/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-b75d321-m [2024-11-04 15:19:04,239 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-04 15:19:04,312 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf [2024-11-04 15:19:04,316 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-04 15:19:04,316 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-04 15:19:04,345 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-04 15:19:04,345 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-04 15:19:04,346 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-04 15:19:04,347 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-04 15:19:04,347 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-04 15:19:04,347 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-04 15:19:04,348 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-04 15:19:04,348 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-04 15:19:04,348 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-04 15:19:04,349 INFO L153 SettingsManager]: * Use SBE=true [2024-11-04 15:19:04,349 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-04 15:19:04,349 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-04 15:19:04,350 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-04 15:19:04,350 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-04 15:19:04,350 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-04 15:19:04,350 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-04 15:19:04,351 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-04 15:19:04,351 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-04 15:19:04,352 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-04 15:19:04,352 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-04 15:19:04,352 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-04 15:19:04,352 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-04 15:19:04,353 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-04 15:19:04,353 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-04 15:19:04,353 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-04 15:19:04,353 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-04 15:19:04,354 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-04 15:19:04,354 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-04 15:19:04,354 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-04 15:19:04,354 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-04 15:19:04,355 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-04 15:19:04,355 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-04 15:19:04,355 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-04 15:19:04,355 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-04 15:19:04,355 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-04 15:19:04,356 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-04 15:19:04,356 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:19:04,588 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-04 15:19:04,612 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-04 15:19:04,614 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-04 15:19:04,615 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-04 15:19:04,616 INFO L274 PluginConnector]: CDTParser initialized [2024-11-04 15:19:04,617 INFO L431 ainManager$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 [2024-11-04 15:19:05,961 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-04 15:19:06,207 INFO L384 CDTParser]: Found 1 translation units. [2024-11-04 15:19:06,207 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-array/btor2c-lazyMod.safe_linked_list_fifo_n2d4.c [2024-11-04 15:19:06,223 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5a5632ff/85c5c3288a1e4554b380f8d12a03d141/FLAGe67ad6e0f [2024-11-04 15:19:06,238 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5a5632ff/85c5c3288a1e4554b380f8d12a03d141 [2024-11-04 15:19:06,241 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-04 15:19:06,242 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-04 15:19:06,243 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-04 15:19:06,243 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-04 15:19:06,247 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-04 15:19:06,247 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 03:19:06" (1/1) ... [2024-11-04 15:19:06,248 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b8f6f0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:19:06, skipping insertion in model container [2024-11-04 15:19:06,248 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 03:19:06" (1/1) ... [2024-11-04 15:19:06,301 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-04 15:19:06,489 WARN L250 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] [2024-11-04 15:19:06,809 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-04 15:19:06,828 INFO L200 MainTranslator]: Completed pre-run [2024-11-04 15:19:06,838 WARN L250 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] [2024-11-04 15:19:06,957 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-04 15:19:06,973 INFO L204 MainTranslator]: Completed translation [2024-11-04 15:19:06,975 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:19:06 WrapperNode [2024-11-04 15:19:06,975 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-04 15:19:06,976 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-04 15:19:06,976 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-04 15:19:06,976 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-04 15:19:06,982 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:19:06" (1/1) ... [2024-11-04 15:19:07,031 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:19:06" (1/1) ... [2024-11-04 15:19:07,112 INFO L138 Inliner]: procedures = 18, calls = 107, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1594 [2024-11-04 15:19:07,113 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-04 15:19:07,114 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-04 15:19:07,114 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-04 15:19:07,115 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-04 15:19:07,124 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:19:06" (1/1) ... [2024-11-04 15:19:07,124 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:19:06" (1/1) ... [2024-11-04 15:19:07,142 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:19:06" (1/1) ... [2024-11-04 15:19:07,206 INFO L175 MemorySlicer]: Split 63 memory accesses to 4 slices as follows [2, 24, 29, 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, 12, 14, 4]. [2024-11-04 15:19:07,206 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:19:06" (1/1) ... [2024-11-04 15:19:07,206 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:19:06" (1/1) ... [2024-11-04 15:19:07,246 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:19:06" (1/1) ... [2024-11-04 15:19:07,252 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:19:06" (1/1) ... [2024-11-04 15:19:07,257 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:19:06" (1/1) ... [2024-11-04 15:19:07,264 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:19:06" (1/1) ... [2024-11-04 15:19:07,275 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-04 15:19:07,276 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-04 15:19:07,276 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-04 15:19:07,276 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-04 15:19:07,276 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:19:06" (1/1) ... [2024-11-04 15:19:07,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-04 15:19:07,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 15:19:07,309 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) [2024-11-04 15:19:07,315 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 [2024-11-04 15:19:07,338 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-04 15:19:07,338 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2024-11-04 15:19:07,338 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2024-11-04 15:19:07,338 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2024-11-04 15:19:07,339 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#3 [2024-11-04 15:19:07,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-04 15:19:07,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-04 15:19:07,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-04 15:19:07,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2024-11-04 15:19:07,339 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-04 15:19:07,339 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-04 15:19:07,339 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-04 15:19:07,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-04 15:19:07,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-04 15:19:07,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0 [2024-11-04 15:19:07,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#1 [2024-11-04 15:19:07,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#2 [2024-11-04 15:19:07,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#3 [2024-11-04 15:19:07,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-04 15:19:07,614 INFO L238 CfgBuilder]: Building ICFG [2024-11-04 15:19:07,616 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-04 15:19:08,773 INFO L? ?]: Removed 1019 outVars from TransFormulas that were not future-live. [2024-11-04 15:19:08,773 INFO L287 CfgBuilder]: Performing block encoding [2024-11-04 15:19:08,787 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-04 15:19:08,787 INFO L316 CfgBuilder]: Removed 19 assume(true) statements. [2024-11-04 15:19:08,788 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 03:19:08 BoogieIcfgContainer [2024-11-04 15:19:08,788 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-04 15:19:08,790 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-04 15:19:08,790 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-04 15:19:08,794 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-04 15:19:08,794 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.11 03:19:06" (1/3) ... [2024-11-04 15:19:08,794 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3754298d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 03:19:08, skipping insertion in model container [2024-11-04 15:19:08,795 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:19:06" (2/3) ... [2024-11-04 15:19:08,795 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3754298d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 03:19:08, skipping insertion in model container [2024-11-04 15:19:08,795 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 03:19:08" (3/3) ... [2024-11-04 15:19:08,796 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.safe_linked_list_fifo_n2d4.c [2024-11-04 15:19:08,809 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-04 15:19:08,810 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-04 15:19:08,859 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-04 15:19:08,865 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;@67b45546, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-04 15:19:08,865 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-04 15:19:08,868 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) [2024-11-04 15:19:08,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-04 15:19:08,875 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 15:19:08,876 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] [2024-11-04 15:19:08,876 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 15:19:08,880 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 15:19:08,880 INFO L85 PathProgramCache]: Analyzing trace with hash -958431594, now seen corresponding path program 1 times [2024-11-04 15:19:08,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 15:19:08,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1277466503] [2024-11-04 15:19:08,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 15:19:08,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:19:08,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 15:19:08,890 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) [2024-11-04 15:19:08,891 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-04 15:19:09,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 15:19:09,462 INFO L255 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-04 15:19:09,474 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 15:19:09,499 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-04 15:19:09,500 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 15:19:09,537 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-04 15:19:09,539 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 15:19:09,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1277466503] [2024-11-04 15:19:09,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1277466503] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-04 15:19:09,540 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-04 15:19:09,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2024-11-04 15:19:09,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912421874] [2024-11-04 15:19:09,543 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-04 15:19:09,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-04 15:19:09,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 15:19:09,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-04 15:19:09,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-04 15:19:09,568 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) [2024-11-04 15:19:09,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 15:19:09,597 INFO L93 Difference]: Finished difference Result 149 states and 237 transitions. [2024-11-04 15:19:09,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-04 15:19:09,599 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 [2024-11-04 15:19:09,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 15:19:09,606 INFO L225 Difference]: With dead ends: 149 [2024-11-04 15:19:09,606 INFO L226 Difference]: Without dead ends: 75 [2024-11-04 15:19:09,610 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 [2024-11-04 15:19:09,612 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 [2024-11-04 15:19:09,615 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] [2024-11-04 15:19:09,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-04 15:19:09,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2024-11-04 15:19:09,650 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) [2024-11-04 15:19:09,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 97 transitions. [2024-11-04 15:19:09,653 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 97 transitions. Word has length 41 [2024-11-04 15:19:09,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 15:19:09,653 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 97 transitions. [2024-11-04 15:19:09,654 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) [2024-11-04 15:19:09,654 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 97 transitions. [2024-11-04 15:19:09,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-04 15:19:09,655 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 15:19:09,655 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] [2024-11-04 15:19:09,674 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-04 15:19:09,859 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 [2024-11-04 15:19:09,860 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 15:19:09,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 15:19:09,861 INFO L85 PathProgramCache]: Analyzing trace with hash 2099855424, now seen corresponding path program 1 times [2024-11-04 15:19:09,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 15:19:09,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [964886843] [2024-11-04 15:19:09,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 15:19:09,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:19:09,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 15:19:09,863 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) [2024-11-04 15:19:09,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-04 15:19:10,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 15:19:10,319 INFO L255 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-04 15:19:10,324 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 15:19:10,346 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-04 15:19:10,346 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 15:19:10,395 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-04 15:19:10,396 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 15:19:10,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [964886843] [2024-11-04 15:19:10,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [964886843] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-04 15:19:10,397 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-04 15:19:10,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-04 15:19:10,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135390068] [2024-11-04 15:19:10,397 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-04 15:19:10,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-04 15:19:10,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 15:19:10,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-04 15:19:10,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-04 15:19:10,401 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) [2024-11-04 15:19:10,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 15:19:10,444 INFO L93 Difference]: Finished difference Result 149 states and 194 transitions. [2024-11-04 15:19:10,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-04 15:19:10,447 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 [2024-11-04 15:19:10,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 15:19:10,448 INFO L225 