/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_amount10_file-22.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-03 12:41:27,468 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-03 12:41:27,548 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 12:41:27,556 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-03 12:41:27,557 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-03 12:41:27,581 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-03 12:41:27,582 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-03 12:41:27,582 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-03 12:41:27,583 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-03 12:41:27,586 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-03 12:41:27,587 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-03 12:41:27,587 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-03 12:41:27,587 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-03 12:41:27,588 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-03 12:41:27,588 INFO L153 SettingsManager]: * Use SBE=true [2024-11-03 12:41:27,588 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-03 12:41:27,588 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-03 12:41:27,589 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-03 12:41:27,589 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-03 12:41:27,589 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-03 12:41:27,589 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-03 12:41:27,591 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-03 12:41:27,591 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-03 12:41:27,591 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-03 12:41:27,591 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-03 12:41:27,591 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-03 12:41:27,592 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-03 12:41:27,592 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-03 12:41:27,592 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-03 12:41:27,592 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-03 12:41:27,592 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-03 12:41:27,593 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-03 12:41:27,593 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-03 12:41:27,593 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-03 12:41:27,593 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 12:41:27,593 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-03 12:41:27,594 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-03 12:41:27,594 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-03 12:41:27,594 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-03 12:41:27,594 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-03 12:41:27,594 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-03 12:41:27,595 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-03 12:41:27,595 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-03 12:41:27,596 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-03 12:41:27,596 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> bitwuzla [2024-11-03 12:41:27,814 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-03 12:41:27,844 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-03 12:41:27,847 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-03 12:41:27,849 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-03 12:41:27,849 INFO L274 PluginConnector]: CDTParser initialized [2024-11-03 12:41:27,851 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount10_file-22.i [2024-11-03 12:41:29,517 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-03 12:41:29,706 INFO L384 CDTParser]: Found 1 translation units. [2024-11-03 12:41:29,707 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount10_file-22.i [2024-11-03 12:41:29,716 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0724dfad/a59e3eb4e54b47a1b1ae3e8771bd247f/FLAG376eeb3d4 [2024-11-03 12:41:30,107 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0724dfad/a59e3eb4e54b47a1b1ae3e8771bd247f [2024-11-03 12:41:30,114 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-03 12:41:30,116 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-03 12:41:30,117 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-03 12:41:30,117 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-03 12:41:30,127 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-03 12:41:30,128 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 12:41:30" (1/1) ... [2024-11-03 12:41:30,129 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@202154b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:41:30, skipping insertion in model container [2024-11-03 12:41:30,129 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 12:41:30" (1/1) ... [2024-11-03 12:41:30,154 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-03 12:41:30,332 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_amount10_file-22.i[915,928] [2024-11-03 12:41:30,359 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 12:41:30,377 INFO L200 MainTranslator]: Completed pre-run [2024-11-03 12:41:30,390 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_amount10_file-22.i[915,928] [2024-11-03 12:41:30,399 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 12:41:30,419 INFO L204 MainTranslator]: Completed translation [2024-11-03 12:41:30,420 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:41:30 WrapperNode [2024-11-03 12:41:30,420 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-03 12:41:30,421 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-03 12:41:30,421 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-03 12:41:30,421 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-03 12:41:30,428 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:41:30" (1/1) ... [2024-11-03 12:41:30,458 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:41:30" (1/1) ... [2024-11-03 12:41:30,487 INFO L138 Inliner]: procedures = 27, calls = 18, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 62 [2024-11-03 12:41:30,488 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-03 12:41:30,488 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-03 12:41:30,488 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-03 12:41:30,489 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-03 12:41:30,501 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:41:30" (1/1) ... [2024-11-03 12:41:30,501 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:41:30" (1/1) ... [2024-11-03 12:41:30,506 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:41:30" (1/1) ... [2024-11-03 12:41:30,517 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 12:41:30,518 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:41:30" (1/1) ... [2024-11-03 12:41:30,518 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:41:30" (1/1) ... [2024-11-03 12:41:30,527 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:41:30" (1/1) ... [2024-11-03 12:41:30,531 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:41:30" (1/1) ... [2024-11-03 12:41:30,533 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:41:30" (1/1) ... [2024-11-03 12:41:30,534 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:41:30" (1/1) ... [2024-11-03 12:41:30,536 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-03 12:41:30,537 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-03 12:41:30,538 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-03 12:41:30,538 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-03 12:41:30,539 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:41:30" (1/1) ... [2024-11-03 12:41:30,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 12:41:30,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 12:41:30,576 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 12:41:30,587 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 