/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_amount50_file-4.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-03 13:27:19,002 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-03 13:27:19,057 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-03 13:27:19,061 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-03 13:27:19,062 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-03 13:27:19,078 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-03 13:27:19,079 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-03 13:27:19,079 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-03 13:27:19,080 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-03 13:27:19,080 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-03 13:27:19,080 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-03 13:27:19,080 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-03 13:27:19,081 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-03 13:27:19,081 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-03 13:27:19,081 INFO L153 SettingsManager]: * Use SBE=true [2024-11-03 13:27:19,081 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-03 13:27:19,082 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-03 13:27:19,082 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-03 13:27:19,082 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-03 13:27:19,082 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-03 13:27:19,083 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-03 13:27:19,086 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-03 13:27:19,086 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-03 13:27:19,086 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-03 13:27:19,086 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-03 13:27:19,086 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-03 13:27:19,086 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-03 13:27:19,087 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-03 13:27:19,087 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-03 13:27:19,087 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-03 13:27:19,087 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-03 13:27:19,087 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-03 13:27:19,087 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-03 13:27:19,088 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-03 13:27:19,088 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 13:27:19,088 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-03 13:27:19,088 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-03 13:27:19,088 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-03 13:27:19,088 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-03 13:27:19,088 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-03 13:27:19,089 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-03 13:27:19,090 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-03 13:27:19,090 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-03 13:27:19,090 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-03 13:27:19,090 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> bitwuzla [2024-11-03 13:27:19,263 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-03 13:27:19,282 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-03 13:27:19,283 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-03 13:27:19,284 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-03 13:27:19,285 INFO L274 PluginConnector]: CDTParser initialized [2024-11-03 13:27:19,286 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount50_file-4.i [2024-11-03 13:27:20,562 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-03 13:27:20,737 INFO L384 CDTParser]: Found 1 translation units. [2024-11-03 13:27:20,737 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount50_file-4.i [2024-11-03 13:27:20,745 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c475c85b/769b93adb8a54f7bb7deb02b84e3e0e6/FLAGaaeb98e66 [2024-11-03 13:27:20,760 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c475c85b/769b93adb8a54f7bb7deb02b84e3e0e6 [2024-11-03 13:27:20,762 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-03 13:27:20,764 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-03 13:27:20,766 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-03 13:27:20,767 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-03 13:27:20,771 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-03 13:27:20,772 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:27:20" (1/1) ... [2024-11-03 13:27:20,773 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31af8292 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:27:20, skipping insertion in model container [2024-11-03 13:27:20,773 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:27:20" (1/1) ... [2024-11-03 13:27:20,798 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-03 13:27:20,944 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_amount50_file-4.i[914,927] [2024-11-03 13:27:21,003 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 13:27:21,022 INFO L200 MainTranslator]: Completed pre-run [2024-11-03 13:27:21,030 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_amount50_file-4.i[914,927] [2024-11-03 13:27:21,048 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 13:27:21,062 INFO L204 MainTranslator]: Completed translation [2024-11-03 13:27:21,062 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:27:21 WrapperNode [2024-11-03 13:27:21,063 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-03 13:27:21,063 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-03 13:27:21,063 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-03 13:27:21,064 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-03 13:27:21,068 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:27:21" (1/1) ... [2024-11-03 13:27:21,076 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:27:21" (1/1) ... [2024-11-03 13:27:21,095 INFO L138 Inliner]: procedures = 27, calls = 33, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 140 [2024-11-03 13:27:21,095 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-03 13:27:21,096 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-03 13:27:21,096 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-03 13:27:21,096 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-03 13:27:21,109 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:27:21" (1/1) ... [2024-11-03 13:27:21,109 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:27:21" (1/1) ... [2024-11-03 13:27:21,113 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:27:21" (1/1) ... [2024-11-03 13:27:21,123 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-03 13:27:21,124 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:27:21" (1/1) ... [2024-11-03 13:27:21,124 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:27:21" (1/1) ... [2024-11-03 13:27:21,130 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:27:21" (1/1) ... [2024-11-03 13:27:21,134 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:27:21" (1/1) ... [2024-11-03 13:27:21,135 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:27:21" (1/1) ... [2024-11-03 13:27:21,142 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:27:21" (1/1) ... [2024-11-03 13:27:21,144 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-03 13:27:21,148 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-03 13:27:21,148 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-03 13:27:21,148 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-03 13:27:21,149 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:27:21" (1/1) ... [2024-11-03 