/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-15.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-03 13:24:26,944 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-03 13:24:27,010 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 13:24:27,019 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-03 13:24:27,019 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-03 13:24:27,047 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-03 13:24:27,047 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-03 13:24:27,048 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-03 13:24:27,050 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-03 13:24:27,050 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-03 13:24:27,051 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-03 13:24:27,051 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-03 13:24:27,052 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-03 13:24:27,052 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-03 13:24:27,052 INFO L153 SettingsManager]: * Use SBE=true [2024-11-03 13:24:27,053 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-03 13:24:27,053 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-03 13:24:27,057 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-03 13:24:27,057 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-03 13:24:27,058 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-03 13:24:27,058 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-03 13:24:27,059 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-03 13:24:27,060 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-03 13:24:27,060 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-03 13:24:27,060 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-03 13:24:27,060 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-03 13:24:27,060 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-03 13:24:27,061 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-03 13:24:27,061 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-03 13:24:27,061 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-03 13:24:27,061 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-03 13:24:27,061 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-03 13:24:27,062 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-03 13:24:27,062 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-03 13:24:27,062 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 13:24:27,062 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-03 13:24:27,062 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-03 13:24:27,063 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-03 13:24:27,063 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-03 13:24:27,063 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-03 13:24:27,064 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-03 13:24:27,064 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-03 13:24:27,064 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-03 13:24:27,064 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-03 13:24:27,065 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> bitwuzla [2024-11-03 13:24:27,289 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-03 13:24:27,313 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-03 13:24:27,316 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-03 13:24:27,317 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-03 13:24:27,317 INFO L274 PluginConnector]: CDTParser initialized [2024-11-03 13:24:27,319 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount50_file-15.i [2024-11-03 13:24:28,725 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-03 13:24:28,948 INFO L384 CDTParser]: Found 1 translation units. [2024-11-03 13:24:28,948 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount50_file-15.i [2024-11-03 13:24:28,961 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1265fdc89/8d16aee043cd4d23b1268846d2f0da73/FLAG536918bfe [2024-11-03 13:24:28,980 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1265fdc89/8d16aee043cd4d23b1268846d2f0da73 [2024-11-03 13:24:28,982 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-03 13:24:28,985 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-03 13:24:28,986 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-03 13:24:28,986 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-03 13:24:28,993 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-03 13:24:28,994 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:24:28" (1/1) ... [2024-11-03 13:24:28,995 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9c8fad3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:24:28, skipping insertion in model container [2024-11-03 13:24:28,995 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:24:28" (1/1) ... [2024-11-03 13:24:29,028 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-03 13:24:29,207 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-15.i[915,928] [2024-11-03 13:24:29,292 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 13:24:29,313 INFO L200 MainTranslator]: Completed pre-run [2024-11-03 13:24:29,325 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-15.i[915,928] [2024-11-03 13:24:29,353 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 13:24:29,372 INFO L204 MainTranslator]: Completed translation [2024-11-03 13:24:29,372 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:24:29 WrapperNode [2024-11-03 13:24:29,373 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-03 13:24:29,374 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-03 13:24:29,374 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-03 13:24:29,374 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-03 13:24:29,379 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:24:29" (1/1) ... [2024-11-03 13:24:29,390 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:24:29" (1/1) ... [2024-11-03 13:24:29,418 INFO L138 Inliner]: procedures = 27, calls = 33, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 148 [2024-11-03 13:24:29,418 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-03 13:24:29,419 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-03 13:24:29,419 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-03 13:24:29,419 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-03 13:24:29,432 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:24:29" (1/1) ... [2024-11-03 13:24:29,433 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:24:29" (1/1) ... [2024-11-03 13:24:29,437 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:24:29" (1/1) ... [2024-11-03 13:24:29,450 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 13:24:29,450 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:24:29" (1/1) ... [2024-11-03 13:24:29,451 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:24:29" (1/1) ... [2024-11-03 13:24:29,461 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:24:29" (1/1) ... [2024-11-03 13:24:29,473 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:24:29" (1/1) ... [2024-11-03 13:24:29,476 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:24:29" (1/1) ... [2024-11-03 13:24:29,482 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:24:29" (1/1) ... [2024-11-03 13:24:29,489 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-03 13:24:29,490 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-03 13:24:29,491 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-03 13:24:29,491 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-03 13:24:29,491 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:24:29" (1/1) ... [2024-11-03 13:24:29,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 13:24:29,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 13:24:29,518 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 13:24:29,521 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 13:24:29,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-03 13:24:29,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-03 13:24:29,547 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-03 13:24:29,547 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-03 