12:41:30,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-03 12:41:30,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-03 12:41:30,617 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-03 12:41:30,617 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-03 12:41:30,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-03 12:41:30,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-03 12:41:30,722 INFO L238 CfgBuilder]: Building ICFG [2024-11-03 12:41:30,724 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-03 12:41:31,173 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2024-11-03 12:41:31,174 INFO L287 CfgBuilder]: Performing block encoding [2024-11-03 12:41:31,186 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-03 12:41:31,186 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-03 12:41:31,187 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 12:41:31 BoogieIcfgContainer [2024-11-03 12:41:31,187 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-03 12:41:31,191 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-03 12:41:31,191 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-03 12:41:31,195 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-03 12:41:31,195 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 12:41:30" (1/3) ... [2024-11-03 12:41:31,196 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f88283d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 12:41:31, skipping insertion in model container [2024-11-03 12:41:31,196 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:41:30" (2/3) ... [2024-11-03 12:41:31,197 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f88283d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 12:41:31, skipping insertion in model container [2024-11-03 12:41:31,197 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 12:41:31" (3/3) ... [2024-11-03 12:41:31,199 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount10_file-22.i [2024-11-03 12:41:31,216 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-03 12:41:31,217 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-03 12:41:31,271 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-03 12:41:31,278 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;@72732b09, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-03 12:41:31,279 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-03 12:41:31,283 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 24 states have internal predecessors, (31), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-03 12:41:31,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-03 12:41:31,290 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 12:41:31,291 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 12:41:31,292 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 12:41:31,296 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 12:41:31,297 INFO L85 PathProgramCache]: Analyzing trace with hash -706627639, now seen corresponding path program 1 times [2024-11-03 12:41:31,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 12:41:31,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [861435571] [2024-11-03 12:41:31,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 12:41:31,307 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 12:41:31,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:41:31,311 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 12:41:31,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Waiting until timeout for monitored process [2024-11-03 12:41:31,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 12:41:31,379 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-03 12:41:31,384 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 12:41:31,409 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-03 12:41:31,409 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 12:41:31,453 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-03 12:41:31,454 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 12:41:31,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [861435571] [2024-11-03 12:41:31,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [861435571] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 12:41:31,456 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 12:41:31,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2024-11-03 12:41:31,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850029308] [2024-11-03 12:41:31,459 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 12:41:31,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-03 12:41:31,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 12:41:31,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-03 12:41:31,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-03 12:41:31,488 INFO L87 Difference]: Start difference. First operand has 31 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 24 states have internal predecessors, (31), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-03 12:41:31,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 12:41:31,512 INFO L93 Difference]: Finished difference Result 55 states and 81 transitions. [2024-11-03 12:41:31,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-03 12:41:31,516 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 40 [2024-11-03 12:41:31,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 12:41:31,523 INFO L225 Difference]: With dead ends: 55 [2024-11-03 12:41:31,523 INFO L226 Difference]: Without dead ends: 27 [2024-11-03 12:41:31,527 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 78 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 12:41:31,534 INFO L432 NwaCegarLoop]: 34 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, 34 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 12:41:31,536 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 12:41:31,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-03 12:41:31,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-11-03 12:41:31,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 20 states have (on average 1.2) internal successors, (24), 20 states have internal predecessors, (24), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-03 12:41:31,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 34 transitions. [2024-11-03 12:41:31,585 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 34 transitions. Word has length 40 [2024-11-03 12:41:31,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 12:41:31,586 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 34 transitions. [2024-11-03 12:41:31,587 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-03 12:41:31,587 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 34 transitions. [2024-11-03 12:41:31,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-03 12:41:31,590 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 12:41:31,590 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 12:41:31,599 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Forceful destruction successful, exit code 0 [2024-11-03 12:41:31,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:41:31,791 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 12:41:31,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 12:41:31,792 INFO L85 PathProgramCache]: Analyzing trace with hash -51026809, now seen corresponding path program 1 times [2024-11-03 12:41:31,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 12:41:31,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1303097585] [2024-11-03 12:41:31,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 12:41:31,793 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 12:41:31,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:41:31,797 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 12:41:31,802 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Waiting until timeout for monitored process [2024-11-03 12:41:31,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 12:41:31,849 