Difference]: With dead ends: 149 [2024-11-04 15:19:10,448 INFO L226 Difference]: Without dead ends: 78 [2024-11-04 15:19:10,449 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 [2024-11-04 15:19:10,450 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 [2024-11-04 15:19:10,452 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] [2024-11-04 15:19:10,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-04 15:19:10,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2024-11-04 15:19:10,465 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) [2024-11-04 15:19:10,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 100 transitions. [2024-11-04 15:19:10,466 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 100 transitions. Word has length 41 [2024-11-04 15:19:10,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 15:19:10,466 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 100 transitions. [2024-11-04 15:19:10,467 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) [2024-11-04 15:19:10,467 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 100 transitions. [2024-11-04 15:19:10,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-04 15:19:10,468 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 15:19:10,468 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] [2024-11-04 15:19:10,488 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-04 15:19:10,668 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 [2024-11-04 15:19:10,669 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 15:19:10,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 15:19:10,670 INFO L85 PathProgramCache]: Analyzing trace with hash 963432764, now seen corresponding path program 1 times [2024-11-04 15:19:10,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 15:19:10,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [534736036] [2024-11-04 15:19:10,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 15:19:10,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:19:10,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 15:19:10,672 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) [2024-11-04 15:19:10,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-04 15:19:11,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 15:19:11,162 INFO L255 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-04 15:19:11,167 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 15:19:11,177 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-04 15:19:11,177 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 15:19:11,207 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-04 15:19:11,207 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 15:19:11,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [534736036] [2024-11-04 15:19:11,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [534736036] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-04 15:19:11,208 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-04 15:19:11,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-04 15:19:11,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98101845] [2024-11-04 15:19:11,208 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-04 15:19:11,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-04 15:19:11,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 15:19:11,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-04 15:19:11,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-04 15:19:11,210 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) [2024-11-04 15:19:11,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 15:19:11,249 INFO L93 Difference]: Finished difference Result 149 states and 193 transitions. [2024-11-04 15:19:11,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-04 15:19:11,251 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 [2024-11-04 15:19:11,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 15:19:11,252 INFO L225 Difference]: With dead ends: 149 [2024-11-04 15:19:11,252 INFO L226 Difference]: Without dead ends: 81 [2024-11-04 15:19:11,253 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 [2024-11-04 15:19:11,253 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 [2024-11-04 15:19:11,254 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] [2024-11-04 15:19:11,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-11-04 15:19:11,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2024-11-04 15:19:11,260 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) [2024-11-04 15:19:11,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 103 transitions. [2024-11-04 15:19:11,261 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 103 transitions. Word has length 45 [2024-11-04 15:19:11,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 15:19:11,261 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 103 transitions. [2024-11-04 15:19:11,262 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) [2024-11-04 15:19:11,262 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 103 transitions. [2024-11-04 15:19:11,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-04 15:19:11,263 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 15:19:11,263 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] [2024-11-04 15:19:11,285 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-04 15:19:11,463 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 [2024-11-04 15:19:11,464 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 15:19:11,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 15:19:11,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1007195064, now seen corresponding path program 1 times [2024-11-04 15:19:11,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 15:19:11,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [69537903] [2024-11-04 15:19:11,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 15:19:11,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:19:11,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 15:19:11,467 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) [2024-11-04 15:19:11,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-04 15:19:11,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 15:19:11,973 INFO L255 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-04 15:19:11,979 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 15:19:11,990 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-04 15:19:11,990 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 15:19:12,023 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-04 15:19:12,023 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 15:19:12,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [69537903] [2024-11-04 15:19:12,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [69537903] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-04 15:19:12,025 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-04 15:19:12,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-04 15:19:12,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103225534] [2024-11-04 15:19:12,025 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-04 15:19:12,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-04 15:19:12,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 15:19:12,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-04 15:19:12,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-04 15:19:12,029 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) [2024-11-04 15:19:12,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 15:19:12,078 INFO L93 Difference]: Finished difference Result 149 states and 192 transitions. [2024-11-04 15:19:12,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-04 15:19:12,084 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 [2024-11-04 15:19:12,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 15:19:12,085 INFO L225 Difference]: With dead ends: 149 [2024-11-04 15:19:12,086 INFO L226 Difference]: Without dead ends: 84 [2024-11-04 15:19:12,086 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 [2024-11-04 15:19:12,088 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 [2024-11-04 15:19:12,089 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] [2024-11-04 15:19:12,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-11-04 15:19:12,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2024-11-04 15:19:12,098 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) [2024-11-04 15:19:12,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 106 transitions. [2024-11-04 15:19:12,099 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 106 transitions. Word has length 49 [2024-11-04 15:19:12,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 15:19:12,100 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 106 transitions. [2024-11-04 15:19:12,100 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) [2024-11-04 15:19:12,100 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 106 transitions. [2024-11-04 15:19:12,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-04 15:19:12,104 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 15:19:12,104 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] [2024-11-04 15:19:12,123 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-04 15:19:12,305 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 [2024-11-04 15:19:12,305 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 15:19:12,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 15:19:12,306 INFO L85 PathProgramCache]: Analyzing trace with hash -2038061132, now seen corresponding path program 1 times [2024-11-04 15:19:12,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 15:19:12,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [197932560] [2024-11-04 15:19:12,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 15:19:12,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:19:12,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 15:19:12,308 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) [2024-11-04 15:19:12,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-04 15:19:12,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 15:19:12,793 INFO L255 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-04 15:19:12,797 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 15:19:12,837 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-04 15:19:12,837 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 15:19:12,919 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-04 15:19:12,919 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 15:19:12,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [197932560] [2024-11-04 15:19:12,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [197932560] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-04 15:19:12,920 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-04 15:19:12,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 9 [2024-11-04 15:19:12,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257019264] [2024-11-04 15:19:12,920 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-04 15:19:12,921 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-04 15:19:12,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 15:19:12,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-04 15:19:12,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-11-04 15:19:12,922 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) [2024-11-04 15:19:13,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 15:19:13,003 INFO L93 Difference]: Finished difference Result 169 states and 216 transitions. [2024-11-04 15:19:13,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-04 15:19:13,004 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 [2024-11-04 15:19:13,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 15:19:13,005 INFO L225 Difference]: With dead ends: 169 [2024-11-04 15:19:13,005 INFO L226 Difference]: Without dead ends: 92 [2024-11-04 15:19:13,005 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 [2024-11-04 15:19:13,006 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 [2024-11-04 15:19:13,006 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] [2024-11-04 15:19:13,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-11-04 15:19:13,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2024-11-04 15:19:13,017 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) [2024-11-04 15:19:13,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 115 transitions. [2024-11-04 15:19:13,018 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 115 transitions. Word has length 53 [2024-11-04 15:19:13,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 15:19:13,019 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 115 transitions. [2024-11-04 15:19:13,019 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) [2024-11-04 15:19:13,019 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 115 transitions. [2024-11-04 15:19:13,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-04 15:19:13,022 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 15:19:13,022 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] [2024-11-04 15:19:13,046 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-04 15:19:13,223 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 [2024-11-04 15:19:13,224 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 15:19:13,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 15:19:13,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1928044208, now seen corresponding path program 2 times [2024-11-04 15:19:13,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 15:19:13,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1861843208] [2024-11-04 15:19:13,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 15:19:13,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:19:13,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 15:19:13,226 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) [2024-11-04 15:19:13,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-04 15:19:13,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 15:19:13,688 INFO L255 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-04 15:19:13,692 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 15:19:13,731 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-04 15:19:13,731 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 15:19:13,800 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-04 15:19:13,801 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 15:19:13,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1861843208] [2024-11-04 15:19:13,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1861843208] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-04 15:19:13,801 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-04 15:19:13,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 9 [2024-11-04 15:19:13,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164027999] [2024-11-04 15:19:13,801 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-04 15:19:13,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-04 15:19:13,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 15:19:13,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-04 15:19:13,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-11-04 15:19:13,803 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) [2024-11-04 15:19:13,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 15:19:13,897 INFO L93 Difference]: Finished difference Result 165 states and 211 transitions. [2024-11-04 15:19:13,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-04 15:19:13,898 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 [2024-11-04 15:19:13,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 15:19:13,900 INFO L225 Difference]: With dead ends: 165 [2024-11-04 15:19:13,900 INFO L226 Difference]: Without dead ends: 100 [2024-11-04 15:19:13,901 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 [2024-11-04 15:19:13,901 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 [2024-11-04 15:19:13,902 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] [2024-11-04 15:19:13,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-11-04 15:19:13,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2024-11-04 15:19:13,914 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) [2024-11-04 15:19:13,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 124 transitions. [2024-11-04 15:19:13,915 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 124 transitions. Word has length 57 [2024-11-04 15:19:13,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 15:19:13,916 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 124 transitions. [2024-11-04 15:19:13,916 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) [2024-11-04 15:19:13,916 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 124 transitions. [2024-11-04 15:19:13,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-04 15:19:13,917 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 15:19:13,917 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] [2024-11-04 15:19:13,941 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-04 15:19:14,117 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 [2024-11-04 15:19:14,118 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 15:19:14,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 15:19:14,119 INFO L85 PathProgramCache]: Analyzing trace with hash 779777708, now seen corresponding path program 3 times [2024-11-04 15:19:14,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 15:19:14,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [18116284] [2024-11-04 15:19:14,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 15:19:14,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:19:14,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 15:19:14,120 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) [2024-11-04 15:19:14,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-04 