./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-92.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-92.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e9518b729fb33f0de408129e2e0e3cb97ea8e11de366001cefdd2574471f584b --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 02:07:19,676 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 02:07:19,742 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-06 02:07:19,746 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 02:07:19,746 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 02:07:19,762 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 02:07:19,763 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 02:07:19,763 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 02:07:19,763 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 02:07:19,763 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 02:07:19,764 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 02:07:19,764 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 02:07:19,764 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 02:07:19,764 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 02:07:19,764 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 02:07:19,764 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 02:07:19,764 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 02:07:19,764 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 02:07:19,764 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 02:07:19,764 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 02:07:19,765 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 02:07:19,765 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 02:07:19,765 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 02:07:19,765 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 02:07:19,765 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 02:07:19,765 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 02:07:19,765 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 02:07:19,765 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 02:07:19,765 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 02:07:19,765 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 02:07:19,765 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 02:07:19,765 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 02:07:19,765 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 02:07:19,766 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 02:07:19,766 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 02:07:19,766 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 02:07:19,766 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 02:07:19,766 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 02:07:19,766 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 02:07:19,766 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 02:07:19,766 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 02:07:19,766 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 02:07:19,766 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 02:07:19,766 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e9518b729fb33f0de408129e2e0e3cb97ea8e11de366001cefdd2574471f584b [2025-02-06 02:07:20,025 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 02:07:20,033 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 02:07:20,036 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 02:07:20,037 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 02:07:20,037 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 02:07:20,039 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-92.i [2025-02-06 02:07:21,210 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d355c8b85/a1003550b8cd41e7941feba2fee53d3b/FLAG7b4d547d7 [2025-02-06 02:07:21,458 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 02:07:21,458 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-92.i [2025-02-06 02:07:21,467 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d355c8b85/a1003550b8cd41e7941feba2fee53d3b/FLAG7b4d547d7 [2025-02-06 02:07:21,482 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d355c8b85/a1003550b8cd41e7941feba2fee53d3b [2025-02-06 02:07:21,484 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 02:07:21,485 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 02:07:21,486 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 02:07:21,486 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 02:07:21,489 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 02:07:21,490 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 02:07:21" (1/1) ... [2025-02-06 02:07:21,490 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38e4d841 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:07:21, skipping insertion in model container [2025-02-06 02:07:21,490 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 02:07:21" (1/1) ... [2025-02-06 02:07:21,507 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 02:07:21,594 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-92.i[916,929] [2025-02-06 02:07:21,639 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 02:07:21,654 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 02:07:21,663 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-92.i[916,929] [2025-02-06 02:07:21,689 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 02:07:21,712 INFO L204 MainTranslator]: Completed translation [2025-02-06 02:07:21,712 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:07:21 WrapperNode [2025-02-06 02:07:21,712 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 02:07:21,713 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 02:07:21,713 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 02:07:21,713 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 02:07:21,721 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:07:21" (1/1) ... [2025-02-06 02:07:21,732 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:07:21" (1/1) ... [2025-02-06 02:07:21,772 INFO L138 Inliner]: procedures = 26, calls = 35, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 307 [2025-02-06 02:07:21,772 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 02:07:21,773 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 02:07:21,773 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 02:07:21,773 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 02:07:21,787 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:07:21" (1/1) ... [2025-02-06 02:07:21,787 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:07:21" (1/1) ... [2025-02-06 02:07:21,790 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:07:21" (1/1) ... [2025-02-06 02:07:21,808 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]. [2025-02-06 02:07:21,808 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:07:21" (1/1) ... [2025-02-06 02:07:21,808 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:07:21" (1/1) ... [2025-02-06 02:07:21,822 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:07:21" (1/1) ... [2025-02-06 02:07:21,826 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:07:21" (1/1) ... [2025-02-06 02:07:21,831 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:07:21" (1/1) ... [2025-02-06 02:07:21,833 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:07:21" (1/1) ... [2025-02-06 02:07:21,836 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 02:07:21,839 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 02:07:21,839 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 02:07:21,839 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 02:07:21,839 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:07:21" (1/1) ... [2025-02-06 02:07:21,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 02:07:21,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 02:07:21,865 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-06 02:07:21,869 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-06 02:07:21,883 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 02:07:21,883 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-02-06 02:07:21,883 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-02-06 02:07:21,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 02:07:21,883 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 02:07:21,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 02:07:21,956 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 02:07:21,957 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 02:07:22,386 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L194: havoc property_#t~bitwise22#1;havoc property_#t~short23#1;havoc property_#t~ite27#1;havoc property_#t~bitwise24#1;havoc property_#t~ite26#1;havoc property_#t~bitwise25#1;havoc property_#t~short28#1;havoc property_#t~bitwise29#1;havoc property_#t~short30#1;havoc property_#t~ite32#1;havoc property_#t~bitwise31#1;havoc property_#t~short33#1; [2025-02-06 02:07:22,426 INFO L? ?]: Removed 45 outVars from TransFormulas that were not future-live. [2025-02-06 02:07:22,426 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 02:07:22,451 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 02:07:22,453 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 02:07:22,453 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 02:07:22 BoogieIcfgContainer [2025-02-06 02:07:22,453 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 02:07:22,455 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 02:07:22,456 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 02:07:22,459 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 02:07:22,459 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 02:07:21" (1/3) ... [2025-02-06 02:07:22,460 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11a198da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 02:07:22, skipping insertion in model container [2025-02-06 02:07:22,460 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:07:21" (2/3) ... [2025-02-06 02:07:22,460 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11a198da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 02:07:22, skipping insertion in model container [2025-02-06 02:07:22,461 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 02:07:22" (3/3) ... [2025-02-06 02:07:22,462 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount100_file-92.i [2025-02-06 02:07:22,474 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 02:07:22,475 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_operatoramount_amount100_file-92.i that has 2 procedures, 126 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-02-06 02:07:22,547 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 02:07:22,554 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;@344e6ebc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 02:07:22,555 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-06 02:07:22,558 INFO L276 IsEmpty]: Start isEmpty. Operand has 126 states, 101 states have (on average 1.495049504950495) internal successors, (151), 102 states have internal predecessors, (151), 22 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2025-02-06 02:07:22,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2025-02-06 02:07:22,565 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:07:22,566 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 02:07:22,566 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:07:22,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:07:22,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1330227454, now seen corresponding path program 1 times [2025-02-06 02:07:22,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:07:22,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626882074] [2025-02-06 02:07:22,582 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:07:22,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:07:22,679 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 159 statements into 1 equivalence classes. [2025-02-06 02:07:22,692 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 159 of 159 statements. [2025-02-06 02:07:22,693 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:07:22,693 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:07:22,829 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 882 trivial. 0 not checked. [2025-02-06 02:07:22,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:07:22,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626882074] [2025-02-06 02:07:22,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626882074] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 02:07:22,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [123474101] [2025-02-06 02:07:22,835 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:07:22,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:07:22,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 02:07:22,838 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 02:07:22,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-06 02:07:22,894 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 159 statements into 1 equivalence classes. [2025-02-06 02:07:22,958 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 159 of 159 statements. [2025-02-06 02:07:22,958 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:07:22,958 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:07:22,960 INFO L256 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-02-06 02:07:22,966 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 02:07:22,990 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 882 trivial. 0 not checked. [2025-02-06 02:07:22,993 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 02:07:22,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [123474101] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 02:07:22,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 02:07:22,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-02-06 02:07:22,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517233475] [2025-02-06 02:07:22,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 02:07:23,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-06 02:07:23,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:07:23,014 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-06 02:07:23,014 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-06 02:07:23,016 INFO L87 Difference]: Start difference. First operand has 126 states, 101 states have (on average 1.495049504950495) internal successors, (151), 102 states have internal predecessors, (151), 22 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 2 states have call successors, (22) [2025-02-06 02:07:23,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:07:23,054 INFO L93 Difference]: Finished difference Result 246 states and 407 transitions. [2025-02-06 02:07:23,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-06 02:07:23,056 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 2 states have call successors, (22) Word has length 159 [2025-02-06 02:07:23,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:07:23,060 INFO L225 Difference]: With dead ends: 246 [2025-02-06 02:07:23,060 INFO L226 Difference]: Without dead ends: 123 [2025-02-06 02:07:23,062 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-06 