13:27:21,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 13:27:21,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 13:27:21,172 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-03 13:27:21,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-03 13:27:21,192 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-03 13:27:21,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-03 13:27:21,192 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-03 13:27:21,192 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-03 13:27:21,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-03 13:27:21,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-03 13:27:21,253 INFO L238 CfgBuilder]: Building ICFG [2024-11-03 13:27:21,255 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-03 13:27:21,764 INFO L? ?]: Removed 20 outVars from TransFormulas that were not future-live. [2024-11-03 13:27:21,764 INFO L287 CfgBuilder]: Performing block encoding [2024-11-03 13:27:21,779 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-03 13:27:21,779 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-03 13:27:21,779 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:27:21 BoogieIcfgContainer [2024-11-03 13:27:21,780 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-03 13:27:21,783 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-03 13:27:21,783 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-03 13:27:21,785 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-03 13:27:21,785 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:27:20" (1/3) ... [2024-11-03 13:27:21,786 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4590c5c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:27:21, skipping insertion in model container [2024-11-03 13:27:21,786 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:27:21" (2/3) ... [2024-11-03 13:27:21,787 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4590c5c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:27:21, skipping insertion in model container [2024-11-03 13:27:21,787 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:27:21" (3/3) ... [2024-11-03 13:27:21,788 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount50_file-4.i [2024-11-03 13:27:21,807 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-03 13:27:21,808 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-03 13:27:21,853 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-03 13:27:21,857 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;@4a287b0c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-03 13:27:21,858 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-03 13:27:21,861 INFO L276 IsEmpty]: Start isEmpty. Operand has 64 states, 41 states have (on average 1.3902439024390243) internal successors, (57), 42 states have internal predecessors, (57), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-03 13:27:21,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-03 13:27:21,873 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:27:21,873 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:27:21,874 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:27:21,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:27:21,878 INFO L85 PathProgramCache]: Analyzing trace with hash -246695732, now seen corresponding path program 1 times [2024-11-03 13:27:21,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:27:21,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1235248829] [2024-11-03 13:27:21,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:27:21,888 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:27:21,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:27:21,892 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:27:21,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Waiting until timeout for monitored process [2024-11-03 13:27:21,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:27:21,983 INFO L255 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-03 13:27:21,994 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:27:22,044 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-03 13:27:22,045 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:27:22,207 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-03 13:27:22,208 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:27:22,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1235248829] [2024-11-03 13:27:22,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1235248829] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:27:22,208 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:27:22,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2024-11-03 13:27:22,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501081134] [2024-11-03 13:27:22,211 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:27:22,217 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-03 13:27:22,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:27:22,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-03 13:27:22,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-03 13:27:22,238 INFO L87 Difference]: Start difference. First operand has 64 states, 41 states have (on average 1.3902439024390243) internal successors, (57), 42 states have internal predecessors, (57), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-03 13:27:22,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:27:22,256 INFO L93 Difference]: Finished difference Result 121 states and 208 transitions. [2024-11-03 13:27:22,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-03 13:27:22,258 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 129 [2024-11-03 13:27:22,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:27:22,263 INFO L225 Difference]: With dead ends: 121 [2024-11-03 13:27:22,263 INFO L226 Difference]: Without dead ends: 60 [2024-11-03 13:27:22,266 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-03 13:27:22,268 INFO L432 NwaCegarLoop]: 89 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, 89 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 13:27:22,269 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 13:27:22,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-11-03 13:27:22,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2024-11-03 13:27:22,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 38 states have (on average 1.2894736842105263) internal successors, (49), 38 states have internal predecessors, (49), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-03 13:27:22,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 89 transitions. [2024-11-03 13:27:22,302 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 89 transitions. Word has length 129 [2024-11-03 13:27:22,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:27:22,302 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 89 transitions. [2024-11-03 13:27:22,302 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-03 13:27:22,303 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 89 transitions. [2024-11-03 13:27:22,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-03 13:27:22,305 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:27:22,305 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:27:22,308 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Forceful destruction successful, exit code 0 [2024-11-03 13:27:22,505 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:27:22,506 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:27:22,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:27:22,506 INFO L85 PathProgramCache]: Analyzing trace with hash -157864659, now seen corresponding path program 1 times [2024-11-03 