/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 bitwuzla -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/hardware-verification-array/btor2c-lazyMod.unsafe_arbitrated_fifos_n2d8w8.c -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-05 14:10:27,391 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-05 14:10:27,469 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf [2024-11-05 14:10:27,474 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-05 14:10:27,474 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-05 14:10:27,502 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-05 14:10:27,503 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-05 14:10:27,503 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-05 14:10:27,505 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-05 14:10:27,505 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-05 14:10:27,505 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-05 14:10:27,506 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-05 14:10:27,506 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-05 14:10:27,506 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-05 14:10:27,507 INFO L153 SettingsManager]: * Use SBE=true [2024-11-05 14:10:27,507 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-05 14:10:27,507 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-05 14:10:27,508 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-05 14:10:27,510 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-05 14:10:27,511 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-05 14:10:27,514 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-05 14:10:27,514 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-05 14:10:27,514 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-05 14:10:27,514 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-05 14:10:27,515 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-05 14:10:27,515 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-05 14:10:27,515 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-05 14:10:27,515 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-05 14:10:27,516 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-05 14:10:27,516 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-05 14:10:27,516 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-05 14:10:27,516 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-05 14:10:27,517 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-05 14:10:27,517 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-05 14:10:27,519 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-05 14:10:27,519 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-05 14:10:27,519 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-05 14:10:27,519 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-05 14:10:27,519 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-05 14:10:27,520 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-05 14:10:27,520 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-05 14:10:27,520 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> bitwuzla [2024-11-05 14:10:27,726 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-05 14:10:27,748 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-05 14:10:27,753 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-05 14:10:27,754 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-05 14:10:27,755 INFO L274 PluginConnector]: CDTParser initialized [2024-11-05 14:10:27,755 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-array/btor2c-lazyMod.unsafe_arbitrated_fifos_n2d8w8.c [2024-11-05 14:10:29,065 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-05 14:10:29,296 INFO L384 CDTParser]: Found 1 translation units. [2024-11-05 14:10:29,297 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-array/btor2c-lazyMod.unsafe_arbitrated_fifos_n2d8w8.c [2024-11-05 14:10:29,306 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2f7d2840/f2b769ad0e744e65b1fa3a237137f186/FLAGa4502188b [2024-11-05 14:10:29,317 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2f7d2840/f2b769ad0e744e65b1fa3a237137f186 [2024-11-05 14:10:29,318 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-05 14:10:29,320 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-05 14:10:29,322 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-05 14:10:29,322 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-05 14:10:29,325 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-05 14:10:29,326 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 02:10:29" (1/1) ... [2024-11-05 14:10:29,326 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f172fa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:10:29, skipping insertion in model container [2024-11-05 14:10:29,326 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 02:10:29" (1/1) ... [2024-11-05 14:10:29,372 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-05 14:10:29,556 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.unsafe_arbitrated_fifos_n2d8w8.c[1270,1283] [2024-11-05 14:10:29,758 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-05 14:10:29,767 INFO L200 MainTranslator]: Completed pre-run [2024-11-05 14:10:29,803 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.unsafe_arbitrated_fifos_n2d8w8.c[1270,1283] [2024-11-05 14:10:29,905 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-05 14:10:29,932 INFO L204 MainTranslator]: Completed translation [2024-11-05 14:10:29,933 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:10:29 WrapperNode [2024-11-05 14:10:29,933 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-05 14:10:29,934 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-05 14:10:29,934 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-05 14:10:29,934 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-05 14:10:29,945 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:10:29" (1/1) ... [2024-11-05 14:10:29,985 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:10:29" (1/1) ... [2024-11-05 14:10:30,058 INFO L138 Inliner]: procedures = 18, calls = 41, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 953 [2024-11-05 14:10:30,058 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-05 14:10:30,059 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-05 14:10:30,059 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-05 14:10:30,059 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-05 14:10:30,076 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:10:29" (1/1) ... [2024-11-05 14:10:30,077 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:10:29" (1/1) ... [2024-11-05 14:10:30,085 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:10:29" (1/1) ... [2024-11-05 14:10:30,122 INFO L175 MemorySlicer]: Split 20 memory accesses to 3 slices as follows [2, 9, 9]. 