/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_floatingpointinfluence_has-floats_file-7.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-03 12:11:51,149 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-03 12:11:51,233 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 12:11:51,238 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-03 12:11:51,240 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-03 12:11:51,269 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-03 12:11:51,269 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-03 12:11:51,270 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-03 12:11:51,271 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-03 12:11:51,272 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-03 12:11:51,272 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-03 12:11:51,273 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-03 12:11:51,274 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-03 12:11:51,275 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-03 12:11:51,275 INFO L153 SettingsManager]: * Use SBE=true [2024-11-03 12:11:51,275 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-03 12:11:51,276 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-03 12:11:51,276 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-03 12:11:51,276 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-03 12:11:51,276 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-03 12:11:51,277 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-03 12:11:51,280 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-03 12:11:51,280 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-03 12:11:51,281 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-03 12:11:51,281 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-03 12:11:51,281 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-03 12:11:51,281 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-03 12:11:51,282 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-03 12:11:51,282 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-03 12:11:51,282 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-03 12:11:51,282 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-03 12:11:51,283 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-03 12:11:51,283 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-03 12:11:51,283 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-03 12:11:51,283 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 12:11:51,284 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-03 12:11:51,284 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-03 12:11:51,284 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-03 12:11:51,284 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-03 12:11:51,285 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-03 12:11:51,285 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-03 12:11:51,286 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-03 12:11:51,286 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-03 12:11:51,286 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-03 12:11:51,287 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> bitwuzla [2024-11-03 12:11:51,526 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-03 12:11:51,551 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-03 12:11:51,554 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-03 12:11:51,555 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-03 12:11:51,555 INFO L274 PluginConnector]: CDTParser initialized [2024-11-03 12:11:51,557 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_floatingpointinfluence_has-floats_file-7.i [2024-11-03 12:11:53,022 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-03 12:11:53,205 INFO L384 CDTParser]: Found 1 translation units. [2024-11-03 12:11:53,206 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_floatingpointinfluence_has-floats_file-7.i [2024-11-03 12:11:53,214 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df116e3d0/ef3681c5835e49b294868b0a2955f26a/FLAG3645960c3 [2024-11-03 12:11:53,229 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df116e3d0/ef3681c5835e49b294868b0a2955f26a [2024-11-03 12:11:53,232 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-03 12:11:53,233 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-03 12:11:53,235 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-03 12:11:53,235 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-03 12:11:53,242 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-03 12:11:53,243 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 12:11:53" (1/1) ... [2024-11-03 12:11:53,244 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29a4ba79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:11:53, skipping insertion in model container [2024-11-03 12:11:53,244 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 12:11:53" (1/1) ... [2024-11-03 12:11:53,268 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-03 12:11:53,413 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_floatingpointinfluence_has-floats_file-7.i[916,929] [2024-11-03 12:11:53,450 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 12:11:53,464 INFO L200 MainTranslator]: Completed pre-run [2024-11-03 12:11:53,475 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_floatingpointinfluence_has-floats_file-7.i[916,929] [2024-11-03 12:11:53,492 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 12:11:53,514 INFO L204 MainTranslator]: Completed translation [2024-11-03 12:11:53,516 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:11:53 WrapperNode [2024-11-03 12:11:53,517 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-03 12:11:53,518 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-03 12:11:53,518 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-03 12:11:53,518 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-03 12:11:53,525 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:11:53" (1/1) ... [2024-11-03 12:11:53,535 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:11:53" (1/1) ... [2024-11-03 12:11:53,557 INFO L138 Inliner]: procedures = 27, calls = 25, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 97 [2024-11-03 12:11:53,557 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-03 12:11:53,558 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-03 12:11:53,558 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-03 12:11:53,558 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-03 12:11:53,571 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:11:53" (1/1) ... [2024-11-03 12:11:53,572 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:11:53" (1/1) ... [2024-11-03 12:11:53,577 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:11:53" (1/1) ... [2024-11-03 12:11:53,588 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 12:11:53,588 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:11:53" (1/1) ... [2024-11-03 12:11:53,588 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:11:53" (1/1) ... [2024-11-03 12:11:53,596 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:11:53" (1/1) ... [2024-11-03 12:11:53,598 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:11:53" (1/1) ... [2024-11-03 12:11:53,600 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:11:53" (1/1) ... [2024-11-03 12:11:53,601 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:11:53" (1/1) ... [2024-11-03 12:11:53,604 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-03 12:11:53,605 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-03 12:11:53,605 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-03 12:11:53,605 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-03 12:11:53,606 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:11:53" (1/1) ... [2024-11-03 12:11:53,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 12:11:53,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 12:11:53,646 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 12:11:53,650 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 12:11:53,672 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-03 12:11:53,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-03 12:11:53,673 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-03 12:11:53,673 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-03 12:11:53,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-03 12:11:53,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-03 12:11:53,735 INFO L238 CfgBuilder]: Building ICFG [2024-11-03 12:11:53,737 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-03 12:11:54,631 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2024-11-03 12:11:54,632 INFO L287 CfgBuilder]: Performing block encoding [2024-11-03 12:11:54,642 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-03 12:11:54,642 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-03 12:11:54,643 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 12:11:54 BoogieIcfgContainer [2024-11-03 12:11:54,643 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-03 12:11:54,645 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-03 