13:27:22,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:27:22,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [395370633] [2024-11-03 13:27:22,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:27:22,507 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:27:22,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:27:22,508 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:27:22,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Waiting until timeout for monitored process [2024-11-03 13:27:22,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:27:22,608 INFO L255 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-03 13:27:22,616 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:27:23,416 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-03 13:27:23,417 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:27:23,627 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-03 13:27:23,627 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:27:23,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [395370633] [2024-11-03 13:27:23,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [395370633] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:27:23,628 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:27:23,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 3] imperfect sequences [] total 4 [2024-11-03 13:27:23,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228315930] [2024-11-03 13:27:23,628 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:27:23,629 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 13:27:23,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:27:23,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 13:27:23,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 13:27:23,631 INFO L87 Difference]: Start difference. First operand 60 states and 89 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2024-11-03 13:27:24,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:27:24,502 INFO L93 Difference]: Finished difference Result 230 states and 345 transitions. [2024-11-03 13:27:24,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 13:27:24,507 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) Word has length 130 [2024-11-03 13:27:24,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:27:24,513 INFO L225 Difference]: With dead ends: 230 [2024-11-03 13:27:24,513 INFO L226 Difference]: Without dead ends: 173 [2024-11-03 13:27:24,514 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 13:27:24,515 INFO L432 NwaCegarLoop]: 97 mSDtfsCounter, 69 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-03 13:27:24,516 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 271 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-03 13:27:24,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2024-11-03 13:27:24,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 169. [2024-11-03 13:27:24,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 105 states have (on average 1.276190476190476) internal successors, (134), 105 states have internal predecessors, (134), 60 states have call successors, (60), 3 states have call predecessors, (60), 3 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-03 13:27:24,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 254 transitions. [2024-11-03 13:27:24,556 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 254 transitions. Word has length 130 [2024-11-03 13:27:24,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:27:24,556 INFO L471 AbstractCegarLoop]: Abstraction has 169 states and 254 transitions. [2024-11-03 13:27:24,557 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2024-11-03 13:27:24,557 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 254 transitions. [2024-11-03 13:27:24,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-03 13:27:24,560 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:27:24,560 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:27:24,563 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Ended with exit code 0 [2024-11-03 13:27:24,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:27:24,763 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:27:24,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:27:24,763 INFO L85 PathProgramCache]: Analyzing trace with hash -416030097, now seen corresponding path program 1 times [2024-11-03 13:27:24,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:27:24,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [389802700] [2024-11-03 13:27:24,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:27:24,764 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:27:24,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:27:24,765 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 13:27:24,767 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Waiting until timeout for monitored process [2024-11-03 13:27:24,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:27:24,814 INFO L255 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-03 13:27:24,817 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:27:24,941 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-03 13:27:24,942 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:27:25,068 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-03 13:27:25,068 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:27:25,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [389802700] [2024-11-03 13:27:25,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [389802700] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:27:25,068 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:27:25,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [] total 9 [2024-11-03 13:27:25,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787533545] [2024-11-03 13:27:25,069 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:27:25,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-03 13:27:25,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:27:25,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-03 13:27:25,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-03 13:27:25,072 INFO L87 Difference]: Start difference. First operand 169 states and 254 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-03 13:27:27,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:27:27,704 INFO L93 Difference]: Finished difference Result 764 states and 1103 transitions. [2024-11-03 13:27:27,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-03 13:27:27,705 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 130 [2024-11-03 13:27:27,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:27:27,712 INFO L225 Difference]: With dead ends: 764 [2024-11-03 13:27:27,713 INFO L226 Difference]: Without dead ends: 598 [2024-11-03 13:27:27,714 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2024-11-03 13:27:27,715 INFO L432 NwaCegarLoop]: 154 mSDtfsCounter, 292 mSDsluCounter, 760 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 914 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-03 13:27:27,718 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [292 Valid, 914 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-03 13:27:27,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2024-11-03 13:27:27,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 442. [2024-11-03 13:27:27,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 297 states have (on average 1.2424242424242424) internal successors, (369), 303 states have internal predecessors, (369), 132 states have call successors, (132), 12 states have call predecessors, (132), 12 states have return successors, (132), 126 states have call predecessors, (132), 132 states have call successors, (132) [2024-11-03 