45 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 8 writes are split as follows [0, 4, 4]. [2024-11-05 14:10:30,122 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:10:29" (1/1) ... [2024-11-05 14:10:30,122 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:10:29" (1/1) ... [2024-11-05 14:10:30,155 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:10:29" (1/1) ... [2024-11-05 14:10:30,159 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:10:29" (1/1) ... [2024-11-05 14:10:30,163 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:10:29" (1/1) ... [2024-11-05 14:10:30,167 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:10:29" (1/1) ... [2024-11-05 14:10:30,175 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-05 14:10:30,176 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-05 14:10:30,176 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-05 14:10:30,176 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-05 14:10:30,177 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:10:29" (1/1) ... [2024-11-05 14:10:30,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-05 14:10:30,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-05 14:10:30,213 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) [2024-11-05 14:10:30,216 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 [2024-11-05 14:10:30,241 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-05 14:10:30,242 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2024-11-05 14:10:30,242 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2024-11-05 14:10:30,242 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2024-11-05 14:10:30,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-05 14:10:30,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-05 14:10:30,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-05 14:10:30,242 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-05 14:10:30,243 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-05 14:10:30,244 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-05 14:10:30,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-05 14:10:30,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-05 14:10:30,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0 [2024-11-05 14:10:30,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#1 [2024-11-05 14:10:30,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#2 [2024-11-05 14:10:30,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-05 14:10:30,506 INFO L238 CfgBuilder]: Building ICFG [2024-11-05 14:10:30,508 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-05 14:10:31,336 INFO L? ?]: Removed 675 outVars from TransFormulas that were not future-live. [2024-11-05 14:10:31,337 INFO L287 CfgBuilder]: Performing block encoding [2024-11-05 14:10:31,349 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-05 14:10:31,350 INFO L316 CfgBuilder]: Removed 7 assume(true) statements. [2024-11-05 14:10:31,350 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 02:10:31 BoogieIcfgContainer [2024-11-05 14:10:31,351 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-05 14:10:31,354 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-05 14:10:31,354 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-05 14:10:31,357 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-05 14:10:31,357 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 02:10:29" (1/3) ... [2024-11-05 14:10:31,359 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62f89b6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 02:10:31, skipping insertion in model container [2024-11-05 14:10:31,359 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:10:29" (2/3) ... [2024-11-05 14:10:31,360 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62f89b6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 02:10:31, skipping insertion in model container [2024-11-05 14:10:31,360 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 02:10:31" (3/3) ... [2024-11-05 14:10:31,361 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.unsafe_arbitrated_fifos_n2d8w8.c [2024-11-05 14:10:31,376 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-05 14:10:31,376 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-05 14:10:31,437 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-05 14:10:31,444 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;@36139de9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-05 14:10:31,444 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-05 14:10:31,448 INFO L276 IsEmpty]: Start isEmpty. Operand has 42 states, 34 states have (on average 1.4705882352941178) internal successors, (50), 35 states have internal predecessors, (50), 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) [2024-11-05 14:10:31,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-05 14:10:31,455 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:10:31,456 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] [2024-11-05 14:10:31,456 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:10:31,461 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:10:31,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1919498836, now seen corresponding path program 1 times [2024-11-05 14:10:31,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:10:31,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [755946975] [2024-11-05 14:10:31,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:10:31,474 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:10:31,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:10:31,477 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:10:31,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Waiting until timeout for monitored process [2024-11-05 14:10:31,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:10:31,855 INFO L255 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-05 14:10:31,861 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:10:31,882 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-05 14:10:31,882 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:10:31,913 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-05 14:10:31,914 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:10:31,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [755946975] [2024-11-05 14:10:31,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [755946975] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 14:10:31,915 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 14:10:31,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2024-11-05 14:10:31,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234220212] [2024-11-05 14:10:31,916 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 14:10:31,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-05 14:10:31,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:10:31,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-05 14:10:31,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-05 14:10:31,939 INFO L87 Difference]: Start difference. First operand has 42 states, 34 states have (on average 1.4705882352941178) internal successors, (50), 35 states have internal predecessors, (50), 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 9.5) internal successors, (19), 2 states have internal predecessors, (19), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-05 14:10:31,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:10:31,964 INFO L93 Difference]: Finished difference Result 77 states and 117 transitions. [2024-11-05 14:10:31,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-05 14:10:31,966 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 39 [2024-11-05 14:10:31,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:10:31,972 INFO L225 Difference]: With dead ends: 77 [2024-11-05 14:10:31,972 INFO L226 Difference]: Without dead ends: 39 [2024-11-05 14:10:31,976 