/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_amount100_file-93.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-03 12:39:27,527 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-03 12:39:27,588 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 12:39:27,593 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-03 12:39:27,593 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-03 12:39:27,616 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-03 12:39:27,616 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-03 12:39:27,617 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-03 12:39:27,617 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-03 12:39:27,620 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-03 12:39:27,620 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-03 12:39:27,620 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-03 12:39:27,621 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-03 12:39:27,621 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-03 12:39:27,621 INFO L153 SettingsManager]: * Use SBE=true [2024-11-03 12:39:27,621 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-03 12:39:27,621 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-03 12:39:27,621 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-03 12:39:27,622 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-03 12:39:27,622 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-03 12:39:27,622 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-03 12:39:27,623 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-03 12:39:27,624 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-03 12:39:27,624 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-03 12:39:27,624 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-03 12:39:27,624 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-03 12:39:27,624 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-03 12:39:27,624 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-03 12:39:27,624 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-03 12:39:27,625 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-03 12:39:27,625 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-03 12:39:27,625 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-03 12:39:27,625 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-03 12:39:27,626 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-03 12:39:27,626 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 12:39:27,626 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-03 12:39:27,626 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-03 12:39:27,626 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-03 12:39:27,626 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-03 12:39:27,626 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-03 12:39:27,626 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-03 12:39:27,627 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-03 12:39:27,627 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-03 12:39:27,627 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-03 12:39:27,627 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> bitwuzla [2024-11-03 12:39:27,805 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-03 12:39:27,823 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-03 12:39:27,825 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-03 12:39:27,826 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-03 12:39:27,826 INFO L274 PluginConnector]: CDTParser initialized [2024-11-03 12:39:27,827 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-93.i [2024-11-03 12:39:29,081 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-03 12:39:29,228 INFO L384 CDTParser]: Found 1 translation units. [2024-11-03 12:39:29,229 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-93.i [2024-11-03 12:39:29,237 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c4472561/cea2fbb35c9548159f79a4658aa9e3d0/FLAG3a2ba2c04 [2024-11-03 12:39:29,247 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c4472561/cea2fbb35c9548159f79a4658aa9e3d0 [2024-11-03 12:39:29,249 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-03 12:39:29,250 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-03 12:39:29,252 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-03 12:39:29,252 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-03 12:39:29,257 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-03 12:39:29,257 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 12:39:29" (1/1) ... [2024-11-03 12:39:29,258 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e1df7c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:39:29, skipping insertion in model container [2024-11-03 12:39:29,258 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 12:39:29" (1/1) ... [2024-11-03 12:39:29,284 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-03 12:39:29,410 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_amount100_file-93.i[916,929] [2024-11-03 12:39:29,485 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 12:39:29,496 INFO L200 MainTranslator]: Completed pre-run [2024-11-03 12:39:29,505 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_amount100_file-93.i[916,929] [2024-11-03 12:39:29,547 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 12:39:29,567 INFO L204 MainTranslator]: Completed translation [2024-11-03 12:39:29,568 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:39:29 WrapperNode [2024-11-03 12:39:29,568 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-03 12:39:29,569 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-03 12:39:29,569 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-03 12:39:29,569 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-03 12:39:29,574 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:39:29" (1/1) ... [2024-11-03 12:39:29,586 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:39:29" (1/1) ... [2024-11-03 12:39:29,607 INFO L138 Inliner]: procedures = 27, calls = 36, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 182 [2024-11-03 12:39:29,607 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-03 12:39:29,608 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-03 12:39:29,608 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-03 12:39:29,608 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-03 12:39:29,620 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:39:29" (1/1) ... [2024-11-03 12:39:29,621 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:39:29" (1/1) ... [2024-11-03 12:39:29,634 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:39:29" (1/1) ... [2024-11-03 12:39:29,652 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 12:39:29,653 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:39:29" (1/1) ... [2024-11-03 12:39:29,653 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:39:29" (1/1) ... [2024-11-03 12:39:29,663 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:39:29" (1/1) ... [2024-11-03 12:39:29,666 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:39:29" (1/1) ... [2024-11-03 12:39:29,668 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:39:29" (1/1) ... [2024-11-03 12:39:29,670 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:39:29" (1/1) ... [2024-11-03 12:39:29,674 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-03 12:39:29,678 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-03 12:39:29,678 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-03 