13:27:27,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 633 transitions. [2024-11-03 13:27:27,799 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 633 transitions. Word has length 130 [2024-11-03 13:27:27,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:27:27,800 INFO L471 AbstractCegarLoop]: Abstraction has 442 states and 633 transitions. [2024-11-03 13:27:27,800 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-03 13:27:27,800 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 633 transitions. [2024-11-03 13:27:27,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-03 13:27:27,805 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:27:27,805 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:27:27,812 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Ended with exit code 0 [2024-11-03 13:27:28,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:27:28,006 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:27:28,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:27:28,006 INFO L85 PathProgramCache]: Analyzing trace with hash -414183055, now seen corresponding path program 1 times [2024-11-03 13:27:28,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:27:28,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [927755549] [2024-11-03 13:27:28,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:27:28,007 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:27:28,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:27:28,011 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 13:27:28,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Waiting until timeout for monitored process [2024-11-03 13:27:28,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:27:28,063 INFO L255 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-03 13:27:28,066 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:27:28,364 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 93 proven. 54 refuted. 0 times theorem prover too weak. 613 trivial. 0 not checked. [2024-11-03 13:27:28,364 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:27:28,617 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 3 proven. 54 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2024-11-03 13:27:28,617 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:27:28,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [927755549] [2024-11-03 13:27:28,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [927755549] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 13:27:28,617 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 13:27:28,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2024-11-03 13:27:28,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364581177] [2024-11-03 13:27:28,618 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 13:27:28,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-03 13:27:28,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:27:28,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-03 13:27:28,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-03 13:27:28,619 INFO L87 Difference]: Start difference. First operand 442 states and 633 transitions. Second operand has 10 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 2 states have call successors, (38), 2 states have call predecessors, (38), 4 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2024-11-03 13:27:29,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:27:29,799 INFO L93 Difference]: Finished difference Result 719 states and 1003 transitions. [2024-11-03 13:27:29,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-03 13:27:29,818 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 2 states have call successors, (38), 2 states have call predecessors, (38), 4 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) Word has length 130 [2024-11-03 13:27:29,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:27:29,821 INFO L225 Difference]: With dead ends: 719 [2024-11-03 13:27:29,821 INFO L226 Difference]: Without dead ends: 280 [2024-11-03 13:27:29,827 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 249 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2024-11-03 13:27:29,828 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 82 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-03 13:27:29,828 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 210 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-03 13:27:29,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2024-11-03 13:27:29,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 254. [2024-11-03 13:27:29,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 161 states have (on average 1.1055900621118013) internal successors, (178), 161 states have internal predecessors, (178), 80 states have call successors, (80), 12 states have call predecessors, (80), 12 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2024-11-03 13:27:29,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 338 transitions. [2024-11-03 13:27:29,845 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 338 transitions. Word has length 130 [2024-11-03 13:27:29,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:27:29,846 INFO L471 AbstractCegarLoop]: Abstraction has 254 states and 338 transitions. [2024-11-03 13:27:29,846 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 2 states have call successors, (38), 2 states have call predecessors, (38), 4 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2024-11-03 13:27:29,846 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 338 transitions. [2024-11-03 13:27:29,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-03 13:27:29,847 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:27:29,847 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:27:29,850 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Ended with exit code 0 [2024-11-03 13:27:30,049 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:27:30,049 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:27:30,051 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:27:30,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1983351693, now seen corresponding path program 1 times [2024-11-03 13:27:30,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:27:30,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [794819762] [2024-11-03 13:27:30,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:27:30,052 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:27:30,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:27:30,053 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 13:27:30,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (6)] Waiting until timeout for monitored process [2024-11-03 13:27:30,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:27:30,103 INFO L255 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-03 13:27:30,106 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:27:30,329 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 93 proven. 54 refuted. 0 times theorem prover too weak. 613 trivial. 0 not checked. [2024-11-03 13:27:30,329 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:27:30,511 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 3 proven. 