./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-50.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_loopvsstraightlinecode_100-1loop_file-50.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 827549bec0a21b6c131dbbd0a60cc786df11c023034a28cad7dacc960e99c988 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 00:47:58,279 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 00:47:58,329 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-06 00:47:58,333 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 00:47:58,335 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 00:47:58,357 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 00:47:58,358 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 00:47:58,359 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 00:47:58,359 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 00:47:58,359 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 00:47:58,360 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 00:47:58,360 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 00:47:58,360 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 00:47:58,361 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 00:47:58,361 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 00:47:58,361 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 00:47:58,361 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 00:47:58,361 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 00:47:58,361 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 00:47:58,361 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 00:47:58,362 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 00:47:58,362 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 00:47:58,362 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 00:47:58,362 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 00:47:58,362 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 00:47:58,362 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 00:47:58,362 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 00:47:58,362 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 00:47:58,362 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 00:47:58,362 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 00:47:58,362 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 00:47:58,362 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 00:47:58,362 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 00:47:58,363 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 00:47:58,363 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 00:47:58,363 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 00:47:58,363 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 00:47:58,363 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 00:47:58,363 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 00:47:58,364 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 00:47:58,364 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 00:47:58,364 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 00:47:58,364 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 00:47:58,364 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 -> 827549bec0a21b6c131dbbd0a60cc786df11c023034a28cad7dacc960e99c988 [2025-02-06 00:47:58,607 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 00:47:58,612 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 00:47:58,613 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 00:47:58,615 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 00:47:58,615 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 00:47:58,616 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-50.i [2025-02-06 00:47:59,766 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/8e780d761/1ed49b7e1e8c403ea6e1257157b8c58c/FLAGe68a11542 [2025-02-06 00:48:00,037 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 00:48:00,040 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-50.i [2025-02-06 00:48:00,048 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/8e780d761/1ed49b7e1e8c403ea6e1257157b8c58c/FLAGe68a11542 [2025-02-06 00:48:00,333 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/8e780d761/1ed49b7e1e8c403ea6e1257157b8c58c [2025-02-06 00:48:00,335 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 00:48:00,336 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 00:48:00,338 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 00:48:00,338 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 00:48:00,341 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 00:48:00,342 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 12:48:00" (1/1) ... [2025-02-06 00:48:00,344 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b5f6f16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:48:00, skipping insertion in model container [2025-02-06 00:48:00,344 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 12:48:00" (1/1) ... [2025-02-06 00:48:00,375 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 00:48:00,523 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_loopvsstraightlinecode_100-1loop_file-50.i[916,929] [2025-02-06 00:48:00,594 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 00:48:00,602 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 00:48:00,609 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_loopvsstraightlinecode_100-1loop_file-50.i[916,929] [2025-02-06 00:48:00,635 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 00:48:00,648 INFO L204 MainTranslator]: Completed translation [2025-02-06 00:48:00,649 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:48:00 WrapperNode [2025-02-06 00:48:00,649 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 00:48:00,653 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 00:48:00,653 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 00:48:00,654 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 00:48:00,658 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:48:00" (1/1) ... [2025-02-06 00:48:00,670 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:48:00" (1/1) ... [2025-02-06 00:48:00,702 INFO L138 Inliner]: procedures = 26, calls = 50, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 282 [2025-02-06 00:48:00,703 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 00:48:00,704 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 00:48:00,704 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 00:48:00,704 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 00:48:00,710 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:48:00" (1/1) ... [2025-02-06 00:48:00,710 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:48:00" (1/1) ... [2025-02-06 00:48:00,719 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:48:00" (1/1) ... [2025-02-06 00:48:00,743 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 00:48:00,748 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:48:00" (1/1) ... [2025-02-06 00:48:00,748 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:48:00" (1/1) ... [2025-02-06 00:48:00,764 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:48:00" (1/1) ... [2025-02-06 00:48:00,767 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:48:00" (1/1) ... [2025-02-06 00:48:00,774 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:48:00" (1/1) ... [2025-02-06 00:48:00,776 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:48:00" (1/1) ... [2025-02-06 00:48:00,784 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 00:48:00,786 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 00:48:00,786 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 00:48:00,786 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 00:48:00,787 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:48:00" (1/1) ... [2025-02-06 00:48:00,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 00:48:00,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 00:48:00,815 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 00:48:00,819 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 00:48:00,835 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 00:48:00,835 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-02-06 00:48:00,835 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-02-06 00:48:00,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 00:48:00,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 00:48:00,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 00:48:00,894 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 00:48:00,896 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 00:48:01,352 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L212: havoc property_#t~bitwise28#1;havoc property_#t~short29#1;havoc property_#t~bitwise30#1;havoc property_#t~short31#1;havoc property_#t~short32#1; [2025-02-06 00:48:01,413 INFO L? ?]: Removed 42 outVars from TransFormulas that were not future-live. [2025-02-06 00:48:01,413 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 00:48:01,428 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 00:48:01,428 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 00:48:01,429 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 12:48:01 BoogieIcfgContainer [2025-02-06 00:48:01,429 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 00:48:01,431 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 00:48:01,431 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 00:48:01,435 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 00:48:01,435 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 12:48:00" (1/3) ... [2025-02-06 00:48:01,435 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@111de46a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 12:48:01, skipping insertion in model container [2025-02-06 00:48:01,436 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:48:00" (2/3) ... [2025-02-06 00:48:01,436 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@111de46a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 12:48:01, skipping insertion in model container [2025-02-06 00:48:01,436 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 12:48:01" (3/3) ... [2025-02-06 00:48:01,437 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_100-1loop_file-50.i [2025-02-06 00:48:01,448 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 00:48:01,449 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_loopvsstraightlinecode_100-1loop_file-50.i that has 2 procedures, 124 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-02-06 00:48:01,490 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 00:48:01,499 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;@1ffef201, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 00:48:01,500 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-06 00:48:01,503 INFO L276 IsEmpty]: Start isEmpty. Operand has 124 states, 84 states have (on average 1.380952380952381) internal successors, (116), 85 states have internal predecessors, (116), 37 states have call successors, (37), 1 states have call predecessors, (37), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2025-02-06 00:48:01,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2025-02-06 00:48:01,514 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 00:48:01,515 INFO L218 NwaCegarLoop]: trace histogram [37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:48:01,516 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 00:48:01,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 00:48:01,520 INFO L85 PathProgramCache]: Analyzing trace with hash 149432660, now seen corresponding path program 1 times [2025-02-06 00:48:01,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 00:48:01,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456761311] [2025-02-06 00:48:01,527 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 00:48:01,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 00:48:01,609 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 243 statements into 1 equivalence classes. [2025-02-06 00:48:01,650 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 243 of 243 statements. [2025-02-06 00:48:01,651 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 00:48:01,653 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 00:48:01,912 INFO L134 CoverageAnalysis]: Checked inductivity of 2664 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 2592 trivial. 0 not checked. [2025-02-06 00:48:01,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 00:48:01,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456761311] [2025-02-06 00:48:01,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456761311] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 00:48:01,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886826106] [2025-02-06 00:48:01,917 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 00:48:01,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 00:48:01,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 00:48:01,921 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 00:48:01,927 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 00:48:02,011 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 243 statements into 1 equivalence classes. [2025-02-06 00:48:02,091 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 243 of 243 statements. [2025-02-06 00:48:02,092 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 00:48:02,092 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 00:48:02,095 INFO L256 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-02-06 00:48:02,103 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 00:48:02,135 INFO L134 CoverageAnalysis]: Checked inductivity of 2664 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 2592 trivial. 0 not checked. [2025-02-06 00:48:02,135 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 00:48:02,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [886826106] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 00:48:02,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 00:48:02,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-02-06 00:48:02,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539236109] [2025-02-06 00:48:02,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 00:48:02,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-06 00:48:02,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 00:48:02,181 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-06 00:48:02,182 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-06 00:48:02,184 INFO L87 Difference]: Start difference. First operand has 124 states, 84 states have (on average 1.380952380952381) internal successors, (116), 85 states have internal predecessors, (116), 37 states have call successors, (37), 1 states have call predecessors, (37), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) Second operand has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (37), 1 states have call predecessors, (37), 2 states have call successors, (37) [2025-02-06 00:48:02,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 00:48:02,223 INFO L93 Difference]: Finished difference Result 245 states and 414 transitions. [2025-02-06 00:48:02,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-06 00:48:02,225 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (37), 1 states have call predecessors, (37), 2 states have call successors, (37) Word has length 243 [2025-02-06 00:48:02,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 00:48:02,231 INFO L225 Difference]: With dead ends: 245 [2025-02-06 00:48:02,231 INFO L226 Difference]: Without dead ends: 121 [2025-02-06 00:48:02,234 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 244 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 00:48:02,236 INFO L435 NwaCegarLoop]: 184 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 00:48:02,239 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 184 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 00:48:02,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2025-02-06 00:48:02,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2025-02-06 00:48:02,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 82 states have (on average 1.353658536585366) internal successors, (111), 82 states have internal predecessors, (111), 37 states have call successors, (37), 1 states have call predecessors, (37), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2025-02-06 00:48:02,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 185 transitions. [2025-02-06 00:48:02,281 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 185 transitions. Word has length 243 [2025-02-06 00:48:02,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 00:48:02,281 INFO L471 AbstractCegarLoop]: Abstraction has 121 states and 185 transitions. [2025-02-06 00:48:02,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (37), 1 states have call predecessors, (37), 2 states have call successors, (37) [2025-02-06 00:48:02,282 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 185 transitions. [2025-02-06 00:48:02,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2025-02-06 00:48:02,285 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 00:48:02,285 INFO L218 NwaCegarLoop]: trace histogram [37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:48:02,295 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 00:48:02,486 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 00:48:02,487 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 00:48:02,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 00:48:02,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1543092903, now seen corresponding path program 1 times [2025-02-06 00:48:02,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 00:48:02,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226426951] [2025-02-06 00:48:02,488 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 00:48:02,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 00:48:02,515 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 243 statements into 1 equivalence classes. [2025-02-06 00:48:02,719 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 243 of 243 statements. [2025-02-06 00:48:02,720 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 00:48:02,720 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 00:48:03,301 INFO L134 CoverageAnalysis]: Checked inductivity of 2664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2025-02-06 00:48:03,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 00:48:03,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226426951] [2025-02-06 00:48:03,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226426951] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 00:48:03,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 00:48:03,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 00:48:03,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731114673] [2025-02-06 00:48:03,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 00:48:03,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 00:48:03,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 00:48:03,304 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 00:48:03,304 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 00:48:03,304 INFO L87 Difference]: Start difference. First operand 121 states and 185 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 1 states have call successors, (37), 1 states have call predecessors, (37), 1 states have return successors, (37), 1 states have call predecessors, (37), 1 states have call successors, (37) [2025-02-06 00:48:03,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 00:48:03,513 INFO L93 Difference]: Finished difference Result 239 states and 367 transitions. [2025-02-06 00:48:03,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 00:48:03,513 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 1 states have call successors, (37), 1 states have call predecessors, (37), 1 states have return successors, (37), 1 states have call predecessors, (37), 1 states have call successors, (37) Word has length 243 [2025-02-06 00:48:03,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 00:48:03,516 INFO L225 Difference]: With dead ends: 239 [2025-02-06 00:48:03,517 INFO L226 Difference]: Without dead ends: 121 [2025-02-06 00:48:03,518 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 00:48:03,520 INFO L435 NwaCegarLoop]: 168 mSDtfsCounter, 185 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 00:48:03,520 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 168 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 00:48:03,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2025-02-06 00:48:03,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2025-02-06 00:48:03,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 82 states have (on average 1.3048780487804879) internal successors, (107), 82 states have internal predecessors, (107), 37 states have call successors, (37), 1 states have call predecessors, (37), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2025-02-06 00:48:03,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 181 transitions. [2025-02-06 00:48:03,534 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 181 transitions. Word has length 243 [2025-02-06 00:48:03,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 00:48:03,535 INFO L471 AbstractCegarLoop]: Abstraction has 121 states and 181 transitions. [2025-02-06 00:48:03,535 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 1 states have call successors, (37), 1 states have call predecessors, (37), 1 states have return successors, (37), 1 states have call predecessors, (37), 1 states have call successors, (37) [2025-02-06 00:48:03,536 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 181 transitions. [2025-02-06 00:48:03,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2025-02-06 00:48:03,539 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 00:48:03,539 INFO L218 NwaCegarLoop]: trace histogram [37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:48:03,539 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 00:48:03,539 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 00:48:03,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 00:48:03,542 INFO L85 PathProgramCache]: Analyzing trace with hash 955736057, now seen corresponding path program 1 times [2025-02-06 00:48:03,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 00:48:03,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576446587] [2025-02-06 00:48:03,542 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 00:48:03,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 00:48:03,567 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 243 statements into 1 equivalence classes. [2025-02-06 00:48:03,703 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 243 of 243 statements. [2025-02-06 00:48:03,703 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 00:48:03,703 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 00:48:04,249 INFO L134 CoverageAnalysis]: Checked inductivity of 2664 backedges. 9 proven. 99 refuted. 0 times theorem prover too weak. 2556 trivial. 