12:11:54,645 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-03 12:11:54,650 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-03 12:11:54,650 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 12:11:53" (1/3) ... [2024-11-03 12:11:54,651 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@337cde6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 12:11:54, skipping insertion in model container [2024-11-03 12:11:54,651 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:11:53" (2/3) ... [2024-11-03 12:11:54,652 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@337cde6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 12:11:54, skipping insertion in model container [2024-11-03 12:11:54,652 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 12:11:54" (3/3) ... [2024-11-03 12:11:54,653 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_floatingpointinfluence_has-floats_file-7.i [2024-11-03 12:11:54,678 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-03 12:11:54,679 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-03 12:11:54,733 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-03 12:11:54,739 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;@2755367c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-03 12:11:54,739 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-03 12:11:54,743 INFO L276 IsEmpty]: Start isEmpty. Operand has 45 states, 30 states have (on average 1.4) internal successors, (42), 31 states have internal predecessors, (42), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-03 12:11:54,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-03 12:11:54,752 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 12:11:54,753 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:11:54,753 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 12:11:54,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 12:11:54,759 INFO L85 PathProgramCache]: Analyzing trace with hash 533118968, now seen corresponding path program 1 times [2024-11-03 12:11:54,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 12:11:54,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [846885134] [2024-11-03 12:11:54,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 12:11:54,769 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 12:11:54,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:11:54,772 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 12:11:54,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Waiting until timeout for monitored process [2024-11-03 12:11:54,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 12:11:54,897 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-03 12:11:54,906 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 12:11:54,949 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2024-11-03 12:11:54,949 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 12:11:55,069 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2024-11-03 12:11:55,070 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 12:11:55,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [846885134] [2024-11-03 12:11:55,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [846885134] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 12:11:55,073 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 12:11:55,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2024-11-03 12:11:55,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838046730] [2024-11-03 12:11:55,076 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 12:11:55,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-03 12:11:55,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 12:11:55,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-03 12:11:55,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-03 12:11:55,143 INFO L87 Difference]: Start difference. First operand has 45 states, 30 states have (on average 1.4) internal successors, (42), 31 states have internal predecessors, (42), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 1 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-03 12:11:55,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 12:11:55,165 INFO L93 Difference]: Finished difference Result 83 states and 138 transitions. [2024-11-03 12:11:55,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-03 12:11:55,169 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 1 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) Word has length 79 [2024-11-03 12:11:55,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 12:11:55,177 INFO L225 Difference]: With dead ends: 83 [2024-11-03 12:11:55,178 INFO L226 Difference]: Without dead ends: 41 [2024-11-03 12:11:55,181 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 156 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 12:11:55,183 INFO L432 NwaCegarLoop]: 58 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, 58 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 12:11:55,184 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 12:11:55,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-11-03 12:11:55,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2024-11-03 12:11:55,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 27 states have internal predecessors, (34), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-03 12:11:55,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 58 transitions. [2024-11-03 12:11:55,222 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 58 transitions. Word has length 79 [2024-11-03 12:11:55,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 12:11:55,222 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 58 transitions. [2024-11-03 12:11:55,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 1 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-03 12:11:55,222 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 58 transitions. [2024-11-03 12:11:55,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-03 12:11:55,225 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 12:11:55,225 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:11:55,229 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Ended with exit code 0 [2024-11-03 12:11:55,428 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:11:55,428 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 12:11:55,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 12:11:55,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1417074868, now seen corresponding path program 1 times [2024-11-03 12:11:55,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 12:11:55,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2112020786] [2024-11-03 12:11:55,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 12:11:55,430 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 12:11:55,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:11:55,434 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 12:11:55,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Waiting until timeout for monitored process [2024-11-03 12:11:55,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 12:11:55,548 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-03 12:11:55,559 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 12:12:01,913 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2024-11-03 12:12:01,914 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 12:12:21,615 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2024-11-03 12:12:21,616 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 12:12:21,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2112020786] [2024-11-03 12:12:21,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2112020786] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 12:12:21,616 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 12:12:21,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 19 [2024-11-03 12:12:21,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554770000] [2024-11-03 12:12:21,617 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 12:12:21,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-03 12:12:21,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 12:12:21,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-03 12:12:21,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2024-11-03 12:12:21,620 INFO L87 Difference]: Start difference. First operand 41 states and 58 transitions. Second operand has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 19 states have internal predecessors, (49), 2 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (24), 4 states have call predecessors, (24), 2 states have call successors, (24) [2024-11-03 12:12:30,991 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2024-11-03 12:12:35,930 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2024-11-03 12:12:58,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 12:12:58,651 INFO L93 Difference]: Finished difference Result 87 states and 107 transitions. [2024-11-03 12:12:58,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-03 12:12:58,652 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 19 states have