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-05 14:10:31,980 INFO L432 NwaCegarLoop]: 49 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, 49 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 [2024-11-05 14:10:31,981 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-05 14:10:31,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-05 14:10:32,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2024-11-05 14:10:32,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 32 states have (on average 1.21875) internal successors, (39), 32 states have internal predecessors, (39), 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) [2024-11-05 14:10:32,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 49 transitions. [2024-11-05 14:10:32,015 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 49 transitions. Word has length 39 [2024-11-05 14:10:32,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:10:32,016 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 49 transitions. [2024-11-05 14:10:32,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-05 14:10:32,016 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 49 transitions. [2024-11-05 14:10:32,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-05 14:10:32,018 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:10:32,018 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] [2024-11-05 14:10:32,023 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Ended with exit code 0 [2024-11-05 14:10:32,218 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:10:32,219 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:10:32,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:10:32,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1633554172, now seen corresponding path program 1 times [2024-11-05 14:10:32,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:10:32,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [403993201] [2024-11-05 14:10:32,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:10:32,221 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:10:32,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:10:32,223 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:10:32,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Waiting until timeout for monitored process [2024-11-05 14:10:32,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:10:32,594 INFO L255 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-05 14:10:32,600 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:10:32,621 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-05 14:10:32,621 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:10:32,667 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-05 14:10:32,668 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:10:32,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [403993201] [2024-11-05 14:10:32,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [403993201] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 14:10:32,668 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 14:10:32,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-05 14:10:32,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342118989] [2024-11-05 14:10:32,668 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 14:10:32,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-05 14:10:32,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:10:32,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-05 14:10:32,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-05 14:10:32,671 INFO L87 Difference]: Start difference. First operand 39 states and 49 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 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) [2024-11-05 14:10:32,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:10:32,699 INFO L93 Difference]: Finished difference Result 77 states and 98 transitions. [2024-11-05 14:10:32,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-05 14:10:32,700 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 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 39 [2024-11-05 14:10:32,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:10:32,701 INFO L225 Difference]: With dead ends: 77 [2024-11-05 14:10:32,701 INFO L226 Difference]: Without dead ends: 42 [2024-11-05 14:10:32,702 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-05 14:10:32,703 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 2 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 135 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 [2024-11-05 14:10:32,703 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 135 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-05 14:10:32,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-11-05 14:10:32,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2024-11-05 14:10:32,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 35 states have (on average 1.2) internal successors, (42), 35 states have internal predecessors, (42), 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) [2024-11-05 14:10:32,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 52 transitions. [2024-11-05 14:10:32,709 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 52 transitions. Word has length 39 [2024-11-05 14:10:32,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:10:32,710 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 52 transitions. [2024-11-05 14:10:32,710 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 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) [2024-11-05 14:10:32,710 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 52 transitions. [2024-11-05 14:10:32,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-05 14:10:32,711 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:10:32,711 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] [2024-11-05 14:10:32,716 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Ended with exit code 0 [2024-11-05 14:10:32,916 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:10:32,917 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:10:32,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:10:32,918 INFO L85 PathProgramCache]: Analyzing trace with hash -682782464, now seen corresponding path program 1 times [2024-11-05 14:10:32,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:10:32,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [966151489] [2024-11-05 14:10:32,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:10:32,918 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:10:32,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:10:32,920 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:10:32,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Waiting until timeout for monitored process [2024-11-05 14:10:33,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:10:33,249 INFO L255 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-05 14:10:33,256 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:10:33,295 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-05 14:10:33,296 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:10:33,365 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-05 14:10:33,366 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:10:33,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [966151489] [2024-11-05 