13:24:29,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-03 13:24:29,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-03 13:24:29,631 INFO L238 CfgBuilder]: Building ICFG [2024-11-03 13:24:29,633 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-03 13:24:32,290 INFO L? ?]: Removed 16 outVars from TransFormulas that were not future-live. [2024-11-03 13:24:32,290 INFO L287 CfgBuilder]: Performing block encoding [2024-11-03 13:24:32,307 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-03 13:24:32,307 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-03 13:24:32,308 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:24:32 BoogieIcfgContainer [2024-11-03 13:24:32,310 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-03 13:24:32,313 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-03 13:24:32,313 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-03 13:24:32,317 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-03 13:24:32,317 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:24:28" (1/3) ... [2024-11-03 13:24:32,318 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c118844 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:24:32, skipping insertion in model container [2024-11-03 13:24:32,318 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:24:29" (2/3) ... [2024-11-03 13:24:32,319 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c118844 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:24:32, skipping insertion in model container [2024-11-03 13:24:32,319 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:24:32" (3/3) ... [2024-11-03 13:24:32,320 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount50_file-15.i [2024-11-03 13:24:32,333 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-03 13:24:32,334 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-03 13:24:32,389 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-03 13:24:32,395 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;@117de1d4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-03 13:24:32,395 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-03 13:24:32,399 INFO L276 IsEmpty]: Start isEmpty. Operand has 67 states, 44 states have (on average 1.3636363636363635) internal successors, (60), 45 states have internal predecessors, (60), 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 13:24:32,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-11-03 13:24:32,414 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:24:32,415 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 13:24:32,415 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:24:32,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:24:32,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1839978573, now seen corresponding path program 1 times [2024-11-03 13:24:32,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:24:32,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1471098197] [2024-11-03 13:24:32,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:24:32,432 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:24:32,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:24:32,434 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 13:24:32,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Waiting until timeout for monitored process [2024-11-03 13:24:32,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:24:32,605 INFO L255 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-03 13:24:32,619 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:24:32,667 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2024-11-03 13:24:32,668 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:24:32,853 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2024-11-03 13:24:32,854 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:24:32,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1471098197] [2024-11-03 13:24:32,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1471098197] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:24:32,855 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:24:32,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2024-11-03 13:24:32,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573578440] [2024-11-03 13:24:32,858 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:24:32,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-03 13:24:32,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:24:32,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-03 13:24:32,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-03 13:24:32,889 INFO L87 Difference]: Start difference. First operand has 67 states, 44 states have (on average 1.3636363636363635) internal successors, (60), 45 states have internal predecessors, (60), 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 18.5) internal successors, (37), 2 states have internal predecessors, (37), 1 states have call successors, (20), 1 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-03 13:24:32,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:24:32,918 INFO L93 Difference]: Finished difference Result 127 states and 214 transitions. [2024-11-03 13:24:32,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-03 13:24:32,922 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 1 states have call successors, (20), 1 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 1 states have call successors, (20) Word has length 132 [2024-11-03 13:24:32,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:24:32,929 INFO L225 Difference]: With dead ends: 127 [2024-11-03 13:24:32,929 INFO L226 Difference]: Without dead ends: 63 [2024-11-03 13:24:32,933 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 262 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 13:24:32,937 INFO L432 NwaCegarLoop]: 93 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, 93 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 13:24:32,939 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 13:24:32,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-03 13:24:32,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2024-11-03 13:24:32,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 41 states have (on average 1.2926829268292683) internal successors, (53), 41 states have internal predecessors, (53), 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 13:24:32,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 93 transitions. [2024-11-03 13:24:32,985 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 93 transitions. Word has length 132 [2024-11-03 13:24:32,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:24:32,985 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 93 transitions. [2024-11-03 13:24:32,985 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 1 states have call successors, (20), 1 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-03 13:24:32,986 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 93 transitions. [2024-11-03 13:24:32,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-11-03 13:24:32,995 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:24:32,995 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 13:24:32,999 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Ended with exit code 0 [2024-11-03 13:24:33,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:24:33,196 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:24:33,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:24:33,197 INFO L85 PathProgramCache]: Analyzing trace with hash 2103523225, now seen corresponding path program 1 times [2024-11-03 13:24:33,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:24:33,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2122927337] [2024-11-03 13:24:33,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:24:33,198 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:24:33,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:24:33,200 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 13:24:33,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Waiting until timeout for monitored process [2024-11-03 13:24:33,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:24:33,323 INFO L255 