internal predecessors, (49), 2 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (24), 4 states have call predecessors, (24), 2 states have call successors, (24) Word has length 79 [2024-11-03 12:12:58,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 12:12:58,654 INFO L225 Difference]: With dead ends: 87 [2024-11-03 12:12:58,654 INFO L226 Difference]: Without dead ends: 85 [2024-11-03 12:12:58,656 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 32.3s TimeCoverageRelationStatistics Valid=283, Invalid=773, Unknown=0, NotChecked=0, Total=1056 [2024-11-03 12:12:58,657 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 171 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.6s IncrementalHoareTripleChecker+Time [2024-11-03 12:12:58,658 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 230 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 17.6s Time] [2024-11-03 12:12:58,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-11-03 12:12:58,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 57. [2024-11-03 12:12:58,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 39 states have (on average 1.1794871794871795) internal successors, (46), 40 states have internal predecessors, (46), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-03 12:12:58,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 74 transitions. [2024-11-03 12:12:58,673 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 74 transitions. Word has length 79 [2024-11-03 12:12:58,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 12:12:58,674 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 74 transitions. [2024-11-03 12:12:58,674 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 19 states have internal predecessors, (49), 2 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (24), 4 states have call predecessors, (24), 2 states have call successors, (24) [2024-11-03 12:12:58,674 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 74 transitions. [2024-11-03 12:12:58,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-03 12:12:58,678 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 12:12:58,678 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:12:58,688 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Ended with exit code 0 [2024-11-03 12:12:58,878 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:12:58,879 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 12:12:58,880 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 12:12:58,880 INFO L85 PathProgramCache]: Analyzing trace with hash 574159787, now seen corresponding path program 1 times [2024-11-03 12:12:58,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 12:12:58,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1468335550] [2024-11-03 12:12:58,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 12:12:58,880 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 12:12:58,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:12:58,882 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 12:12:58,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Waiting until timeout for monitored process [2024-11-03 12:12:58,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 12:12:58,925 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 12:12:58,929 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 12:12:58,947 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-03 12:12:58,948 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 12:12:59,017 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-03 12:12:59,018 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 12:12:59,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1468335550] [2024-11-03 12:12:59,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1468335550] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 12:12:59,018 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 12:12:59,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-11-03 12:12:59,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641486022] [2024-11-03 12:12:59,018 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 12:12:59,019 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-03 12:12:59,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 12:12:59,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-03 12:12:59,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 12:12:59,020 INFO L87 Difference]: Start difference. First operand 57 states and 74 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-03 12:12:59,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 12:12:59,125 INFO L93 Difference]: Finished difference Result 128 states and 163 transitions. [2024-11-03 12:12:59,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-03 12:12:59,131 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 80 [2024-11-03 12:12:59,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 12:12:59,134 INFO L225 Difference]: With dead ends: 128 [2024-11-03 12:12:59,134 INFO L226 Difference]: Without dead ends: 79 [2024-11-03 12:12:59,135 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 12:12:59,136 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 22 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 12:12:59,137 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 101 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 12:12:59,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-11-03 12:12:59,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 78. [2024-11-03 12:12:59,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 54 states have (on average 1.1296296296296295) internal successors, (61), 56 states have internal predecessors, (61), 18 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (18), 16 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-03 12:12:59,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 97 transitions. [2024-11-03 12:12:59,153 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 97 transitions. Word has length 80 [2024-11-03 12:12:59,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 12:12:59,153 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 97 transitions. [2024-11-03 12:12:59,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-03 12:12:59,154 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 97 transitions. [2024-11-03 12:12:59,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-03 12:12:59,156 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 12:12:59,156 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:12:59,158 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Ended with exit code 0 [2024-11-03 12:12:59,357 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:12:59,358 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 12:12:59,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 12:12:59,359 INFO L85 PathProgramCache]: Analyzing trace with hash -155695824, now seen corresponding path program 1 times [2024-11-03 12:12:59,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 12:12:59,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [48286266] [2024-11-03 12:12:59,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 12:12:59,359 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 12:12:59,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:12:59,361 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 12:12:59,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Waiting until timeout for monitored process [2024-11-03 12:12:59,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 12:12:59,420 INFO L255 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-03 12:12:59,423 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 12:13:06,314 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2024-11-03 12:13:06,314 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 12:13:14,791 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2024-11-03 12:13:14,791 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 12:13:14,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [48286266] [2024-11-03 12:13:14,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [48286266] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 12:13:14,792 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 12:13:14,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 11] imperfect sequences [] total 21 [2024-11-03 12:13:14,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548549385] [2024-11-03 12:13:14,792 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 12:13:14,793 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-03 12:13:14,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 12:13:14,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-03 12:13:14,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=313, Unknown=0, NotChecked=0, Total=420 [2024-11-03 12:13:14,794 INFO L87 Difference]: Start difference. First operand 78 states and 97 transitions. Second operand has 21 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 21 states have internal predecessors, (53), 2 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (24), 4 states have call predecessors, (24), 2 states have call successors, (24)