/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --cacsl2boogietranslator.allow.undefined.functions true --traceabstraction.smt.solver External_ModelsAndUnsatCoreMode --traceabstraction.command.for.external.solver bitwuzla -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-45.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-03 12:50:55,227 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-03 12:50:55,301 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-03 12:50:55,307 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-03 12:50:55,308 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-03 12:50:55,344 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-03 12:50:55,345 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-03 12:50:55,345 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-03 12:50:55,346 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-03 12:50:55,351 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-03 12:50:55,352 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-03 12:50:55,352 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-03 12:50:55,353 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-03 12:50:55,353 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-03 12:50:55,353 INFO L153 SettingsManager]: * Use SBE=true [2024-11-03 12:50:55,353 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-03 12:50:55,354 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-03 12:50:55,354 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-03 12:50:55,354 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-03 12:50:55,354 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-03 12:50:55,355 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-03 12:50:55,357 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-03 12:50:55,357 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-03 12:50:55,357 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-03 12:50:55,358 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-03 12:50:55,358 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-03 12:50:55,358 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-03 12:50:55,358 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-03 12:50:55,358 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-03 12:50:55,359 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-03 12:50:55,359 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-03 12:50:55,359 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-03 12:50:55,359 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-03 12:50:55,360 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-03 12:50:55,360 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 12:50:55,360 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-03 12:50:55,360 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-03 12:50:55,361 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-03 12:50:55,361 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-03 12:50:55,361 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-03 12:50:55,361 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-03 12:50:55,361 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-03 12:50:55,362 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-03 12:50:55,362 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-03 12:50:55,362 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> bitwuzla [2024-11-03 12:50:55,602 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-03 12:50:55,631 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-03 12:50:55,634 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-03 12:50:55,635 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-03 12:50:55,635 INFO L274 PluginConnector]: CDTParser initialized [2024-11-03 12:50:55,636 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-45.i [2024-11-03 12:50:57,135 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-03 12:50:57,407 INFO L384 CDTParser]: Found 1 translation units. [2024-11-03 12:50:57,408 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-45.i [2024-11-03 12:50:57,430 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/203a042a0/4f30d0b4ec0349b6a0a6753c70a69ab4/FLAG21f186df4 [2024-11-03 12:50:57,446 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/203a042a0/4f30d0b4ec0349b6a0a6753c70a69ab4 [2024-11-03 12:50:57,449 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-03 12:50:57,452 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-03 12:50:57,453 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-03 12:50:57,453 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-03 12:50:57,458 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-03 12:50:57,458 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 12:50:57" (1/1) ... [2024-11-03 12:50:57,459 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40667218 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:50:57, skipping insertion in model container [2024-11-03 12:50:57,460 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 12:50:57" (1/1) ... [2024-11-03 12:50:57,512 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-03 12:50:57,705 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-45.i[916,929] [2024-11-03 12:50:57,881 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 12:50:57,908 INFO L200 MainTranslator]: Completed pre-run [2024-11-03 12:50:57,920 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-45.i[916,929] [2024-11-03 12:50:58,001 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 12:50:58,028 INFO L204 MainTranslator]: Completed translation [2024-11-03 12:50:58,028 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:50:58 WrapperNode [2024-11-03 12:50:58,028 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-03 12:50:58,030 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-03 12:50:58,030 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-03 12:50:58,030 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-03 12:50:58,036 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:50:58" (1/1) ... [2024-11-03 12:50:58,052 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:50:58" (1/1) ... [2024-11-03 12:50:58,090 INFO L138 Inliner]: procedures = 27, calls = 51, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 329 [2024-11-03 12:50:58,090 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-03 12:50:58,091 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-03 12:50:58,091 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-03 12:50:58,091 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-03 12:50:58,101 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:50:58" (1/1) ... [2024-11-03 12:50:58,101 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:50:58" (1/1) ... [2024-11-03 12:50:58,108 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:50:58" (1/1) ... [2024-11-03 12:50:58,126 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-03 12:50:58,127 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:50:58" (1/1) ... [2024-11-03 12:50:58,127 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:50:58" (1/1) ... [2024-11-03 12:50:58,145 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:50:58" (1/1) ... [2024-11-03 