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-03 13:24:33,330 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:24:34,587 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 13:24:34,587 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:24:34,860 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 13:24:34,861 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:24:34,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2122927337] [2024-11-03 13:24:34,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2122927337] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:24:34,861 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:24:34,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 6 [2024-11-03 13:24:34,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063739856] [2024-11-03 13:24:34,862 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:24:34,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-03 13:24:34,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:24:34,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-03 13:24:34,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-03 13:24:34,865 INFO L87 Difference]: Start difference. First operand 63 states and 93 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 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 13:24:36,308 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 13:24:37,426 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 13:24:37,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:24:37,482 INFO L93 Difference]: Finished difference Result 204 states and 303 transitions. [2024-11-03 13:24:37,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-03 13:24:37,499 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 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 13:24:37,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:24:37,502 INFO L225 Difference]: With dead ends: 204 [2024-11-03 13:24:37,502 INFO L226 Difference]: Without dead ends: 144 [2024-11-03 13:24:37,503 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 259 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-03 13:24:37,504 INFO L432 NwaCegarLoop]: 88 mSDtfsCounter, 105 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-03 13:24:37,504 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 363 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-03 13:24:37,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-11-03 13:24:37,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 103. [2024-11-03 13:24:37,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 60 states have (on average 1.2) internal successors, (72), 60 states have internal predecessors, (72), 40 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-11-03 13:24:37,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 152 transitions. [2024-11-03 13:24:37,539 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 152 transitions. Word has length 132 [2024-11-03 13:24:37,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:24:37,539 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 152 transitions. [2024-11-03 13:24:37,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 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 13:24:37,540 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 152 transitions. [2024-11-03 13:24:37,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-11-03 13:24:37,541 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:24:37,541 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, 1] [2024-11-03 13:24:37,546 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Forceful destruction successful, exit code 0 [2024-11-03 13:24:37,742 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:24:37,743 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:24:37,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:24:37,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1914306128, now seen corresponding path program 1 times [2024-11-03 13:24:37,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:24:37,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [575276088] [2024-11-03 13:24:37,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:24:37,744 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:24:37,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:24:37,746 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 13:24:37,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Waiting until timeout for monitored process [2024-11-03 13:24:37,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:24:37,826 INFO L255 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-03 13:24:37,829 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:24:37,885 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 13:24:37,885 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:24:38,036 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 13:24:38,036 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:24:38,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [575276088] [2024-11-03 13:24:38,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [575276088] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:24:38,037 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:24:38,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2024-11-03 13:24:38,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215832805] [2024-11-03 13:24:38,037 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:24:38,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-03 13:24:38,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:24:38,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-03 13:24:38,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-03 13:24:38,039 INFO L87 Difference]: Start difference. First operand 103 states and 152 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 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 13:24:39,450 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 13:24:41,029 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 13:24:42,266 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 13:24:42,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:24:42,532 INFO L93 Difference]: Finished difference Result 301 states and 434 transitions. [2024-11-03 13:24:42,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-03 13:24:42,534 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 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 133 [2024-11-03 13:24:42,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:24:42,538 INFO L225 Difference]: With dead ends: 301 [2024-11-03 13:24:42,542 INFO L226 Difference]: Without dead ends: 241 [2024-11-03 13:24:42,543 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-03 13:24:42,544 INFO L432 NwaCegarLoop]: 131 mSDtfsCounter, 221 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-11-03 13:24:42,544 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 256 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2024-11-03 13:24:42,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2024-11-03 13:24:42,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 165. [2024-11-03 13:24:42,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 106 states have (on average 1.2264150943396226) internal successors, (130), 107 states have internal predecessors, (130), 54 states have call successors, (54), 4 states have call predecessors, (54), 4 states have return successors, (54), 53 states have call predecessors, (54), 54 states have call successors, (54) [2024-11-03 13:24:42,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 238 transitions. [2024-11-03 13:24:42,585 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 238 transitions. Word has length 133 [2024-11-03 13:24:42,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:24:42,588 INFO L471 AbstractCegarLoop]: Abstraction has 165 states and 238 transitions. [2024-11-03 13:24:42,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 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 13:24:42,589 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 238 transitions. [2024-11-03 13:24:42,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-11-03 