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-03 12:41:31,851 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 12:41:32,258 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-03 12:41:32,259 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 12:41:34,048 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-03 12:41:34,049 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 12:41:34,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1303097585] [2024-11-03 12:41:34,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1303097585] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 12:41:34,049 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 12:41:34,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 3] imperfect sequences [] total 4 [2024-11-03 12:41:34,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186330477] [2024-11-03 12:41:34,050 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 12:41:34,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 12:41:34,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 12:41:34,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 12:41:34,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 12:41:34,057 INFO L87 Difference]: Start difference. First operand 27 states and 34 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-03 12:41:35,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 12:41:35,599 INFO L93 Difference]: Finished difference Result 99 states and 127 transitions. [2024-11-03 12:41:35,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 12:41:35,604 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 40 [2024-11-03 12:41:35,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 12:41:35,606 INFO L225 Difference]: With dead ends: 99 [2024-11-03 12:41:35,606 INFO L226 Difference]: Without dead ends: 75 [2024-11-03 12:41:35,622 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 12:41:35,623 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 34 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-03 12:41:35,624 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 70 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-03 12:41:35,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-03 12:41:35,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 49. [2024-11-03 12:41:35,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 36 states have (on average 1.1944444444444444) internal successors, (43), 36 states have internal predecessors, (43), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-03 12:41:35,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 63 transitions. [2024-11-03 12:41:35,650 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 63 transitions. Word has length 40 [2024-11-03 12:41:35,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 12:41:35,650 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 63 transitions. [2024-11-03 12:41:35,650 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-03 12:41:35,650 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 63 transitions. [2024-11-03 12:41:35,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-03 12:41:35,655 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 12:41:35,655 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 12:41:35,658 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Forceful destruction successful, exit code 0 [2024-11-03 12:41:35,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:41:35,861 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 12:41:35,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 12:41:35,862 INFO L85 PathProgramCache]: Analyzing trace with hash -49179767, now seen corresponding path program 1 times [2024-11-03 12:41:35,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 12:41:35,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1019008535] [2024-11-03 12:41:35,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 12:41:35,862 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 12:41:35,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:41:35,865 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 12:41:35,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Waiting until timeout for monitored process [2024-11-03 12:41:35,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 12:41:35,901 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-03 12:41:35,905 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 12:41:36,645 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-03 12:41:36,646 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 12:41:41,807 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-03 12:41:41,808 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 12:41:41,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1019008535] [2024-11-03 12:41:41,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1019008535] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 12:41:41,808 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 12:41:41,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 6] imperfect sequences [] total 10 [2024-11-03 12:41:41,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309843778] [2024-11-03 12:41:41,809 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 12:41:41,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-03 12:41:41,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 12:41:41,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-03 12:41:41,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-03 12:41:41,811 INFO L87 Difference]: Start difference. First operand 49 states and 63 transitions. Second operand has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-03 12:41:45,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 12:41:45,796 INFO L93 Difference]: Finished difference Result 91 states and 111 transitions. [2024-11-03 12:41:45,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-03 12:41:45,800 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 40 [2024-11-03 12:41:45,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 12:41:45,801 INFO L225 Difference]: With dead ends: 91 [2024-11-03 12:41:45,801 INFO L226 Difference]: Without dead ends: 89 [2024-11-03 12:41:45,802 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2024-11-03 12:41:45,802 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 48 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-03 12:41:45,803 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 176 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-03 12:41:45,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-11-03 12:41:45,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 53. [2024-11-03 12:41:45,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 40 states have (on average 1.175) internal successors, (47), 40 states have internal predecessors, (47), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-03 12:41:45,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 67 transitions. [2024-11-03 12:41:45,813 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 67 transitions. Word has length 40 [2024-11-03 12:41:45,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 12:41:45,813 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 67 transitions. [2024-11-03 12:41:45,813 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-03 12:41:45,813 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 67 transitions. [2024-11-03 12:41:45,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-03 12:41:45,814 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 12:41:45,814 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 12:41:45,817 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Forceful destruction successful, exit code 0 [2024-11-03 12:41:46,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:41:46,017 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 12:41:46,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 12:41:46,018 INFO L85 PathProgramCache]: Analyzing trace with hash -294239510, now seen corresponding path program 1 times [2024-11-03 12:41:46,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 12:41:46,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [462780468] [2024-11-03 12:41:46,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 12:41:46,018 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 12:41:46,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:41:46,023 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 12:41:46,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Waiting until timeout for monitored process [2024-11-03 12:41:46,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 12:41:46,053 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-03 12:41:46,055 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 12:41:46,102 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 24 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-03 12:41:46,102 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 12:41:46,190 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-03 12:41:46,191 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 12:41:46,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [462780468] [2024-11-03 12:41:46,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [462780468] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 12:41:46,191 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 12:41:46,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2024-11-03 12:41:46,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169776002] [2024-11-03 12:41:46,192 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 12:41:46,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-03 12:41:46,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 12:41:46,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-03 12:41:46,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-03 12:41:46,193 INFO L87 Difference]: Start difference. First operand 53 states and 67 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-03 12:41:46,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 12:41:46,447 INFO L93 Difference]: Finished difference Result 114 states and 140 transitions. [2024-11-03 12:41:46,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-03 12:41:46,454 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 41 [2024-11-03 12:41:46,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 12:41:46,455 INFO L225 Difference]: With dead ends: 114 [2024-11-03 12:41:46,456 INFO L226 Difference]: Without dead ends: 64 [2024-11-03 12:41:46,456 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2024-11-03 12:41:46,460 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 30 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-03 12:41:46,461 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 59 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-03 12:41:46,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-11-03 12:41:46,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 59. [2024-11-03 12:41:46,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 44 states have (on average 1.1136363636363635) internal successors, (49), 44 states have internal predecessors, (49), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-03 12:41:46,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 69 transitions. [2024-11-03 12:41:46,469 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 69 transitions. Word has length 41 [2024-11-03 12:41:46,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 12:41:46,469 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 69 transitions. [2024-11-03 12:41:46,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-03 12:41:46,470 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 69 transitions. [2024-11-03 12:41:46,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-03 12:41:46,470 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 12:41:46,470 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 12:41:46,474 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Ended with exit code 0 [2024-11-03 12:41:46,672 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:41:46,673 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 12:41:46,673 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 12:41:46,674 INFO L85 PathProgramCache]: Analyzing trace with hash -353344854, now seen corresponding path program 1 times [2024-11-03 12:41:46,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 12:41:46,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1186795258] [2024-11-03 12:41:46,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 12:41:46,674 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 12:41:46,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:41:46,675 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 12:41:46,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (6)] Waiting until timeout for monitored process [2024-11-03 12:41:46,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 12:41:46,723 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-03 12:41:46,725 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 12:41:48,181 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-03 12:41:48,182 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 12:41:50,640 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-03 12:41:50,641 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 12:41:50,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1186795258] [2024-11-03 12:41:50,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1186795258] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 12:41:50,641 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 12:41:50,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2024-11-03 12:41:50,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128322273] [2024-11-03 12:41:50,641 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 12:41:50,642 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-03 12:41:50,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 12:41:50,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-03 12:41:50,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-11-03 12:41:50,643 INFO L87 Difference]: Start difference. First operand 59 states and 69 transitions. Second operand has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-03 12:41:55,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 12:41:55,091 INFO L93 Difference]: Finished difference Result 116 states and 128 transitions. [2024-11-03 12:41:55,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-03 12:41:55,094 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 41 [2024-11-03 12:41:55,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 12:41:55,096 INFO L225 Difference]: With dead ends: 116 [2024-11-03 12:41:55,096 INFO L226 Difference]: Without dead ends: 114 [2024-11-03 12:41:55,096 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2024-11-03 12:41:55,097 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 72 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-03 12:41:55,097 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 218 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-03 12:41:55,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-11-03 12:41:55,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 108. [2024-11-03 12:41:55,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 79 states have (on average 1.0886075949367089) internal successors, (86), 81 states have internal predecessors, (86), 18 states have call successors, (18), 10 states have call predecessors, (18), 10 states have return successors, (18), 16 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-03 12:41:55,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 122 transitions. [2024-11-03 12:41:55,110 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 122 transitions. Word has length 41 [2024-11-03 12:41:55,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 12:41:55,110 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 122 transitions. [2024-11-03 12:41:55,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-03 12:41:55,110 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 122 transitions. [2024-11-03 12:41:55,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-03 12:41:55,111 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 12:41:55,111 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 12:41:55,114 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (6)] Forceful destruction successful, exit code 0 [2024-11-03 12:41:55,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:41:55,312 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 12:41:55,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 12:41:55,312 INFO L85 PathProgramCache]: Analyzing trace with hash -351497812, now seen corresponding path program 1 times [2024-11-03 12:41:55,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 12:41:55,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [634089343] [2024-11-03 12:41:55,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 12:41:55,312 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 12:41:55,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:41:55,313 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 12:41:55,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (7)] Waiting until timeout for monitored process [2024-11-03 12:41:55,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 12:41:55,341 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-03 12:41:55,344 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 12:41:56,004 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-03 12:41:56,004 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 12:42:14,585 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-03 12:42:14,586 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 12:42:14,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [634089343] [2024-11-03 12:42:14,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [634089343] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 12:42:14,586 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 12:42:14,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 9] imperfect sequences [] total 16 [2024-11-03 12:42:14,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594080122] [2024-11-03 12:42:14,586 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 12:42:14,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-03 12:42:14,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 12:42:14,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-03 12:42:14,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2024-11-03 12:42:14,587 INFO L87 Difference]: Start difference. First operand 108 states and 122 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (10), 4 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-03 12:42:28,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 12:42:28,255 INFO L93 Difference]: Finished difference Result 232 states and 258 transitions. [2024-11-03 12:42:28,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-03 12:42:28,262 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (10), 4 states have call predecessors, (10), 2 states have call successors, (10) Word has length 41 [2024-11-03 12:42:28,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 12:42:28,265 INFO L225 Difference]: With dead ends: 232 [2024-11-03 12:42:28,265 INFO L226 Difference]: Without dead ends: 230 [2024-11-03 12:42:28,265 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=132, Invalid=374, Unknown=0, NotChecked=0, Total=506 [2024-11-03 12:42:28,266 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 75 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.1s IncrementalHoareTripleChecker+Time [2024-11-03 12:42:28,266 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 233 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 13.1s Time] [2024-11-03 12:42:28,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2024-11-03 12:42:28,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 199. [2024-11-03 12:42:28,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 146 states have (on average 1.082191780821918) internal successors, (158), 149 states have internal predecessors, (158), 32 states have call successors, (32), 20 states have call predecessors, (32), 20 states have return successors, (32), 29 states have call predecessors, (32), 32 states have call successors, (32) [2024-11-03 12:42:28,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 222 transitions. [2024-11-03 12:42:28,287 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 222 transitions. Word has length 41 [2024-11-03 12:42:28,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 12:42:28,287 INFO L471 AbstractCegarLoop]: Abstraction has 199 states and 222 transitions. [2024-11-03 12:42:28,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (10), 4 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-03 12:42:28,288 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 222 transitions. [2024-11-03 12:42:28,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-03 12:42:28,288 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 12:42:28,289 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 12:42:28,292 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (7)] Ended with exit code 0 [2024-11-03 12:42:28,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:42:28,489 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 12:42:28,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 12:42:28,490 INFO L85 PathProgramCache]: Analyzing trace with hash -102877155, now seen corresponding path program 1 times [2024-11-03 12:42:28,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 12:42:28,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1865338930] [2024-11-03 12:42:28,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 12:42:28,490 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 12:42:28,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:42:28,491 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 12:42:28,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (8)] Waiting until timeout for monitored process [2024-11-03 12:42:28,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 12:42:28,525 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-03 12:42:28,527 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 12:42:29,957 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2024-11-03 12:42:29,958 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 12:42:36,699 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2024-11-03 12:42:36,700 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 12:42:36,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1865338930] [2024-11-03 12:42:36,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1865338930] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-03 12:42:36,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-03 12:42:36,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 11 [2024-11-03 12:42:36,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76681739] [2024-11-03 12:42:36,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-03 12:42:36,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-03 12:42:36,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 12:42:36,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-03 12:42:36,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-03 12:42:36,701 INFO L87 Difference]: Start difference. First operand 199 states and 222 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-03 12:42:52,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 12:42:52,709 INFO L93 Difference]: Finished difference Result 205 states and 226 transitions. [2024-11-03 12:42:52,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-03 12:42:52,710 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 78 [2024-11-03 12:42:52,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 12:42:52,713 INFO L225 Difference]: With dead ends: 205 [2024-11-03 12:42:52,713 INFO L226 Difference]: Without dead ends: 203 [2024-11-03 12:42:52,713 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2024-11-03 12:42:52,714 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 19 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2024-11-03 12:42:52,714 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 126 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 10.5s Time] [2024-11-03 12:42:52,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2024-11-03 12:42:52,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 199. [2024-11-03 12:42:52,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 146 states have (on average 1.0753424657534247) internal successors, (157), 149 states have internal predecessors, (157), 32 states have call successors, (32), 20 states have call predecessors, (32), 20 states have return successors, (32), 29 states have call predecessors, (32), 32 states have call successors, (32) [2024-11-03 12:42:52,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 221 transitions. [2024-11-03 12:42:52,734 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 221 transitions. Word has length 78 [2024-11-03 12:42:52,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 12:42:52,735 INFO L471 AbstractCegarLoop]: Abstraction has 199 states and 221 transitions. [2024-11-03 12:42:52,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-03 12:42:52,735 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 221 transitions. [2024-11-03 12:42:52,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-03 12:42:52,736 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 12:42:52,736 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 12:42:52,739 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (8)] Ended with exit code 0 [2024-11-03 12:42:52,936 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:42:52,937 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 12:42:52,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 12:42:52,937 INFO L85 PathProgramCache]: Analyzing trace with hash -101030113, now seen corresponding path program 1 times [2024-11-03 12:42:52,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 12:42:52,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1735787098] [2024-11-03 12:42:52,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 12:42:52,938 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 12:42:52,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:42:52,940 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 12:42:52,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (9)] Waiting until timeout for monitored process [2024-11-03 12:42:52,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 12:42:52,971 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-03 12:42:52,973 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 12:42:59,715 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-03 12:42:59,715 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 12:43:01,379 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-11-03 12:43:01,379 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 12:43:01,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1735787098] [2024-11-03 12:43:01,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1735787098] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 12:43:01,380 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 12:43:01,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2024-11-03 12:43:01,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069275783] [2024-11-03 12:43:01,380 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 12:43:01,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-03 12:43:01,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 12:43:01,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-03 12:43:01,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-03 12:43:01,381 INFO L87 Difference]: Start difference. First operand 199 states and 221 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 4 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2024-11-03 12:43:03,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 12:43:03,489 INFO L93 Difference]: Finished difference Result 391 states and 433 transitions. [2024-11-03 12:43:03,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 12:43:03,498 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 4 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) Word has length 78 [2024-11-03 12:43:03,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 12:43:03,499 INFO L225 Difference]: With dead ends: 391 [2024-11-03 12:43:03,499 INFO L226 Difference]: Without dead ends: 195 [2024-11-03 12:43:03,500 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-03 12:43:03,500 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 9 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-03 12:43:03,501 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 85 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-03 12:43:03,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2024-11-03 12:43:03,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 192. [2024-11-03 12:43:03,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 139 states have (on average 1.0503597122302157) internal successors, (146), 142 states have internal predecessors, (146), 32 states have call successors, (32), 20 states have call predecessors, (32), 20 states have return successors, (32), 29 states have call predecessors, (32), 32 states have call successors, (32) [2024-11-03 12:43:03,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 210 transitions. [2024-11-03 12:43:03,523 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 210 transitions. Word has length 78 [2024-11-03 12:43:03,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 12:43:03,523 INFO L471 AbstractCegarLoop]: Abstraction has 192 states and 210 transitions. [2024-11-03 12:43:03,523 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 4 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2024-11-03 12:43:03,524 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 210 transitions. [2024-11-03 12:43:03,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-03 12:43:03,525 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 12:43:03,525 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 15, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 12:43:03,530 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (9)] Forceful destruction successful, exit code 0 [2024-11-03 12:43:03,729 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:43:03,729 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 12:43:03,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 12:43:03,729 INFO L85 PathProgramCache]: Analyzing trace with hash 429086729, now seen corresponding path program 2 times [2024-11-03 12:43:03,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 12:43:03,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [733110677] [2024-11-03 12:43:03,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 12:43:03,730 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 12:43:03,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:43:03,731 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 12:43:03,732 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (10)] Waiting until timeout for monitored process [2024-11-03 12:43:03,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 12:43:03,795 INFO L255 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-03 12:43:03,798 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 12:43:05,052 INFO L134 CoverageAnalysis]: Checked inductivity of 470 backedges. 273 proven. 68 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2024-11-03 12:43:05,052 INFO L311 TraceCheckSpWp]: Computing backward predicates...