/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-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-89.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-03 13:21:45,252 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-03 13:21:45,318 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-03 13:21:45,323 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-03 13:21:45,323 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-03 13:21:45,352 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-03 13:21:45,353 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-03 13:21:45,353 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-03 13:21:45,354 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-03 13:21:45,355 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-03 13:21:45,355 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-03 13:21:45,355 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-03 13:21:45,357 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-03 13:21:45,358 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-03 13:21:45,358 INFO L153 SettingsManager]: * Use SBE=true [2024-11-03 13:21:45,358 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-03 13:21:45,358 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-03 13:21:45,359 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-03 13:21:45,359 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-03 13:21:45,363 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-03 13:21:45,363 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-03 13:21:45,364 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-03 13:21:45,364 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-03 13:21:45,364 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-03 13:21:45,364 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-03 13:21:45,364 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-03 13:21:45,364 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-03 13:21:45,365 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-03 13:21:45,365 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-03 13:21:45,365 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-03 13:21:45,365 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-03 13:21:45,366 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-03 13:21:45,366 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-03 13:21:45,366 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-03 13:21:45,366 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 13:21:45,366 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-03 13:21:45,367 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-03 13:21:45,367 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-03 13:21:45,367 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-03 13:21:45,367 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-03 13:21:45,367 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-03 13:21:45,368 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-03 13:21:45,368 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-03 13:21:45,369 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-03 13:21:45,369 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> bitwuzla [2024-11-03 13:21:45,630 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-03 13:21:45,652 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-03 13:21:45,656 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-03 13:21:45,657 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-03 13:21:45,658 INFO L274 PluginConnector]: CDTParser initialized [2024-11-03 13:21:45,659 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-89.i [2024-11-03 13:21:47,011 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-03 13:21:47,310 INFO L384 CDTParser]: Found 1 translation units. [2024-11-03 13:21:47,311 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-89.i [2024-11-03 13:21:47,329 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4aaf76b35/7537721752954815afd5751ccba89117/FLAG998680b8a [2024-11-03 13:21:47,345 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4aaf76b35/7537721752954815afd5751ccba89117 [2024-11-03 13:21:47,350 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-03 13:21:47,351 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-03 13:21:47,355 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-03 13:21:47,355 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-03 13:21:47,364 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-03 13:21:47,365 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:21:47" (1/1) ... [2024-11-03 13:21:47,366 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1432a0ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:21:47, skipping insertion in model container [2024-11-03 13:21:47,366 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:21:47" (1/1) ... [2024-11-03 13:21:47,435 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-03 13:21:47,606 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-89.i[916,929] [2024-11-03 13:21:47,841 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 13:21:47,864 INFO L200 MainTranslator]: Completed pre-run [2024-11-03 13:21:47,878 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-89.i[916,929] [2024-11-03 13:21:48,014 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 13:21:48,044 INFO L204 MainTranslator]: Completed translation [2024-11-03 13:21:48,044 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:21:48 WrapperNode [2024-11-03 13:21:48,045 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-03 13:21:48,046 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-03 13:21:48,046 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-03 13:21:48,046 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-03 13:21:48,052 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:21:48" (1/1) ... [2024-11-03 13:21:48,077 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:21:48" (1/1) ... [2024-11-03 13:21:48,143 INFO L138 Inliner]: procedures = 27, calls = 98, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 640 [2024-11-03 13:21:48,144 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-03 13:21:48,144 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-03 13:21:48,144 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-03 13:21:48,145 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-03 13:21:48,154 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:21:48" (1/1) ... [2024-11-03 13:21:48,154 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:21:48" (1/1) ... [2024-11-03 13:21:48,176 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:21:48" (1/1) ... [2024-11-03 13:21:48,213 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-03 13:21:48,214 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:21:48" (1/1) ... [2024-11-03 13:21:48,214 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:21:48" (1/1) ... [2024-11-03 13:21:48,249 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:21:48" (1/1) ... [2024-11-03 13:21:48,264 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:21:48" (1/1) ... [2024-11-03 13:21:48,278 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:21:48" (1/1) ... [2024-11-03 13:21:48,287 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:21:48" (1/1) ... [2024-11-03 13:21:48,301 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-03 13:21:48,301 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-03 13:21:48,302 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-03 13:21:48,302 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-03 13:21:48,304 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:21:48" (1/1) ... [2024-11-03 13:21:48,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 13:21:48,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 13:21:48,332 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) [2024-11-03 13:21:48,337 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 [2024-11-03 13:21:48,361 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-03 13:21:48,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-03 13:21:48,361 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-03 13:21:48,361 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-03 13:21:48,361 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-03 13:21:48,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-03 13:21:48,488 INFO L238 CfgBuilder]: Building ICFG [2024-11-03 13:21:48,490 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-03 13:22:23,298 INFO L? ?]: Removed 76 outVars from TransFormulas that were not future-live. [2024-11-03 13:22:23,298 INFO L287 CfgBuilder]: Performing block encoding [2024-11-03 13:22:23,320 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-03 13:22:23,321 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-03 13:22:23,321 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:22:23 BoogieIcfgContainer [2024-11-03 13:22:23,321 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-03 13:22:23,324 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-03 13:22:23,324 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-03 13:22:23,326 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-03 13:22:23,326 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:21:47" (1/3) ... [2024-11-03 13:22:23,327 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7815adac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:22:23, skipping insertion in model container [2024-11-03 13:22:23,327 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:21:48" (2/3) ... [2024-11-03 13:22:23,328 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7815adac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:22:23, skipping insertion in model container [2024-11-03 13:22:23,328 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:22:23" (3/3) ... [2024-11-03 13:22:23,329 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount500_file-89.i [2024-11-03 13:22:23,342 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-03 13:22:23,342 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-03 13:22:23,416 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-03 13:22:23,421 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;@6c823281, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-03 13:22:23,422 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-03 13:22:23,429 INFO L276 IsEmpty]: Start isEmpty. Operand has 262 states, 174 states have (on average 1.5344827586206897) internal successors, (267), 175 states have internal predecessors, (267), 85 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 85 states have call predecessors, (85), 85 states have call successors, (85) [2024-11-03 13:22:23,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 557 [2024-11-03 13:22:23,489 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:22:23,491 INFO L215 NwaCegarLoop]: trace histogram [85, 85, 85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:22:23,491 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:22:23,497 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:22:23,498 INFO L85 PathProgramCache]: Analyzing trace with hash -2145762680, now seen corresponding path program 1 times [2024-11-03 13:22:23,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:22:23,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1366940630] [2024-11-03 13:22:23,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:22:23,508 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:22:23,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:22:23,511 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:22:23,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Waiting until timeout for monitored process [2024-11-03 13:22:23,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:22:23,844 INFO L255 TraceCheckSpWp]: Trace formula consists of 960 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-03 13:22:23,866 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:22:23,949 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 168 proven. 0 refuted. 0 times theorem prover too weak. 14112 trivial. 0 not checked. [2024-11-03 13:22:23,949 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:22:32,326 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 168 proven. 0 refuted. 0 times theorem prover too weak. 14112 trivial. 0 not checked. [2024-11-03 13:22:32,327 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:22:32,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1366940630] [2024-11-03 13:22:32,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1366940630] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:22:32,328 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:22:32,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2024-11-03 13:22:32,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489408831] [2024-11-03 13:22:32,331 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:22:32,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-03 13:22:32,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:22:32,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-03 13:22:32,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-03 13:22:32,360 INFO L87 Difference]: Start difference. First operand has 262 states, 174 states have (on average 1.5344827586206897) internal successors, (267), 175 states have internal predecessors, (267), 85 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 85 states have call predecessors, (85), 85 states have call successors, (85) Second operand has 2 states, 2 states have (on average 68.0) internal successors, (136), 2 states have internal predecessors, (136), 1 states have call successors, (85), 1 states have call predecessors, (85), 2 states have return successors, (85), 2 states have call predecessors, (85), 1 states have call successors, (85) [2024-11-03 13:22:32,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:22:32,411 INFO L93 Difference]: Finished difference Result 517 states and 953 transitions. [2024-11-03 13:22:32,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-03 13:22:32,414 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 68.0) internal successors, (136), 2 states have internal predecessors, (136), 1 states have call successors, (85), 1 states have call predecessors, (85), 2 states have return successors, (85), 2 states have call predecessors, (85), 1 states have call successors, (85) Word has length 556 [2024-11-03 13:22:32,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:22:32,425 INFO L225 Difference]: With dead ends: 517 [2024-11-03 13:22:32,425 INFO L226 Difference]: Without dead ends: 258 [2024-11-03 13:22:32,431 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1110 GetRequests, 1110 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-03 13:22:32,434 INFO L432 NwaCegarLoop]: 429 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, 429 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 [2024-11-03 13:22:32,435 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 13:22:32,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2024-11-03 13:22:32,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 258. [2024-11-03 13:22:32,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 171 states have (on average 1.5146198830409356) internal successors, (259), 171 states have internal predecessors, (259), 85 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 85 states have call predecessors, (85), 85 states have call successors, (85) [2024-11-03 13:22:32,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 429 transitions. [2024-11-03 13:22:32,537 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 429 transitions. Word has length 556 [2024-11-03 13:22:32,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:22:32,538 INFO L471 AbstractCegarLoop]: Abstraction has 258 states and 429 transitions. [2024-11-03 13:22:32,539 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 68.0) internal successors, (136), 2 states have internal predecessors, (136), 1 states have call successors, (85), 1 states have call predecessors, (85), 2 states have return successors, (85), 2 states have call predecessors, (85), 1 states have call successors, (85) [2024-11-03 13:22:32,539 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 429 transitions. [2024-11-03 13:22:32,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 557 [2024-11-03 13:22:32,557 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:22:32,557 INFO L215 NwaCegarLoop]: trace histogram [85, 85, 85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:22:32,563 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Ended with exit code 0 [2024-11-03 13:22:32,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:22:32,759 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:22:32,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:22:32,760 INFO L85 PathProgramCache]: Analyzing trace with hash -855840870, now seen corresponding path program 1 times [2024-11-03 13:22:32,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:22:32,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2043485136] [2024-11-03 13:22:32,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:22:32,761 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:22:32,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:22:32,763 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:22:32,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Waiting until timeout for monitored process [2024-11-03 13:22:33,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:22:33,099 INFO L255 TraceCheckSpWp]: Trace formula consists of 960 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-03 13:22:33,114 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:22:56,928 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 1372 proven. 240 refuted. 0 times theorem prover too weak. 12668 trivial. 0 not checked. [2024-11-03 13:22:56,929 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:23:14,623 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 12 proven. 240 refuted. 0 times theorem prover too weak. 14028 trivial. 0 not checked. [2024-11-03 13:23:14,624 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:23:14,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2043485136] [2024-11-03 13:23:14,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2043485136] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 13:23:14,624 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 13:23:14,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2024-11-03 13:23:14,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022480088] [2024-11-03 13:23:14,625 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 13:23:14,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-03 13:23:14,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:23:14,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-03 13:23:14,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-03 13:23:14,634 INFO L87 Difference]: Start difference. First operand 258 states and 429 transitions. Second operand has 7 states, 7 states have (on average 20.428571428571427) internal successors, (143), 7 states have internal predecessors, (143), 2 states have call successors, (165), 2 states have call predecessors, (165), 4 states have return successors, (166), 2 states have call predecessors, (166), 2 states have call successors, (166)