12:50:58,149 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:50:58" (1/1) ... [2024-11-03 12:50:58,155 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:50:58" (1/1) ... [2024-11-03 12:50:58,158 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:50:58" (1/1) ... [2024-11-03 12:50:58,165 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-03 12:50:58,166 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-03 12:50:58,166 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-03 12:50:58,166 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-03 12:50:58,171 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:50:58" (1/1) ... [2024-11-03 12:50:58,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 12:50:58,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 12:50:58,218 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-03 12:50:58,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-03 12:50:58,251 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-03 12:50:58,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-03 12:50:58,252 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-03 12:50:58,253 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-03 12:50:58,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-03 12:50:58,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-03 12:50:58,376 INFO L238 CfgBuilder]: Building ICFG [2024-11-03 12:50:58,379 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-03 12:51:14,862 INFO L? ?]: Removed 53 outVars from TransFormulas that were not future-live. [2024-11-03 12:51:14,862 INFO L287 CfgBuilder]: Performing block encoding [2024-11-03 12:51:14,878 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-03 12:51:14,878 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-03 12:51:14,878 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 12:51:14 BoogieIcfgContainer [2024-11-03 12:51:14,879 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-03 12:51:14,881 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-03 12:51:14,881 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-03 12:51:14,884 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-03 12:51:14,885 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 12:50:57" (1/3) ... [2024-11-03 12:51:14,886 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@512098da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 12:51:14, skipping insertion in model container [2024-11-03 12:51:14,886 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:50:58" (2/3) ... [2024-11-03 12:51:14,887 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@512098da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 12:51:14, skipping insertion in model container [2024-11-03 12:51:14,887 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 12:51:14" (3/3) ... [2024-11-03 12:51:14,888 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-45.i [2024-11-03 12:51:14,904 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-03 12:51:14,904 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-03 12:51:14,968 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-03 12:51:14,974 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;@467a9f05, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-03 12:51:14,975 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-03 12:51:14,983 INFO L276 IsEmpty]: Start isEmpty. Operand has 133 states, 92 states have (on average 1.5) internal successors, (138), 93 states have internal predecessors, (138), 38 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-11-03 12:51:15,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2024-11-03 12:51:15,004 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 12:51:15,005 INFO L215 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 12:51:15,006 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 12:51:15,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 12:51:15,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1464402501, now seen corresponding path program 1 times [2024-11-03 12:51:15,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 12:51:15,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1479749809] [2024-11-03 12:51:15,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 12:51:15,023 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 12:51:15,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:51:15,026 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 12:51:15,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Waiting until timeout for monitored process [2024-11-03 12:51:15,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 12:51:15,272 INFO L255 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-03 12:51:15,282 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 12:51:15,357 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 2738 trivial. 0 not checked. [2024-11-03 12:51:15,357 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 12:51:18,218 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 2738 trivial. 0 not checked. [2024-11-03 12:51:18,219 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 12:51:18,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1479749809] [2024-11-03 12:51:18,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1479749809] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 12:51:18,220 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 12:51:18,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2024-11-03 12:51:18,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905659185] [2024-11-03 12:51:18,222 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 12:51:18,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-03 12:51:18,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 12:51:18,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-03 12:51:18,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-03 12:51:18,251 INFO L87 Difference]: Start difference. First operand has 133 states, 92 states have (on average 1.5) internal successors, (138), 93 states have internal predecessors, (138), 38 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Second operand has 2 states, 2 states have (on average 36.0) internal successors, (72), 2 states have internal predecessors, (72), 1 states have call successors, (38), 1 states have call predecessors, (38), 2 states have return successors, (38), 2 states have call predecessors, (38), 1 states have call successors, (38) [2024-11-03 12:51:18,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 12:51:18,285 INFO L93 Difference]: Finished difference Result 258 states and 458 transitions. [2024-11-03 12:51:18,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-03 12:51:18,289 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 36.0) internal successors, (72), 2 states have internal predecessors, (72), 1 states have call successors, (38), 1 states have call predecessors, (38), 2 states have return successors, (38), 2 states have call predecessors, (38), 1 states have call successors, (38) Word has length 257 [2024-11-03 12:51:18,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 12:51:18,296 INFO L225 Difference]: With dead ends: 258 [2024-11-03 