54 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2024-11-03 13:27:30,516 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:27:30,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [794819762] [2024-11-03 13:27:30,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [794819762] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 13:27:30,516 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 13:27:30,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2024-11-03 13:27:30,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025869878] [2024-11-03 13:27:30,516 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 13:27:30,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-03 13:27:30,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:27:30,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-03 13:27:30,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-03 13:27:30,518 INFO L87 Difference]: Start difference. First operand 254 states and 338 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 2 states have call successors, (38), 2 states have call predecessors, (38), 4 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2024-11-03 13:27:31,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:27:31,497 INFO L93 Difference]: Finished difference Result 470 states and 617 transitions. [2024-11-03 13:27:31,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-03 13:27:31,499 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 2 states have call successors, (38), 2 states have call predecessors, (38), 4 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) Word has length 131 [2024-11-03 13:27:31,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:27:31,501 INFO L225 Difference]: With dead ends: 470 [2024-11-03 13:27:31,501 INFO L226 Difference]: Without dead ends: 280 [2024-11-03 13:27:31,502 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 253 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=129, Invalid=333, Unknown=0, NotChecked=0, Total=462 [2024-11-03 13:27:31,502 INFO L432 NwaCegarLoop]: 97 mSDtfsCounter, 98 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-03 13:27:31,502 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 354 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-03 13:27:31,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2024-11-03 13:27:31,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 250. [2024-11-03 13:27:31,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 157 states have (on average 1.1019108280254777) internal successors, (173), 157 states have internal predecessors, (173), 80 states have call successors, (80), 12 states have call predecessors, (80), 12 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2024-11-03 13:27:31,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 333 transitions. [2024-11-03 13:27:31,523 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 333 transitions. Word has length 131 [2024-11-03 13:27:31,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:27:31,523 INFO L471 AbstractCegarLoop]: Abstraction has 250 states and 333 transitions. [2024-11-03 13:27:31,523 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 2 states have call successors, (38), 2 states have call predecessors, (38), 4 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2024-11-03 13:27:31,524 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 333 transitions. [2024-11-03 13:27:31,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-03 13:27:31,526 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:27:31,526 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:27:31,529 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (6)] Ended with exit code 0 [2024-11-03 13:27:31,728 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:27:31,729 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:27:31,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:27:31,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1985198735, now seen corresponding path program 1 times [2024-11-03 13:27:31,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:27:31,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [667460827] [2024-11-03 13:27:31,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:27:31,730 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:27:31,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:27:31,731 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 13:27:31,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (7)] Waiting until timeout for monitored process [2024-11-03 13:27:31,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:27:31,776 INFO L255 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 13:27:31,778 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:27:31,985 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-03 13:27:31,985 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:27:32,138 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-03 13:27:32,139 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:27:32,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [667460827] [2024-11-03 13:27:32,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [667460827] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:27:32,139 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:27:32,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 3] imperfect sequences [] total 3 [2024-11-03 13:27:32,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348933980] [2024-11-03 13:27:32,139 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:27:32,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-03 13:27:32,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:27:32,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-03 13:27:32,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 13:27:32,140 INFO L87 Difference]: Start difference. First operand 250 states and 333 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-03 13:27:32,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:27:32,699 INFO L93 Difference]: Finished difference Result 379 states and 504 transitions. [2024-11-03 13:27:32,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-03 13:27:32,711 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) Word has length 131 [2024-11-03 13:27:32,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:27:32,713 INFO L225 Difference]: With dead ends: 379 [2024-11-03 13:27:32,713 INFO L226 Difference]: Without dead ends: 189 [2024-11-03 13:27:32,714 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 259 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 13:27:32,715 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 10 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-03 13:27:32,715 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 80 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-03 13:27:32,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2024-11-03 13:27:32,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 187. [2024-11-03 13:27:32,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 117 states have (on average 1.0940170940170941) internal successors, (128), 117 states have internal predecessors, (128), 60 states have call successors, (60), 9 states have call predecessors, (60), 9 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-03 13:27:32,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 248 transitions. [2024-11-03 13:27:32,729 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 248 transitions. Word has length 131 [2024-11-03 13:27:32,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:27:32,730 INFO L471 AbstractCegarLoop]: Abstraction has 187 states and 248 transitions. [2024-11-03 13:27:32,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-03 13:27:32,730 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 248 transitions. [2024-11-03 13:27:32,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-03 13:27:32,731 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:27:32,731 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:27:32,734 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (7)] Forceful destruction successful, exit code 0 [2024-11-03 13:27:32,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:27:32,932 