14:10:33,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [966151489] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 14:10:33,369 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 14:10:33,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-05 14:10:33,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483889086] [2024-11-05 14:10:33,369 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 14:10:33,369 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-05 14:10:33,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:10:33,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-05 14:10:33,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-05 14:10:33,370 INFO L87 Difference]: Start difference. First operand 42 states and 52 transitions. Second operand has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 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) [2024-11-05 14:10:33,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:10:33,468 INFO L93 Difference]: Finished difference Result 85 states and 108 transitions. [2024-11-05 14:10:33,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-05 14:10:33,470 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 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 43 [2024-11-05 14:10:33,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:10:33,471 INFO L225 Difference]: With dead ends: 85 [2024-11-05 14:10:33,471 INFO L226 Difference]: Without dead ends: 50 [2024-11-05 14:10:33,472 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2024-11-05 14:10:33,472 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 5 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-05 14:10:33,473 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 223 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-05 14:10:33,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-05 14:10:33,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2024-11-05 14:10:33,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 43 states have (on average 1.1627906976744187) internal successors, (50), 43 states have internal predecessors, (50), 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) [2024-11-05 14:10:33,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2024-11-05 14:10:33,484 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 43 [2024-11-05 14:10:33,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:10:33,485 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2024-11-05 14:10:33,485 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 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) [2024-11-05 14:10:33,485 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2024-11-05 14:10:33,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-05 14:10:33,488 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:10:33,488 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 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] [2024-11-05 14:10:33,494 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Forceful destruction successful, exit code 0 [2024-11-05 14:10:33,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:10:33,690 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:10:33,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:10:33,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1659549432, now seen corresponding path program 2 times [2024-11-05 14:10:33,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:10:33,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [945230099] [2024-11-05 14:10:33,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:10:33,691 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:10:33,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:10:33,693 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:10:33,694 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Waiting until timeout for monitored process [2024-11-05 14:10:34,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:10:34,009 INFO L255 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-05 14:10:34,013 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:10:34,077 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-05 14:10:34,077 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:10:34,208 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-05 14:10:34,208 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:10:34,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [945230099] [2024-11-05 14:10:34,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [945230099] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 14:10:34,209 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 14:10:34,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2024-11-05 14:10:34,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610617647] [2024-11-05 14:10:34,209 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 14:10:34,210 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-05 14:10:34,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:10:34,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-05 14:10:34,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2024-11-05 14:10:34,212 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 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) [2024-11-05 14:10:34,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:10:34,355 INFO L93 Difference]: Finished difference Result 89 states and 110 transitions. [2024-11-05 14:10:34,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-05 14:10:34,356 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 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 51 [2024-11-05 14:10:34,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:10:34,358 INFO L225 Difference]: With dead ends: 89 [2024-11-05 14:10:34,358 INFO L226 Difference]: Without dead ends: 54 [2024-11-05 14:10:34,358 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2024-11-05 14:10:34,359 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 2 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-05 14:10:34,359 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 355 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-05 14:10:34,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-05 14:10:34,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2024-11-05 14:10:34,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 47 states have (on average 1.148936170212766) internal successors, (54), 47 states have internal predecessors, (54), 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) [2024-11-05 14:10:34,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 64 transitions. [2024-11-05 14:10:34,371 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 64 transitions. Word has length 51 [2024-11-05 14:10:34,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:10:34,372 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 64 transitions. [2024-11-05 14:10:34,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 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) [2024-11-05 14:10:34,372 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 64 transitions. [2024-11-05 14:10:34,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-05 14:10:34,373 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:10:34,373 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 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] [2024-11-05 14:10:34,380 