02:07:23,064 INFO L435 NwaCegarLoop]: 180 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 02:07:23,064 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 180 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 02:07:23,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2025-02-06 02:07:23,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2025-02-06 02:07:23,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 99 states have (on average 1.4747474747474747) internal successors, (146), 99 states have internal predecessors, (146), 22 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2025-02-06 02:07:23,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 190 transitions. [2025-02-06 02:07:23,089 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 190 transitions. Word has length 159 [2025-02-06 02:07:23,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:07:23,089 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 190 transitions. [2025-02-06 02:07:23,090 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 2 states have call successors, (22) [2025-02-06 02:07:23,090 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 190 transitions. [2025-02-06 02:07:23,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2025-02-06 02:07:23,092 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:07:23,092 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 02:07:23,099 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-06 02:07:23,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-02-06 02:07:23,293 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:07:23,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:07:23,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1058420352, now seen corresponding path program 1 times [2025-02-06 02:07:23,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:07:23,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253303805] [2025-02-06 02:07:23,294 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:07:23,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:07:23,314 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 159 statements into 1 equivalence classes. [2025-02-06 02:07:23,390 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 159 of 159 statements. [2025-02-06 02:07:23,391 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:07:23,391 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:07:23,760 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2025-02-06 02:07:23,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:07:23,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253303805] [2025-02-06 02:07:23,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253303805] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 02:07:23,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 02:07:23,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 02:07:23,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247774987] [2025-02-06 02:07:23,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 02:07:23,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 02:07:23,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:07:23,764 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 02:07:23,765 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 02:07:23,765 INFO L87 Difference]: Start difference. First operand 123 states and 190 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2025-02-06 02:07:23,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:07:23,897 INFO L93 Difference]: Finished difference Result 363 states and 564 transitions. [2025-02-06 02:07:23,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 02:07:23,898 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 159 [2025-02-06 02:07:23,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:07:23,900 INFO L225 Difference]: With dead ends: 363 [2025-02-06 02:07:23,900 INFO L226 Difference]: Without dead ends: 243 [2025-02-06 02:07:23,901 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 02:07:23,901 INFO L435 NwaCegarLoop]: 228 mSDtfsCounter, 134 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 02:07:23,902 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 388 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 02:07:23,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2025-02-06 02:07:23,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 241. [2025-02-06 02:07:23,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 194 states have (on average 1.4742268041237114) internal successors, (286), 194 states have internal predecessors, (286), 44 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2025-02-06 02:07:23,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 374 transitions. [2025-02-06 02:07:23,928 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 374 transitions. Word has length 159 [2025-02-06 02:07:23,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:07:23,929 INFO L471 AbstractCegarLoop]: Abstraction has 241 states and 374 transitions. [2025-02-06 02:07:23,929 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2025-02-06 02:07:23,930 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 374 transitions. [2025-02-06 02:07:23,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2025-02-06 02:07:23,931 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:07:23,931 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 02:07:23,932 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 02:07:23,932 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:07:23,932 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:07:23,932 INFO L85 PathProgramCache]: Analyzing trace with hash 215959146, now seen corresponding path program 1 times [2025-02-06 02:07:23,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:07:23,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558290028] [2025-02-06 02:07:23,933 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:07:23,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:07:23,947 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 160 statements into 1 equivalence classes. [2025-02-06 02:07:23,987 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 160 of 160 statements. [2025-02-06 02:07:23,988 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:07:23,989 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:07:24,583 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2025-02-06 02:07:24,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:07:24,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558290028] [2025-02-06 02:07:24,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558290028] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 02:07:24,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 02:07:24,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-06 02:07:24,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889401773] [2025-02-06 02:07:24,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 02:07:24,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 02:07:24,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:07:24,587 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 02:07:24,588 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-06 02:07:24,588 INFO L87 Difference]: Start difference. First operand 241 states and 374 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2025-02-06 02:07:25,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:07:25,518 INFO L93 Difference]: Finished difference Result 1130 states and 1734 transitions. [2025-02-06 02:07:25,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 02:07:25,519 