/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_amount100_file-96.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-03 12:39:42,388 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-03 12:39:42,467 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 12:39:42,472 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-03 12:39:42,472 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-03 12:39:42,503 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-03 12:39:42,503 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-03 12:39:42,504 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-03 12:39:42,504 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-03 12:39:42,506 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-03 12:39:42,506 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-03 12:39:42,506 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-03 12:39:42,507 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-03 12:39:42,507 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-03 12:39:42,507 INFO L153 SettingsManager]: * Use SBE=true [2024-11-03 12:39:42,508 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-03 12:39:42,508 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-03 12:39:42,508 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-03 12:39:42,509 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-03 12:39:42,509 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-03 12:39:42,512 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-03 12:39:42,513 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-03 12:39:42,513 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-03 12:39:42,513 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-03 12:39:42,513 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-03 12:39:42,514 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-03 12:39:42,514 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-03 12:39:42,514 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-03 12:39:42,514 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-03 12:39:42,514 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-03 12:39:42,515 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-03 12:39:42,515 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-03 12:39:42,516 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-03 12:39:42,516 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-03 12:39:42,516 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 12:39:42,517 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-03 12:39:42,517 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-03 12:39:42,517 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-03 12:39:42,517 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-03 12:39:42,517 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-03 12:39:42,517 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-03 12:39:42,518 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-03 12:39:42,518 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-03 12:39:42,518 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-03 12:39:42,518 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> bitwuzla [2024-11-03 12:39:42,751 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-03 12:39:42,782 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-03 12:39:42,788 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-03 12:39:42,789 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-03 12:39:42,789 INFO L274 PluginConnector]: CDTParser initialized [2024-11-03 12:39:42,791 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-96.i [2024-11-03 12:39:44,161 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-03 12:39:44,361 INFO L384 CDTParser]: Found 1 translation units. [2024-11-03 12:39:44,362 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-96.i [2024-11-03 12:39:44,371 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8754fc72f/778fd6560d82493f8b577ac5fb74035a/FLAG73827fb78 [2024-11-03 12:39:44,384 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8754fc72f/778fd6560d82493f8b577ac5fb74035a [2024-11-03 12:39:44,387 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-03 12:39:44,388 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-03 12:39:44,389 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-03 12:39:44,389 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-03 12:39:44,393 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-03 12:39:44,394 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 12:39:44" (1/1) ... [2024-11-03 12:39:44,395 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@231c895c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:39:44, skipping insertion in model container [2024-11-03 12:39:44,395 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 12:39:44" (1/1) ... [2024-11-03 12:39:44,430 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-03 12:39:44,621 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_amount100_file-96.i[916,929] [2024-11-03 12:39:44,739 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 12:39:44,758 INFO L200 MainTranslator]: Completed pre-run [2024-11-03 12:39:44,773 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_amount100_file-96.i[916,929] [2024-11-03 12:39:44,829 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 12:39:44,853 INFO L204 MainTranslator]: Completed translation [2024-11-03 12:39:44,854 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:39:44 WrapperNode [2024-11-03 12:39:44,854 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-03 12:39:44,855 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-03 12:39:44,855 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-03 12:39:44,856 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-03 12:39:44,862 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:39:44" (1/1) ... [2024-11-03 12:39:44,881 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:39:44" (1/1) ... [2024-11-03 12:39:44,920 INFO L138 Inliner]: procedures = 27, calls = 41, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 213 [2024-11-03 12:39:44,920 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-03 12:39:44,921 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-03 12:39:44,921 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-03 12:39:44,921 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-03 12:39:44,933 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:39:44" (1/1) ... [2024-11-03 12:39:44,933 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:39:44" (1/1) ... [2024-11-03 12:39:44,945 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:39:44" (1/1) ... [2024-11-03 12:39:44,961 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 12:39:44,962 