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Forceful destruction successful, exit code 0 [2024-11-05 14:10:34,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:10:34,574 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:10:34,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:10:34,575 INFO L85 PathProgramCache]: Analyzing trace with hash 488258804, now seen corresponding path program 3 times [2024-11-05 14:10:34,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:10:34,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1031572995] [2024-11-05 14:10:34,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:10:34,575 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:10:34,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:10:34,577 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:10:34,578 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (6)] Waiting until timeout for monitored process [2024-11-05 14:10:34,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:10:34,886 INFO L255 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-05 14:10:34,889 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:10:34,900 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-11-05 14:10:34,900 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:10:34,926 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-11-05 14:10:34,926 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:10:34,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1031572995] [2024-11-05 14:10:34,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1031572995] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 14:10:34,926 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 14:10:34,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-05 14:10:34,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66479635] [2024-11-05 14:10:34,927 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 14:10:34,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-05 14:10:34,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:10:34,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-05 14:10:34,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-05 14:10:34,929 INFO L87 Difference]: Start difference. First operand 54 states and 64 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) [2024-11-05 14:10:34,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:10:34,953 INFO L93 Difference]: Finished difference Result 89 states and 109 transitions. [2024-11-05 14:10:34,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-05 14:10:34,954 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 55 [2024-11-05 14:10:34,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:10:34,955 INFO L225 Difference]: With dead ends: 89 [2024-11-05 14:10:34,955 INFO L226 Difference]: Without dead ends: 57 [2024-11-05 14:10:34,955 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-05 14:10:34,956 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 3 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 90 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 [2024-11-05 14:10:34,956 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 90 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-05 14:10:34,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-11-05 14:10:34,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2024-11-05 14:10:34,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 50 states have (on average 1.14) internal successors, (57), 50 states have internal predecessors, (57), 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) [2024-11-05 14:10:34,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 67 transitions. [2024-11-05 14:10:34,970 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 67 transitions. Word has length 55 [2024-11-05 14:10:34,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:10:34,971 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 67 transitions. [2024-11-05 14:10:34,971 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) [2024-11-05 14:10:34,971 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 67 transitions. [2024-11-05 14:10:34,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-05 14:10:34,972 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:10:34,972 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 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] [2024-11-05 14:10:34,980 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (6)] Ended with exit code 0 [2024-11-05 14:10:35,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:10:35,178 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:10:35,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:10:35,178 INFO L85 PathProgramCache]: Analyzing trace with hash -526560144, now seen corresponding path program 1 times [2024-11-05 14:10:35,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:10:35,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1805102339] [2024-11-05 14:10:35,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:10:35,179 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:10:35,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:10:35,181 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:10:35,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (7)] Waiting until timeout for monitored process [2024-11-05 14:10:35,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:10:35,515 INFO L255 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-05 14:10:35,522 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:10:35,559 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-11-05 14:10:35,559 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:10:35,612 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-11-05 14:10:35,612 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:10:35,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1805102339] [2024-11-05 14:10:35,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1805102339] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 14:10:35,613 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 14:10:35,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-05 14:10:35,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687515870] [2024-11-05 14:10:35,613 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 14:10:35,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-05 14:10:35,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:10:35,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-05 14:10:35,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-05 14:10:35,617 INFO L87 Difference]: Start difference. First operand 57 states and 67 transitions. Second operand has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 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) [2024-11-05 14:10:35,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:10:35,681 INFO L93 Difference]: Finished difference Result 97 states and 119 transitions. [2024-11-05 14:10:35,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-05 14:10:35,686 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 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 59 [2024-11-05 14:10:35,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:10:35,686 INFO L225 Difference]: With dead ends: 97 [2024-11-05 14:10:35,686 INFO L226 Difference]: Without dead ends: 65 [2024-11-05 14:10:35,687 