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:27:32,932 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:27:32,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1191285994, now seen corresponding path program 1 times [2024-11-03 13:27:32,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:27:32,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [770758550] [2024-11-03 13:27:32,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:27:32,933 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:27:32,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:27:32,934 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 13:27:32,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (8)] Waiting until timeout for monitored process [2024-11-03 13:27:32,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:27:32,975 INFO L255 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-03 13:27:32,977 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:27:33,464 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-03 13:27:33,464 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:27:33,576 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-03 13:27:33,576 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:27:33,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [770758550] [2024-11-03 13:27:33,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [770758550] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:27:33,576 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:27:33,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 4] imperfect sequences [] total 9 [2024-11-03 13:27:33,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919451974] [2024-11-03 13:27:33,577 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:27:33,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-03 13:27:33,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:27:33,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-03 13:27:33,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-03 13:27:33,578 INFO L87 Difference]: Start difference. First operand 187 states and 248 transitions. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 2 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2024-11-03 13:27:34,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:27:34,314 INFO L93 Difference]: Finished difference Result 313 states and 415 transitions. [2024-11-03 13:27:34,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-03 13:27:34,315 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 2 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) Word has length 131 [2024-11-03 13:27:34,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:27:34,317 INFO L225 Difference]: With dead ends: 313 [2024-11-03 13:27:34,317 INFO L226 Difference]: Without dead ends: 190 [2024-11-03 13:27:34,317 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2024-11-03 13:27:34,318 INFO L432 NwaCegarLoop]: 128 mSDtfsCounter, 118 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-03 13:27:34,318 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 276 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-03 13:27:34,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2024-11-03 13:27:34,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 188. [2024-11-03 13:27:34,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 118 states have (on average 1.0847457627118644) internal successors, (128), 118 states have internal predecessors, (128), 60 states have call successors, (60), 9 states have call predecessors, (60), 9 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-03 13:27:34,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 248 transitions. [2024-11-03 13:27:34,332 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 248 transitions. Word has length 131 [2024-11-03 13:27:34,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:27:34,333 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 248 transitions. [2024-11-03 13:27:34,333 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 2 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2024-11-03 13:27:34,333 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 248 transitions. [2024-11-03 13:27:34,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-03 13:27:34,334 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:27:34,334 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:27:34,339 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (8)] Forceful destruction successful, exit code 0 [2024-11-03 13:27:34,535 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:27:34,536 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:27:34,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:27:34,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1871344364, now seen corresponding path program 1 times [2024-11-03 13:27:34,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:27:34,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [819133377] [2024-11-03 13:27:34,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:27:34,537 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:27:34,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:27:34,538 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 13:27:34,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (9)] Waiting until timeout for monitored process [2024-11-03 13:27:34,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:27:34,578 INFO L255 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-03 13:27:34,581 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:27:35,218 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 387 proven. 33 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked. [2024-11-03 13:27:35,218 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:27:36,978 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 24 proven. 33 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2024-11-03 13:27:36,979 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:27:36,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [819133377] [2024-11-03 13:27:36,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [819133377] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 13:27:36,979 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 13:27:36,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2024-11-03 13:27:36,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964464299] [2024-11-03 13:27:36,979 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 13:27:36,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-03 13:27:36,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:27:36,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-03 13:27:36,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2024-11-03 13:27:36,980 INFO L87 Difference]: Start difference. First operand 188 states and 248 transitions. Second operand has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 14 states have internal predecessors, (66), 4 states have call successors, (40), 3 states have call predecessors, (40), 5 states have return successors, (40), 4 states have call predecessors, (40), 4 states have call successors, (40) [2024-11-03 13:27:38,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:27:38,299 INFO L93 Difference]: Finished difference Result 274 states and 352 transitions. [2024-11-03 13:27:38,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-03 13:27:38,300 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 14 states have internal predecessors, (66), 4 states have call successors, (40), 3 states have call predecessors, (40), 5 states have return successors, (40), 4 states have call predecessors, (40), 4 states have call successors, (40) Word has length 