ... [2024-11-01 03:49:57,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-01 03:49:57,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 03:49:57,665 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-01 03:49:57,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-01 03:49:57,698 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-01 03:49:57,699 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2024-11-01 03:49:57,699 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2024-11-01 03:49:57,699 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2024-11-01 03:49:57,699 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#3 [2024-11-01 03:49:57,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-01 03:49:57,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-01 03:49:57,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-01 03:49:57,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2024-11-01 03:49:57,700 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-01 03:49:57,700 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-01 03:49:57,700 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-01 03:49:57,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-01 03:49:57,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-01 03:49:57,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0 [2024-11-01 03:49:57,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#1 [2024-11-01 03:49:57,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#2 [2024-11-01 03:49:57,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#3 [2024-11-01 03:49:57,701 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-01 03:49:58,047 INFO L238 CfgBuilder]: Building ICFG [2024-11-01 03:49:58,049 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-01 03:49:59,345 INFO L? ?]: Removed 1019 outVars from TransFormulas that were not future-live. [2024-11-01 03:49:59,346 INFO L287 CfgBuilder]: Performing block encoding [2024-11-01 03:49:59,362 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-01 03:49:59,362 INFO L316 CfgBuilder]: Removed 19 assume(true) statements. [2024-11-01 03:49:59,363 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.11 03:49:59 BoogieIcfgContainer [2024-11-01 03:49:59,363 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-01 03:49:59,366 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-01 03:49:59,366 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-01 03:49:59,370 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-01 03:49:59,371 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.11 03:49:56" (1/3) ... [2024-11-01 03:49:59,371 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c48194d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.11 03:49:59, skipping insertion in model container [2024-11-01 03:49:59,371 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 03:49:57" (2/3) ... [2024-11-01 03:49:59,372 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c48194d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.11 03:49:59, skipping insertion in model container [2024-11-01 03:49:59,372 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.11 03:49:59" (3/3) ... [2024-11-01 03:49:59,373 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.safe_linked_list_fifo_n2d4.c [2024-11-01 03:49:59,387 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-01 03:49:59,388 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-01 03:49:59,449 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-01 03:49:59,454 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@42babc4f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-01 03:49:59,455 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-01 03:49:59,458 INFO L276 IsEmpty]: Start isEmpty. Operand has 78 states, 70 states have (on average 1.5714285714285714) internal successors, (110), 71 states have internal predecessors, (110), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-01 03:49:59,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-01 03:49:59,466 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 03:49:59,467 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 03:49:59,467 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 03:49:59,473 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 03:49:59,474 INFO L85 PathProgramCache]: Analyzing trace with hash -958431594, now seen corresponding path program 1 times [2024-11-01 03:49:59,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 03:49:59,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1334320179] [2024-11-01 03:49:59,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 03:49:59,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:49:59,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 03:49:59,487 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-01 03:49:59,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-01 03:50:00,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 03:50:00,085 INFO L255 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-01 03:50:00,094 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 03:50:00,126 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-01 03:50:00,127 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 03:50:00,171 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-01 03:50:00,172 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 03:50:00,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1334320179] [2024-11-01 03:50:00,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1334320179] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-01 03:50:00,176 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-01 03:50:00,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2024-11-01 03:50:00,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748686302] [2024-11-01 03:50:00,178 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-01 03:50:00,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-01 03:50:00,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 03:50:00,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-01 03:50:00,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-01 03:50:00,208 INFO L87 Difference]: Start difference. First operand has 78 states, 70 states have (on average 1.5714285714285714) internal successors, (110), 71 states have internal predecessors, (110), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-01 03:50:00,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 03:50:00,236 INFO L93 Difference]: Finished difference Result 149 states and 237 transitions. [2024-11-01 03:50:00,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-01 03:50:00,239 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 41 [2024-11-01 03:50:00,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 03:50:00,246 INFO L225 Difference]: With dead ends: 149 [2024-11-01 03:50:00,247 INFO L226 Difference]: Without dead ends: 75 [2024-11-01 03:50:00,251 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-01 03:50:00,256 INFO L432 NwaCegarLoop]: 97 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-01 03:50:00,257 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-01 03:50:00,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-01 03:50:00,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2024-11-01 03:50:00,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 68 states have (on average 1.2794117647058822) internal successors, (87), 68 states have internal predecessors, (87), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-01 03:50:00,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 97 transitions. [2024-11-01 03:50:00,297 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 97 transitions. Word has length 41 [2024-11-01 03:50:00,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 03:50:00,297 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 97 transitions. [2024-11-01 03:50:00,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-01 03:50:00,298 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 97 transitions. [2024-11-01 03:50:00,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-01 03:50:00,299 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 03:50:00,300 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 03:50:00,319 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-01 03:50:00,504 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:00,505 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 03:50:00,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 03:50:00,506 INFO L85 PathProgramCache]: Analyzing trace with hash 2099855424, now seen corresponding path program 1 times [2024-11-01 03:50:00,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 03:50:00,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2076699036] [2024-11-01 03:50:00,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 03:50:00,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:00,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 03:50:00,509 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-01 03:50:00,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-01 03:50:01,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 03:50:01,008 INFO L255 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-01 03:50:01,014 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 03:50:01,038 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-01 03:50:01,039 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 03:50:01,082 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-01 03:50:01,084 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 03:50:01,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2076699036] [2024-11-01 03:50:01,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2076699036] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-01 03:50:01,086 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-01 03:50:01,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-01 03:50:01,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621052931] [2024-11-01 03:50:01,087 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-01 03:50:01,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-01 03:50:01,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 03:50:01,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-01 03:50:01,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-01 03:50:01,091 INFO L87 Difference]: Start difference. First operand 75 states and 97 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-01 03:50:01,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 03:50:01,135 INFO L93 Difference]: Finished difference Result 149 states and 194 transitions. [2024-11-01 03:50:01,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-01 03:50:01,138 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 41 [2024-11-01 03:50:01,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 03:50:01,140 INFO L225 Difference]: With dead ends: 149 [2024-11-01 03:50:01,141 INFO L226 Difference]: Without dead ends: 78 [2024-11-01 03:50:01,141 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-01 03:50:01,142 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 2 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-01 03:50:01,142 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 279 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-01 03:50:01,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-01 03:50:01,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2024-11-01 03:50:01,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 71 states have (on average 1.267605633802817) internal successors, (90), 71 states have internal predecessors, (90), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-01 03:50:01,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 100 transitions. [2024-11-01 03:50:01,157 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 100 transitions. Word has length 41 [2024-11-01 03:50:01,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 03:50:01,157 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 100 transitions. [2024-11-01 03:50:01,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-01 03:50:01,158 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 100 transitions. [2024-11-01 03:50:01,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-01 03:50:01,159 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 03:50:01,159 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 03:50:01,179 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-01 03:50:01,363 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:01,364 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 03:50:01,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 03:50:01,364 INFO L85 PathProgramCache]: Analyzing trace with hash 963432764, now seen corresponding path program 1 times [2024-11-01 03:50:01,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 03:50:01,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [417718057] [2024-11-01 03:50:01,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 03:50:01,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:01,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 03:50:01,367 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-01 03:50:01,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-01 03:50:01,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 03:50:01,855 INFO L255 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-01 03:50:01,861 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 03:50:01,872 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-01 03:50:01,872 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 03:50:01,900 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-01 03:50:01,901 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 03:50:01,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [417718057] [2024-11-01 03:50:01,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [417718057] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-01 03:50:01,901 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-01 03:50:01,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-01 03:50:01,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375547881] [2024-11-01 03:50:01,902 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-01 03:50:01,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-01 03:50:01,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 03:50:01,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-01 03:50:01,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-01 03:50:01,903 INFO L87 Difference]: Start difference. First operand 78 states and 100 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-01 03:50:01,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 03:50:01,941 INFO L93 Difference]: Finished difference Result 149 states and 193 transitions. [2024-11-01 03:50:01,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-01 03:50:01,943 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 45 [2024-11-01 03:50:01,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 03:50:01,944 INFO L225 Difference]: With dead ends: 149 [2024-11-01 03:50:01,944 INFO L226 Difference]: Without dead ends: 81 [2024-11-01 03:50:01,945 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-01 03:50:01,946 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 3 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-01 03:50:01,946 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 186 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-01 03:50:01,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-11-01 03:50:01,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2024-11-01 03:50:01,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 74 states have (on average 1.2567567567567568) internal successors, (93), 74 states have internal predecessors, (93), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-01 03:50:01,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 103 transitions. [2024-11-01 03:50:01,953 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 103 transitions. Word has length 45 [2024-11-01 03:50:01,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 03:50:01,954 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 103 transitions. [2024-11-01 03:50:01,954 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-01 03:50:01,954 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 103 transitions. [2024-11-01 03:50:01,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-01 03:50:01,955 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 03:50:01,955 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 03:50:01,975 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-01 03:50:02,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:02,156 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 03:50:02,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 03:50:02,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1007195064, now seen corresponding path program 1 times [2024-11-01 03:50:02,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 03:50:02,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1854258047] [2024-11-01 03:50:02,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 03:50:02,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:02,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 03:50:02,158 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-01 03:50:02,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-01 03:50:02,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 03:50:02,628 INFO L255 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-01 03:50:02,636 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 03:50:02,648 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-01 03:50:02,648 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 03:50:02,679 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-01 03:50:02,679 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 03:50:02,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1854258047] [2024-11-01 03:50:02,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1854258047] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-01 03:50:02,680 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-01 03:50:02,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-01 03:50:02,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922375245] [2024-11-01 03:50:02,680 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-01 03:50:02,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-01 03:50:02,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 03:50:02,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-01 03:50:02,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-01 03:50:02,684 INFO L87 Difference]: Start difference. First operand 81 states and 103 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-01 03:50:02,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 03:50:02,740 INFO L93 Difference]: Finished difference Result 149 states and 192 transitions. [2024-11-01 03:50:02,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-01 03:50:02,742 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 49 [2024-11-01 03:50:02,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 03:50:02,743 INFO L225 Difference]: With dead ends: 149 [2024-11-01 03:50:02,743 INFO L226 Difference]: Without dead ends: 84 [2024-11-01 03:50:02,744 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-01 03:50:02,745 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 2 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-01 03:50:02,745 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 277 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-01 03:50:02,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-11-01 03:50:02,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2024-11-01 03:50:02,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 77 states have (on average 1.2467532467532467) internal successors, (96), 77 states have internal predecessors, (96), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-01 03:50:02,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 106 transitions. [2024-11-01 03:50:02,758 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 106 transitions. Word has length 49 [2024-11-01 03:50:02,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 03:50:02,758 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 106 transitions. [2024-11-01 03:50:02,759 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-01 03:50:02,759 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 106 transitions. [2024-11-01 03:50:02,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-01 03:50:02,760 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 03:50:02,760 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 03:50:02,781 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-01 03:50:02,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:02,961 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 03:50:02,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 03:50:02,962 INFO L85 PathProgramCache]: Analyzing trace with hash -2038061132, now seen corresponding path program 1 times [2024-11-01 03:50:02,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 03:50:02,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [364827743] [2024-11-01 03:50:02,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 03:50:02,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:02,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 03:50:02,964 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-01 03:50:02,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-01 03:50:03,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 03:50:03,452 INFO L255 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-01 03:50:03,456 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 03:50:03,499 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-01 03:50:03,499 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 03:50:03,592 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-01 03:50:03,592 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 03:50:03,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [364827743] [2024-11-01 03:50:03,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [364827743] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-01 03:50:03,592 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-01 03:50:03,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 9 [2024-11-01 03:50:03,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133227682] [2024-11-01 03:50:03,593 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-01 03:50:03,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-01 03:50:03,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 03:50:03,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-01 03:50:03,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-11-01 03:50:03,594 INFO L87 Difference]: Start difference. First operand 84 states and 106 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-01 03:50:03,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 03:50:03,669 INFO L93 Difference]: Finished difference Result 169 states and 216 transitions. [2024-11-01 03:50:03,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-01 03:50:03,670 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 53 [2024-11-01 03:50:03,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 03:50:03,671 INFO L225 Difference]: With dead ends: 169 [2024-11-01 03:50:03,671 INFO L226 Difference]: Without dead ends: 92 [2024-11-01 03:50:03,672 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-11-01 03:50:03,672 INFO L432 NwaCegarLoop]: 94 mSDtfsCounter, 3 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-01 03:50:03,673 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 462 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-01 03:50:03,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-11-01 03:50:03,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2024-11-01 03:50:03,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 85 states have (on average 1.2352941176470589) internal successors, (105), 85 states have internal predecessors, (105), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-01 03:50:03,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 115 transitions. [2024-11-01 03:50:03,688 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 115 transitions. Word has length 53 [2024-11-01 03:50:03,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 03:50:03,688 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 115 transitions. [2024-11-01 03:50:03,689 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-01 03:50:03,689 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 115 transitions. [2024-11-01 03:50:03,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-01 03:50:03,689 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 03:50:03,690 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 03:50:03,711 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-01 03:50:03,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:03,891 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 03:50:03,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 03:50:03,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1928044208, now seen corresponding path program 2 times [2024-11-01 03:50:03,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 03:50:03,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1038919052] [2024-11-01 03:50:03,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 03:50:03,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:03,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 03:50:03,909 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-01 03:50:03,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-01 03:50:04,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 03:50:04,404 INFO L255 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-01 03:50:04,412 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 03:50:04,444 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-01 03:50:04,444 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 03:50:04,530 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-01 03:50:04,531 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 03:50:04,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1038919052] [2024-11-01 03:50:04,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1038919052] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-01 03:50:04,531 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-01 03:50:04,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 9 [2024-11-01 03:50:04,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189086398] [2024-11-01 03:50:04,532 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-01 03:50:04,532 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-01 03:50:04,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 03:50:04,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-01 03:50:04,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-11-01 03:50:04,534 INFO L87 Difference]: Start difference. First operand 92 states and 115 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-01 03:50:04,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 03:50:04,644 INFO L93 Difference]: Finished difference Result 165 states and 211 transitions. [2024-11-01 03:50:04,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-01 03:50:04,646 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 57 [2024-11-01 03:50:04,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 03:50:04,647 INFO L225 Difference]: With dead ends: 165 [2024-11-01 03:50:04,647 INFO L226 Difference]: Without dead ends: 100 [2024-11-01 03:50:04,647 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-11-01 03:50:04,648 INFO L432 NwaCegarLoop]: 94 mSDtfsCounter, 3 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-01 03:50:04,648 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 458 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-01 03:50:04,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-11-01 03:50:04,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2024-11-01 03:50:04,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 93 states have (on average 1.2258064516129032) internal successors, (114), 93 states have internal predecessors, (114), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-01 03:50:04,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 124 transitions. [2024-11-01 03:50:04,661 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 124 transitions. Word has length 57 [2024-11-01 03:50:04,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 03:50:04,662 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 124 transitions. [2024-11-01 03:50:04,662 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-01 03:50:04,664 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 124 transitions. [2024-11-01 03:50:04,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-01 03:50:04,664 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 03:50:04,665 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 03:50:04,686 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-01 03:50:04,865 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:04,866 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 03:50:04,866 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 03:50:04,866 INFO L85 PathProgramCache]: Analyzing trace with hash 779777708, now seen corresponding path program 3 times [2024-11-01 03:50:04,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 03:50:04,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1012300015] [2024-11-01 03:50:04,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 03:50:04,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:04,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 03:50:04,868 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-01 03:50:04,869 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-01 03:50:05,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 03:50:05,403 INFO L255 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-01 03:50:05,412 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 03:50:05,878 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-01 03:50:05,878 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 03:50:06,779 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-01 03:50:06,780 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 03:50:06,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1012300015] [2024-11-01 03:50:06,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1012300015] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-01 03:50:06,781 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-01 03:50:06,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2024-11-01 03:50:06,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180859307] [2024-11-01 03:50:06,782 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-01 03:50:06,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-01 03:50:06,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 03:50:06,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-01 03:50:06,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2024-11-01 03:50:06,784 INFO L87 Difference]: Start difference. First operand 100 states and 124 transitions. Second operand has 17 states, 15 states have (on average 3.6) internal successors, (54), 17 states have internal predecessors, (54), 4 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-01 03:50:07,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 03:50:07,307 INFO L93 Difference]: Finished difference Result 115 states and 144 transitions. [2024-11-01 03:50:07,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-01 03:50:07,308 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 3.6) internal successors, (54), 17 states have internal predecessors, (54), 4 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 4 states have call successors, (10) Word has length 61 [2024-11-01 03:50:07,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 03:50:07,309 INFO L225 Difference]: With dead ends: 115 [2024-11-01 03:50:07,309 INFO L226 Difference]: Without dead ends: 113 [2024-11-01 03:50:07,309 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2024-11-01 03:50:07,310 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 162 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-01 03:50:07,310 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 596 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-01 03:50:07,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-11-01 03:50:07,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 112. [2024-11-01 03:50:07,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 100 states have (on average 1.21) internal successors, (121), 100 states have internal predecessors, (121), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-01 03:50:07,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 141 transitions. [2024-11-01 03:50:07,332 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 141 transitions. Word has length 61 [2024-11-01 03:50:07,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 03:50:07,334 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 141 transitions. [2024-11-01 03:50:07,334 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 3.6) internal successors, (54), 17 states have internal predecessors, (54), 4 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-01 03:50:07,334 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 141 transitions. [2024-11-01 03:50:07,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-01 03:50:07,337 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 03:50:07,337 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 03:50:07,363 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-01 03:50:07,537 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:07,538 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 03:50:07,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 03:50:07,538 INFO L85 PathProgramCache]: Analyzing trace with hash -466492681, now seen corresponding path program 1 times [2024-11-01 03:50:07,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 03:50:07,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1051866529] [2024-11-01 03:50:07,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 03:50:07,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:07,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 03:50:07,541 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-01 03:50:07,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-01 03:50:08,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 03:50:08,463 INFO L255 TraceCheckSpWp]: Trace formula consists of 1528 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-01 03:50:08,470 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 03:50:08,481 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2024-11-01 03:50:08,482 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 03:50:08,526 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2024-11-01 03:50:08,527 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 03:50:08,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1051866529] [2024-11-01 03:50:08,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1051866529] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-01 03:50:08,527 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-01 03:50:08,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-01 03:50:08,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464326864] [2024-11-01 03:50:08,528 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-01 03:50:08,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-01 03:50:08,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 03:50:08,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-01 03:50:08,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-01 03:50:08,529 INFO L87 Difference]: Start difference. First operand 112 states and 141 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 03:50:08,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 03:50:08,576 INFO L93 Difference]: Finished difference Result 179 states and 229 transitions. [2024-11-01 03:50:08,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-01 03:50:08,578 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 124 [2024-11-01 03:50:08,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 03:50:08,579 INFO L225 Difference]: With dead ends: 179 [2024-11-01 03:50:08,579 INFO L226 Difference]: Without dead ends: 115 [2024-11-01 03:50:08,580 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-01 03:50:08,580 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 2 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-01 03:50:08,581 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 277 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-01 03:50:08,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-11-01 03:50:08,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2024-11-01 03:50:08,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 103 states have (on average 1.203883495145631) internal successors, (124), 103 states have internal predecessors, (124), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-01 03:50:08,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 144 transitions. [2024-11-01 03:50:08,593 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 144 transitions. Word has length 124 [2024-11-01 03:50:08,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 03:50:08,593 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 144 transitions. [2024-11-01 03:50:08,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 03:50:08,593 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 144 transitions. [2024-11-01 03:50:08,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-01 03:50:08,595 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 03:50:08,595 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 03:50:08,629 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-01 03:50:08,796 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:08,796 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 03:50:08,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 03:50:08,797 INFO L85 PathProgramCache]: Analyzing trace with hash 57551859, now seen corresponding path program 1 times [2024-11-01 03:50:08,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 03:50:08,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [710248764] [2024-11-01 03:50:08,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 03:50:08,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:08,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 03:50:08,799 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-01 03:50:08,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-01 03:50:09,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 03:50:09,733 INFO L255 TraceCheckSpWp]: Trace formula consists of 1540 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-01 03:50:09,738 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 03:50:09,781 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-01 03:50:09,781 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 03:50:09,828 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-11-01 03:50:09,828 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 03:50:09,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [710248764] [2024-11-01 03:50:09,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [710248764] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-01 03:50:09,828 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-01 03:50:09,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-01 03:50:09,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646912733] [2024-11-01 03:50:09,829 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-01 03:50:09,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-01 03:50:09,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 03:50:09,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-01 03:50:09,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-01 03:50:09,832 INFO L87 Difference]: Start difference. First operand 115 states and 144 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 03:50:09,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 03:50:09,880 INFO L93 Difference]: Finished difference Result 185 states and 235 transitions. [2024-11-01 03:50:09,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-01 03:50:09,883 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 128 [2024-11-01 03:50:09,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 03:50:09,884 INFO L225 Difference]: With dead ends: 185 [2024-11-01 03:50:09,884 INFO L226 Difference]: Without dead ends: 118 [2024-11-01 03:50:09,884 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-01 03:50:09,885 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 2 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-01 03:50:09,885 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 277 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-01 03:50:09,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2024-11-01 03:50:09,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2024-11-01 03:50:09,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 106 states have (on average 1.1981132075471699) internal successors, (127), 106 states have internal predecessors, (127), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-01 03:50:09,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 147 transitions. [2024-11-01 03:50:09,903 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 147 transitions. Word has length 128 [2024-11-01 03:50:09,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 03:50:09,904 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 147 transitions. [2024-11-01 03:50:09,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 03:50:09,904 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 147 transitions. [2024-11-01 03:50:09,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-11-01 03:50:09,905 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 03:50:09,905 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 03:50:09,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-01 03:50:10,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:10,106 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 03:50:10,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 03:50:10,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1200629359, now seen corresponding path program 1 times [2024-11-01 03:50:10,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 03:50:10,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [336863644] [2024-11-01 03:50:10,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 03:50:10,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:10,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 03:50:10,109 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-01 03:50:10,110 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-01 03:50:11,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 03:50:11,042 INFO L255 TraceCheckSpWp]: Trace formula consists of 1552 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-01 03:50:11,047 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 03:50:11,057 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2024-11-01 03:50:11,057 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 03:50:11,102 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2024-11-01 03:50:11,102 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 03:50:11,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [336863644] [2024-11-01 03:50:11,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [336863644] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-01 03:50:11,102 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-01 03:50:11,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-01 03:50:11,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934013522] [2024-11-01 03:50:11,103 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-01 03:50:11,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-01 03:50:11,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 03:50:11,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-01 03:50:11,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-01 03:50:11,104 INFO L87 Difference]: Start difference. First operand 118 states and 147 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 03:50:11,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 03:50:11,153 INFO L93 Difference]: Finished difference Result 191 states and 241 transitions. [2024-11-01 03:50:11,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-01 03:50:11,156 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 132 [2024-11-01 03:50:11,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 03:50:11,157 INFO L225 Difference]: With dead ends: 191 [2024-11-01 03:50:11,157 INFO L226 Difference]: Without dead ends: 121 [2024-11-01 03:50:11,158 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-01 03:50:11,158 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 2 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-01 03:50:11,159 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 277 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-01 03:50:11,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2024-11-01 03:50:11,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2024-11-01 03:50:11,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 109 states have (on average 1.1926605504587156) internal successors, (130), 109 states have internal predecessors, (130), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-01 03:50:11,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 150 transitions. [2024-11-01 03:50:11,170 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 150 transitions. Word has length 132 [2024-11-01 03:50:11,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 03:50:11,170 INFO L471 AbstractCegarLoop]: Abstraction has 121 states and 150 transitions. [2024-11-01 03:50:11,170 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 03:50:11,171 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 150 transitions. [2024-11-01 03:50:11,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-11-01 03:50:11,172 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 03:50:11,172 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 03:50:11,202 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-01 03:50:11,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:11,373 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 03:50:11,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 03:50:11,373 INFO L85 PathProgramCache]: Analyzing trace with hash 197194347, now seen corresponding path program 1 times [2024-11-01 03:50:11,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 03:50:11,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1446479160] [2024-11-01 03:50:11,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 03:50:11,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:11,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 03:50:11,375 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-01 03:50:11,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-01 03:50:12,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 03:50:12,446 INFO L255 TraceCheckSpWp]: Trace formula consists of 1564 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-01 03:50:12,451 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 03:50:12,463 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2024-11-01 03:50:12,463 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 03:50:12,506 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2024-11-01 03:50:12,506 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 03:50:12,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1446479160] [2024-11-01 03:50:12,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1446479160] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-01 03:50:12,507 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-01 03:50:12,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-01 03:50:12,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477754650] [2024-11-01 03:50:12,507 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-01 03:50:12,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-01 03:50:12,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 03:50:12,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-01 03:50:12,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-01 03:50:12,510 INFO L87 Difference]: Start difference. First operand 121 states and 150 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 03:50:12,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 03:50:12,555 INFO L93 Difference]: Finished difference Result 197 states and 247 transitions. [2024-11-01 03:50:12,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-01 03:50:12,558 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 136 [2024-11-01 03:50:12,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 03:50:12,559 INFO L225 Difference]: With dead ends: 197 [2024-11-01 03:50:12,559 INFO L226 Difference]: Without dead ends: 124 [2024-11-01 03:50:12,560 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-01 03:50:12,560 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 2 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-01 03:50:12,560 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 277 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-01 03:50:12,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2024-11-01 03:50:12,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2024-11-01 03:50:12,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 112 states have (on average 1.1875) internal successors, (133), 112 states have internal predecessors, (133), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-01 03:50:12,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 153 transitions. [2024-11-01 03:50:12,573 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 153 transitions. Word has length 136 [2024-11-01 03:50:12,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 03:50:12,573 INFO L471 AbstractCegarLoop]: Abstraction has 124 states and 153 transitions. [2024-11-01 03:50:12,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 03:50:12,574 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 153 transitions. [2024-11-01 03:50:12,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-01 03:50:12,575 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 03:50:12,576 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 03:50:12,604 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-01 03:50:12,776 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:12,776 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 03:50:12,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 03:50:12,777 INFO L85 PathProgramCache]: Analyzing trace with hash -275664921, now seen corresponding path program 1 times [2024-11-01 03:50:12,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 03:50:12,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [854139833] [2024-11-01 03:50:12,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 03:50:12,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:12,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 03:50:12,779 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-01 03:50:12,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-01 03:50:13,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 03:50:13,798 INFO L255 TraceCheckSpWp]: Trace formula consists of 1576 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-01 03:50:13,803 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 03:50:13,812 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2024-11-01 03:50:13,812 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 03:50:13,855 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2024-11-01 03:50:13,856 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 03:50:13,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [854139833] [2024-11-01 03:50:13,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [854139833] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-01 03:50:13,856 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-01 03:50:13,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-01 03:50:13,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75693188] [2024-11-01 03:50:13,857 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-01 03:50:13,857 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-01 03:50:13,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 03:50:13,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-01 03:50:13,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-01 03:50:13,858 INFO L87 Difference]: Start difference. First operand 124 states and 153 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 03:50:13,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 03:50:13,901 INFO L93 Difference]: Finished difference Result 203 states and 253 transitions. [2024-11-01 03:50:13,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-01 03:50:13,903 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 140 [2024-11-01 03:50:13,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 03:50:13,904 INFO L225 Difference]: With dead ends: 203 [2024-11-01 03:50:13,904 INFO L226 Difference]: Without dead ends: 127 [2024-11-01 03:50:13,905 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-01 03:50:13,905 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 3 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-01 03:50:13,905 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 186 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-01 03:50:13,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2024-11-01 03:50:13,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2024-11-01 03:50:13,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 115 states have (on average 1.182608695652174) internal successors, (136), 115 states have internal predecessors, (136), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-01 03:50:13,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 156 transitions. [2024-11-01 03:50:13,916 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 156 transitions. Word has length 140 [2024-11-01 03:50:13,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 03:50:13,916 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 156 transitions. [2024-11-01 03:50:13,916 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 03:50:13,917 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 156 transitions. [2024-11-01 03:50:13,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-01 03:50:13,940 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 03:50:13,941 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 03:50:13,970 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-01 03:50:14,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:14,141 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 03:50:14,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 03:50:14,142 INFO L85 PathProgramCache]: Analyzing trace with hash -2131001629, now seen corresponding path program 1 times [2024-11-01 03:50:14,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 03:50:14,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2045585553] [2024-11-01 03:50:14,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 03:50:14,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:14,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 03:50:14,144 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-01 03:50:14,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-01 03:50:15,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 03:50:15,222 INFO L255 TraceCheckSpWp]: Trace formula consists of 1588 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-01 03:50:15,226 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 03:50:15,236 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2024-11-01 03:50:15,236 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 03:50:15,286 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2024-11-01 03:50:15,286 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 03:50:15,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2045585553] [2024-11-01 03:50:15,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2045585553] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-01 03:50:15,286 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-01 03:50:15,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-01 03:50:15,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363168052] [2024-11-01 03:50:15,287 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-01 03:50:15,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-01 03:50:15,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 03:50:15,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-01 03:50:15,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-01 03:50:15,288 INFO L87 Difference]: Start difference. First operand 127 states and 156 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 03:50:15,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 03:50:15,346 INFO L93 Difference]: Finished difference Result 209 states and 259 transitions. [2024-11-01 03:50:15,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-01 03:50:15,350 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 144 [2024-11-01 03:50:15,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 03:50:15,351 INFO L225 Difference]: With dead ends: 209 [2024-11-01 03:50:15,351 INFO L226 Difference]: Without dead ends: 130 [2024-11-01 03:50:15,352 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 284 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-01 03:50:15,352 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 3 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-01 03:50:15,352 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 186 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-01 03:50:15,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2024-11-01 03:50:15,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2024-11-01 03:50:15,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 118 states have (on average 1.1779661016949152) internal successors, (139), 118 states have internal predecessors, (139), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-01 03:50:15,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 159 transitions. [2024-11-01 03:50:15,362 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 159 transitions. Word has length 144 [2024-11-01 03:50:15,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 03:50:15,362 INFO L471 AbstractCegarLoop]: Abstraction has 130 states and 159 transitions. [2024-11-01 03:50:15,363 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 03:50:15,363 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 159 transitions. [2024-11-01 03:50:15,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-11-01 03:50:15,364 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 03:50:15,364 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 03:50:15,395 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-01 03:50:15,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:15,565 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 03:50:15,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 03:50:15,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1717534559, now seen corresponding path program 1 times [2024-11-01 03:50:15,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 03:50:15,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1170368332] [2024-11-01 03:50:15,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 03:50:15,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:15,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 03:50:15,567 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-01 03:50:15,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-01 03:50:16,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 03:50:16,705 INFO L255 TraceCheckSpWp]: Trace formula consists of 1600 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-01 03:50:16,710 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 03:50:16,718 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2024-11-01 03:50:16,719 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 03:50:16,757 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2024-11-01 03:50:16,757 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 03:50:16,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1170368332] [2024-11-01 03:50:16,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1170368332] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-01 03:50:16,758 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-01 03:50:16,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-01 03:50:16,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20562230] [2024-11-01 03:50:16,758 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-01 03:50:16,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-01 03:50:16,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 03:50:16,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-01 03:50:16,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-01 03:50:16,760 INFO L87 Difference]: Start difference. First operand 130 states and 159 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 03:50:16,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 03:50:16,799 INFO L93 Difference]: Finished difference Result 215 states and 265 transitions. [2024-11-01 03:50:16,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-01 03:50:16,802 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 148 [2024-11-01 03:50:16,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 03:50:16,803 INFO L225 Difference]: With dead ends: 215 [2024-11-01 03:50:16,803 INFO L226 Difference]: Without dead ends: 133 [2024-11-01 03:50:16,804 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-01 03:50:16,804 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 2 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-01 03:50:16,805 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 277 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-01 03:50:16,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2024-11-01 03:50:16,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2024-11-01 03:50:16,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 121 states have (on average 1.1735537190082646) internal successors, (142), 121 states have internal predecessors, (142), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-01 03:50:16,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 162 transitions. [2024-11-01 03:50:16,815 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 162 transitions. Word has length 148 [2024-11-01 03:50:16,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 03:50:16,815 INFO L471 AbstractCegarLoop]: Abstraction has 133 states and 162 transitions. [2024-11-01 03:50:16,815 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 03:50:16,815 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 162 transitions. [2024-11-01 03:50:16,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-11-01 03:50:16,817 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 03:50:16,817 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 03:50:16,844 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-01 03:50:17,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:17,018 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 03:50:17,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 03:50:17,018 INFO L85 PathProgramCache]: Analyzing trace with hash 143053147, now seen corresponding path program 1 times [2024-11-01 03:50:17,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 03:50:17,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [571161211] [2024-11-01 03:50:17,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 03:50:17,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:17,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 03:50:17,020 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-01 03:50:17,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-01 03:50:18,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 03:50:18,163 INFO L255 TraceCheckSpWp]: Trace formula consists of 1612 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-01 03:50:18,167 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 03:50:18,174 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-11-01 03:50:18,174 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 03:50:18,223 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2024-11-01 03:50:18,223 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 03:50:18,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [571161211] [2024-11-01 03:50:18,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [571161211] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-01 03:50:18,223 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-01 03:50:18,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-01 03:50:18,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960267712] [2024-11-01 03:50:18,224 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-01 03:50:18,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-01 03:50:18,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 03:50:18,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-01 03:50:18,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-01 03:50:18,226 INFO L87 Difference]: Start difference. First operand 133 states and 162 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 03:50:18,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 03:50:18,271 INFO L93 Difference]: Finished difference Result 221 states and 271 transitions. [2024-11-01 03:50:18,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-01 03:50:18,272 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 152 [2024-11-01 03:50:18,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 03:50:18,273 INFO L225 Difference]: With dead ends: 221 [2024-11-01 03:50:18,274 INFO L226 Difference]: Without dead ends: 136 [2024-11-01 03:50:18,274 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 300 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-01 03:50:18,275 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 2 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-01 03:50:18,275 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 277 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-01 03:50:18,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-11-01 03:50:18,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2024-11-01 03:50:18,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 124 states have (on average 1.1693548387096775) internal successors, (145), 124 states have internal predecessors, (145), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-01 03:50:18,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 165 transitions. [2024-11-01 03:50:18,289 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 165 transitions. Word has length 152 [2024-11-01 03:50:18,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 03:50:18,290 INFO L471 AbstractCegarLoop]: Abstraction has 136 states and 165 transitions. [2024-11-01 03:50:18,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 03:50:18,290 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 165 transitions. [2024-11-01 03:50:18,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-01 03:50:18,291 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 03:50:18,292 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 03:50:18,323 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-01 03:50:18,492 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:18,492 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 03:50:18,493 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 03:50:18,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1130195753, now seen corresponding path program 1 times [2024-11-01 03:50:18,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 03:50:18,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1732309597] [2024-11-01 03:50:18,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 03:50:18,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:18,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 03:50:18,495 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-01 03:50:18,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-01 03:50:19,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 03:50:19,739 INFO L255 TraceCheckSpWp]: Trace formula consists of 1624 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-01 03:50:19,744 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 03:50:19,751 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-11-01 03:50:19,752 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 03:50:19,797 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2024-11-01 03:50:19,797 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 03:50:19,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1732309597] [2024-11-01 03:50:19,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1732309597] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-01 03:50:19,798 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-01 03:50:19,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-01 03:50:19,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724876964] [2024-11-01 03:50:19,798 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-01 03:50:19,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-01 03:50:19,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 03:50:19,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-01 03:50:19,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-01 03:50:19,799 INFO L87 Difference]: Start difference. First operand 136 states and 165 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 03:50:19,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 03:50:19,850 INFO L93 Difference]: Finished difference Result 227 states and 277 transitions. [2024-11-01 03:50:19,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-01 03:50:19,852 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 156 [2024-11-01 03:50:19,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 03:50:19,853 INFO L225 Difference]: With dead ends: 227 [2024-11-01 03:50:19,854 INFO L226 Difference]: Without dead ends: 139 [2024-11-01 03:50:19,854 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 308 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-01 03:50:19,854 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 2 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-01 03:50:19,855 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 277 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-01 03:50:19,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2024-11-01 03:50:19,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2024-11-01 03:50:19,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 127 states have (on average 1.1653543307086613) internal successors, (148), 127 states have internal predecessors, (148), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-01 03:50:19,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 168 transitions. [2024-11-01 03:50:19,871 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 168 transitions. Word has length 156 [2024-11-01 03:50:19,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 03:50:19,871 INFO L471 AbstractCegarLoop]: Abstraction has 139 states and 168 transitions. [2024-11-01 03:50:19,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 03:50:19,872 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 168 transitions. [2024-11-01 03:50:19,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-01 03:50:19,874 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 03:50:19,874 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 03:50:19,907 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-01 03:50:20,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:20,075 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 03:50:20,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 03:50:20,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1850468819, now seen corresponding path program 1 times [2024-11-01 03:50:20,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 03:50:20,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [196900552] [2024-11-01 03:50:20,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 03:50:20,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:20,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 03:50:20,077 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-01 03:50:20,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-01 03:50:21,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 03:50:21,382 INFO L255 TraceCheckSpWp]: Trace formula consists of 1636 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-01 03:50:21,392 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 03:50:21,402 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2024-11-01 03:50:21,403 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 03:50:21,446 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-11-01 03:50:21,446 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 03:50:21,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [196900552] [2024-11-01 03:50:21,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [196900552] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-01 03:50:21,447 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-01 03:50:21,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-01 03:50:21,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676791533] [2024-11-01 03:50:21,447 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-01 03:50:21,448 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-01 03:50:21,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 03:50:21,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-01 03:50:21,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-01 03:50:21,449 INFO L87 Difference]: Start difference. First operand 139 states and 168 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 03:50:21,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 03:50:21,497 INFO L93 Difference]: Finished difference Result 233 states and 283 transitions. [2024-11-01 03:50:21,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-01 03:50:21,499 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 160 [2024-11-01 03:50:21,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 03:50:21,501 INFO L225 Difference]: With dead ends: 233 [2024-11-01 03:50:21,501 INFO L226 Difference]: Without dead ends: 142 [2024-11-01 03:50:21,502 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 316 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-01 03:50:21,502 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 3 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-01 03:50:21,503 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 186 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-01 03:50:21,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-11-01 03:50:21,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2024-11-01 03:50:21,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 130 states have (on average 1.1615384615384616) internal successors, (151), 130 states have internal predecessors, (151), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-01 03:50:21,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 171 transitions. [2024-11-01 03:50:21,521 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 171 transitions. Word has length 160 [2024-11-01 03:50:21,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 03:50:21,522 INFO L471 AbstractCegarLoop]: Abstraction has 142 states and 171 transitions. [2024-11-01 03:50:21,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 03:50:21,522 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 171 transitions. [2024-11-01 03:50:21,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-11-01 03:50:21,523 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 03:50:21,524 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 03:50:21,551 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-01 03:50:21,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:21,725 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 03:50:21,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 03:50:21,725 INFO L85 PathProgramCache]: Analyzing trace with hash -914100145, now seen corresponding path program 1 times [2024-11-01 03:50:21,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 03:50:21,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1687203859] [2024-11-01 03:50:21,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 03:50:21,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:21,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 03:50:21,728 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-01 03:50:21,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-01 03:50:23,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 03:50:23,032 INFO L255 TraceCheckSpWp]: Trace formula consists of 1648 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-01 03:50:23,036 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 03:50:23,043 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-11-01 03:50:23,044 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 03:50:23,074 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2024-11-01 03:50:23,075 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 03:50:23,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1687203859] [2024-11-01 03:50:23,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1687203859] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-01 03:50:23,075 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-01 03:50:23,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-01 03:50:23,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105067842] [2024-11-01 03:50:23,075 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-01 03:50:23,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-01 03:50:23,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 03:50:23,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-01 03:50:23,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-01 03:50:23,077 INFO L87 Difference]: Start difference. First operand 142 states and 171 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 03:50:23,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 03:50:23,109 INFO L93 Difference]: Finished difference Result 239 states and 289 transitions. [2024-11-01 03:50:23,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-01 03:50:23,110 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 164 [2024-11-01 03:50:23,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 03:50:23,111 INFO L225 Difference]: With dead ends: 239 [2024-11-01 03:50:23,111 INFO L226 Difference]: Without dead ends: 145 [2024-11-01 03:50:23,112 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-01 03:50:23,112 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 3 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-01 03:50:23,112 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 186 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-01 03:50:23,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2024-11-01 03:50:23,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2024-11-01 03:50:23,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 133 states have (on average 1.1578947368421053) internal successors, (154), 133 states have internal predecessors, (154), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-01 03:50:23,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 174 transitions. [2024-11-01 03:50:23,123 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 174 transitions. Word has length 164 [2024-11-01 03:50:23,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 03:50:23,123 INFO L471 AbstractCegarLoop]: Abstraction has 145 states and 174 transitions. [2024-11-01 03:50:23,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 03:50:23,124 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 174 transitions. [2024-11-01 03:50:23,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-01 03:50:23,125 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 03:50:23,125 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 03:50:23,156 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-01 03:50:23,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:23,326 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 03:50:23,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 03:50:23,326 INFO L85 PathProgramCache]: Analyzing trace with hash -457979829, now seen corresponding path program 1 times [2024-11-01 03:50:23,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 03:50:23,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1518778130] [2024-11-01 03:50:23,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 03:50:23,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:23,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 03:50:23,328 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-01 03:50:23,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-01 03:50:24,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 03:50:24,682 INFO L255 TraceCheckSpWp]: Trace formula consists of 1660 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-01 03:50:24,689 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 03:50:24,702 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2024-11-01 03:50:24,702 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 03:50:24,743 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2024-11-01 03:50:24,743 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 03:50:24,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1518778130] [2024-11-01 03:50:24,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1518778130] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-01 03:50:24,744 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-01 03:50:24,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-01 03:50:24,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118048724] [2024-11-01 03:50:24,744 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-01 03:50:24,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-01 03:50:24,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 03:50:24,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-01 03:50:24,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-01 03:50:24,745 INFO L87 Difference]: Start difference. First operand 145 states and 174 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 03:50:24,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 03:50:24,785 INFO L93 Difference]: Finished difference Result 245 states and 295 transitions. [2024-11-01 03:50:24,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-01 03:50:24,786 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 168 [2024-11-01 03:50:24,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 03:50:24,788 INFO L225 Difference]: With dead ends: 245 [2024-11-01 03:50:24,788 INFO L226 Difference]: Without dead ends: 148 [2024-11-01 03:50:24,788 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 332 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-01 03:50:24,789 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 2 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-01 03:50:24,789 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 277 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-01 03:50:24,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2024-11-01 03:50:24,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2024-11-01 03:50:24,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 136 states have (on average 1.1544117647058822) internal successors, (157), 136 states have internal predecessors, (157), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-01 03:50:24,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 177 transitions. [2024-11-01 03:50:24,800 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 177 transitions. Word has length 168 [2024-11-01 03:50:24,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 03:50:24,801 INFO L471 AbstractCegarLoop]: Abstraction has 148 states and 177 transitions. [2024-11-01 03:50:24,801 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 03:50:24,801 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 177 transitions. [2024-11-01 03:50:24,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-11-01 03:50:24,802 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 03:50:24,802 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 03:50:24,834 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-01 03:50:25,003 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:25,003 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 03:50:25,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 03:50:25,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1789694407, now seen corresponding path program 1 times [2024-11-01 03:50:25,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 03:50:25,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1800069253] [2024-11-01 03:50:25,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 03:50:25,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:25,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 03:50:25,005 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-01 03:50:25,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-01 03:50:26,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 03:50:26,434 INFO L255 TraceCheckSpWp]: Trace formula consists of 1672 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-01 03:50:26,438 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 03:50:26,446 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2024-11-01 03:50:26,446 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 03:50:26,482 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-01 03:50:26,482 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 03:50:26,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1800069253] [2024-11-01 03:50:26,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1800069253] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-01 03:50:26,483 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-01 03:50:26,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-01 03:50:26,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525155083] [2024-11-01 03:50:26,483 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-01 03:50:26,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-01 03:50:26,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 03:50:26,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-01 03:50:26,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-01 03:50:26,485 INFO L87 Difference]: Start difference. First operand 148 states and 177 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 03:50:26,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 03:50:26,522 INFO L93 Difference]: Finished difference Result 251 states and 301 transitions. [2024-11-01 03:50:26,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-01 03:50:26,522 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 172 [2024-11-01 03:50:26,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 03:50:26,524 INFO L225 Difference]: With dead ends: 251 [2024-11-01 03:50:26,524 INFO L226 Difference]: Without dead ends: 151 [2024-11-01 03:50:26,524 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 340 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-01 03:50:26,525 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 2 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-01 03:50:26,525 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 277 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-01 03:50:26,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2024-11-01 03:50:26,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2024-11-01 03:50:26,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 139 states have (on average 1.1510791366906474) internal successors, (160), 139 states have internal predecessors, (160), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-01 03:50:26,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 180 transitions. [2024-11-01 03:50:26,566 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 180 transitions. Word has length 172 [2024-11-01 03:50:26,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 03:50:26,567 INFO L471 AbstractCegarLoop]: Abstraction has 151 states and 180 transitions. [2024-11-01 03:50:26,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 03:50:26,567 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 180 transitions. [2024-11-01 03:50:26,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-01 03:50:26,569 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 03:50:26,569 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 03:50:26,603 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-01 03:50:26,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:26,769 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 03:50:26,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 03:50:26,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1151823043, now seen corresponding path program 1 times [2024-11-01 03:50:26,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 03:50:26,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1279835009] [2024-11-01 03:50:26,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 03:50:26,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:26,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 03:50:26,772 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-01 03:50:26,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-01 03:50:28,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 03:50:28,229 INFO L255 TraceCheckSpWp]: Trace formula consists of 1684 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-01 03:50:28,233 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 03:50:28,239 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2024-11-01 03:50:28,239 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 03:50:28,270 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2024-11-01 03:50:28,270 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 03:50:28,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1279835009] [2024-11-01 03:50:28,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1279835009] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-01 03:50:28,271 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-01 03:50:28,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-01 03:50:28,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680761180] [2024-11-01 03:50:28,271 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-01 03:50:28,272 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-01 03:50:28,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 03:50:28,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-01 03:50:28,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-01 03:50:28,273 INFO L87 Difference]: Start difference. First operand 151 states and 180 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 03:50:28,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 03:50:28,306 INFO L93 Difference]: Finished difference Result 257 states and 307 transitions. [2024-11-01 03:50:28,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-01 03:50:28,306 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 176 [2024-11-01 03:50:28,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 03:50:28,308 INFO L225 Difference]: With dead ends: 257 [2024-11-01 03:50:28,308 INFO L226 Difference]: Without dead ends: 154 [2024-11-01 03:50:28,308 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 348 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-01 03:50:28,308 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 3 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-01 03:50:28,309 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 186 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-01 03:50:28,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2024-11-01 03:50:28,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2024-11-01 03:50:28,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 142 states have (on average 1.147887323943662) internal successors, (163), 142 states have internal predecessors, (163), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-01 03:50:28,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 183 transitions. [2024-11-01 03:50:28,320 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 183 transitions. Word has length 176 [2024-11-01 03:50:28,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 03:50:28,320 INFO L471 AbstractCegarLoop]: Abstraction has 154 states and 183 transitions. [2024-11-01 03:50:28,321 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 03:50:28,321 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 183 transitions. [2024-11-01 03:50:28,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-11-01 03:50:28,322 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 03:50:28,322 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 03:50:28,347 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-01 03:50:28,522 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:28,523 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 03:50:28,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 03:50:28,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1002079937, now seen corresponding path program 1 times [2024-11-01 03:50:28,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 03:50:28,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1358079333] [2024-11-01 03:50:28,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 03:50:28,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:28,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 03:50:28,525 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-01 03:50:28,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-01 03:50:30,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 03:50:30,084 INFO L255 TraceCheckSpWp]: Trace formula consists of 1696 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-01 03:50:30,088 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 03:50:30,100 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2024-11-01 03:50:30,100 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 03:50:30,140 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2024-11-01 03:50:30,140 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 03:50:30,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1358079333] [2024-11-01 03:50:30,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1358079333] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-01 03:50:30,141 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-01 03:50:30,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-01 03:50:30,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244978815] [2024-11-01 03:50:30,141 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-01 03:50:30,142 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-01 03:50:30,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 03:50:30,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-01 03:50:30,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-01 03:50:30,143 INFO L87 Difference]: Start difference. First operand 154 states and 183 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 03:50:30,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 03:50:30,185 INFO L93 Difference]: Finished difference Result 263 states and 313 transitions. [2024-11-01 03:50:30,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-01 03:50:30,186 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 180 [2024-11-01 03:50:30,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 03:50:30,188 INFO L225 Difference]: With dead ends: 263 [2024-11-01 03:50:30,188 INFO L226 Difference]: Without dead ends: 157 [2024-11-01 03:50:30,188 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 356 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-01 03:50:30,189 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 2 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-01 03:50:30,189 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 277 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-01 03:50:30,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2024-11-01 03:50:30,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2024-11-01 03:50:30,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 145 states have (on average 1.1448275862068966) internal successors, (166), 145 states have internal predecessors, (166), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-01 03:50:30,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 186 transitions. [2024-11-01 03:50:30,200 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 186 transitions. Word has length 180 [2024-11-01 03:50:30,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 03:50:30,200 INFO L471 AbstractCegarLoop]: Abstraction has 157 states and 186 transitions. [2024-11-01 03:50:30,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 03:50:30,201 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 186 transitions. [2024-11-01 03:50:30,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2024-11-01 03:50:30,201 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 03:50:30,202 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 03:50:30,231 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-01 03:50:30,402 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:30,402 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 03:50:30,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 03:50:30,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1301272379, now seen corresponding path program 1 times [2024-11-01 03:50:30,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 03:50:30,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [182392403] [2024-11-01 03:50:30,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 03:50:30,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:30,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 03:50:30,404 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-01 03:50:30,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-01 03:50:31,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 03:50:31,957 INFO L255 TraceCheckSpWp]: Trace formula consists of 1708 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-01 03:50:31,962 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 03:50:31,992 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 112 proven. 4 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2024-11-01 03:50:31,993 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 03:50:32,102 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2024-11-01 03:50:32,103 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 03:50:32,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [182392403] [2024-11-01 03:50:32,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [182392403] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-01 03:50:32,103 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-01 03:50:32,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 9 [2024-11-01 03:50:32,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157999528] [2024-11-01 03:50:32,104 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-01 03:50:32,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-01 03:50:32,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 03:50:32,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-01 03:50:32,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-11-01 03:50:32,105 INFO L87 Difference]: Start difference. First operand 157 states and 186 transitions. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 03:50:32,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 03:50:32,216 INFO L93 Difference]: Finished difference Result 274 states and 326 transitions. [2024-11-01 03:50:32,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-01 03:50:32,217 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 184 [2024-11-01 03:50:32,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 03:50:32,219 INFO L225 Difference]: With dead ends: 274 [2024-11-01 03:50:32,219 INFO L226 Difference]: Without dead ends: 165 [2024-11-01 03:50:32,219 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 359 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-11-01 03:50:32,220 INFO L432 NwaCegarLoop]: 94 mSDtfsCounter, 4 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-01 03:50:32,220 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 367 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-01 03:50:32,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2024-11-01 03:50:32,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2024-11-01 03:50:32,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 153 states have (on average 1.1437908496732025) internal successors, (175), 153 states have internal predecessors, (175), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-01 03:50:32,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 195 transitions. [2024-11-01 03:50:32,261 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 195 transitions. Word has length 184 [2024-11-01 03:50:32,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 03:50:32,261 INFO L471 AbstractCegarLoop]: Abstraction has 165 states and 195 transitions. [2024-11-01 03:50:32,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 03:50:32,262 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 195 transitions. [2024-11-01 03:50:32,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2024-11-01 03:50:32,263 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 03:50:32,263 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 03:50:32,298 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-01 03:50:32,463 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:32,464 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 03:50:32,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 03:50:32,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1688806601, now seen corresponding path program 2 times [2024-11-01 03:50:32,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 03:50:32,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1939191819] [2024-11-01 03:50:32,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 03:50:32,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:32,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 03:50:32,467 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-01 03:50:32,467 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-01 03:50:34,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 03:50:34,152 INFO L255 TraceCheckSpWp]: Trace formula consists of 1720 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-01 03:50:34,156 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 03:50:34,178 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 112 proven. 4 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2024-11-01 03:50:34,178 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 03:50:34,258 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2024-11-01 03:50:34,259 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 03:50:34,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1939191819] [2024-11-01 03:50:34,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1939191819] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-01 03:50:34,259 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-01 03:50:34,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 9 [2024-11-01 03:50:34,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205863739] [2024-11-01 03:50:34,259 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-01 03:50:34,260 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-01 03:50:34,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 03:50:34,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-01 03:50:34,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-11-01 03:50:34,260 INFO L87 Difference]: Start difference. First operand 165 states and 195 transitions. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 03:50:34,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 03:50:34,346 INFO L93 Difference]: Finished difference Result 290 states and 344 transitions. [2024-11-01 03:50:34,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-01 03:50:34,347 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 188 [2024-11-01 03:50:34,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 03:50:34,348 INFO L225 Difference]: With dead ends: 290 [2024-11-01 03:50:34,348 INFO L226 Difference]: Without dead ends: 173 [2024-11-01 03:50:34,348 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 367 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-11-01 03:50:34,349 INFO L432 NwaCegarLoop]: 94 mSDtfsCounter, 4 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-01 03:50:34,349 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 458 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-01 03:50:34,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2024-11-01 03:50:34,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2024-11-01 03:50:34,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 161 states have (on average 1.1428571428571428) internal successors, (184), 161 states have internal predecessors, (184), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-01 03:50:34,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 204 transitions. [2024-11-01 03:50:34,359 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 204 transitions. Word has length 188 [2024-11-01 03:50:34,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 03:50:34,359 INFO L471 AbstractCegarLoop]: Abstraction has 173 states and 204 transitions. [2024-11-01 03:50:34,359 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 03:50:34,359 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 204 transitions. [2024-11-01 03:50:34,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2024-11-01 03:50:34,360 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 03:50:34,360 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 03:50:34,385 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-01 03:50:34,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:34,560 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 03:50:34,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 03:50:34,561 INFO L85 PathProgramCache]: Analyzing trace with hash 577535795, now seen corresponding path program 3 times [2024-11-01 03:50:34,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 03:50:34,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [417887374] [2024-11-01 03:50:34,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 03:50:34,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:34,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 03:50:34,563 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-01 03:50:34,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-01 03:50:36,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 03:50:36,280 INFO L255 TraceCheckSpWp]: Trace formula consists of 1732 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-01 03:50:36,284 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 03:50:36,300 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 112 proven. 4 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2024-11-01 03:50:36,301 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 03:50:36,381 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2024-11-01 03:50:36,382 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 03:50:36,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [417887374] [2024-11-01 03:50:36,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [417887374] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-01 03:50:36,382 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-01 03:50:36,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 9 [2024-11-01 03:50:36,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616703816] [2024-11-01 03:50:36,382 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-01 03:50:36,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-01 03:50:36,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 03:50:36,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-01 03:50:36,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-11-01 03:50:36,384 INFO L87 Difference]: Start difference. First operand 173 states and 204 transitions. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 03:50:36,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 03:50:36,473 INFO L93 Difference]: Finished difference Result 306 states and 362 transitions. [2024-11-01 03:50:36,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-01 03:50:36,475 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 192 [2024-11-01 03:50:36,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 03:50:36,476 INFO L225 Difference]: With dead ends: 306 [2024-11-01 03:50:36,476 INFO L226 Difference]: Without dead ends: 181 [2024-11-01 03:50:36,476 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 375 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-11-01 03:50:36,477 INFO L432 NwaCegarLoop]: 94 mSDtfsCounter, 3 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-01 03:50:36,477 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 640 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-01 03:50:36,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2024-11-01 03:50:36,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2024-11-01 03:50:36,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 169 states have (on average 1.1420118343195267) internal successors, (193), 169 states have internal predecessors, (193), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-01 03:50:36,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 213 transitions. [2024-11-01 03:50:36,487 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 213 transitions. Word has length 192 [2024-11-01 03:50:36,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 03:50:36,487 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 213 transitions. [2024-11-01 03:50:36,488 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 03:50:36,488 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 213 transitions. [2024-11-01 03:50:36,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-11-01 03:50:36,489 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 03:50:36,489 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 03:50:36,518 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-11-01 03:50:36,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:36,690 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 03:50:36,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 03:50:36,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1688235089, now seen corresponding path program 4 times [2024-11-01 03:50:36,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 03:50:36,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1112280706] [2024-11-01 03:50:36,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 03:50:36,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:36,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 03:50:36,692 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-01 03:50:36,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-01 03:50:38,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 03:50:38,426 INFO L255 TraceCheckSpWp]: Trace formula consists of 1744 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-01 03:50:38,430 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 03:50:38,452 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 112 proven. 4 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2024-11-01 03:50:38,453 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 03:50:38,522 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked. [2024-11-01 03:50:38,522 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 03:50:38,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1112280706] [2024-11-01 03:50:38,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1112280706] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-01 03:50:38,523 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-01 03:50:38,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 9 [2024-11-01 03:50:38,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579635712] [2024-11-01 03:50:38,523 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-01 03:50:38,524 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-01 03:50:38,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 03:50:38,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-01 03:50:38,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-11-01 03:50:38,525 INFO L87 Difference]: Start difference. First operand 181 states and 213 transitions. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 03:50:38,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 03:50:38,666 INFO L93 Difference]: Finished difference Result 322 states and 380 transitions. [2024-11-01 03:50:38,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-01 03:50:38,667 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 196 [2024-11-01 03:50:38,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 03:50:38,669 INFO L225 Difference]: With dead ends: 322 [2024-11-01 03:50:38,669 INFO L226 Difference]: Without dead ends: 189 [2024-11-01 03:50:38,670 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 383 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-11-01 03:50:38,670 INFO L432 NwaCegarLoop]: 94 mSDtfsCounter, 4 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-01 03:50:38,670 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 458 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-01 03:50:38,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2024-11-01 03:50:38,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2024-11-01 03:50:38,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 177 states have (on average 1.1412429378531073) internal successors, (202), 177 states have internal predecessors, (202), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-01 03:50:38,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 222 transitions. [2024-11-01 03:50:38,684 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 222 transitions. Word has length 196 [2024-11-01 03:50:38,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 03:50:38,685 INFO L471 AbstractCegarLoop]: Abstraction has 189 states and 222 transitions. [2024-11-01 03:50:38,685 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 03:50:38,685 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 222 transitions. [2024-11-01 03:50:38,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2024-11-01 03:50:38,686 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 03:50:38,686 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 03:50:38,725 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-11-01 03:50:38,887 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:38,887 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 03:50:38,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 03:50:38,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1087271381, now seen corresponding path program 5 times [2024-11-01 03:50:38,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 03:50:38,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [753955716] [2024-11-01 03:50:38,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 03:50:38,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:38,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 03:50:38,889 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-01 03:50:38,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-01 03:50:40,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 03:50:40,696 INFO L255 TraceCheckSpWp]: Trace formula consists of 1756 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-01 03:50:40,701 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 03:50:40,723 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 112 proven. 4 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-11-01 03:50:40,724 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 03:50:40,791 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 320 trivial. 0 not checked. [2024-11-01 03:50:40,792 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 03:50:40,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [753955716] [2024-11-01 03:50:40,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [753955716] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-01 03:50:40,792 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-01 03:50:40,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 9 [2024-11-01 03:50:40,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294487292] [2024-11-01 03:50:40,793 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-01 03:50:40,793 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-01 03:50:40,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 03:50:40,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-01 03:50:40,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-11-01 03:50:40,794 INFO L87 Difference]: Start difference. First operand 189 states and 222 transitions. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 03:50:40,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 03:50:40,885 INFO L93 Difference]: Finished difference Result 338 states and 398 transitions. [2024-11-01 03:50:40,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-01 03:50:40,885 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 200 [2024-11-01 03:50:40,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 03:50:40,886 INFO L225 Difference]: With dead ends: 338 [2024-11-01 03:50:40,887 INFO L226 Difference]: Without dead ends: 197 [2024-11-01 03:50:40,887 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 391 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-11-01 03:50:40,888 INFO L432 NwaCegarLoop]: 94 mSDtfsCounter, 4 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-01 03:50:40,888 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 458 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-01 03:50:40,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2024-11-01 03:50:40,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2024-11-01 03:50:40,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 185 states have (on average 1.1405405405405404) internal successors, (211), 185 states have internal predecessors, (211), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-01 03:50:40,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 231 transitions. [2024-11-01 03:50:40,904 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 231 transitions. Word has length 200 [2024-11-01 03:50:40,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 03:50:40,905 INFO L471 AbstractCegarLoop]: Abstraction has 197 states and 231 transitions. [2024-11-01 03:50:40,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 03:50:40,905 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 231 transitions. [2024-11-01 03:50:40,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-11-01 03:50:40,907 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 03:50:40,907 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 03:50:40,949 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-11-01 03:50:41,108 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:41,108 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 03:50:41,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 03:50:41,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1775053223, now seen corresponding path program 6 times [2024-11-01 03:50:41,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 03:50:41,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [936086870] [2024-11-01 03:50:41,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 03:50:41,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:41,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 03:50:41,110 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-01 03:50:41,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-01 03:50:42,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 03:50:42,938 INFO L255 TraceCheckSpWp]: Trace formula consists of 1768 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-01 03:50:42,942 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 03:50:43,011 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 112 proven. 4 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2024-11-01 03:50:43,011 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 03:50:43,089 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 332 trivial. 0 not checked. [2024-11-01 03:50:43,090 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 03:50:43,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [936086870] [2024-11-01 03:50:43,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [936086870] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-01 03:50:43,090 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-01 03:50:43,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 9 [2024-11-01 03:50:43,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435422177] [2024-11-01 03:50:43,090 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-01 03:50:43,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-01 03:50:43,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 03:50:43,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-01 03:50:43,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-11-01 03:50:43,092 INFO L87 Difference]: Start difference. First operand 197 states and 231 transitions. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 03:50:43,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 03:50:43,176 INFO L93 Difference]: Finished difference Result 354 states and 416 transitions. [2024-11-01 03:50:43,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-01 03:50:43,177 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 204 [2024-11-01 03:50:43,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 03:50:43,180 INFO L225 Difference]: With dead ends: 354 [2024-11-01 03:50:43,180 INFO L226 Difference]: Without dead ends: 205 [2024-11-01 03:50:43,181 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 399 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-11-01 03:50:43,181 INFO L432 NwaCegarLoop]: 94 mSDtfsCounter, 3 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-01 03:50:43,182 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 458 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-01 03:50:43,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2024-11-01 03:50:43,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2024-11-01 03:50:43,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 193 states have (on average 1.1398963730569949) internal successors, (220), 193 states have internal predecessors, (220), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-01 03:50:43,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 240 transitions. [2024-11-01 03:50:43,197 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 240 transitions. Word has length 204 [2024-11-01 03:50:43,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 03:50:43,197 INFO L471 AbstractCegarLoop]: Abstraction has 205 states and 240 transitions. [2024-11-01 03:50:43,197 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 03:50:43,197 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 240 transitions. [2024-11-01 03:50:43,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2024-11-01 03:50:43,198 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 03:50:43,199 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 03:50:43,236 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-11-01 03:50:43,399 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:43,399 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 03:50:43,400 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 03:50:43,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1102539101, now seen corresponding path program 7 times [2024-11-01 03:50:43,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 03:50:43,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [380819524] [2024-11-01 03:50:43,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 03:50:43,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:43,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 03:50:43,401 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-01 03:50:43,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-01 03:50:45,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 03:50:45,294 INFO L255 TraceCheckSpWp]: Trace formula consists of 1780 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-01 03:50:45,299 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 03:50:45,315 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 112 proven. 4 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2024-11-01 03:50:45,315 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 03:50:45,387 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 344 trivial. 0 not checked. [2024-11-01 03:50:45,387 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 03:50:45,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [380819524] [2024-11-01 03:50:45,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [380819524] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-01 03:50:45,388 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-01 03:50:45,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 9 [2024-11-01 03:50:45,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125290249] [2024-11-01 03:50:45,388 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-01 03:50:45,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-01 03:50:45,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 03:50:45,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-01 03:50:45,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-11-01 03:50:45,389 INFO L87 Difference]: Start difference. First operand 205 states and 240 transitions. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 03:50:45,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 03:50:45,504 INFO L93 Difference]: Finished difference Result 370 states and 434 transitions. [2024-11-01 03:50:45,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-01 03:50:45,505 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 208 [2024-11-01 03:50:45,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 03:50:45,507 INFO L225 Difference]: With dead ends: 370 [2024-11-01 03:50:45,507 INFO L226 Difference]: Without dead ends: 213 [2024-11-01 03:50:45,508 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 407 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-11-01 03:50:45,511 INFO L432 NwaCegarLoop]: 94 mSDtfsCounter, 4 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-01 03:50:45,511 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 549 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-01 03:50:45,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2024-11-01 03:50:45,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2024-11-01 03:50:45,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 201 states have (on average 1.1393034825870647) internal successors, (229), 201 states have internal predecessors, (229), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-01 03:50:45,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 249 transitions. [2024-11-01 03:50:45,529 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 249 transitions. Word has length 208 [2024-11-01 03:50:45,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 03:50:45,529 INFO L471 AbstractCegarLoop]: Abstraction has 213 states and 249 transitions. [2024-11-01 03:50:45,529 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 03:50:45,529 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 249 transitions. [2024-11-01 03:50:45,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2024-11-01 03:50:45,533 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 03:50:45,533 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 03:50:45,573 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-11-01 03:50:45,733 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:45,733 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 03:50:45,734 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 03:50:45,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1620527841, now seen corresponding path program 8 times [2024-11-01 03:50:45,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 03:50:45,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [500516056] [2024-11-01 03:50:45,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 03:50:45,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:45,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 03:50:45,736 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-01 03:50:45,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-01 03:50:47,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 03:50:47,704 INFO L255 TraceCheckSpWp]: Trace formula consists of 1792 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-01 03:50:47,708 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 03:50:47,728 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 112 proven. 4 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2024-11-01 03:50:47,728 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 03:50:47,799 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 356 trivial. 0 not checked. [2024-11-01 03:50:47,800 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 03:50:47,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [500516056] [2024-11-01 03:50:47,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [500516056] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-01 03:50:47,800 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-01 03:50:47,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 9 [2024-11-01 03:50:47,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580006613] [2024-11-01 03:50:47,800 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-01 03:50:47,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-01 03:50:47,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 03:50:47,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-01 03:50:47,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-11-01 03:50:47,802 INFO L87 Difference]: Start difference. First operand 213 states and 249 transitions. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 03:50:47,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 03:50:47,918 INFO L93 Difference]: Finished difference Result 386 states and 452 transitions. [2024-11-01 03:50:47,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-01 03:50:47,919 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 212 [2024-11-01 03:50:47,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 03:50:47,921 INFO L225 Difference]: With dead ends: 386 [2024-11-01 03:50:47,921 INFO L226 Difference]: Without dead ends: 221 [2024-11-01 03:50:47,922 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 415 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-11-01 03:50:47,923 INFO L432 NwaCegarLoop]: 94 mSDtfsCounter, 4 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-01 03:50:47,923 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 549 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-01 03:50:47,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2024-11-01 03:50:47,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2024-11-01 03:50:47,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 209 states have (on average 1.138755980861244) internal successors, (238), 209 states have internal predecessors, (238), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-01 03:50:47,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 258 transitions. [2024-11-01 03:50:47,943 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 258 transitions. Word has length 212 [2024-11-01 03:50:47,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 03:50:47,943 INFO L471 AbstractCegarLoop]: Abstraction has 221 states and 258 transitions. [2024-11-01 03:50:47,943 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 03:50:47,943 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 258 transitions. [2024-11-01 03:50:47,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2024-11-01 03:50:47,944 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 03:50:47,944 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 03:50:47,972 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-11-01 03:50:48,144 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:48,145 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 03:50:48,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 03:50:48,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1868237669, now seen corresponding path program 9 times [2024-11-01 03:50:48,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 03:50:48,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1756247614] [2024-11-01 03:50:48,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 03:50:48,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:48,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 03:50:48,147 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-01 03:50:48,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-01 03:50:50,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 03:50:50,250 INFO L255 TraceCheckSpWp]: Trace formula consists of 1804 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-01 03:50:50,256 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 03:50:50,278 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 112 proven. 4 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2024-11-01 03:50:50,278 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 03:50:50,338 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked. [2024-11-01 03:50:50,339 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 03:50:50,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1756247614] [2024-11-01 03:50:50,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1756247614] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-01 03:50:50,339 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-01 03:50:50,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 9 [2024-11-01 03:50:50,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855485343] [2024-11-01 03:50:50,339 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-01 03:50:50,339 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-01 03:50:50,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 03:50:50,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-01 03:50:50,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-11-01 03:50:50,340 INFO L87 Difference]: Start difference. First operand 221 states and 258 transitions. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 03:50:50,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 03:50:50,414 INFO L93 Difference]: Finished difference Result 402 states and 470 transitions. [2024-11-01 03:50:50,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-01 03:50:50,415 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 216 [2024-11-01 03:50:50,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 03:50:50,417 INFO L225 Difference]: With dead ends: 402 [2024-11-01 03:50:50,417 INFO L226 Difference]: Without dead ends: 229 [2024-11-01 03:50:50,418 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 423 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-11-01 03:50:50,418 INFO L432 NwaCegarLoop]: 94 mSDtfsCounter, 4 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-01 03:50:50,419 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 367 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-01 03:50:50,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2024-11-01 03:50:50,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2024-11-01 03:50:50,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 217 states have (on average 1.1382488479262673) internal successors, (247), 217 states have internal predecessors, (247), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-01 03:50:50,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 267 transitions. [2024-11-01 03:50:50,437 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 267 transitions. Word has length 216 [2024-11-01 03:50:50,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 03:50:50,438 INFO L471 AbstractCegarLoop]: Abstraction has 229 states and 267 transitions. [2024-11-01 03:50:50,438 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 03:50:50,438 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 267 transitions. [2024-11-01 03:50:50,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2024-11-01 03:50:50,440 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 03:50:50,440 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 03:50:50,477 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2024-11-01 03:50:50,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:50,641 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 03:50:50,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 03:50:50,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1664465769, now seen corresponding path program 10 times [2024-11-01 03:50:50,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 03:50:50,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [682760118] [2024-11-01 03:50:50,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 03:50:50,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:50,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 03:50:50,644 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-01 03:50:50,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-01 03:50:52,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 03:50:52,769 INFO L255 TraceCheckSpWp]: Trace formula consists of 1816 conjuncts, 89 conjuncts are in the unsatisfiable core [2024-11-01 03:50:52,782 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 03:50:55,109 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 36 proven. 28 refuted. 0 times theorem prover too weak. 332 trivial. 0 not checked. [2024-11-01 03:50:55,110 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 03:51:20,295 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 39 proven. 25 refuted. 0 times theorem prover too weak. 332 trivial. 0 not checked. [2024-11-01 03:51:20,296 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 03:51:20,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [682760118] [2024-11-01 03:51:20,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [682760118] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-01 03:51:20,296 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-01 03:51:20,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 30 [2024-11-01 03:51:20,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362159454] [2024-11-01 03:51:20,296 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-01 03:51:20,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-01 03:51:20,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 03:51:20,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-01 03:51:20,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=744, Unknown=3, NotChecked=0, Total=870 [2024-11-01 03:51:20,298 INFO L87 Difference]: Start difference. First operand 229 states and 267 transitions. Second operand has 30 states, 26 states have (on average 7.3076923076923075) internal successors, (190), 27 states have internal predecessors, (190), 8 states have call successors, (20), 1 states have call predecessors, (20), 2 states have return successors, (20), 8 states have call predecessors, (20), 8 states have call successors, (20) [2024-11-01 03:51:21,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 03:51:21,978 INFO L93 Difference]: Finished difference Result 452 states and 526 transitions. [2024-11-01 03:51:21,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-01 03:51:21,979 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 26 states have (on average 7.3076923076923075) internal successors, (190), 27 states have internal predecessors, (190), 8 states have call successors, (20), 1 states have call predecessors, (20), 2 states have return successors, (20), 8 states have call predecessors, (20), 8 states have call successors, (20) Word has length 220 [2024-11-01 03:51:21,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 03:51:21,982 INFO L225 Difference]: With dead ends: 452 [2024-11-01 03:51:21,982 INFO L226 Difference]: Without dead ends: 450 [2024-11-01 03:51:21,984 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 447 GetRequests, 410 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 15.0s TimeCoverageRelationStatistics Valid=233, Invalid=1246, Unknown=3, NotChecked=0, Total=1482 [2024-11-01 03:51:21,985 INFO L432 NwaCegarLoop]: 100 mSDtfsCounter, 268 mSDsluCounter, 1532 mSDsCounter, 0 mSdLazyCounter, 677 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 1632 SdHoareTripleChecker+Invalid, 685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-01 03:51:21,985 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [274 Valid, 1632 Invalid, 685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 677 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-01 03:51:21,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2024-11-01 03:51:22,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 404. [2024-11-01 03:51:22,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 387 states have (on average 1.1395348837209303) internal successors, (441), 387 states have internal predecessors, (441), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-01 03:51:22,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 471 transitions. [2024-11-01 03:51:22,030 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 471 transitions. Word has length 220 [2024-11-01 03:51:22,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 03:51:22,031 INFO L471 AbstractCegarLoop]: Abstraction has 404 states and 471 transitions. [2024-11-01 03:51:22,031 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 26 states have (on average 7.3076923076923075) internal successors, (190), 27 states have internal predecessors, (190), 8 states have call successors, (20), 1 states have call predecessors, (20), 2 states have return successors, (20), 8 states have call predecessors, (20), 8 states have call successors, (20) [2024-11-01 03:51:22,031 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 471 transitions. [2024-11-01 03:51:22,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2024-11-01 03:51:22,035 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 03:51:22,036 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 15, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 03:51:22,081 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2024-11-01 03:51:22,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:51:22,237 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 03:51:22,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 03:51:22,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1966397108, now seen corresponding path program 11 times [2024-11-01 03:51:22,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 03:51:22,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1686859497] [2024-11-01 03:51:22,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 03:51:22,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:51:22,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 03:51:22,240 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-01 03:51:22,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-01 03:51:25,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 03:51:25,520 INFO L255 TraceCheckSpWp]: Trace formula consists of 3165 conjuncts, 294 conjuncts are in the unsatisfiable core [2024-11-01 03:51:25,550 INFO L278 TraceCheckSpWp]: Computing forward predicates...