15:19:14,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 15:19:14,623 INFO L255 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-04 15:19:14,630 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 15:19:15,058 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-04 15:19:15,058 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 15:19:16,017 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-04 15:19:16,018 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 15:19:16,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [18116284] [2024-11-04 15:19:16,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [18116284] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-04 15:19:16,018 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-04 15:19:16,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2024-11-04 15:19:16,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056799216] [2024-11-04 15:19:16,019 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-04 15:19:16,019 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-04 15:19:16,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 15:19:16,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-04 15:19:16,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2024-11-04 15:19:16,021 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) [2024-11-04 15:19:16,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 15:19:16,579 INFO L93 Difference]: Finished difference Result 115 states and 144 transitions. [2024-11-04 15:19:16,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-04 15:19:16,580 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 [2024-11-04 15:19:16,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 15:19:16,581 INFO L225 Difference]: With dead ends: 115 [2024-11-04 15:19:16,581 INFO L226 Difference]: Without dead ends: 113 [2024-11-04 15:19:16,582 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 [2024-11-04 15:19:16,583 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, 0.5s IncrementalHoareTripleChecker+Time [2024-11-04 15:19:16,583 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 596 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-04 15:19:16,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-11-04 15:19:16,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 112. [2024-11-04 15:19:16,610 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) [2024-11-04 15:19:16,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 141 transitions. [2024-11-04 15:19:16,612 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 141 transitions. Word has length 61 [2024-11-04 15:19:16,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 15:19:16,615 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 141 transitions. [2024-11-04 15:19:16,615 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) [2024-11-04 15:19:16,616 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 141 transitions. [2024-11-04 15:19:16,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-04 15:19:16,618 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 15:19:16,618 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] [2024-11-04 15:19:16,647 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-04 15:19:16,821 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 [2024-11-04 15:19:16,822 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 15:19:16,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 15:19:16,823 INFO L85 PathProgramCache]: Analyzing trace with hash -466492681, now seen corresponding path program 1 times [2024-11-04 15:19:16,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 15:19:16,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [567311527] [2024-11-04 15:19:16,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 15:19:16,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:19:16,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 15:19:16,826 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) [2024-11-04 15:19:16,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-04 15:19:17,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 15:19:17,707 INFO L255 TraceCheckSpWp]: Trace formula consists of 1528 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-04 15:19:17,713 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 15:19:17,728 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2024-11-04 15:19:17,728 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 15:19:17,770 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2024-11-04 15:19:17,770 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 15:19:17,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [567311527] [2024-11-04 15:19:17,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [567311527] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-04 15:19:17,770 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-04 15:19:17,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-04 15:19:17,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312867412] [2024-11-04 15:19:17,771 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-04 15:19:17,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-04 15:19:17,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 15:19:17,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-04 15:19:17,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-04 15:19:17,772 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) [2024-11-04 15:19:17,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 15:19:17,815 INFO L93 Difference]: Finished difference Result 179 states and 229 transitions. [2024-11-04 15:19:17,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-04 15:19:17,817 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 [2024-11-04 15:19:17,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 15:19:17,818 INFO L225 Difference]: With dead ends: 179 [2024-11-04 15:19:17,818 INFO L226 Difference]: Without dead ends: 115 [2024-11-04 15:19:17,818 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 [2024-11-04 15:19:17,819 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 [2024-11-04 15:19:17,819 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] [2024-11-04 15:19:17,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-11-04 15:19:17,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2024-11-04 15:19:17,829 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) [2024-11-04 15:19:17,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 144 transitions. [2024-11-04 15:19:17,830 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 144 transitions. Word has length 124 [2024-11-04 15:19:17,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 15:19:17,831 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 144 transitions. [2024-11-04 15:19:17,831 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) [2024-11-04 15:19:17,831 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 144 transitions. [2024-11-04 15:19:17,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-04 15:19:17,832 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 15:19:17,832 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] [2024-11-04 15:19:17,861 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-04 15:19:18,033 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 [2024-11-04 15:19:18,033 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 15:19:18,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 15:19:18,034 INFO L85 PathProgramCache]: Analyzing trace with hash 57551859, now seen corresponding path program 1 times [2024-11-04 15:19:18,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 15:19:18,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1277032610] [2024-11-04 15:19:18,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 15:19:18,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:19:18,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 15:19:18,036 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) [2024-11-04 15:19:18,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-04 15:19:18,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 15:19:18,973 INFO L255 TraceCheckSpWp]: Trace formula consists of 1540 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-04 15:19:18,979 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 15:19:18,992 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-04 15:19:18,992 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 15:19:19,043 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-11-04 15:19:19,044 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 15:19:19,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1277032610] [2024-11-04 15:19:19,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1277032610] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-04 15:19:19,044 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-04 15:19:19,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-04 15:19:19,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115180444] [2024-11-04 15:19:19,044 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-04 15:19:19,045 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-04 15:19:19,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 15:19:19,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-04 15:19:19,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-04 15:19:19,046 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) [2024-11-04 15:19:19,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 15:19:19,092 INFO L93 Difference]: Finished difference Result 185 states and 235 transitions. [2024-11-04 15:19:19,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-04 15:19:19,093 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 [2024-11-04 15:19:19,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 15:19:19,094 INFO L225 Difference]: With dead ends: 185 [2024-11-04 15:19:19,094 INFO L226 Difference]: Without dead ends: 118 [2024-11-04 15:19:19,095 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 [2024-11-04 15:19:19,095 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 [2024-11-04 15:19:19,096 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] [2024-11-04 15:19:19,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2024-11-04 15:19:19,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2024-11-04 15:19:19,108 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) [2024-11-04 15:19:19,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 147 transitions. [2024-11-04 15:19:19,109 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 147 transitions. Word has length 128 [2024-11-04 15:19:19,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 15:19:19,109 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 147 transitions. [2024-11-04 15:19:19,109 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) [2024-11-04 15:19:19,109 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 147 transitions. [2024-11-04 15:19:19,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-11-04 15:19:19,110 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 15:19:19,110 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] [2024-11-04 15:19:19,138 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-04 15:19:19,311 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 [2024-11-04 15:19:19,311 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 15:19:19,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 15:19:19,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1200629359, now seen corresponding path program 1 times [2024-11-04 15:19:19,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 15:19:19,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1715879989] [2024-11-04 15:19:19,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 15:19:19,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:19:19,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 15:19:19,313 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) [2024-11-04 15:19:19,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-04 15:19:20,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 15:19:20,228 INFO L255 TraceCheckSpWp]: Trace formula consists of 1552 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-04 15:19:20,234 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 15:19:20,244 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2024-11-04 15:19:20,244 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 15:19:20,289 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2024-11-04 15:19:20,289 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 15:19:20,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1715879989] [2024-11-04 15:19:20,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1715879989] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-04 15:19:20,289 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-04 15:19:20,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-04 15:19:20,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310161917] [2024-11-04 15:19:20,290 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-04 15:19:20,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-04 15:19:20,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 15:19:20,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-04 15:19:20,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-04 15:19:20,291 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) [2024-11-04 15:19:20,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 15:19:20,335 INFO L93 Difference]: Finished difference Result 191 states and 241 transitions. [2024-11-04 15:19:20,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-04 15:19:20,337 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 [2024-11-04 15:19:20,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 15:19:20,339 INFO L225 Difference]: With dead ends: 191 [2024-11-04 15:19:20,339 INFO L226 Difference]: Without dead ends: 121 [2024-11-04 15:19:20,339 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 [2024-11-04 15:19:20,340 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 [2024-11-04 15:19:20,340 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] [2024-11-04 15:19:20,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2024-11-04 15:19:20,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2024-11-04 15:19:20,351 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) [2024-11-04 15:19:20,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 150 transitions. [2024-11-04 15:19:20,352 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 150 transitions. Word has length 132 [2024-11-04 15:19:20,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 15:19:20,353 INFO L471 AbstractCegarLoop]: Abstraction has 121 states and 150 transitions. [2024-11-04 15:19:20,353 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) [2024-11-04 15:19:20,353 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 150 transitions. [2024-11-04 15:19:20,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-11-04 15:19:20,354 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 15:19:20,354 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] [2024-11-04 15:19:20,376 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-04 15:19:20,554 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 [2024-11-04 15:19:20,555 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 15:19:20,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 15:19:20,555 INFO L85 PathProgramCache]: Analyzing trace with hash 197194347, now seen corresponding path program 1 times [2024-11-04 15:19:20,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 15:19:20,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2103175751] [2024-11-04 15:19:20,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 15:19:20,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:19:20,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 15:19:20,557 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) [2024-11-04 15:19:20,558 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-04 15:19:21,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 15:19:21,522 INFO L255 TraceCheckSpWp]: Trace formula consists of 1564 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-04 15:19:21,529 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 15:19:21,538 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2024-11-04 15:19:21,539 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 15:19:21,584 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2024-11-04 15:19:21,585 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 15:19:21,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2103175751] [2024-11-04 15:19:21,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2103175751] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-04 15:19:21,585 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-04 15:19:21,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-04 15:19:21,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944686172] [2024-11-04 15:19:21,585 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-04 15:19:21,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-04 15:19:21,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 15:19:21,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-04 15:19:21,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-04 15:19:21,587 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) [2024-11-04 15:19:21,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 15:19:21,628 INFO L93 Difference]: Finished difference Result 197 states and 247 transitions. [2024-11-04 15:19:21,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-04 15:19:21,629 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 [2024-11-04 15:19:21,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 15:19:21,630 INFO L225 Difference]: With dead ends: 197 [2024-11-04 15:19:21,631 INFO L226 Difference]: Without dead ends: 124 [2024-11-04 15:19:21,631 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 [2024-11-04 15:19:21,632 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 [2024-11-04 15:19:21,632 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] [2024-11-04 15:19:21,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2024-11-04 15:19:21,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2024-11-04 15:19:21,640 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) [2024-11-04 15:19:21,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 153 transitions. [2024-11-04 15:19:21,641 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 153 transitions. Word has length 136 [2024-11-04 15:19:21,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 15:19:21,641 INFO L471 AbstractCegarLoop]: Abstraction has 124 states and 153 transitions. [2024-11-04 15:19:21,641 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) [2024-11-04 15:19:21,642 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 153 transitions. [2024-11-04 15:19:21,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-04 15:19:21,643 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 15:19:21,643 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] [2024-11-04 15:19:21,676 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-04 15:19:21,843 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 [2024-11-04 15:19:21,844 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 15:19:21,844 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 15:19:21,844 INFO L85 PathProgramCache]: Analyzing trace with hash -275664921, now seen corresponding path program 1 times [2024-11-04 15:19:21,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 15:19:21,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1195739329] [2024-11-04 15:19:21,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 15:19:21,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:19:21,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 15:19:21,846 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) [2024-11-04 15:19:21,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-04 15:19:22,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 15:19:22,838 INFO L255 TraceCheckSpWp]: Trace formula consists of 1576 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-04 15:19:22,843 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 15:19:22,853 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2024-11-04 15:19:22,853 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 15:19:22,900 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2024-11-04 15:19:22,901 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 15:19:22,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1195739329] [2024-11-04 15:19:22,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1195739329] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-04 15:19:22,901 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-04 15:19:22,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-04 15:19:22,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593084760] [2024-11-04 15:19:22,901 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-04 15:19:22,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-04 15:19:22,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 15:19:22,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-04 15:19:22,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-04 15:19:22,903 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) [2024-11-04 15:19:22,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 15:19:22,946 INFO L93 Difference]: Finished difference Result 203 states and 253 transitions. [2024-11-04 15:19:22,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-04 15:19:22,948 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 [2024-11-04 15:19:22,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 15:19:22,950 INFO L225 Difference]: With dead ends: 203 [2024-11-04 15:19:22,950 INFO L226 Difference]: Without dead ends: 127 [2024-11-04 15:19:22,950 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 [2024-11-04 15:19:22,951 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 [2024-11-04 15:19:22,951 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] [2024-11-04 15:19:22,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2024-11-04 15:19:22,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2024-11-04 15:19:22,960 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) [2024-11-04 15:19:22,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 156 transitions. [2024-11-04 15:19:22,962 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 156 transitions. Word has length 140 [2024-11-04 15:19:22,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 15:19:22,962 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 156 transitions. [2024-11-04 15:19:22,962 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) [2024-11-04 15:19:22,962 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 156 transitions. [2024-11-04 15:19:22,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-04 15:19:22,964 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 15:19:22,964 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] [2024-11-04 15:19:22,993 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-04 15:19:23,164 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 [2024-11-04 15:19:23,165 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 15:19:23,182 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 15:19:23,182 INFO L85 PathProgramCache]: Analyzing trace with hash -2131001629, now seen corresponding path program 1 times [2024-11-04 15:19:23,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 15:19:23,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1150705459] [2024-11-04 15:19:23,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 15:19:23,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:19:23,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 15:19:23,185 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) [2024-11-04 15:19:23,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-04 15:19:24,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 15:19:24,204 INFO L255 TraceCheckSpWp]: Trace formula consists of 1588 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-04 15:19:24,209 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 15:19:24,220 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2024-11-04 15:19:24,220 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 15:19:24,259 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2024-11-04 15:19:24,259 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 15:19:24,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1150705459] [2024-11-04 15:19:24,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1150705459] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-04 15:19:24,259 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-04 15:19:24,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-04 15:19:24,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852582598] [2024-11-04 15:19:24,260 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-04 15:19:24,260 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-04 15:19:24,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 15:19:24,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-04 15:19:24,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-04 15:19:24,261 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) [2024-11-04 15:19:24,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 15:19:24,313 INFO L93 Difference]: Finished difference Result 209 states and 259 transitions. [2024-11-04 15:19:24,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-04 15:19:24,317 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 [2024-11-04 15:19:24,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 15:19:24,318 INFO L225 Difference]: With dead ends: 209 [2024-11-04 15:19:24,318 INFO L226 Difference]: Without dead ends: 130 [2024-11-04 15:19:24,319 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 [2024-11-04 15:19:24,319 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 [2024-11-04 15:19:24,319 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] [2024-11-04 15:19:24,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2024-11-04 15:19:24,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2024-11-04 15:19:24,328 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) [2024-11-04 15:19:24,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 159 transitions. [2024-11-04 15:19:24,329 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 159 transitions. Word has length 144 [2024-11-04 15:19:24,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 15:19:24,329 INFO L471 AbstractCegarLoop]: Abstraction has 130 states and 159 transitions. [2024-11-04 15:19:24,329 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) [2024-11-04 15:19:24,329 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 159 transitions. [2024-11-04 15:19:24,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-11-04 15:19:24,331 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 15:19:24,331 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] [2024-11-04 15:19:24,362 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-04 15:19:24,531 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 [2024-11-04 15:19:24,532 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 15:19:24,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 15:19:24,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1717534559, now seen corresponding path program 1 times [2024-11-04 15:19:24,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 15:19:24,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1765832356] [2024-11-04 15:19:24,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 15:19:24,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:19:24,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 15:19:24,534 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) [2024-11-04 15:19:24,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-04 15:19:25,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 15:19:25,630 INFO L255 TraceCheckSpWp]: Trace formula consists of 1600 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-04 15:19:25,635 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 15:19:25,643 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2024-11-04 15:19:25,643 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 15:19:25,687 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2024-11-04 15:19:25,687 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 15:19:25,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1765832356] [2024-11-04 15:19:25,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1765832356] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-04 15:19:25,687 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-04 15:19:25,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-04 15:19:25,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765469911] [2024-11-04 15:19:25,688 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-04 15:19:25,688 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-04 15:19:25,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 15:19:25,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-04 15:19:25,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-04 15:19:25,689 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) [2024-11-04 15:19:25,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 15:19:25,726 INFO L93 Difference]: Finished difference Result 215 states and 265 transitions. [2024-11-04 15:19:25,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-04 15:19:25,727 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 [2024-11-04 15:19:25,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 15:19:25,728 INFO L225 Difference]: With dead ends: 215 [2024-11-04 15:19:25,728 INFO L226 Difference]: Without dead ends: 133 [2024-11-04 15:19:25,729 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 [2024-11-04 15:19:25,729 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 [2024-11-04 15:19:25,729 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] [2024-11-04 15:19:25,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2024-11-04 15:19:25,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2024-11-04 15:19:25,738 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) [2024-11-04 15:19:25,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 162 transitions. [2024-11-04 15:19:25,739 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 162 transitions. Word has length 148 [2024-11-04 15:19:25,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 15:19:25,740 INFO L471 AbstractCegarLoop]: Abstraction has 133 states and 162 transitions. [2024-11-04 15:19:25,740 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) [2024-11-04 15:19:25,740 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 162 transitions. [2024-11-04 15:19:25,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-11-04 15:19:25,741 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 15:19:25,741 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] [2024-11-04 15:19:25,770 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-04 15:19:25,942 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 [2024-11-04 15:19:25,942 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 15:19:25,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 15:19:25,943 INFO L85 PathProgramCache]: Analyzing trace with hash 143053147, now seen corresponding path program 1 times [2024-11-04 15:19:25,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 15:19:25,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2086637358] [2024-11-04 15:19:25,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 15:19:25,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:19:25,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 15:19:25,945 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) [2024-11-04 15:19:25,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-04 15:19:27,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 15:19:27,045 INFO L255 TraceCheckSpWp]: Trace formula consists of 1612 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-04 15:19:27,050 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 15:19:27,058 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-11-04 15:19:27,058 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 15:19:27,102 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2024-11-04 15:19:27,102 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 15:19:27,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2086637358] [2024-11-04 15:19:27,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2086637358] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-04 15:19:27,103 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-04 15:19:27,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-04 15:19:27,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671416102] [2024-11-04 15:19:27,103 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-04 15:19:27,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-04 15:19:27,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 15:19:27,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-04 15:19:27,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-04 15:19:27,104 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) [2024-11-04 15:19:27,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 15:19:27,148 INFO L93 Difference]: Finished difference Result 221 states and 271 transitions. [2024-11-04 15:19:27,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-04 15:19:27,150 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 [2024-11-04 15:19:27,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 15:19:27,151 INFO L225 Difference]: With dead ends: 221 [2024-11-04 15:19:27,151 INFO L226 Difference]: Without dead ends: 136 [2024-11-04 15:19:27,152 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 [2024-11-04 15:19:27,152 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 [2024-11-04 15:19:27,152 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] [2024-11-04 15:19:27,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-11-04 15:19:27,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2024-11-04 15:19:27,161 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) [2024-11-04 15:19:27,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 165 transitions. [2024-11-04 15:19:27,162 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 165 transitions. Word has length 152 [2024-11-04 15:19:27,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 15:19:27,163 INFO L471 AbstractCegarLoop]: Abstraction has 136 states and 165 transitions. [2024-11-04 15:19:27,163 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) [2024-11-04 15:19:27,163 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 165 transitions. [2024-11-04 15:19:27,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-04 15:19:27,165 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 15:19:27,165 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] [2024-11-04 15:19:27,198 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-04 15:19:27,365 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 [2024-11-04 15:19:27,366 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 15:19:27,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 15:19:27,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1130195753, now seen corresponding path program 1 times [2024-11-04 15:19:27,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 15:19:27,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1051506160] [2024-11-04 15:19:27,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 15:19:27,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:19:27,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 15:19:27,368 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) [2024-11-04 15:19:27,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-04 15:19:28,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 15:19:28,541 INFO L255 TraceCheckSpWp]: Trace formula consists of 1624 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-04 15:19:28,545 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 15:19:28,559 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-11-04 15:19:28,559 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 15:19:28,602 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2024-11-04 15:19:28,602 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 15:19:28,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1051506160] [2024-11-04 15:19:28,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1051506160] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-04 15:19:28,603 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-04 15:19:28,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-04 15:19:28,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669374597] [2024-11-04 15:19:28,603 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-04 15:19:28,604 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-04 15:19:28,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 15:19:28,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-04 15:19:28,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-04 15:19:28,604 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) [2024-11-04 15:19:28,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 15:19:28,649 INFO L93 Difference]: Finished difference Result 227 states and 277 transitions. [2024-11-04 15:19:28,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-04 15:19:28,650 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 [2024-11-04 15:19:28,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 15:19:28,651 INFO L225 Difference]: With dead ends: 227 [2024-11-04 15:19:28,652 INFO L226 Difference]: Without dead ends: 139 [2024-11-04 15:19:28,652 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 [2024-11-04 15:19:28,652 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 [2024-11-04 15:19:28,653 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] [2024-11-04 15:19:28,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2024-11-04 15:19:28,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2024-11-04 15:19:28,664 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) [2024-11-04 15:19:28,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 168 transitions. [2024-11-04 15:19:28,665 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 168 transitions. Word has length 156 [2024-11-04 15:19:28,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 15:19:28,666 INFO L471 AbstractCegarLoop]: Abstraction has 139 states and 168 transitions. [2024-11-04 15:19:28,666 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) [2024-11-04 15:19:28,666 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 168 transitions. [2024-11-04 15:19:28,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-04 15:19:28,667 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 15:19:28,667 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] [2024-11-04 15:19:28,696 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-04 15:19:28,868 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 [2024-11-04 15:19:28,868 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 15:19:28,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 15:19:28,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1850468819, now seen corresponding path program 1 times [2024-11-04 15:19:28,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 15:19:28,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [720419193] [2024-11-04 15:19:28,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 15:19:28,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:19:28,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 15:19:28,871 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) [2024-11-04 15:19:28,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-04 15:19:30,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 15:19:30,103 INFO L255 TraceCheckSpWp]: Trace formula consists of 1636 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-04 15:19:30,109 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 15:19:30,118 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2024-11-04 15:19:30,118 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 15:19:30,214 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-11-04 15:19:30,214 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 15:19:30,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [720419193] [2024-11-04 15:19:30,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [720419193] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-04 15:19:30,215 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-04 15:19:30,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-04 15:19:30,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361110502] [2024-11-04 15:19:30,215 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-04 15:19:30,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-04 15:19:30,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 15:19:30,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-04 15:19:30,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-04 15:19:30,216 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) [2024-11-04 15:19:30,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 15:19:30,244 INFO L93 Difference]: Finished difference Result 233 states and 283 transitions. [2024-11-04 15:19:30,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-04 15:19:30,245 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 [2024-11-04 15:19:30,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 15:19:30,246 INFO L225 Difference]: With dead ends: 233 [2024-11-04 15:19:30,246 INFO L226 Difference]: Without dead ends: 142 [2024-11-04 15:19:30,247 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 [2024-11-04 15:19:30,247 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 [2024-11-04 15:19:30,247 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] [2024-11-04 15:19:30,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-11-04 15:19:30,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2024-11-04 15:19:30,256 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) [2024-11-04 15:19:30,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 171 transitions. [2024-11-04 15:19:30,259 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 171 transitions. Word has length 160 [2024-11-04 15:19:30,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 15:19:30,260 INFO L471 AbstractCegarLoop]: Abstraction has 142 states and 171 transitions. [2024-11-04 15:19:30,260 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) [2024-11-04 15:19:30,260 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 171 transitions. [2024-11-04 15:19:30,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-11-04 15:19:30,262 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 15:19:30,262 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] [2024-11-04 15:19:30,295 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-04 15:19:30,462 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 [2024-11-04 15:19:30,463 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 15:19:30,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 15:19:30,463 INFO L85 PathProgramCache]: Analyzing trace with hash -914100145, now seen corresponding path program 1 times [2024-11-04 15:19:30,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 15:19:30,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1488501568] [2024-11-04 15:19:30,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 15:19:30,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:19:30,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 15:19:30,465 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) [2024-11-04 15:19:30,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-04 15:19:31,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 15:19:31,726 INFO L255 TraceCheckSpWp]: Trace formula consists of 1648 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-04 15:19:31,731 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 15:19:31,738 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-11-04 15:19:31,738 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 15:19:31,767 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2024-11-04 15:19:31,767 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 15:19:31,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1488501568] [2024-11-04 15:19:31,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1488501568] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-04 15:19:31,767 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-04 15:19:31,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-04 15:19:31,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953899353] [2024-11-04 15:19:31,768 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-04 15:19:31,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-04 15:19:31,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 15:19:31,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-04 15:19:31,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-04 15:19:31,769 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) [2024-11-04 15:19:31,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 15:19:31,804 INFO L93 Difference]: Finished difference Result 239 states and 289 transitions. [2024-11-04 15:19:31,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-04 15:19:31,805 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 [2024-11-04 15:19:31,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 15:19:31,806 INFO L225 Difference]: With dead ends: 239 [2024-11-04 15:19:31,806 INFO L226 Difference]: Without dead ends: 145 [2024-11-04 15:19:31,806 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 [2024-11-04 15:19:31,807 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 [2024-11-04 15:19:31,807 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] [2024-11-04 15:19:31,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2024-11-04 15:19:31,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2024-11-04 15:19:31,818 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) [2024-11-04 15:19:31,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 174 transitions. [2024-11-04 15:19:31,819 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 174 transitions. Word has length 164 [2024-11-04 15:19:31,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 15:19:31,819 INFO L471 AbstractCegarLoop]: Abstraction has 145 states and 174 transitions. [2024-11-04 15:19:31,820 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) [2024-11-04 15:19:31,820 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 174 transitions. [2024-11-04 15:19:31,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-04 15:19:31,821 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 15:19:31,821 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] [2024-11-04 15:19:31,847 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-04 15:19:32,021 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 [2024-11-04 15:19:32,022 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 15:19:32,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 15:19:32,022 INFO L85 PathProgramCache]: Analyzing trace with hash -457979829, now seen corresponding path program 1 times [2024-11-04 15:19:32,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 15:19:32,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [831740394] [2024-11-04 15:19:32,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 15:19:32,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:19:32,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 15:19:32,024 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) [2024-11-04 15:19:32,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-04 15:19:33,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 15:19:33,417 INFO L255 TraceCheckSpWp]: Trace formula consists of 1660 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-04 15:19:33,422 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 15:19:33,429 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2024-11-04 15:19:33,429 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 15:19:33,471 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2024-11-04 15:19:33,471 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 15:19:33,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [831740394] [2024-11-04 15:19:33,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [831740394] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-04 15:19:33,472 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-04 15:19:33,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-04 15:19:33,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82734177] [2024-11-04 15:19:33,472 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-04 15:19:33,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-04 15:19:33,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 15:19:33,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-04 15:19:33,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-04 15:19:33,476 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) [2024-11-04 15:19:33,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 15:19:33,506 INFO L93 Difference]: Finished difference Result 245 states and 295 transitions. [2024-11-04 15:19:33,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-04 15:19:33,507 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 [2024-11-04 15:19:33,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 15:19:33,508 INFO L225 Difference]: With dead ends: 245 [2024-11-04 15:19:33,508 INFO L226 Difference]: Without dead ends: 148 [2024-11-04 15:19:33,508 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 [2024-11-04 15:19:33,509 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 [2024-11-04 15:19:33,509 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] [2024-11-04 15:19:33,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2024-11-04 15:19:33,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2024-11-04 15:19:33,519 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) [2024-11-04 15:19:33,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 177 transitions. [2024-11-04 15:19:33,521 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 177 transitions. Word has length 168 [2024-11-04 15:19:33,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 15:19:33,521 INFO L471 AbstractCegarLoop]: Abstraction has 148 states and 177 transitions. [2024-11-04 15:19:33,521 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) [2024-11-04 15:19:33,521 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 177 transitions. [2024-11-04 15:19:33,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-11-04 15:19:33,522 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 15:19:33,522 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] [2024-11-04 15:19:33,547 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-04 15:19:33,722 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 [2024-11-04 15:19:33,723 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 15:19:33,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 15:19:33,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1789694407, now seen corresponding path program 1 times [2024-11-04 15:19:33,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 15:19:33,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [928977635] [2024-11-04 15:19:33,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 15:19:33,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:19:33,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 15:19:33,725 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) [2024-11-04 15:19:33,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-04 15:19:35,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 15:19:35,257 INFO L255 TraceCheckSpWp]: Trace formula consists of 1672 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-04 15:19:35,263 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 15:19:35,274 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2024-11-04 15:19:35,274 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 15:19:35,320 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-04 15:19:35,320 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 15:19:35,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [928977635] [2024-11-04 15:19:35,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [928977635] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-04 15:19:35,321 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-04 15:19:35,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-04 15:19:35,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875513784] [2024-11-04 15:19:35,321 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-04 15:19:35,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-04 15:19:35,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 15:19:35,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-04 15:19:35,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-04 15:19:35,323 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) [2024-11-04 15:19:35,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 15:19:35,375 INFO L93 Difference]: Finished difference Result 251 states and 301 transitions. [2024-11-04 15:19:35,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-04 15:19:35,376 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 [2024-11-04 15:19:35,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 15:19:35,378 INFO L225 Difference]: With dead ends: 251 [2024-11-04 15:19:35,378 INFO L226 Difference]: Without dead ends: 151 [2024-11-04 15:19:35,378 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 [2024-11-04 15:19:35,379 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 [2024-11-04 15:19:35,379 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] [2024-11-04 15:19:35,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2024-11-04 15:19:35,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2024-11-04 15:19:35,396 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) [2024-11-04 15:19:35,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 180 transitions. [2024-11-04 15:19:35,398 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 180 transitions. Word has length 172 [2024-11-04 15:19:35,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 15:19:35,398 INFO L471 AbstractCegarLoop]: Abstraction has 151 states and 180 transitions. [2024-11-04 15:19:35,399 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) [2024-11-04 15:19:35,399 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 180 transitions. [2024-11-04 15:19:35,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-04 15:19:35,400 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 15:19:35,400 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] [2024-11-04 15:19:35,432 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-04 15:19:35,601 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 [2024-11-04 15:19:35,601 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 15:19:35,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 15:19:35,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1151823043, now seen corresponding path program 1 times [2024-11-04 15:19:35,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 15:19:35,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [532321586] [2024-11-04 15:19:35,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 15:19:35,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:19:35,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 15:19:35,604 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) [2024-11-04 15:19:35,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-04 15:19:37,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 15:19:37,105 INFO L255 TraceCheckSpWp]: Trace formula consists of 1684 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-04 15:19:37,110 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 15:19:37,117 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2024-11-04 15:19:37,117 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 15:19:37,149 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2024-11-04 15:19:37,150 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 15:19:37,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [532321586] [2024-11-04 15:19:37,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [532321586] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-04 15:19:37,150 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-04 15:19:37,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-04 15:19:37,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308232388] [2024-11-04 15:19:37,151 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-04 15:19:37,151 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-04 15:19:37,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 15:19:37,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-04 15:19:37,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-04 15:19:37,153 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) [2024-11-04 15:19:37,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 15:19:37,195 INFO L93 Difference]: Finished difference Result 257 states and 307 transitions. [2024-11-04 15:19:37,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-04 15:19:37,197 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 [2024-11-04 15:19:37,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 15:19:37,198 INFO L225 Difference]: With dead ends: 257 [2024-11-04 15:19:37,198 INFO L226 Difference]: Without dead ends: 154 [2024-11-04 15:19:37,199 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 [2024-11-04 15:19:37,199 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 [2024-11-04 15:19:37,199 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] [2024-11-04 15:19:37,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2024-11-04 15:19:37,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2024-11-04 15:19:37,211 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) [2024-11-04 15:19:37,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 183 transitions. [2024-11-04 15:19:37,212 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 183 transitions. Word has length 176 [2024-11-04 15:19:37,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 15:19:37,213 INFO L471 AbstractCegarLoop]: Abstraction has 154 states and 183 transitions. [2024-11-04 15:19:37,213 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) [2024-11-04 15:19:37,213 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 183 transitions. [2024-11-04 15:19:37,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-11-04 15:19:37,214 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 15:19:37,215 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] [2024-11-04 15:19:37,245 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-04 15:19:37,415 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 [2024-11-04 15:19:37,415 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 15:19:37,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 15:19:37,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1002079937, now seen corresponding path program 1 times [2024-11-04 15:19:37,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 15:19:37,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1608360634] [2024-11-04 15:19:37,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 15:19:37,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:19:37,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 15:19:37,418 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) [2024-11-04 15:19:37,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-04 15:19:38,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 15:19:38,942 INFO L255 TraceCheckSpWp]: Trace formula consists of 1696 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-04 15:19:38,947 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 15:19:38,953 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2024-11-04 15:19:38,953 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 15:19:38,982 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2024-11-04 15:19:38,982 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 15:19:38,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1608360634] [2024-11-04 15:19:38,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1608360634] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-04 15:19:38,982 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-04 15:19:38,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-04 15:19:38,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279740822] [2024-11-04 15:19:38,983 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-04 15:19:38,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-04 15:19:38,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 15:19:38,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-04 15:19:38,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-04 15:19:38,984 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) [2024-11-04 15:19:39,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 15:19:39,025 INFO L93 Difference]: Finished difference Result 263 states and 313 transitions. [2024-11-04 15:19:39,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-04 15:19:39,027 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 [2024-11-04 15:19:39,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 15:19:39,029 INFO L225 Difference]: With dead ends: 263 [2024-11-04 15:19:39,029 INFO L226 Difference]: Without dead ends: 157 [2024-11-04 15:19:39,029 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 [2024-11-04 15:19:39,030 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 [2024-11-04 15:19:39,030 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] [2024-11-04 15:19:39,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2024-11-04 15:19:39,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2024-11-04 15:19:39,041 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) [2024-11-04 15:19:39,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 186 transitions. [2024-11-04 15:19:39,042 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 186 transitions. Word has length 180 [2024-11-04 15:19:39,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 15:19:39,043 INFO L471 AbstractCegarLoop]: Abstraction has 157 states and 186 transitions. [2024-11-04 15:19:39,043 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) [2024-11-04 15:19:39,043 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 186 transitions. [2024-11-04 15:19:39,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2024-11-04 15:19:39,044 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 15:19:39,044 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] [2024-11-04 15:19:39,083 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-04 15:19:39,244 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 [2024-11-04 15:19:39,245 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 15:19:39,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 15:19:39,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1301272379, now seen corresponding path program 1 times [2024-11-04 15:19:39,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 15:19:39,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [985979846] [2024-11-04 15:19:39,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 15:19:39,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:19:39,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 15:19:39,247 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) [2024-11-04 15:19:39,248 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-04 15:19:40,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 15:19:40,779 INFO L255 TraceCheckSpWp]: Trace formula consists of 1708 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-04 15:19:40,783 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 15:19:40,805 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 112 proven. 4 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2024-11-04 15:19:40,806 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 15:19:40,895 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2024-11-04 15:19:40,896 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 15:19:40,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [985979846] [2024-11-04 15:19:40,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [985979846] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-04 15:19:40,896 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-04 15:19:40,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 9 [2024-11-04 15:19:40,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910566045] [2024-11-04 15:19:40,896 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-04 15:19:40,897 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-04 15:19:40,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 15:19:40,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-04 15:19:40,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-11-04 15:19:40,898 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) [2024-11-04 15:19:41,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 15:19:41,048 INFO L93 Difference]: Finished difference Result 274 states and 326 transitions. [2024-11-04 15:19:41,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-04 15:19:41,049 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 [2024-11-04 15:19:41,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 15:19:41,050 INFO L225 Difference]: With dead ends: 274 [2024-11-04 15:19:41,050 INFO L226 Difference]: Without dead ends: 165 [2024-11-04 15:19:41,051 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 [2024-11-04 15:19:41,051 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 [2024-11-04 15:19:41,052 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] [2024-11-04 15:19:41,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2024-11-04 15:19:41,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2024-11-04 15:19:41,062 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) [2024-11-04 15:19:41,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 195 transitions. [2024-11-04 15:19:41,063 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 195 transitions. Word has length 184 [2024-11-04 15:19:41,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 15:19:41,063 INFO L471 AbstractCegarLoop]: Abstraction has 165 states and 195 transitions. [2024-11-04 15:19:41,064 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) [2024-11-04 15:19:41,064 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 195 transitions. [2024-11-04 15:19:41,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2024-11-04 15:19:41,065 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 15:19:41,065 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] [2024-11-04 15:19:41,101 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-04 15:19:41,265 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 [2024-11-04 15:19:41,265 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 15:19:41,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 15:19:41,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1688806601, now seen corresponding path program 2 times [2024-11-04 15:19:41,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 15:19:41,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [847999799] [2024-11-04 15:19:41,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 15:19:41,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:19:41,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 15:19:41,267 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) [2024-11-04 15:19:41,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-04 15:19:42,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 15:19:42,899 INFO L255 TraceCheckSpWp]: Trace formula consists of 1720 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-04 15:19:42,903 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 15:19:42,926 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 112 proven. 4 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2024-11-04 15:19:42,927 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 15:19:43,014 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2024-11-04 15:19:43,014 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 15:19:43,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [847999799] [2024-11-04 15:19:43,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [847999799] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-04 15:19:43,014 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-04 15:19:43,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 9 [2024-11-04 15:19:43,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423040581] [2024-11-04 15:19:43,015 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-04 15:19:43,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-04 15:19:43,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 15:19:43,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-04 15:19:43,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-11-04 15:19:43,017 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) [2024-11-04 15:19:43,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 15:19:43,134 INFO L93 Difference]: Finished difference Result 290 states and 344 transitions. [2024-11-04 15:19:43,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-04 15:19:43,135 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 [2024-11-04 15:19:43,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 15:19:43,137 INFO L225 Difference]: With dead ends: 290 [2024-11-04 15:19:43,137 INFO L226 Difference]: Without dead ends: 173 [2024-11-04 15:19:43,137 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 [2024-11-04 15:19:43,138 INFO L432 NwaCegarLoop]: 94 mSDtfsCounter, 4 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2024-11-04 15:19:43,139 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] [2024-11-04 15:19:43,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2024-11-04 15:19:43,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2024-11-04 15:19:43,154 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) [2024-11-04 15:19:43,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 204 transitions. [2024-11-04 15:19:43,156 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 204 transitions. Word has length 188 [2024-11-04 15:19:43,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 15:19:43,156 INFO L471 AbstractCegarLoop]: Abstraction has 173 states and 204 transitions. [2024-11-04 15:19:43,157 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) [2024-11-04 15:19:43,157 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 204 transitions. [2024-11-04 15:19:43,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2024-11-04 15:19:43,157 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 15:19:43,158 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] [2024-11-04 15:19:43,187 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-11-04 15:19:43,358 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 [2024-11-04 15:19:43,358 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 15:19:43,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 15:19:43,359 INFO L85 PathProgramCache]: Analyzing trace with hash 577535795, now seen corresponding path program 3 times [2024-11-04 15:19:43,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 15:19:43,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2068783998] [2024-11-04 15:19:43,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 15:19:43,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:19:43,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 15:19:43,360 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) [2024-11-04 15:19:43,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-04 15:19:45,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 15:19:45,026 INFO L255 TraceCheckSpWp]: Trace formula consists of 1732 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-04 15:19:45,030 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 15:19:45,045 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 112 proven. 4 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2024-11-04 15:19:45,045 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 15:19:45,113 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2024-11-04 15:19:45,113 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 15:19:45,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2068783998] [2024-11-04 15:19:45,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2068783998] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-04 15:19:45,113 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-04 15:19:45,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 9 [2024-11-04 15:19:45,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199598245] [2024-11-04 15:19:45,114 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-04 15:19:45,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-04 15:19:45,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 15:19:45,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-04 15:19:45,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-11-04 15:19:45,115 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) [2024-11-04 15:19:45,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 15:19:45,215 INFO L93 Difference]: Finished difference Result 306 states and 362 transitions. [2024-11-04 15:19:45,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-04 15:19:45,216 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 [2024-11-04 15:19:45,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 15:19:45,217 INFO L225 Difference]: With dead ends: 306 [2024-11-04 15:19:45,217 INFO L226 Difference]: Without dead ends: 181 [2024-11-04 15:19:45,218 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 [2024-11-04 15:19:45,219 INFO L432 NwaCegarLoop]: 94 mSDtfsCounter, 3 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2024-11-04 15:19:45,221 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] [2024-11-04 15:19:45,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2024-11-04 15:19:45,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2024-11-04 15:19:45,236 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) [2024-11-04 15:19:45,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 213 transitions. [2024-11-04 15:19:45,238 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 213 transitions. Word has length 192 [2024-11-04 15:19:45,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 15:19:45,238 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 213 transitions. [2024-11-04 15:19:45,238 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) [2024-11-04 15:19:45,238 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 213 transitions. [2024-11-04 15:19:45,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-11-04 15:19:45,239 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 15:19:45,239 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] [2024-11-04 15:19:45,279 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-04 15:19:45,440 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 [2024-11-04 15:19:45,440 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 15:19:45,441 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 15:19:45,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1688235089, now seen corresponding path program 4 times [2024-11-04 15:19:45,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 15:19:45,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1372608233] [2024-11-04 15:19:45,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 15:19:45,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:19:45,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 15:19:45,442 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) [2024-11-04 15:19:45,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-04 15:19:47,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 15:19:47,213 INFO L255 TraceCheckSpWp]: Trace formula consists of 1744 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-04 15:19:47,218 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 15:19:47,240 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 112 proven. 4 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2024-11-04 15:19:47,240 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 15:19:47,310 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked. [2024-11-04 15:19:47,310 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 15:19:47,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1372608233] [2024-11-04 15:19:47,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1372608233] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-04 15:19:47,310 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-04 15:19:47,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 9 [2024-11-04 15:19:47,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772275099] [2024-11-04 15:19:47,311 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-04 15:19:47,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-04 15:19:47,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 15:19:47,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-04 15:19:47,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-11-04 15:19:47,312 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) [2024-11-04 15:19:47,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 15:19:47,435 INFO L93 Difference]: Finished difference Result 322 states and 380 transitions. [2024-11-04 15:19:47,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-04 15:19:47,435 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 [2024-11-04 15:19:47,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 15:19:47,437 INFO L225 Difference]: With dead ends: 322 [2024-11-04 15:19:47,437 INFO L226 Difference]: Without dead ends: 189 [2024-11-04 15:19:47,438 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 [2024-11-04 15:19:47,438 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 [2024-11-04 15:19:47,438 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] [2024-11-04 15:19:47,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2024-11-04 15:19:47,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2024-11-04 15:19:47,450 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) [2024-11-04 15:19:47,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 222 transitions. [2024-11-04 15:19:47,452 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 222 transitions. Word has length 196 [2024-11-04 15:19:47,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 15:19:47,452 INFO L471 AbstractCegarLoop]: Abstraction has 189 states and 222 transitions. [2024-11-04 15:19:47,452 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) [2024-11-04 15:19:47,453 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 222 transitions. [2024-11-04 15:19:47,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2024-11-04 15:19:47,453 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 15:19:47,454 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] [2024-11-04 15:19:47,492 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-04 15:19:47,654 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 [2024-11-04 15:19:47,654 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 15:19:47,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 15:19:47,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1087271381, now seen corresponding path program 5 times [2024-11-04 15:19:47,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 15:19:47,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [542740640] [2024-11-04 15:19:47,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 15:19:47,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:19:47,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 15:19:47,656 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) [2024-11-04 15:19:47,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-04 15:19:49,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 15:19:49,412 INFO L255 TraceCheckSpWp]: Trace formula consists of 1756 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-04 15:19:49,416 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 15:19:49,432 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 112 proven. 4 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-11-04 15:19:49,432 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 15:19:49,505 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 320 trivial. 0 not checked. [2024-11-04 15:19:49,506 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 15:19:49,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [542740640] [2024-11-04 15:19:49,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [542740640] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-04 15:19:49,506 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-04 15:19:49,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 9 [2024-11-04 15:19:49,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495604545] [2024-11-04 15:19:49,507 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-04 15:19:49,507 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-04 15:19:49,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 15:19:49,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-04 15:19:49,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-11-04 15:19:49,508 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) [2024-11-04 15:19:49,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 15:19:49,617 INFO L93 Difference]: Finished difference Result 338 states and 398 transitions. [2024-11-04 15:19:49,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-04 15:19:49,618 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 [2024-11-04 15:19:49,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 15:19:49,619 INFO L225 Difference]: With dead ends: 338 [2024-11-04 15:19:49,620 INFO L226 Difference]: Without dead ends: 197 [2024-11-04 15:19:49,620 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 391 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-11-04 15:19:49,621 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 [2024-11-04 15:19:49,621 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] [2024-11-04 15:19:49,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2024-11-04 15:19:49,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2024-11-04 15:19:49,633 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) [2024-11-04 15:19:49,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 231 transitions. [2024-11-04 15:19:49,635 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 231 transitions. Word has length 200 [2024-11-04 15:19:49,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 15:19:49,635 INFO L471 AbstractCegarLoop]: Abstraction has 197 states and 231 transitions. [2024-11-04 15:19:49,635 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) [2024-11-04 15:19:49,635 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 231 transitions. [2024-11-04 15:19:49,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-11-04 15:19:49,636 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 15:19:49,637 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] [2024-11-04 15:19:49,675 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-04 15:19:49,837 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 [2024-11-04 15:19:49,837 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 15:19:49,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 15:19:49,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1775053223, now seen corresponding path program 6 times [2024-11-04 15:19:49,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 15:19:49,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [516497594] [2024-11-04 15:19:49,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 15:19:49,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:19:49,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 15:19:49,839 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) [2024-11-04 15:19:49,840 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-04 15:19:51,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 15:19:51,792 INFO L255 TraceCheckSpWp]: Trace formula consists of 1768 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-04 15:19:51,796 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 15:19:51,811 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 112 proven. 4 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2024-11-04 15:19:51,811 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 15:19:51,871 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 332 trivial. 0 not checked. [2024-11-04 15:19:51,872 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 15:19:51,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [516497594] [2024-11-04 15:19:51,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [516497594] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-04 15:19:51,872 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-04 15:19:51,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 9 [2024-11-04 15:19:51,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763652508] [2024-11-04 15:19:51,872 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-04 15:19:51,873 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-04 15:19:51,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 15:19:51,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-04 15:19:51,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-11-04 15:19:51,874 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) [2024-11-04 15:19:51,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 15:19:51,958 INFO L93 Difference]: Finished difference Result 354 states and 416 transitions. [2024-11-04 15:19:51,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-04 15:19:51,959 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 [2024-11-04 15:19:51,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 15:19:51,960 INFO L225 Difference]: With dead ends: 354 [2024-11-04 15:19:51,961 INFO L226 Difference]: Without dead ends: 205 [2024-11-04 15:19:51,961 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 399 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-11-04 15:19:51,962 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 [2024-11-04 15:19:51,962 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] [2024-11-04 15:19:51,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2024-11-04 15:19:51,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2024-11-04 15:19:51,977 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) [2024-11-04 15:19:51,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 240 transitions. [2024-11-04 15:19:51,979 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 240 transitions. Word has length 204 [2024-11-04 15:19:51,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 15:19:51,979 INFO L471 AbstractCegarLoop]: Abstraction has 205 states and 240 transitions. [2024-11-04 15:19:51,980 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) [2024-11-04 15:19:51,980 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 240 transitions. [2024-11-04 15:19:51,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2024-11-04 15:19:51,981 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 15:19:51,981 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] [2024-11-04 15:19:52,023 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-11-04 15:19:52,181 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 [2024-11-04 15:19:52,182 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 15:19:52,182 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 15:19:52,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1102539101, now seen corresponding path program 7 times [2024-11-04 15:19:52,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 15:19:52,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1647886236] [2024-11-04 15:19:52,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 15:19:52,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:19:52,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 15:19:52,185 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) [2024-11-04 15:19:52,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-04 15:19:54,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 15:19:54,135 INFO L255 TraceCheckSpWp]: Trace formula consists of 1780 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-04 15:19:54,139 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 15:19:54,164 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 112 proven. 4 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2024-11-04 15:19:54,164 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 15:19:54,233 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 344 trivial. 0 not checked. [2024-11-04 15:19:54,233 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 15:19:54,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1647886236] [2024-11-04 15:19:54,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1647886236] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-04 15:19:54,233 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-04 15:19:54,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 9 [2024-11-04 15:19:54,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375999027] [2024-11-04 15:19:54,234 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-04 15:19:54,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-04 15:19:54,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 15:19:54,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-04 15:19:54,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-11-04 15:19:54,235 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) [2024-11-04 15:19:54,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 15:19:54,337 INFO L93 Difference]: Finished difference Result 370 states and 434 transitions. [2024-11-04 15:19:54,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-04 15:19:54,338 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 [2024-11-04 15:19:54,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 15:19:54,340 INFO L225 Difference]: With dead ends: 370 [2024-11-04 15:19:54,340 INFO L226 Difference]: Without dead ends: 213 [2024-11-04 15:19:54,340 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 407 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-11-04 15:19:54,341 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 [2024-11-04 15:19:54,341 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] [2024-11-04 15:19:54,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2024-11-04 15:19:54,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2024-11-04 15:19:54,355 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) [2024-11-04 15:19:54,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 249 transitions. [2024-11-04 15:19:54,357 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 249 transitions. Word has length 208 [2024-11-04 15:19:54,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 15:19:54,358 INFO L471 AbstractCegarLoop]: Abstraction has 213 states and 249 transitions. [2024-11-04 15:19:54,358 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) [2024-11-04 15:19:54,358 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 249 transitions. [2024-11-04 15:19:54,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2024-11-04 15:19:54,359 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 15:19:54,359 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] [2024-11-04 15:19:54,403 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2024-11-04 15:19:54,559 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 [2024-11-04 15:19:54,560 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 15:19:54,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 15:19:54,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1620527841, now seen corresponding path program 8 times [2024-11-04 15:19:54,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 15:19:54,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [269160413] [2024-11-04 15:19:54,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 15:19:54,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:19:54,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 15:19:54,562 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) [2024-11-04 15:19:54,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-04 15:19:56,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 15:19:56,507 INFO L255 TraceCheckSpWp]: Trace formula consists of 1792 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-04 15:19:56,512 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 15:19:56,528 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 112 proven. 4 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2024-11-04 15:19:56,528 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 15:19:56,603 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 356 trivial. 0 not checked. [2024-11-04 15:19:56,603 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 15:19:56,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [269160413] [2024-11-04 15:19:56,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [269160413] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-04 15:19:56,603 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-04 15:19:56,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 9 [2024-11-04 15:19:56,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579431163] [2024-11-04 15:19:56,603 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-04 15:19:56,604 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-04 15:19:56,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 15:19:56,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-04 15:19:56,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-11-04 15:19:56,604 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) [2024-11-04 15:19:56,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 15:19:56,679 INFO L93 Difference]: Finished difference Result 386 states and 452 transitions. [2024-11-04 15:19:56,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-04 15:19:56,680 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 [2024-11-04 15:19:56,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 15:19:56,682 INFO L225 Difference]: With dead ends: 386 [2024-11-04 15:19:56,682 INFO L226 Difference]: Without dead ends: 221 [2024-11-04 15:19:56,683 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 415 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-11-04 15:19:56,684 INFO L432 NwaCegarLoop]: 94 mSDtfsCounter, 4 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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, 0.0s IncrementalHoareTripleChecker+Time [2024-11-04 15:19:56,684 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 549 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-04 15:19:56,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2024-11-04 15:19:56,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2024-11-04 15:19:56,700 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) [2024-11-04 15:19:56,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 258 transitions. [2024-11-04 15:19:56,702 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 258 transitions. Word has length 212 [2024-11-04 15:19:56,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 15:19:56,702 INFO L471 AbstractCegarLoop]: Abstraction has 221 states and 258 transitions. [2024-11-04 15:19:56,702 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) [2024-11-04 15:19:56,702 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 258 transitions. [2024-11-04 15:19:56,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2024-11-04 15:19:56,703 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 15:19:56,704 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] [2024-11-04 15:19:56,746 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-11-04 15:19:56,904 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 [2024-11-04 15:19:56,904 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 15:19:56,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 15:19:56,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1868237669, now seen corresponding path program 9 times [2024-11-04 15:19:56,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 15:19:56,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1652607088] [2024-11-04 15:19:56,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 15:19:56,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:19:56,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 15:19:56,908 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) [2024-11-04 15:19:56,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-04 15:19:59,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 15:19:59,123 INFO L255 TraceCheckSpWp]: Trace formula consists of 1804 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-04 15:19:59,127 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 15:19:59,144 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 112 proven. 4 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2024-11-04 15:19:59,144 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 15:19:59,208 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked. [2024-11-04 15:19:59,208 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 15:19:59,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1652607088] [2024-11-04 15:19:59,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1652607088] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-04 15:19:59,209 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-04 15:19:59,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 9 [2024-11-04 15:19:59,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524394638] [2024-11-04 15:19:59,209 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-04 15:19:59,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-04 15:19:59,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 15:19:59,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-04 15:19:59,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-11-04 15:19:59,210 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) [2024-11-04 15:19:59,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 15:19:59,305 INFO L93 Difference]: Finished difference Result 402 states and 470 transitions. [2024-11-04 15:19:59,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-04 15:19:59,306 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 [2024-11-04 15:19:59,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 15:19:59,308 INFO L225 Difference]: With dead ends: 402 [2024-11-04 15:19:59,308 INFO L226 Difference]: Without dead ends: 229 [2024-11-04 15:19:59,308 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 [2024-11-04 15:19:59,309 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, 0.1s IncrementalHoareTripleChecker+Time [2024-11-04 15:19:59,309 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 367 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-04 15:19:59,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2024-11-04 15:19:59,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2024-11-04 15:19:59,323 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) [2024-11-04 15:19:59,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 267 transitions. [2024-11-04 15:19:59,325 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 267 transitions. Word has length 216 [2024-11-04 15:19:59,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 15:19:59,326 INFO L471 AbstractCegarLoop]: Abstraction has 229 states and 267 transitions. [2024-11-04 15:19:59,326 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) [2024-11-04 15:19:59,326 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 267 transitions. [2024-11-04 15:19:59,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2024-11-04 15:19:59,327 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 15:19:59,327 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] [2024-11-04 15:19:59,372 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-11-04 15:19:59,528 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 [2024-11-04 15:19:59,528 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 15:19:59,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 15:19:59,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1664465769, now seen corresponding path program 10 times [2024-11-04 15:19:59,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 15:19:59,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [558662805] [2024-11-04 15:19:59,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 15:19:59,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:19:59,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 15:19:59,530 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) [2024-11-04 15:19:59,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-04 15:20:01,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 15:20:01,715 INFO L255 TraceCheckSpWp]: Trace formula consists of 1816 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-04 15:20:01,724 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 15:20:02,721 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 12 proven. 31 refuted. 0 times theorem prover too weak. 353 trivial. 0 not checked. [2024-11-04 15:20:02,721 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 15:20:05,604 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 15 proven. 28 refuted. 0 times theorem prover too weak. 353 trivial. 0 not checked. [2024-11-04 15:20:05,605 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 15:20:05,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [558662805] [2024-11-04 15:20:05,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [558662805] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-04 15:20:05,605 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-04 15:20:05,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 26 [2024-11-04 15:20:05,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771023958] [2024-11-04 15:20:05,605 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-04 15:20:05,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-04 15:20:05,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 15:20:05,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-04 15:20:05,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=561, Unknown=0, NotChecked=0, Total=650 [2024-11-04 15:20:05,607 INFO L87 Difference]: Start difference. First operand 229 states and 267 transitions. Second operand has 26 states, 24 states have (on average 7.916666666666667) internal successors, (190), 25 states have internal predecessors, (190), 6 states have call successors, (20), 1 states have call predecessors, (20), 2 states have return successors, (20), 6 states have call predecessors, (20), 6 states have call successors, (20) [2024-11-04 15:20:06,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 15:20:06,697 INFO L93 Difference]: Finished difference Result 452 states and 526 transitions. [2024-11-04 15:20:06,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-04 15:20:06,697 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 7.916666666666667) internal successors, (190), 25 states have internal predecessors, (190), 6 states have call successors, (20), 1 states have call predecessors, (20), 2 states have return successors, (20), 6 states have call predecessors, (20), 6 states have call successors, (20) Word has length 220 [2024-11-04 15:20:06,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 15:20:06,699 INFO L225 Difference]: With dead ends: 452 [2024-11-04 15:20:06,699 INFO L226 Difference]: Without dead ends: 450 [2024-11-04 15:20:06,700 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 446 GetRequests, 414 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=180, Invalid=942, Unknown=0, NotChecked=0, Total=1122 [2024-11-04 15:20:06,701 INFO L432 NwaCegarLoop]: 100 mSDtfsCounter, 293 mSDsluCounter, 1329 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 1429 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-04 15:20:06,701 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 1429 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 569 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-04 15:20:06,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2024-11-04 15:20:06,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 404. [2024-11-04 15:20:06,730 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) [2024-11-04 15:20:06,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 471 transitions. [2024-11-04 15:20:06,733 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 471 transitions. Word has length 220 [2024-11-04 15:20:06,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 15:20:06,733 INFO L471 AbstractCegarLoop]: Abstraction has 404 states and 471 transitions. [2024-11-04 15:20:06,733 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 7.916666666666667) internal successors, (190), 25 states have internal predecessors, (190), 6 states have call successors, (20), 1 states have call predecessors, (20), 2 states have return successors, (20), 6 states have call predecessors, (20), 6 states have call successors, (20) [2024-11-04 15:20:06,733 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 471 transitions. [2024-11-04 15:20:06,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2024-11-04 15:20:06,738 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 15:20:06,738 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] [2024-11-04 15:20:06,779 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2024-11-04 15:20:06,939 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 [2024-11-04 15:20:06,939 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 15:20:06,939 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 15:20:06,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1966397108, now seen corresponding path program 11 times [2024-11-04 15:20:06,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 15:20:06,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [54354889] [2024-11-04 15:20:06,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 15:20:06,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:20:06,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 15:20:06,941 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) [2024-11-04 15:20:06,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-04 15:20:09,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 15:20:10,015 INFO L255 TraceCheckSpWp]: Trace formula consists of 3165 conjuncts, 405 conjuncts are in the unsatisfiable core [2024-11-04 15:20:10,050 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 15:20:31,370 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9