12:51:18,296 INFO L226 Difference]: Without dead ends: 128 [2024-11-03 12:51:18,300 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 512 GetRequests, 512 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-03 12:51:18,302 INFO L432 NwaCegarLoop]: 204 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, 204 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 12:51:18,303 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 12:51:18,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2024-11-03 12:51:18,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2024-11-03 12:51:18,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 88 states have (on average 1.4545454545454546) internal successors, (128), 88 states have internal predecessors, (128), 38 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-11-03 12:51:18,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 204 transitions. [2024-11-03 12:51:18,357 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 204 transitions. Word has length 257 [2024-11-03 12:51:18,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 12:51:18,358 INFO L471 AbstractCegarLoop]: Abstraction has 128 states and 204 transitions. [2024-11-03 12:51:18,358 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 36.0) internal successors, (72), 2 states have internal predecessors, (72), 1 states have call successors, (38), 1 states have call predecessors, (38), 2 states have return successors, (38), 2 states have call predecessors, (38), 1 states have call successors, (38) [2024-11-03 12:51:18,358 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 204 transitions. [2024-11-03 12:51:18,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2024-11-03 12:51:18,371 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 12:51:18,371 INFO L215 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 12:51:18,376 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Ended with exit code 0 [2024-11-03 12:51:18,572 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:51:18,573 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 12:51:18,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 12:51:18,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1271422783, now seen corresponding path program 1 times [2024-11-03 12:51:18,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 12:51:18,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [829194707] [2024-11-03 12:51:18,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 12:51:18,574 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 12:51:18,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:51:18,578 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 12:51:18,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Waiting until timeout for monitored process [2024-11-03 12:51:18,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 12:51:18,755 INFO L255 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 12:51:18,765 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 12:51:19,053 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2024-11-03 12:51:19,053 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 12:51:21,922 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2024-11-03 12:51:21,922 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 12:51:21,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [829194707] [2024-11-03 12:51:21,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [829194707] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 12:51:21,923 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 12:51:21,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-11-03 12:51:21,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311374273] [2024-11-03 12:51:21,923 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 12:51:21,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-03 12:51:21,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 12:51:21,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-03 12:51:21,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 12:51:21,927 INFO L87 Difference]: Start difference. First operand 128 states and 204 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2024-11-03 12:51:26,680 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.42s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 12:51:30,685 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 12:51:30,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 12:51:30,965 INFO L93 Difference]: Finished difference Result 372 states and 595 transitions. [2024-11-03 12:51:30,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-03 12:51:30,968 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) Word has length 257 [2024-11-03 12:51:30,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 12:51:30,974 INFO L225 Difference]: With dead ends: 372 [2024-11-03 12:51:30,974 INFO L226 Difference]: Without dead ends: 247 [2024-11-03 12:51:30,975 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 512 GetRequests, 511 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 12:51:30,977 INFO L432 NwaCegarLoop]: 383 mSDtfsCounter, 182 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2024-11-03 12:51:30,977 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 575 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 2 Unknown, 0 Unchecked, 9.0s Time] [2024-11-03 12:51:30,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2024-11-03 12:51:31,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 152. [2024-11-03 12:51:31,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 112 states have (on average 1.4821428571428572) internal successors, (166), 112 states have internal predecessors, (166), 38 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-11-03 12:51:31,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 242 transitions. [2024-11-03 12:51:31,009 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 242 transitions. Word has length 257 [2024-11-03 12:51:31,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 12:51:31,011 INFO L471 AbstractCegarLoop]: Abstraction has 152 states and 242 transitions. [2024-11-03 12:51:31,011 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2024-11-03 12:51:31,011 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 242 transitions. [2024-11-03 12:51:31,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2024-11-03 12:51:31,015 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 12:51:31,016 INFO L215 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 12:51:31,019 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Ended with exit code 0 [2024-11-03 12:51:31,216 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:51:31,217 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 12:51:31,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 12:51:31,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1130874173, now seen corresponding path program 1 times [2024-11-03 12:51:31,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 12:51:31,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [747195533] [2024-11-03 12:51:31,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 12:51:31,218 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 