12:39:29,678 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-03 12:39:29,678 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:39:29" (1/1) ... [2024-11-03 12:39:29,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 12:39:29,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 12:39:29,709 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 12:39:29,711 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 12:39:29,731 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-03 12:39:29,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-03 12:39:29,731 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-03 12:39:29,731 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-03 12:39:29,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-03 12:39:29,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-03 12:39:29,820 INFO L238 CfgBuilder]: Building ICFG [2024-11-03 12:39:29,822 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-03 12:39:33,307 INFO L? ?]: Removed 22 outVars from TransFormulas that were not future-live. [2024-11-03 12:39:33,307 INFO L287 CfgBuilder]: Performing block encoding [2024-11-03 12:39:33,316 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-03 12:39:33,317 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-03 12:39:33,317 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 12:39:33 BoogieIcfgContainer [2024-11-03 12:39:33,317 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-03 12:39:33,319 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-03 12:39:33,319 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-03 12:39:33,321 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-03 12:39:33,321 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 12:39:29" (1/3) ... [2024-11-03 12:39:33,322 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7404421a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 12:39:33, skipping insertion in model container [2024-11-03 12:39:33,322 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:39:29" (2/3) ... [2024-11-03 12:39:33,322 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7404421a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 12:39:33, skipping insertion in model container [2024-11-03 12:39:33,322 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 12:39:33" (3/3) ... [2024-11-03 12:39:33,323 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount100_file-93.i [2024-11-03 12:39:33,341 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-03 12:39:33,342 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-03 12:39:33,381 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-03 12:39:33,386 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;@5ba00222, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-03 12:39:33,386 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-03 12:39:33,389 INFO L276 IsEmpty]: Start isEmpty. Operand has 78 states, 52 states have (on average 1.4807692307692308) internal successors, (77), 53 states have internal predecessors, (77), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-03 12:39:33,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-11-03 12:39:33,400 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 12:39:33,400 INFO L215 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:39:33,400 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 12:39:33,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 12:39:33,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1471174150, now seen corresponding path program 1 times [2024-11-03 12:39:33,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 12:39:33,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1650469708] [2024-11-03 12:39:33,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 12:39:33,411 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 12:39:33,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:39:33,413 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 12:39:33,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Waiting until timeout for monitored process [2024-11-03 12:39:33,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 12:39:33,510 INFO L255 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-03 12:39:33,517 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 12:39:33,557 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 968 trivial. 0 not checked. [2024-11-03 12:39:33,557 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 12:39:33,826 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 968 trivial. 0 not checked. [2024-11-03 12:39:33,827 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 12:39:33,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1650469708] [2024-11-03 12:39:33,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1650469708] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 12:39:33,828 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 12:39:33,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2024-11-03 12:39:33,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557039576] [2024-11-03 12:39:33,831 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 12:39:33,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-03 12:39:33,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 12:39:33,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-03 12:39:33,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-03 12:39:33,854 INFO L87 Difference]: Start difference. First operand has 78 states, 52 states have (on average 1.4807692307692308) internal successors, (77), 53 states have internal predecessors, (77), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 1 states have call successors, (23), 1 states have call predecessors, (23), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-03 12:39:33,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 12:39:33,881 INFO L93 Difference]: Finished difference Result 147 states and 259 transitions. [2024-11-03 12:39:33,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-03 12:39:33,883 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 1 states have call successors, (23), 1 states have call predecessors, (23), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) Word has length 152 [2024-11-03 12:39:33,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 12:39:33,888 INFO L225 Difference]: With dead ends: 147 [2024-11-03 12:39:33,888 INFO L226 Difference]: Without dead ends: 72 [2024-11-03 12:39:33,890 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 302 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 12:39:33,892 INFO L432 NwaCegarLoop]: 111 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, 111 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 12:39:33,893 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 12:39:33,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-11-03 12:39:33,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2024-11-03 12:39:33,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 47 states have (on average 1.3829787234042554) internal successors, (65), 47 states have internal predecessors, (65), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-03 12:39:33,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 111 transitions. [2024-11-03 12:39:33,930 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 111 transitions. Word has length 152 [2024-11-03 12:39:33,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 12:39:33,930 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 111 transitions. [2024-11-03 