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:39:44" (1/1) ... [2024-11-03 12:39:44,962 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:39:44" (1/1) ... [2024-11-03 12:39:44,979 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:39:44" (1/1) ... [2024-11-03 12:39:44,988 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:39:44" (1/1) ... [2024-11-03 12:39:44,991 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:39:44" (1/1) ... [2024-11-03 12:39:44,993 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:39:44" (1/1) ... [2024-11-03 12:39:44,999 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-03 12:39:45,000 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-03 12:39:45,001 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-03 12:39:45,001 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-03 12:39:45,001 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:39:44" (1/1) ... [2024-11-03 12:39:45,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 12:39:45,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 12:39:45,033 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 12:39:45,037 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 12:39:45,064 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-03 12:39:45,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-03 12:39:45,064 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-03 12:39:45,064 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-03 12:39:45,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-03 12:39:45,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-03 12:39:45,163 INFO L238 CfgBuilder]: Building ICFG [2024-11-03 12:39:45,166 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-03 12:39:46,674 INFO L? ?]: Removed 24 outVars from TransFormulas that were not future-live. [2024-11-03 12:39:46,674 INFO L287 CfgBuilder]: Performing block encoding [2024-11-03 12:39:46,695 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-03 12:39:46,695 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-03 12:39:46,695 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 12:39:46 BoogieIcfgContainer [2024-11-03 12:39:46,696 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-03 12:39:46,718 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-03 12:39:46,718 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-03 12:39:46,722 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-03 12:39:46,722 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 12:39:44" (1/3) ... [2024-11-03 12:39:46,722 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1134772b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 12:39:46, skipping insertion in model container [2024-11-03 12:39:46,723 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:39:44" (2/3) ... [2024-11-03 12:39:46,723 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1134772b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 12:39:46, skipping insertion in model container [2024-11-03 12:39:46,723 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 12:39:46" (3/3) ... [2024-11-03 12:39:46,724 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount100_file-96.i [2024-11-03 12:39:46,739 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-03 12:39:46,739 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-03 12:39:46,795 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-03 12:39:46,802 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;@3208ea56, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-03 12:39:46,803 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-03 12:39:46,807 INFO L276 IsEmpty]: Start isEmpty. Operand has 91 states, 60 states have (on average 1.4333333333333333) internal successors, (86), 61 states have internal predecessors, (86), 28 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-11-03 12:39:46,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2024-11-03 12:39:46,819 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 12:39:46,820 INFO L215 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:39:46,820 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 12:39:46,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 12:39:46,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1235426740, now seen corresponding path program 1 times [2024-11-03 12:39:46,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 12:39:46,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1573987514] [2024-11-03 12:39:46,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 12:39:46,836 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 12:39:46,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:39:46,838 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 12:39:46,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Waiting until timeout for monitored process [2024-11-03 12:39:47,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 12:39:47,036 INFO L255 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-03 12:39:47,053 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 12:39:47,114 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 1458 trivial. 0 not checked. [2024-11-03 12:39:47,115 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 12:39:47,352 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 1458 trivial. 0 not checked. [2024-11-03 12:39:47,353 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 12:39:47,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1573987514] [2024-11-03 12:39:47,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1573987514] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 12:39:47,356 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 12:39:47,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2024-11-03 12:39:47,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023077956] [2024-11-03 12:39:47,358 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 12:39:47,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-03 12:39:47,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 12:39:47,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-03 12:39:47,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-03 12:39:47,391 INFO L87 Difference]: Start difference. First operand has 91 states, 60 states have (on average 1.4333333333333333) internal successors, (86), 61 states have internal predecessors, (86), 28 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Second operand has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 1 states have call successors, (28), 1 states have call predecessors, (28), 2 states have return successors, (28), 2 states have call predecessors, (28), 1 states have call successors, (28) [2024-11-03 12:39:47,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 12:39:47,417 INFO L93 Difference]: Finished difference Result 175 states and 306 transitions. [2024-11-03 12:39:47,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-03 12:39:47,419 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 1 states have call successors, (28), 1 states have call predecessors, (28), 2 states have return successors, (28), 2 states have call predecessors, (28), 1 states have call successors, (28) Word has length 183 [2024-11-03 12:39:47,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 12:39:47,425 INFO L225 Difference]: With dead ends: 175 [2024-11-03 12:39:47,425 INFO L226 Difference]: Without dead ends: 87 [2024-11-03 12:39:47,428 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 364 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 12:39:47,431 INFO L432 NwaCegarLoop]: 135 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, 135 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 12:39:47,432 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 12:39:47,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-11-03 12:39:47,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2024-11-03 12:39:47,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 57 states have (on average 1.3859649122807018) internal successors, (79), 57 states have internal predecessors, (79), 28 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-11-03 12:39:47,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 135 transitions. [2024-11-03 12:39:47,486 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 135 transitions. Word has length 183 [2024-11-03 12:39:47,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 12:39:47,487 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 135 transitions. [2024-11-03 12:39:47,487 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 1 states have call successors, (28), 1 states have call predecessors, (28), 2 states have return successors, (28), 2 states have call predecessors, (28), 1 states have call successors, (28) [2024-11-03 12:39:47,487 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 135 transitions. [2024-11-03 12:39:47,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2024-11-03 12:39:47,491 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 12:39:47,491 INFO L215 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:39:47,493 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Ended with exit code 0 [2024-11-03 12:39:47,691 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:39:47,692 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 12:39:47,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 12:39:47,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1302927532, now seen corresponding path program 1 times [2024-11-03 12:39:47,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 12:39:47,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [432704685] [2024-11-03 12:39:47,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 12:39:47,694 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 12:39:47,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:39:47,696 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 12:39:47,698 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Waiting until timeout for monitored process [2024-11-03 12:39:47,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 12:39:47,864 INFO L255 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-03 12:39:47,874 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 12:39:48,464 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-11-03 12:39:48,465 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 12:39:48,790 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-11-03 12:39:48,791 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 12:39:48,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [432704685] [2024-11-03 12:39:48,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [432704685] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 12:39:48,791 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 12:39:48,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 6 [2024-11-03 12:39:48,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533679659] [2024-11-03 12:39:48,792 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 12:39:48,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-03 12:39:48,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 12:39:48,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-03 12:39:48,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-03 12:39:48,796 INFO L87 Difference]: Start difference. First operand 87 states and 135 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 2 states have call successors, (56), 2 states have call predecessors, (56), 2 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2024-11-03 12:39:50,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 12:39:50,918 INFO L93 Difference]: Finished difference Result 401 states and 621 transitions. [2024-11-03 12:39:50,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-03 12:39:50,919 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 2 states have call successors, (56), 2 states have call predecessors, (56), 2 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) Word has length 183 [2024-11-03 12:39:50,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 12:39:50,923 INFO L225 Difference]: With dead ends: 401 [2024-11-03 12:39:50,923 INFO L226 Difference]: Without dead ends: 317 [2024-11-03 12:39:50,925 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 362 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2024-11-03 12:39:50,926 INFO L432 NwaCegarLoop]: 151 mSDtfsCounter, 244 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 767 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-03 12:39:50,926 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 767 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-03 12:39:50,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2024-11-03 12:39:50,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 163. [2024-11-03 12:39:50,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 104 states have (on average 1.3365384615384615) internal successors, (139), 104 states have internal predecessors, (139), 56 states have call successors, (56), 2 states have call predecessors, (56), 2 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2024-11-03 12:39:50,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 251 transitions. [2024-11-03 12:39:50,970 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 251 transitions. Word has length 183 [2024-11-03 12:39:50,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 12:39:50,970 INFO L471 AbstractCegarLoop]: Abstraction has 163 states and 251 transitions. [2024-11-03 12:39:50,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 2 states have call successors, (56), 2 states have call predecessors, (56), 2 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2024-11-03 12:39:50,971 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 251 transitions. [2024-11-03 12:39:50,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2024-11-03 12:39:50,974 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 12:39:50,975 INFO L215 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:39:50,978 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Ended with exit code 0 [2024-11-03 12:39:51,176 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:39:51,177 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 12:39:51,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 12:39:51,178 INFO L85 PathProgramCache]: Analyzing trace with hash -23063854, now seen corresponding path program 1 times [2024-11-03 12:39:51,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 12:39:51,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [461903300] [2024-11-03 12:39:51,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 12:39:51,178 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 12:39:51,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:39:51,180 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 12:39:51,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Waiting until timeout for monitored process [2024-11-03 12:39:51,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 12:39:51,282 INFO L255 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-03 12:39:51,291 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 12:39:52,582 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-11-03 12:39:52,582 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 12:39:52,934 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-11-03 12:39:52,934 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 12:39:52,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [461903300] [2024-11-03 12:39:52,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [461903300] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 12:39:52,935 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 12:39:52,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [] total 8 [2024-11-03 12:39:52,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468527271] [2024-11-03 12:39:52,935 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 12:39:52,936 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-03 12:39:52,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 12:39:52,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-03 12:39:52,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-03 12:39:52,937 INFO L87 Difference]: Start difference. First operand 163 states and 251 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 2 states have call successors, (56), 2 states have call predecessors, (56), 2 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2024-11-03 12:39:55,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 12:39:55,919 INFO L93 Difference]: Finished difference Result 627 states and 961 transitions. [2024-11-03 12:39:55,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-03 12:39:55,935 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 2 states have call successors, (56), 2 states have call predecessors, (56), 2 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) Word has length 183 [2024-11-03 12:39:55,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 12:39:55,939 INFO L225 Difference]: With dead ends: 627 [2024-11-03 12:39:55,939 INFO L226 Difference]: Without dead ends: 467 [2024-11-03 12:39:55,941 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 360 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2024-11-03 12:39:55,942 INFO L432 NwaCegarLoop]: 144 mSDtfsCounter, 342 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 622 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-03 12:39:55,942 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [342 Valid, 622 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-03 12:39:55,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2024-11-03 12:39:56,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 401. [2024-11-03 12:39:56,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 255 states have (on average 1.3254901960784313) internal successors, (338), 255 states have internal predecessors, (338), 140 states have call successors, (140), 5 states have call predecessors, (140), 5 states have return successors, (140), 140 states have call predecessors, (140), 140 states have call successors, (140) [2024-11-03 12:39:56,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 618 transitions. [2024-11-03 12:39:56,015 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 618 transitions. Word has length 183 [2024-11-03 12:39:56,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 12:39:56,016 INFO L471 AbstractCegarLoop]: Abstraction has 401 states and 618 transitions. [2024-11-03 12:39:56,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 2 states have call successors, (56), 2 states have call predecessors, (56), 2 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2024-11-03 12:39:56,016 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 618 transitions. [2024-11-03 12:39:56,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2024-11-03 12:39:56,021 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 12:39:56,022 INFO L215 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:39:56,026 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Forceful destruction successful, exit code 0 [2024-11-03 12:39:56,222 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:39:56,223 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 12:39:56,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 12:39:56,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1590603799, now seen corresponding path program 1 times [2024-11-03 12:39:56,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 12:39:56,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [525456667] [2024-11-03 12:39:56,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 12:39:56,224 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 12:39:56,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:39:56,226 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 12:39:56,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Waiting until timeout for monitored process [2024-11-03 12:39:56,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 12:39:56,339 INFO L255 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-03 12:39:56,357 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 12:41:15,735 WARN L286 SmtUtils]: Spent 6.50s on a formula simplification that was a NOOP. DAG size: 156 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)