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 160 [2025-02-06 02:07:25,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:07:25,523 INFO L225 Difference]: With dead ends: 1130 [2025-02-06 02:07:25,523 INFO L226 Difference]: Without dead ends: 1010 [2025-02-06 02:07:25,527 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2025-02-06 02:07:25,529 INFO L435 NwaCegarLoop]: 199 mSDtfsCounter, 1110 mSDsluCounter, 797 mSDsCounter, 0 mSdLazyCounter, 446 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1110 SdHoareTripleChecker+Valid, 996 SdHoareTripleChecker+Invalid, 731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-02-06 02:07:25,530 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1110 Valid, 996 Invalid, 731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [285 Valid, 446 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-02-06 02:07:25,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1010 states. [2025-02-06 02:07:25,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1010 to 613. [2025-02-06 02:07:25,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 613 states, 499 states have (on average 1.4809619238476954) internal successors, (739), 500 states have internal predecessors, (739), 108 states have call successors, (108), 5 states have call predecessors, (108), 5 states have return successors, (108), 107 states have call predecessors, (108), 108 states have call successors, (108) [2025-02-06 02:07:25,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 955 transitions. [2025-02-06 02:07:25,606 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 955 transitions. Word has length 160 [2025-02-06 02:07:25,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:07:25,607 INFO L471 AbstractCegarLoop]: Abstraction has 613 states and 955 transitions. [2025-02-06 02:07:25,607 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2025-02-06 02:07:25,607 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 955 transitions. [2025-02-06 02:07:25,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2025-02-06 02:07:25,609 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:07:25,609 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 02:07:25,610 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 02:07:25,610 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:07:25,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:07:25,610 INFO L85 PathProgramCache]: Analyzing trace with hash -86053314, now seen corresponding path program 1 times [2025-02-06 02:07:25,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:07:25,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550388059] [2025-02-06 02:07:25,610 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:07:25,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:07:25,620 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 160 statements into 1 equivalence classes. [2025-02-06 02:07:25,718 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 160 of 160 statements. [2025-02-06 02:07:25,719 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:07:25,719 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:07:44,075 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2025-02-06 02:07:44,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:07:44,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550388059] [2025-02-06 02:07:44,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550388059] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 02:07:44,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 02:07:44,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-06 02:07:44,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596382249] [2025-02-06 02:07:44,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 02:07:44,078 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 02:07:44,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:07:44,078 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 02:07:44,078 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2025-02-06 02:07:44,079 INFO L87 Difference]: Start difference. First operand 613 states and 955 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2025-02-06 02:07:49,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:07:49,490 INFO L93 Difference]: Finished difference Result 2233 states and 3436 transitions. [2025-02-06 02:07:49,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 02:07:49,492 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 160 [2025-02-06 02:07:49,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:07:49,499 INFO L225 Difference]: With dead ends: 2233 [2025-02-06 02:07:49,500 INFO L226 Difference]: Without dead ends: 1623 [2025-02-06 02:07:49,502 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2025-02-06 02:07:49,504 INFO L435 NwaCegarLoop]: 132 mSDtfsCounter, 548 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 548 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2025-02-06 02:07:49,504 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [548 Valid, 592 Invalid, 596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 594 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2025-02-06 02:07:49,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1623 states. [2025-02-06 02:07:49,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1623 to 780. [2025-02-06 02:07:49,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 780 states, 666 states have (on average 1.5105105105105106) internal successors, (1006), 667 states have internal predecessors, (1006), 108 states have call successors, (108), 5 states have call predecessors, (108), 5 states have return successors, (108), 107 states have call predecessors, (108), 108 states have call successors, (108) [2025-02-06 02:07:49,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 780 states to 780 states and 1222 transitions. [2025-02-06 02:07:49,560 INFO L78 Accepts]: Start accepts. Automaton has 780 states and 1222 transitions. Word has length 160 [2025-02-06 02:07:49,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:07:49,560 INFO L471 AbstractCegarLoop]: Abstraction has 780 states and 1222 transitions. [2025-02-06 02:07:49,560 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2025-02-06 02:07:49,561 INFO L276 IsEmpty]: Start isEmpty. Operand 780 states and 1222 transitions. [2025-02-06 02:07:49,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2025-02-06 02:07:49,563 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:07:49,563 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 02:07:49,563 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 02:07:49,563 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:07:49,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:07:49,564 INFO L85 PathProgramCache]: Analyzing trace with hash -2124109603, now seen corresponding path program 1 times [2025-02-06 02:07:49,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:07:49,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823939019] [2025-02-06 02:07:49,564 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:07:49,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:07:49,573 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 160 statements into 1 equivalence classes. [2025-02-06 02:07:49,627 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 160 of 160 statements. [2025-02-06 02:07:49,627 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:07:49,627 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:08:38,586 WARN L286 SmtUtils]: Spent 7.84s on a formula simplification. DAG size of input: 183 DAG size of output: 123 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)