12:39:33,931 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 1 states have call successors, (23), 1 states have call predecessors, (23), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-03 12:39:33,931 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 111 transitions. [2024-11-03 12:39:33,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-11-03 12:39:33,933 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 12:39:33,933 INFO L215 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:39:33,935 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Ended with exit code 0 [2024-11-03 12:39:34,135 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:39:34,135 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 12:39:34,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 12:39:34,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1497635520, now seen corresponding path program 1 times [2024-11-03 12:39:34,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 12:39:34,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1288931196] [2024-11-03 12:39:34,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 12:39:34,137 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 12:39:34,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:39:34,138 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 12:39:34,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Waiting until timeout for monitored process [2024-11-03 12:39:34,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 12:39:34,236 INFO L255 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-03 12:39:34,244 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 12:39:35,900 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-11-03 12:39:35,900 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 12:39:36,440 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-11-03 12:39:36,440 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 12:39:36,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1288931196] [2024-11-03 12:39:36,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1288931196] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 12:39:36,441 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 12:39:36,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [] total 8 [2024-11-03 12:39:36,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91313997] [2024-11-03 12:39:36,441 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 12:39:36,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-03 12:39:36,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 12:39:36,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-03 12:39:36,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-03 12:39:36,445 INFO L87 Difference]: Start difference. First operand 72 states and 111 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 2 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) [2024-11-03 12:39:41,319 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 12:39:45,779 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.24s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 12:39:45,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 12:39:45,780 INFO L93 Difference]: Finished difference Result 209 states and 324 transitions. [2024-11-03 12:39:45,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-03 12:39:45,813 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 2 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) Word has length 152 [2024-11-03 12:39:45,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 12:39:45,815 INFO L225 Difference]: With dead ends: 209 [2024-11-03 12:39:45,816 INFO L226 Difference]: Without dead ends: 140 [2024-11-03 12:39:45,816 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 298 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2024-11-03 12:39:45,817 INFO L432 NwaCegarLoop]: 98 mSDtfsCounter, 222 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 122 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2024-11-03 12:39:45,817 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 317 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 240 Invalid, 1 Unknown, 0 Unchecked, 9.1s Time] [2024-11-03 12:39:45,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2024-11-03 12:39:45,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 71. [2024-11-03 12:39:45,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 46 states have (on average 1.3478260869565217) internal successors, (62), 46 states have internal predecessors, (62), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-03 12:39:45,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 108 transitions. [2024-11-03 12:39:45,833 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 108 transitions. Word has length 152 [2024-11-03 12:39:45,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 12:39:45,834 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 108 transitions. [2024-11-03 12:39:45,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 2 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) [2024-11-03 12:39:45,836 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 108 transitions. [2024-11-03 12:39:45,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-11-03 12:39:45,840 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 12:39:45,840 INFO L215 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:39:45,844 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Forceful destruction successful, exit code 0 [2024-11-03 12:39:46,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:39:46,041 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 12:39:46,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 12:39:46,041 INFO L85 PathProgramCache]: Analyzing trace with hash -872464392, now seen corresponding path program 1 times [2024-11-03 12:39:46,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 12:39:46,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2145945444] [2024-11-03 12:39:46,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 12:39:46,042 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 12:39:46,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:39:46,043 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 12:39:46,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Waiting until timeout for monitored process [2024-11-03 12:39:46,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 12:39:46,093 INFO L255 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 12:39:46,096 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 12:39:46,726 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-11-03 12:39:46,726 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 12:39:47,168 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-11-03 12:39:47,168 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 12:39:47,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2145945444] [2024-11-03 12:39:47,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2145945444] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 12:39:47,169 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 12:39:47,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 3] imperfect sequences [] total 4 [2024-11-03 12:39:47,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628895114] [2024-11-03 12:39:47,169 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 12:39:47,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 12:39:47,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 