13:24:42,590 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:24:42,591 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, 1] [2024-11-03 13:24:42,598 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Ended with exit code 0 [2024-11-03 13:24:42,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:24:42,791 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:24:42,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:24:42,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1234247758, now seen corresponding path program 1 times [2024-11-03 13:24:42,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:24:42,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1696575304] [2024-11-03 13:24:42,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:24:42,793 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:24:42,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:24:42,799 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 13:24:42,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Waiting until timeout for monitored process [2024-11-03 13:24:42,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:24:42,865 INFO L255 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-03 13:24:42,878 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:24:45,867 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 13:24:45,867 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:24:46,144 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 13:24:46,145 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:24:46,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1696575304] [2024-11-03 13:24:46,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1696575304] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:24:46,145 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:24:46,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 7 [2024-11-03 13:24:46,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987955155] [2024-11-03 13:24:46,146 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:24:46,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-03 13:24:46,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:24:46,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-03 13:24:46,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-03 13:24:46,147 INFO L87 Difference]: Start difference. First operand 165 states and 238 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 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 13:24:47,635 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 13:24:50,174 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 13:24:55,982 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 13:24:58,222 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-03 13:25:00,621 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-03 13:25:04,164 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-03 13:25:23,403 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.35s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-03 13:25:26,749 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.62s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-03 13:25:29,023 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-03 13:25:29,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:25:29,125 INFO L93 Difference]: Finished difference Result 517 states and 754 transitions. [2024-11-03 13:25:29,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-03 13:25:29,140 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 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 133 [2024-11-03 13:25:29,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:25:29,147 INFO L225 Difference]: With dead ends: 517 [2024-11-03 13:25:29,147 INFO L226 Difference]: Without dead ends: 397 [2024-11-03 13:25:29,148 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2024-11-03 13:25:29,149 INFO L432 NwaCegarLoop]: 165 mSDtfsCounter, 206 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.5s IncrementalHoareTripleChecker+Time [2024-11-03 13:25:29,150 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 433 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 40.5s Time] [2024-11-03 13:25:29,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2024-11-03 13:25:29,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 225. [2024-11-03 13:25:29,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 144 states have (on average 1.1875) internal successors, (171), 145 states have internal predecessors, (171), 74 states have call successors, (74), 6 states have call predecessors, (74), 6 states have return successors, (74), 73 states have call predecessors, (74), 74 states have call successors, (74) [2024-11-03 13:25:29,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 319 transitions. [2024-11-03 13:25:29,214 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 319 transitions. Word has length 133 [2024-11-03 13:25:29,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:25:29,214 INFO L471 AbstractCegarLoop]: Abstraction has 225 states and 319 transitions. [2024-11-03 13:25:29,215 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 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 13:25:29,215 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 319 transitions. [2024-11-03 13:25:29,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-11-03 13:25:29,219 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:25:29,219 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, 1] [2024-11-03 13:25:29,223 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Ended with exit code 0 [2024-11-03 13:25:29,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:25:29,420 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:25:29,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:25:29,421 INFO L85 PathProgramCache]: Analyzing trace with hash 798925042, now seen corresponding path program 1 times [2024-11-03 13:25:29,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:25:29,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1712125] [2024-11-03 13:25:29,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:25:29,421 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:25:29,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:25:29,422 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 13:25:29,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (6)] Waiting until timeout for monitored process [2024-11-03 13:25:29,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:25:29,512 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-03 13:25:29,514 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:25:30,474 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 39 proven. 336 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2024-11-03 13:25:30,474 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:25:31,009 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 39 proven. 18 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2024-11-03 13:25:31,010 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:25:31,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1712125] [2024-11-03 13:25:31,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1712125] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 13:25:31,010 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 13:25:31,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2024-11-03 13:25:31,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263066539] [2024-11-03 13:25:31,011 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 13:25:31,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-03 13:25:31,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:25:31,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-03 13:25:31,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-03 13:25:31,012 INFO L87 Difference]: Start difference. First operand 225 states and 319 transitions. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 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 13:25:33,138 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 13:25:36,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:25:36,279 INFO L93 Difference]: Finished difference Result 607 states and 843 transitions. [2024-11-03 13:25:36,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-03 13:25:36,292 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 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 133 [2024-11-03 13:25:36,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:25:36,295 INFO L225 Difference]: With dead ends: 607 [2024-11-03 13:25:36,295 INFO L226 Difference]: Without dead ends: 429 [2024-11-03 13:25:36,296 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=196, Invalid=404, Unknown=0, NotChecked=0, Total=600 [2024-11-03 13:25:36,297 INFO L432 NwaCegarLoop]: 88 mSDtfsCounter, 306 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 272 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 272 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-03 13:25:36,298 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [306 Valid, 262 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [272 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2024-11-03 13:25:36,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2024-11-03 13:25:36,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 229. [2024-11-03 13:25:36,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 146 states have (on average 1.1643835616438356) internal successors, (170), 147 states have internal predecessors, (170), 73 states have call successors, (73), 9 states have call predecessors, (73), 9 states have return successors, (73), 72 states have call predecessors, (73), 73 states have call successors, (73) [2024-11-03 13:25:36,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 316 transitions. [2024-11-03 13:25:36,335 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 316 transitions. Word has length 133 [2024-11-03 13:25:36,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:25:36,335 INFO L471 AbstractCegarLoop]: Abstraction has 229 states and 316 transitions. [2024-11-03 13:25:36,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 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 13:25:36,336 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 316 transitions. [2024-11-03 13:25:36,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-03 13:25:36,337 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:25:36,337 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, 1, 1] [2024-11-03 13:25:36,351 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (6)] Ended with exit code 0 [2024-11-03 13:25:36,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:25:36,538 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:25:36,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:25:36,539 INFO L85 PathProgramCache]: Analyzing trace with hash -3526651, now seen corresponding path program 1 times [2024-11-03 13:25:36,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:25:36,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1877367013] [2024-11-03 13:25:36,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:25:36,539 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:25:36,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:25:36,540 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 13:25:36,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (7)] Waiting until timeout for monitored process [2024-11-03 13:25:36,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:25:36,600 INFO L255 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-03 13:25:36,603 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:25:36,640 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 13:25:36,641 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:25:36,813 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 13:25:36,814 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:25:36,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1877367013] [2024-11-03 13:25:36,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1877367013] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:25:36,814 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:25:36,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2024-11-03 13:25:36,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580699961] [2024-11-03 13:25:36,815 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:25:36,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-03 13:25:36,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:25:36,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-03 13:25:36,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-03 13:25:36,816 INFO L87 Difference]: Start difference. First operand 229 states and 316 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 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 13:25:38,063 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 13:25:38,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:25:38,387 INFO L93 Difference]: Finished difference Result 410 states and 566 transitions. [2024-11-03 13:25:38,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-03 13:25:38,388 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 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 134 [2024-11-03 13:25:38,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:25:38,390 INFO L225 Difference]: With dead ends: 410 [2024-11-03 13:25:38,390 INFO L226 Difference]: Without dead ends: 231 [2024-11-03 13:25:38,390 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 263 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-03 13:25:38,391 INFO L432 NwaCegarLoop]: 159 mSDtfsCounter, 122 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-03 13:25:38,391 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 272 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-03 13:25:38,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2024-11-03 13:25:38,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 227. [2024-11-03 13:25:38,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 144 states have (on average 1.1180555555555556) internal successors, (161), 145 states have internal predecessors, (161), 73 states have call successors, (73), 9 states have call predecessors, (73), 9 states have return successors, (73), 72 states have call predecessors, (73), 73 states have call successors, (73) [2024-11-03 13:25:38,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 307 transitions. [2024-11-03 13:25:38,434 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 307 transitions. Word has length 134 [2024-11-03 13:25:38,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:25:38,435 INFO L471 AbstractCegarLoop]: Abstraction has 227 states and 307 transitions. [2024-11-03 13:25:38,438 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 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 13:25:38,438 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 307 transitions. [2024-11-03 13:25:38,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-03 13:25:38,440 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:25:38,440 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, 1, 1] [2024-11-03 13:25:38,442 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (7)] Ended with exit code 0 [2024-11-03 13:25:38,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:25:38,642 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:25:38,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:25:38,642 INFO L85 PathProgramCache]: Analyzing trace with hash -396553661, now seen corresponding path program 1 times [2024-11-03 13:25:38,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:25:38,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [478880704] [2024-11-03 13:25:38,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:25:38,643 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:25:38,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:25:38,644 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 13:25:38,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (8)] Waiting until timeout for monitored process [2024-11-03 13:25:38,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:25:38,704 INFO L255 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-03 13:25:38,708 INFO L278 TraceCheckSpWp]: Computing forward predicates...