131 [2024-11-03 13:27:38,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:27:38,302 INFO L225 Difference]: With dead ends: 274 [2024-11-03 13:27:38,302 INFO L226 Difference]: Without dead ends: 150 [2024-11-03 13:27:38,303 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 251 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=250, Invalid=506, Unknown=0, NotChecked=0, Total=756 [2024-11-03 13:27:38,303 INFO L432 NwaCegarLoop]: 93 mSDtfsCounter, 215 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-03 13:27:38,303 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 222 Invalid, 520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-03 13:27:38,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2024-11-03 13:27:38,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 70. [2024-11-03 13:27:38,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 45 states have (on average 1.0666666666666667) internal successors, (48), 45 states have internal predecessors, (48), 20 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-03 13:27:38,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 88 transitions. [2024-11-03 13:27:38,312 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 88 transitions. Word has length 131 [2024-11-03 13:27:38,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:27:38,312 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 88 transitions. [2024-11-03 13:27:38,312 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 14 states have internal predecessors, (66), 4 states have call successors, (40), 3 states have call predecessors, (40), 5 states have return successors, (40), 4 states have call predecessors, (40), 4 states have call successors, (40) [2024-11-03 13:27:38,313 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 88 transitions. [2024-11-03 13:27:38,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-11-03 13:27:38,313 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:27:38,313 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:27:38,319 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (9)] Ended with exit code 0 [2024-11-03 13:27:38,514 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:27:38,514 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:27:38,514 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:27:38,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1288394764, now seen corresponding path program 1 times [2024-11-03 13:27:38,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:27:38,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1831409792] [2024-11-03 13:27:38,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:27:38,515 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:27:38,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:27:38,516 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 13:27:38,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (10)] Waiting until timeout for monitored process [2024-11-03 13:27:38,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:27:38,552 INFO L255 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-03 13:27:38,554 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:27:38,973 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-03 13:27:38,973 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:27:39,140 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-03 13:27:39,140 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:27:39,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1831409792] [2024-11-03 13:27:39,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1831409792] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:27:39,141 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:27:39,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [] total 8 [2024-11-03 13:27:39,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124861405] [2024-11-03 13:27:39,141 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:27:39,141 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-03 13:27:39,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:27:39,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-03 13:27:39,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-03 13:27:39,142 INFO L87 Difference]: Start difference. First operand 70 states and 88 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 2 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2024-11-03 13:27:40,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:27:40,374 INFO L93 Difference]: Finished difference Result 205 states and 259 transitions. [2024-11-03 13:27:40,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-03 13:27:40,385 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 2 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) Word has length 132 [2024-11-03 13:27:40,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:27:40,386 INFO L225 Difference]: With dead ends: 205 [2024-11-03 13:27:40,386 INFO L226 Difference]: Without dead ends: 138 [2024-11-03 13:27:40,386 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-11-03 13:27:40,387 INFO L432 NwaCegarLoop]: 74 mSDtfsCounter, 56 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-03 13:27:40,387 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 345 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-03 13:27:40,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2024-11-03 13:27:40,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 122. [2024-11-03 13:27:40,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 73 states have (on average 1.0410958904109588) internal successors, (76), 73 states have internal predecessors, (76), 40 states have call successors, (40), 8 states have call predecessors, (40), 8 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-11-03 13:27:40,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 156 transitions. [2024-11-03 13:27:40,404 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 156 transitions. Word has length 132 [2024-11-03 13:27:40,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:27:40,405 INFO L471 AbstractCegarLoop]: Abstraction has 122 states and 156 transitions. [2024-11-03 13:27:40,405 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 2 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2024-11-03 13:27:40,405 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 156 transitions. [2024-11-03 13:27:40,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-11-03 13:27:40,406 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:27:40,406 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:27:40,411 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (10)] Ended with exit code 0 [2024-11-03 13:27:40,606 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:27:40,606 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:27:40,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:27:40,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1995455282, now seen corresponding path program 1 times [2024-11-03 13:27:40,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:27:40,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [318583698] [2024-11-03 13:27:40,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:27:40,607 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:27:40,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:27:40,608 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:27:40,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (11)] Waiting until timeout for monitored process [2024-11-03 13:27:40,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:27:40,653 INFO L255 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-03 13:27:40,656 INFO L278 TraceCheckSpWp]: Computing forward predicates...