12:39:47,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 12:39:47,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 12:39:47,171 INFO L87 Difference]: Start difference. First operand 71 states and 108 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) [2024-11-03 12:39:51,412 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 12:39:52,986 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 12:39:53,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 12:39:53,388 INFO L93 Difference]: Finished difference Result 275 states and 423 transitions. [2024-11-03 12:39:53,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 12:39:53,389 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) Word has length 152 [2024-11-03 12:39:53,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 12:39:53,391 INFO L225 Difference]: With dead ends: 275 [2024-11-03 12:39:53,391 INFO L226 Difference]: Without dead ends: 207 [2024-11-03 12:39:53,392 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 300 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 12:39:53,393 INFO L432 NwaCegarLoop]: 103 mSDtfsCounter, 128 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2024-11-03 12:39:53,393 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 251 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 64 Invalid, 1 Unknown, 0 Unchecked, 6.2s Time] [2024-11-03 12:39:53,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2024-11-03 12:39:53,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 137. [2024-11-03 12:39:53,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 88 states have (on average 1.3409090909090908) internal successors, (118), 88 states have internal predecessors, (118), 46 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2024-11-03 12:39:53,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 210 transitions. [2024-11-03 12:39:53,425 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 210 transitions. Word has length 152 [2024-11-03 12:39:53,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 12:39:53,425 INFO L471 AbstractCegarLoop]: Abstraction has 137 states and 210 transitions. [2024-11-03 12:39:53,425 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) [2024-11-03 12:39:53,426 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 210 transitions. [2024-11-03 12:39:53,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-11-03 12:39:53,427 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 12:39:53,427 INFO L215 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:39:53,433 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Ended with exit code 0 [2024-11-03 12:39:53,627 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:39:53,627 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 12:39:53,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 12:39:53,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1893532746, now seen corresponding path program 1 times [2024-11-03 12:39:53,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 12:39:53,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1492081981] [2024-11-03 12:39:53,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 12:39:53,629 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 12:39:53,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:39:53,634 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 12:39:53,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Waiting until timeout for monitored process [2024-11-03 12:39:53,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 12:39:53,686 INFO L255 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-03 12:39:53,689 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 12:39:53,732 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-11-03 12:39:53,732 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 12:39:53,965 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-11-03 12:39:53,965 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 12:39:53,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1492081981] [2024-11-03 12:39:53,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1492081981] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 12:39:53,966 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 12:39:53,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-03 12:39:53,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438380518] [2024-11-03 12:39:53,966 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 12:39:53,966 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 12:39:53,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 12:39:53,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 12:39:53,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 12:39:53,967 INFO L87 Difference]: Start difference. First operand 137 states and 210 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-03 12:39:58,201 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.66s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 12:39:58,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 12:39:58,669 INFO L93 Difference]: Finished difference Result 529 states and 813 transitions. [2024-11-03 12:39:58,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 12:39:58,672 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 152 [2024-11-03 12:39:58,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 12:39:58,676 INFO L225 Difference]: With dead ends: 529 [2024-11-03 12:39:58,676 INFO L226 Difference]: Without dead ends: 395 [2024-11-03 12:39:58,676 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 299 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 12:39:58,677 INFO L432 NwaCegarLoop]: 197 mSDtfsCounter, 196 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-03 12:39:58,677 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 346 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2024-11-03 12:39:58,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2024-11-03 12:39:58,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 139. [2024-11-03 12:39:58,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 90 states have (on average 1.3333333333333333) internal successors, (120), 90 states have internal predecessors, (120), 46 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2024-11-03 12:39:58,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 212 transitions. [2024-11-03 12:39:58,713 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 212 transitions. Word has length 152 [2024-11-03 12:39:58,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 12:39:58,713 INFO L471 AbstractCegarLoop]: Abstraction has 139 states and 212 transitions. [2024-11-03 12:39:58,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-03 12:39:58,714 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 212 transitions. [2024-11-03 12:39:58,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-11-03 12:39:58,715 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 12:39:58,715 INFO L215 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:39:58,719 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Ended with exit code 0 [2024-11-03 12:39:58,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:39:58,915 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 12:39:58,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 12:39:58,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1635367308, now seen corresponding path program 1 times [2024-11-03 12:39:58,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 12:39:58,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1121482415] [2024-11-03 12:39:58,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 12:39:58,916 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 12:39:58,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:39:58,917 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 12:39:58,918 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (6)] Waiting until timeout for monitored process [2024-11-03 12:39:58,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 12:39:58,972 INFO L255 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-03 12:39:58,975 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 12:40:00,221 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 481 proven. 36 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2024-11-03 12:40:00,221 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 12:40:01,874 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 90 proven. 39 refuted. 0 times theorem prover too weak. 883 trivial. 0 not checked. [2024-11-03 12:40:01,874 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 12:40:01,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1121482415] [2024-11-03 12:40:01,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1121482415] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 12:40:01,875 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 12:40:01,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 20 [2024-11-03 12:40:01,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507098284] [2024-11-03 12:40:01,875 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 12:40:01,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-03 12:40:01,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 12:40:01,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-03 12:40:01,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2024-11-03 12:40:01,878 INFO L87 Difference]: Start difference. First operand 139 states and 212 transitions. Second operand has 20 states, 19 states have (on average 4.105263157894737) internal successors, (78), 18 states have internal predecessors, (78), 6 states have call successors, (46), 4 states have call predecessors, (46), 7 states have return successors, (46), 6 states have call predecessors, (46), 6 states have call successors, (46) [2024-11-03 12:40:06,753 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.14s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 12:40:12,722 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-03 12:40:16,541 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.82s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2024-11-03 12:40:17,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 12:40:17,023 INFO L93 Difference]: Finished difference Result 439 states and 661 transitions. [2024-11-03 12:40:17,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-03 12:40:17,024 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 4.105263157894737) internal successors, (78), 18 states have internal predecessors, (78), 6 states have call successors, (46), 4 states have call predecessors, (46), 7 states have return successors, (46), 6 states have call predecessors, (46), 6 states have call successors, (46) Word has length 152 [2024-11-03 12:40:17,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 12:40:17,027 INFO L225 Difference]: With dead ends: 439 [2024-11-03 12:40:17,027 INFO L226 Difference]: Without dead ends: 303 [2024-11-03 12:40:17,028 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 287 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=379, Invalid=811, Unknown=0, NotChecked=0, Total=1190 [2024-11-03 12:40:17,029 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 348 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 705 mSolverCounterSat, 228 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 658 SdHoareTripleChecker+Invalid, 934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 705 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.3s IncrementalHoareTripleChecker+Time [2024-11-03 12:40:17,029 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [349 Valid, 658 Invalid, 934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [228 Valid, 705 Invalid, 1 Unknown, 0 Unchecked, 14.3s Time] [2024-11-03 12:40:17,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2024-11-03 12:40:17,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 191. [2024-11-03 12:40:17,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 116 states have (on average 1.2586206896551724) internal successors, (146), 116 states have internal predecessors, (146), 69 states have call successors, (69), 5 states have call predecessors, (69), 5 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2024-11-03 12:40:17,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 284 transitions. [2024-11-03 12:40:17,076 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 284 transitions. Word has length 152 [2024-11-03 12:40:17,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 12:40:17,077 INFO L471 AbstractCegarLoop]: Abstraction has 191 states and 284 transitions. [2024-11-03 12:40:17,077 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 4.105263157894737) internal successors, (78), 18 states have internal predecessors, (78), 6 states have call successors, (46), 4 states have call predecessors, (46), 7 states have return successors, (46), 6 states have call predecessors, (46), 6 states have call successors, (46) [2024-11-03 12:40:17,077 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 284 transitions. [2024-11-03 12:40:17,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-03 12:40:17,079 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 12:40:17,079 INFO L215 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:40:17,090 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (6)] Ended with exit code 0 [2024-11-03 12:40:17,279 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:40:17,280 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 12:40:17,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 12:40:17,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1776968085, now seen corresponding path program 1 times [2024-11-03 12:40:17,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 12:40:17,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [106235445] [2024-11-03 12:40:17,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 12:40:17,281 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 12:40:17,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:40:17,282 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 12:40:17,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (7)] Waiting until timeout for monitored process [2024-11-03 12:40:17,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 12:40:17,338 INFO L255 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-03 12:40:17,340 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 12:40:18,699 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 372 proven. 51 refuted. 0 times theorem prover too weak. 589 trivial. 0 not checked. [2024-11-03 12:40:18,699 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 12:40:19,604 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 15 proven. 51 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-03 12:40:19,604 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 12:40:19,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [106235445] [2024-11-03 12:40:19,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [106235445] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 12:40:19,605 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 12:40:19,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2024-11-03 12:40:19,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989442326] [2024-11-03 12:40:19,605 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 12:40:19,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-03 12:40:19,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 12:40:19,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-03 12:40:19,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2024-11-03 12:40:19,606 INFO L87 Difference]: Start difference. First operand 191 states and 284 transitions. Second operand has 14 states, 14 states have (on average 5.285714285714286) internal successors, (74), 14 states have internal predecessors, (74), 4 states have call successors, (46), 3 states have call predecessors, (46), 5 states have return successors, (46), 4 states have call predecessors, (46), 4 states have call successors, (46) [2024-11-03 12:40:24,635 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2024-11-03 12:40:28,638 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2024-11-03 12:40:31,444 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.81s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2024-11-03 12:40:38,161 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2024-11-03 12:40:42,168 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2024-11-03 12:40:44,120 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2024-11-03 12:40:45,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 12:40:45,083 INFO L93 Difference]: Finished difference Result 451 states and 673 transitions. [2024-11-03 12:40:45,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-03 12:40:45,085 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.285714285714286) internal successors, (74), 14 states have internal predecessors, (74), 4 states have call successors, (46), 3 states have call predecessors, (46), 5 states have return successors, (46), 4 states have call predecessors, (46), 4 states have call successors, (46) Word has length 153 [2024-11-03 12:40:45,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 12:40:45,087 INFO L225 Difference]: With dead ends: 451 [2024-11-03 12:40:45,087 INFO L226 Difference]: Without dead ends: 315 [2024-11-03 12:40:45,088 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 295 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=226, Invalid=530, Unknown=0, NotChecked=0, Total=756 [2024-11-03 12:40:45,090 INFO L432 NwaCegarLoop]: 106 mSDtfsCounter, 401 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 196 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 516 SdHoareTripleChecker+Invalid, 629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.5s IncrementalHoareTripleChecker+Time [2024-11-03 12:40:45,090 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [401 Valid, 516 Invalid, 629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 429 Invalid, 4 Unknown, 0 Unchecked, 24.5s Time] [2024-11-03 12:40:45,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2024-11-03 12:40:45,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 267. [2024-11-03 12:40:45,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 179 states have (on average 1.2960893854748603) internal successors, (232), 181 states have internal predecessors, (232), 79 states have call successors, (79), 8 states have call predecessors, (79), 8 states have return successors, (79), 77 states have call predecessors, (79), 79 states have call successors, (79) [2024-11-03 12:40:45,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 390 transitions. [2024-11-03 12:40:45,140 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 390 transitions. Word has length 153 [2024-11-03 12:40:45,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 12:40:45,141 INFO L471 AbstractCegarLoop]: Abstraction has 267 states and 390 transitions. [2024-11-03 12:40:45,142 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.285714285714286) internal successors, (74), 14 states have internal predecessors, (74), 4 states have call successors, (46), 3 states have call predecessors, (46), 5 states have return successors, (46), 4 states have call predecessors, (46), 4 states have call successors, (46) [2024-11-03 12:40:45,142 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 390 transitions. [2024-11-03 12:40:45,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-03 12:40:45,143 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 12:40:45,143 INFO L215 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:40:45,150 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (7)] Forceful destruction successful, exit code 0 [2024-11-03 12:40:45,343 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:40:45,344 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 12:40:45,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 12:40:45,344 INFO L85 PathProgramCache]: Analyzing trace with hash -217176621, now seen corresponding path program 1 times [2024-11-03 12:40:45,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 12:40:45,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1924155281] [2024-11-03 12:40:45,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 12:40:45,345 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 12:40:45,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:40:45,346 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 12:40:45,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (8)] Waiting until timeout for monitored process [2024-11-03 12:40:45,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 12:40:45,430 INFO L255 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-03 12:40:45,433 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 12:40:51,641 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 186 proven. 60 refuted. 0 times theorem prover too weak. 766 trivial. 0 not checked. [2024-11-03 12:40:51,642 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 12:41:07,256 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 6 proven. 60 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-03 12:41:07,256 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 12:41:07,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1924155281] [2024-11-03 12:41:07,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1924155281] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 12:41:07,256 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 12:41:07,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2024-11-03 12:41:07,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038522435] [2024-11-03 12:41:07,256 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 12:41:07,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-03 12:41:07,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 12:41:07,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-03 12:41:07,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-11-03 12:41:07,258 INFO L87 Difference]: Start difference. First operand 267 states and 390 transitions. Second operand has 10 states, 10 states have (on average 8.0) internal successors, (80), 10 states have internal predecessors, (80), 4 states have call successors, (46), 3 states have call predecessors, (46), 5 states have return successors, (46), 4 states have call predecessors, (46), 4 states have call successors, (46) [2024-11-03 12:41:10,240 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1]