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2024-11-05 14:10:35,688 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 5 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-05 14:10:35,688 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 176 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-05 14:10:35,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-11-05 14:10:35,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2024-11-05 14:10:35,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 58 states have (on average 1.1206896551724137) internal successors, (65), 58 states have internal predecessors, (65), 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) [2024-11-05 14:10:35,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 75 transitions. [2024-11-05 14:10:35,696 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 75 transitions. Word has length 59 [2024-11-05 14:10:35,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:10:35,696 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 75 transitions. [2024-11-05 14:10:35,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 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) [2024-11-05 14:10:35,696 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 75 transitions. [2024-11-05 14:10:35,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-05 14:10:35,699 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:10:35,700 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 6, 6, 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] [2024-11-05 14:10:35,708 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (7)] Ended with exit code 0 [2024-11-05 14:10:35,900 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:10:35,901 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:10:35,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:10:35,901 INFO L85 PathProgramCache]: Analyzing trace with hash -47044248, now seen corresponding path program 2 times [2024-11-05 14:10:35,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:10:35,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1165045869] [2024-11-05 14:10:35,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:10:35,901 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:10:35,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:10:35,902 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:10:35,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (8)] Waiting until timeout for monitored process [2024-11-05 14:10:36,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:10:36,223 INFO L255 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-05 14:10:36,226 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:10:36,287 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-11-05 14:10:36,287 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:10:36,388 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-11-05 14:10:36,388 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:10:36,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1165045869] [2024-11-05 14:10:36,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1165045869] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 14:10:36,388 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 14:10:36,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2024-11-05 14:10:36,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462063235] [2024-11-05 14:10:36,389 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 14:10:36,389 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-05 14:10:36,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:10:36,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-05 14:10:36,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2024-11-05 14:10:36,390 INFO L87 Difference]: Start difference. First operand 65 states and 75 transitions. Second operand has 16 states, 16 states have (on average 3.0) internal successors, (48), 16 states have internal predecessors, (48), 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) [2024-11-05 14:10:36,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:10:36,515 INFO L93 Difference]: Finished difference Result 101 states and 121 transitions. [2024-11-05 14:10:36,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-05 14:10:36,516 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.0) internal successors, (48), 16 states have internal predecessors, (48), 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 67 [2024-11-05 14:10:36,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:10:36,516 INFO L225 Difference]: With dead ends: 101 [2024-11-05 14:10:36,517 INFO L226 Difference]: Without dead ends: 69 [2024-11-05 14:10:36,517 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2024-11-05 14:10:36,518 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 2 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-05 14:10:36,518 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 434 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-05 14:10:36,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-11-05 14:10:36,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2024-11-05 14:10:36,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 62 states have (on average 1.1129032258064515) internal successors, (69), 62 states have internal predecessors, (69), 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) [2024-11-05 14:10:36,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 79 transitions. [2024-11-05 14:10:36,526 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 79 transitions. Word has length 67 [2024-11-05 14:10:36,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:10:36,526 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 79 transitions. [2024-11-05 14:10:36,527 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.0) internal successors, (48), 16 states have internal predecessors, (48), 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) [2024-11-05 14:10:36,527 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 79 transitions. [2024-11-05 14:10:36,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-05 14:10:36,530 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:10:36,530 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 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] [2024-11-05 14:10:36,539 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (8)] Ended with exit code 0 [2024-11-05 14:10:36,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:10:36,731 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:10:36,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:10:36,731 INFO L85 PathProgramCache]: Analyzing trace with hash -515774748, now seen corresponding path program 3 times [2024-11-05 14:10:36,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:10:36,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1396513883] [2024-11-05 14:10:36,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:10:36,732 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:10:36,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:10:36,734 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:10:36,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (9)] Waiting until timeout for monitored process [2024-11-05 14:10:37,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:10:37,058 INFO L255 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 