12:51:31,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:51:31,220 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 12:51:31,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Waiting until timeout for monitored process [2024-11-03 12:51:31,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 12:51:31,366 INFO L255 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 12:51:31,372 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 12:51:41,516 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2024-11-03 12:51:41,517 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 12:51:48,428 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2024-11-03 12:51:48,429 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 12:51:48,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [747195533] [2024-11-03 12:51:48,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [747195533] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 12:51:48,429 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 12:51:48,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 3] imperfect sequences [] total 3 [2024-11-03 12:51:48,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335849141] [2024-11-03 12:51:48,430 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 12:51:48,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-03 12:51:48,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 12:51:48,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-03 12:51:48,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 12:51:48,432 INFO L87 Difference]: Start difference. First operand 152 states and 242 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 1 states have call successors, (76), 2 states have call predecessors, (76), 2 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2024-11-03 12:51:53,136 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.46s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 12:51:57,726 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.40s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 12:51:57,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 12:51:57,739 INFO L93 Difference]: Finished difference Result 450 states and 720 transitions. [2024-11-03 12:51:57,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-03 12:51:57,913 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 1 states have call successors, (76), 2 states have call predecessors, (76), 2 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) Word has length 257 [2024-11-03 12:51:57,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 12:51:57,918 INFO L225 Difference]: With dead ends: 450 [2024-11-03 12:51:57,918 INFO L226 Difference]: Without dead ends: 301 [2024-11-03 12:51:57,920 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 512 GetRequests, 510 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 12:51:57,921 INFO L432 NwaCegarLoop]: 200 mSDtfsCounter, 75 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2024-11-03 12:51:57,921 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 393 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 2 Unknown, 0 Unchecked, 9.3s Time] [2024-11-03 12:51:57,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2024-11-03 12:51:57,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 298. [2024-11-03 12:51:57,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 219 states have (on average 1.4840182648401827) internal successors, (325), 219 states have internal predecessors, (325), 76 states have call successors, (76), 2 states have call predecessors, (76), 2 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2024-11-03 12:51:57,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 477 transitions. [2024-11-03 12:51:57,975 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 477 transitions. Word has length 257 [2024-11-03 12:51:57,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 12:51:57,976 INFO L471 AbstractCegarLoop]: Abstraction has 298 states and 477 transitions. [2024-11-03 12:51:57,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 1 states have call successors, (76), 2 states have call predecessors, (76), 2 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2024-11-03 12:51:57,976 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 477 transitions. [2024-11-03 12:51:57,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2024-11-03 12:51:57,979 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 12:51:57,979 INFO L215 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 12:51:57,983 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Ended with exit code 0 [2024-11-03 12:51:58,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:51:58,181 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 12:51:58,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 12:51:58,181 INFO L85 PathProgramCache]: Analyzing trace with hash -707043188, now seen corresponding path program 1 times [2024-11-03 12:51:58,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 12:51:58,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1391718220] [2024-11-03 12:51:58,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 12:51:58,182 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 12:51:58,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:51:58,184 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 12:51:58,185 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Waiting until timeout for monitored process [2024-11-03 12:51:58,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 12:51:58,312 INFO L255 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-03 12:51:58,317 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 12:52:09,252 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2024-11-03 12:52:09,252 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 12:52:19,357 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2024-11-03 12:52:19,358 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 12:52:19,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1391718220] [2024-11-03 12:52:19,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1391718220] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 12:52:19,358 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 12:52:19,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 6] imperfect sequences [] total 7 [2024-11-03 12:52:19,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236834764] [2024-11-03 12:52:19,359 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 12:52:19,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-03 12:52:19,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 12:52:19,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-03 12:52:19,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-03 12:52:19,361 INFO L87 Difference]: Start difference. First operand 298 states and 477 transitions. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 1 states have call successors, (76), 2 states have call predecessors, (76), 2 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2024-11-03 12:52:29,123 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.47s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []