/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_amount250_file-53.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-03 12:51:37,526 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-03 12:51:37,573 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 12:51:37,579 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-03 12:51:37,579 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-03 12:51:37,599 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-03 12:51:37,600 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-03 12:51:37,600 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-03 12:51:37,601 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-03 12:51:37,601 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-03 12:51:37,601 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-03 12:51:37,601 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-03 12:51:37,602 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-03 12:51:37,602 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-03 12:51:37,602 INFO L153 SettingsManager]: * Use SBE=true [2024-11-03 12:51:37,602 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-03 12:51:37,603 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-03 12:51:37,603 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-03 12:51:37,603 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-03 12:51:37,603 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-03 12:51:37,603 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-03 12:51:37,604 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-03 12:51:37,604 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-03 12:51:37,604 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-03 12:51:37,605 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-03 12:51:37,605 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-03 12:51:37,605 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-03 12:51:37,605 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-03 12:51:37,605 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-03 12:51:37,606 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-03 12:51:37,606 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-03 12:51:37,606 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-03 12:51:37,606 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-03 12:51:37,607 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-03 12:51:37,607 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 12:51:37,607 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-03 12:51:37,607 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-03 12:51:37,607 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-03 12:51:37,608 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-03 12:51:37,608 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-03 12:51:37,608 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-03 12:51:37,608 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-03 12:51:37,608 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-03 12:51:37,609 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-03 12:51:37,609 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> bitwuzla [2024-11-03 12:51:37,801 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-03 12:51:37,828 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-03 12:51:37,833 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-03 12:51:37,835 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-03 12:51:37,835 INFO L274 PluginConnector]: CDTParser initialized [2024-11-03 12:51:37,837 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-53.i [2024-11-03 12:51:39,237 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-03 12:51:39,456 INFO L384 CDTParser]: Found 1 translation units. [2024-11-03 12:51:39,457 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-53.i [2024-11-03 12:51:39,469 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/449efa875/0f124a94c77448a7aebb673dea00530e/FLAGa11f9ce3a [2024-11-03 12:51:39,480 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/449efa875/0f124a94c77448a7aebb673dea00530e [2024-11-03 12:51:39,482 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-03 12:51:39,483 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-03 12:51:39,484 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-03 12:51:39,484 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-03 12:51:39,488 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-03 12:51:39,489 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 12:51:39" (1/1) ... [2024-11-03 12:51:39,489 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29f925f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:51:39, skipping insertion in model container [2024-11-03 12:51:39,490 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 12:51:39" (1/1) ... [2024-11-03 12:51:39,521 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-03 12:51:39,637 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_amount250_file-53.i[916,929] [2024-11-03 12:51:39,754 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 12:51:39,777 INFO L200 MainTranslator]: Completed pre-run [2024-11-03 12:51:39,789 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_amount250_file-53.i[916,929] [2024-11-03 12:51:39,854 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 12:51:39,880 INFO L204 MainTranslator]: Completed translation [2024-11-03 12:51:39,882 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:51:39 WrapperNode [2024-11-03 12:51:39,882 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-03 12:51:39,883 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-03 12:51:39,883 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-03 12:51:39,883 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-03 12:51:39,888 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:51:39" (1/1) ... [2024-11-03 12:51:39,906 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:51:39" (1/1) ... [2024-11-03 12:51:39,947 INFO L138 Inliner]: procedures = 27, calls = 58, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 363 [2024-11-03 12:51:39,948 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-03 12:51:39,948 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-03 12:51:39,948 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-03 12:51:39,948 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-03 12:51:39,975 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:51:39" (1/1) ... [2024-11-03 12:51:39,976 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:51:39" (1/1) ... [2024-11-03 12:51:39,985 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:51:39" (1/1) ... [2024-11-03 12:51:40,020 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 12:51:40,021 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:51:39" (1/1) ... [2024-11-03 12:51:40,021 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:51:39" (1/1) ... [2024-11-03 12:51:40,043 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:51:39" (1/1) ... [2024-11-03 12:51:40,051 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:51:39" (1/1) ... [2024-11-03 12:51:40,058 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:51:39" (1/1) ... [2024-11-03 12:51:40,065 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:51:39" (1/1) ... [2024-11-03 12:51:40,075 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-03 12:51:40,076 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-03 12:51:40,076 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-03 12:51:40,076 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-03 12:51:40,077 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:51:39" (1/1) ... [2024-11-03 12:51:40,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 12:51:40,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 12:51:40,110 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 12:51:40,113 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 12:51:40,133 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-03 12:51:40,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-03 12:51:40,134 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-03 12:51:40,134 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-03 12:51:40,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-03 12:51:40,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-03 12:51:40,254 INFO L238 CfgBuilder]: Building ICFG [2024-11-03 12:51:40,256 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-03 12:52:10,480 INFO L? ?]: Removed 47 outVars from TransFormulas that were not future-live. [2024-11-03 12:52:10,481 INFO L287 CfgBuilder]: Performing block encoding [2024-11-03 12:52:10,494 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-03 12:52:10,494 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-03 12:52:10,494 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 12:52:10 BoogieIcfgContainer [2024-11-03 12:52:10,494 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-03 12:52:10,496 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-03 12:52:10,496 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-03 12:52:10,499 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-03 12:52:10,499 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 12:51:39" (1/3) ... [2024-11-03 12:52:10,500 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a591103 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 12:52:10, skipping insertion in model container [2024-11-03 12:52:10,500 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:51:39" (2/3) ... [2024-11-03 12:52:10,500 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a591103 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 12:52:10, skipping insertion in model container [2024-11-03 12:52:10,500 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 12:52:10" (3/3) ... [2024-11-03 12:52:10,501 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-53.i [2024-11-03 12:52:10,515 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-03 12:52:10,516 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-03 12:52:10,564 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-03 12:52:10,568 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;@322fa92c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-03 12:52:10,569 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-03 12:52:10,574 INFO L276 IsEmpty]: Start isEmpty. Operand has 151 states, 103 states have (on average 1.4854368932038835) internal successors, (153), 104 states have internal predecessors, (153), 45 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2024-11-03 12:52:10,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2024-11-03 12:52:10,591 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 12:52:10,592 INFO L215 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:52:10,592 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 12:52:10,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 12:52:10,597 INFO L85 PathProgramCache]: Analyzing trace with hash 711619995, now seen corresponding path program 1 times [2024-11-03 12:52:10,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 12:52:10,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [474138192] [2024-11-03 12:52:10,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 12:52:10,606 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 12:52:10,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:52:10,608 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 12:52:10,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Waiting until timeout for monitored process [2024-11-03 12:52:10,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 12:52:10,797 INFO L255 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-03 12:52:10,812 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 12:52:10,882 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 3872 trivial. 0 not checked. [2024-11-03 12:52:10,882 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 12:52:16,626 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 3872 trivial. 0 not checked. [2024-11-03 12:52:16,630 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 12:52:16,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [474138192] [2024-11-03 12:52:16,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [474138192] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 12:52:16,631 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 12:52:16,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2024-11-03 12:52:16,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236341061] [2024-11-03 12:52:16,633 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 12:52:16,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-03 12:52:16,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 12:52:16,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-03 12:52:16,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-03 12:52:16,667 INFO L87 Difference]: Start difference. First operand has 151 states, 103 states have (on average 1.4854368932038835) internal successors, (153), 104 states have internal predecessors, (153), 45 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) Second operand has 2 states, 2 states have (on average 40.0) internal successors, (80), 2 states have internal predecessors, (80), 1 states have call successors, (45), 1 states have call predecessors, (45), 2 states have return successors, (45), 2 states have call predecessors, (45), 1 states have call successors, (45) [2024-11-03 12:52:16,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 12:52:16,718 INFO L93 Difference]: Finished difference Result 293 states and 521 transitions. [2024-11-03 12:52:16,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-03 12:52:16,721 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 40.0) internal successors, (80), 2 states have internal predecessors, (80), 1 states have call successors, (45), 1 states have call predecessors, (45), 2 states have return successors, (45), 2 states have call predecessors, (45), 1 states have call successors, (45) Word has length 300 [2024-11-03 12:52:16,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 12:52:16,728 INFO L225 Difference]: With dead ends: 293 [2024-11-03 12:52:16,728 INFO L226 Difference]: Without dead ends: 145 [2024-11-03 12:52:16,732 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 598 GetRequests, 598 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 12:52:16,734 INFO L432 NwaCegarLoop]: 231 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, 231 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 12:52:16,735 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 12:52:16,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2024-11-03 12:52:16,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2024-11-03 12:52:16,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 98 states have (on average 1.4387755102040816) internal successors, (141), 98 states have internal predecessors, (141), 45 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2024-11-03 12:52:16,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 231 transitions. [2024-11-03 12:52:16,788 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 231 transitions. Word has length 300 [2024-11-03 12:52:16,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 12:52:16,789 INFO L471 AbstractCegarLoop]: Abstraction has 145 states and 231 transitions. [2024-11-03 12:52:16,789 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 40.0) internal successors, (80), 2 states have internal predecessors, (80), 1 states have call successors, (45), 1 states have call predecessors, (45), 2 states have return successors, (45), 2 states have call predecessors, (45), 1 states have call successors, (45) [2024-11-03 12:52:16,790 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 231 transitions. [2024-11-03 12:52:16,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2024-11-03 12:52:16,796 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 12:52:16,796 INFO L215 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:52:16,807 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Forceful destruction successful, exit code 0 [2024-11-03 12:52:16,997 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:52:16,998 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 12:52:16,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 12:52:16,999 INFO L85 PathProgramCache]: Analyzing trace with hash -693088039, now seen corresponding path program 1 times [2024-11-03 12:52:16,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 12:52:16,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [426985786] [2024-11-03 12:52:16,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 12:52:17,000 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 12:52:17,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:52:17,003 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 12:52:17,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Waiting until timeout for monitored process [2024-11-03 12:52:17,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 12:52:17,175 INFO L255 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-03 12:52:17,191 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 12:52:24,454 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 1892 proven. 48 refuted. 0 times theorem prover too weak. 2020 trivial. 0 not checked. [2024-11-03 12:52:24,455 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 12:52:33,913 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 84 proven. 48 refuted. 0 times theorem prover too weak. 3828 trivial. 0 not checked. [2024-11-03 12:52:33,913 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 12:52:33,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [426985786] [2024-11-03 12:52:33,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [426985786] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 12:52:33,914 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 12:52:33,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2024-11-03 12:52:33,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465811317] [2024-11-03 12:52:33,914 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 12:52:33,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-03 12:52:33,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 12:52:33,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-03 12:52:33,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-03 12:52:33,919 INFO L87 Difference]: Start difference. First operand 145 states and 231 transitions. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 2 states have call successors, (61), 2 states have call predecessors, (61), 4 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) [2024-11-03 12:52:47,060 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.74s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 12:52:51,063 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 12:52:55,065 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 12:52:55,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 12:52:55,068 INFO L93 Difference]: Finished difference Result 293 states and 464 transitions. [2024-11-03 12:52:55,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-03 12:52:55,345 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 2 states have call successors, (61), 2 states have call predecessors, (61), 4 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) Word has length 300 [2024-11-03 12:52:55,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 12:52:55,348 INFO L225 Difference]: With dead ends: 293 [2024-11-03 12:52:55,348 INFO L226 Difference]: Without dead ends: 151 [2024-11-03 12:52:55,349 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 601 GetRequests, 592 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2024-11-03 12:52:55,350 INFO L432 NwaCegarLoop]: 180 mSDtfsCounter, 273 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 64 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.4s IncrementalHoareTripleChecker+Time [2024-11-03 12:52:55,350 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [301 Valid, 446 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 238 Invalid, 3 Unknown, 0 Unchecked, 20.4s Time] [2024-11-03 12:52:55,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2024-11-03 12:52:55,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 149. [2024-11-03 12:52:55,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 101 states have (on average 1.4158415841584158) internal successors, (143), 101 states have internal predecessors, (143), 45 states have call successors, (45), 2 states have call predecessors, (45), 2 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2024-11-03 12:52:55,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 233 transitions. [2024-11-03 12:52:55,371 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 233 transitions. Word has length 300 [2024-11-03 12:52:55,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 12:52:55,372 INFO L471 AbstractCegarLoop]: Abstraction has 149 states and 233 transitions. [2024-11-03 12:52:55,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 2 states have call successors, (61), 2 states have call predecessors, (61), 4 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) [2024-11-03 12:52:55,374 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 233 transitions. [2024-11-03 12:52:55,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2024-11-03 12:52:55,377 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 12:52:55,378 INFO L215 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:52:55,386 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Forceful destruction successful, exit code 0 [2024-11-03 12:52:55,581 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:52:55,582 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 12:52:55,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 12:52:55,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1861138089, now seen corresponding path program 1 times [2024-11-03 12:52:55,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 12:52:55,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1321852948] [2024-11-03 12:52:55,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 12:52:55,584 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 12:52:55,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:52:55,586 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 12:52:55,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Waiting until timeout for monitored process [2024-11-03 12:52:55,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 12:52:55,734 INFO L255 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-03 12:52:55,743 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 12:53:12,522 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-11-03 12:53:12,523 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 12:53:23,813 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-11-03 12:53:23,816 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 12:53:23,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1321852948] [2024-11-03 12:53:23,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1321852948] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 12:53:23,816 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 12:53:23,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 4 [2024-11-03 12:53:23,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126578339] [2024-11-03 12:53:23,817 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 12:53:23,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 12:53:23,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 12:53:23,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 12:53:23,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-03 12:53:23,820 INFO L87 Difference]: Start difference. First operand 149 states and 233 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 1 states have call successors, (90), 2 states have call predecessors, (90), 2 states have return successors, (90), 1 states have call predecessors, (90), 1 states have call successors, (90)