103 conjuncts are in the unsatisfiable core [2024-11-05 14:10:37,070 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:10:37,181 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 16 treesize of output 12 [2024-11-05 14:10:37,378 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2024-11-05 14:10:37,561 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-05 14:10:37,561 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 43 [2024-11-05 14:10:37,781 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-05 14:10:37,782 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 58 [2024-11-05 14:10:38,063 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-05 14:10:38,064 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 65 treesize of output 73 [2024-11-05 14:10:38,400 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-05 14:10:38,401 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 77 treesize of output 88 [2024-11-05 14:10:38,722 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-05 14:10:38,723 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 89 treesize of output 103 [2024-11-05 14:10:39,082 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-05 14:10:39,083 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 101 treesize of output 118 [2024-11-05 14:10:39,574 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 16 treesize of output 12 [2024-11-05 14:10:40,064 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2024-11-05 14:10:40,541 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-05 14:10:40,541 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 43 [2024-11-05 14:10:40,970 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-05 14:10:40,970 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 58 [2024-11-05 14:10:41,469 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-05 14:10:41,470 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 65 treesize of output 73 [2024-11-05 14:10:42,063 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-05 14:10:42,064 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 77 treesize of output 88 [2024-11-05 14:10:42,696 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-05 14:10:42,697 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 89 treesize of output 103 [2024-11-05 14:10:43,367 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-05 14:10:43,368 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 101 treesize of output 118 [2024-11-05 14:11:25,441 WARN L249 Executor]: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2024-11-05 14:11:25,441 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 101 [2024-11-05 14:11:25,441 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:11:25,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1396513883] [2024-11-05 14:11:25,442 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2024-11-05 14:11:25,447 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (9)] Forceful destruction successful, exit code 0 [2024-11-05 14:11:25,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:11:25,643 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:281) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.checkSat(ManagedScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:85) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:947) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:786) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:374) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:323) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:553) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:416) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:195) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:290) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:180) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:159) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:113) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:210) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:426) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:273) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 43 more [2024-11-05 14:11:25,647 INFO L158 Benchmark]: Toolchain (without parser) took 56327.27ms. Allocated memory was 196.1MB in the beginning and 442.5MB in the end (delta: 246.4MB). Free memory was 140.1MB in the beginning and 312.0MB in the end (delta: -171.8MB). Peak memory consumption was 75.7MB. Max. memory is 8.0GB. [2024-11-05 14:11:25,647 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 196.1MB. Free memory was 150.2MB in the beginning and 150.1MB in the end (delta: 143.4kB). There was no memory consumed. Max. memory is 8.0GB. [2024-11-05 14:11:25,647 INFO L158 Benchmark]: CACSL2BoogieTranslator took 611.38ms. Allocated memory was 196.1MB in the beginning and 341.8MB in the end (delta: 145.8MB). Free memory was 139.9MB in the beginning and 298.5MB in the end (delta: -158.6MB). Peak memory consumption was 31.2MB. Max. memory is 8.0GB. [2024-11-05 14:11:25,648 INFO L158 Benchmark]: Boogie Procedure Inliner took 124.62ms. Allocated memory is still 341.8MB. Free memory was 298.5MB in the beginning and 290.6MB in the end (delta: 7.9MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. [2024-11-05 14:11:25,648 INFO L158 Benchmark]: Boogie Preprocessor took 116.29ms. Allocated memory is still 341.8MB. Free memory was 290.6MB in the beginning and 281.2MB in the end (delta: 9.4MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2024-11-05 14:11:25,648 INFO L158 Benchmark]: RCFGBuilder took 1175.06ms. Allocated memory is still 341.8MB. Free memory was 281.2MB in the beginning and 181.0MB in the end (delta: 100.1MB). Peak memory consumption was 100.7MB. Max. memory is 8.0GB. [2024-11-05 14:11:25,648 INFO L158 Benchmark]: TraceAbstraction took 54292.65ms. Allocated memory was 341.8MB in the beginning and 442.5MB in the end (delta: 100.7MB). Free memory was 180.5MB in the beginning and 312.0MB in the end (delta: -131.5MB). There was no memory consumed. Max. memory is 8.0GB. [2024-11-05 14:11:25,650 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 196.1MB. Free memory was 150.2MB in the beginning and 150.1MB in the end (delta: 143.4kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 611.38ms. Allocated memory was 196.1MB in the beginning and 341.8MB in the end (delta: 145.8MB). Free memory was 139.9MB in the beginning and 298.5MB in the end (delta: -158.6MB). Peak memory consumption was 31.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 124.62ms. Allocated memory is still 341.8MB. Free memory was 298.5MB in the beginning and 290.6MB in the end (delta: 7.9MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. * Boogie Preprocessor took 116.29ms. Allocated memory is still 341.8MB. Free memory was 290.6MB in the beginning and 281.2MB in the end (delta: 9.4MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * RCFGBuilder took 1175.06ms. Allocated memory is still 341.8MB. Free memory was 281.2MB in the beginning and 181.0MB in the end (delta: 100.1MB). Peak memory consumption was 100.7MB. Max. memory is 8.0GB. * TraceAbstraction took 54292.65ms. Allocated memory was 341.8MB in the beginning and 442.5MB in the end (delta: 100.7MB). Free memory was 180.5MB in the beginning and 312.0MB in the end (delta: -131.5MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...