0 not checked. [2025-02-06 00:48:04,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 00:48:04,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576446587] [2025-02-06 00:48:04,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576446587] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 00:48:04,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1911973739] [2025-02-06 00:48:04,250 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 00:48:04,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 00:48:04,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 00:48:04,252 INFO L229 MonitoredProcess]: Starting monitored process 3 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 00:48:04,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-06 00:48:04,312 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 243 statements into 1 equivalence classes. [2025-02-06 00:48:04,365 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 243 of 243 statements. [2025-02-06 00:48:04,365 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 00:48:04,366 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 00:48:04,368 INFO L256 TraceCheckSpWp]: Trace formula consists of 539 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 00:48:04,372 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 00:48:04,721 INFO L134 CoverageAnalysis]: Checked inductivity of 2664 backedges. 438 proven. 99 refuted. 0 times theorem prover too weak. 2127 trivial. 0 not checked. [2025-02-06 00:48:04,721 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 00:48:05,002 INFO L134 CoverageAnalysis]: Checked inductivity of 2664 backedges. 9 proven. 99 refuted. 0 times theorem prover too weak. 2556 trivial. 0 not checked. [2025-02-06 00:48:05,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1911973739] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 00:48:05,002 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 00:48:05,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2025-02-06 00:48:05,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375251026] [2025-02-06 00:48:05,003 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 00:48:05,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-06 00:48:05,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 00:48:05,005 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-06 00:48:05,005 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2025-02-06 00:48:05,005 INFO L87 Difference]: Start difference. First operand 121 states and 181 transitions. Second operand has 14 states, 14 states have (on average 7.642857142857143) internal successors, (107), 14 states have internal predecessors, (107), 3 states have call successors, (103), 2 states have call predecessors, (103), 4 states have return successors, (104), 3 states have call predecessors, (104), 3 states have call successors, (104) [2025-02-06 00:48:05,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 00:48:05,359 INFO L93 Difference]: Finished difference Result 247 states and 367 transitions. [2025-02-06 00:48:05,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-06 00:48:05,360 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.642857142857143) internal successors, (107), 14 states have internal predecessors, (107), 3 states have call successors, (103), 2 states have call predecessors, (103), 4 states have return successors, (104), 3 states have call predecessors, (104), 3 states have call successors, (104) Word has length 243 [2025-02-06 00:48:05,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 00:48:05,361 INFO L225 Difference]: With dead ends: 247 [2025-02-06 00:48:05,361 INFO L226 Difference]: Without dead ends: 129 [2025-02-06 00:48:05,365 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 499 GetRequests, 482 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2025-02-06 00:48:05,366 INFO L435 NwaCegarLoop]: 120 mSDtfsCounter, 144 mSDsluCounter, 598 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 718 SdHoareTripleChecker+Invalid, 564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-06 00:48:05,366 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 718 Invalid, 564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 550 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-06 00:48:05,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2025-02-06 00:48:05,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 125. [2025-02-06 00:48:05,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 85 states have (on average 1.2823529411764707) internal successors, (109), 85 states have internal predecessors, (109), 37 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2025-02-06 00:48:05,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 183 transitions. [2025-02-06 00:48:05,382 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 183 transitions. Word has length 243 [2025-02-06 00:48:05,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 00:48:05,383 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 183 transitions. [2025-02-06 00:48:05,383 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.642857142857143) internal successors, (107), 14 states have internal predecessors, (107), 3 states have call successors, (103), 2 states have call predecessors, (103), 4 states have return successors, (104), 3 states have call predecessors, (104), 3 states have call successors, (104) [2025-02-06 00:48:05,383 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 183 transitions. [2025-02-06 00:48:05,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2025-02-06 00:48:05,385 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 00:48:05,385 INFO L218 NwaCegarLoop]: trace histogram [37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:48:05,392 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-06 00:48:05,585 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 00:48:05,586 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 00:48:05,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 00:48:05,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1025510278, now seen corresponding path program 1 times [2025-02-06 00:48:05,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 00:48:05,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511822937] [2025-02-06 00:48:05,587 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 00:48:05,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 00:48:05,601 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 244 statements into 1 equivalence classes. [2025-02-06 00:48:05,801 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 244 of 244 statements. [2025-02-06 00:48:05,801 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 00:48:05,801 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-06 00:48:05,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [16526289] [2025-02-06 00:48:05,804 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 00:48:05,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 00:48:05,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 00:48:05,806 INFO L229 MonitoredProcess]: Starting monitored process 4 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 00:48:05,809 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-06 00:48:05,872 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 244 statements into 1 equivalence classes. [2025-02-06 00:48:05,933 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 244 of 244 statements. [2025-02-06 00:48:05,933 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 00:48:05,933 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 00:48:05,935 INFO L256 TraceCheckSpWp]: Trace formula consists of 539 conjuncts, 33 conjuncts are in the unsatisfiable core [2025-02-06 00:48:05,940 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 00:48:11,590 INFO L134 CoverageAnalysis]: Checked inductivity of 2664 backedges. 1368 proven. 309 refuted. 0 times theorem prover too weak. 987 trivial. 0 not checked. [2025-02-06 00:48:11,590 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 00:49:37,834 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse4 (mod c_~var_1_20~0 256))) (let ((.cse0 (mod c_~var_1_8~0 65536)) (.cse1 (+ (mod c_~var_1_11~0 65536) 1)) (.cse2 (mod c_~var_1_19~0 256)) (.cse3 (+ .cse4 1))) (and (or (and (forall ((v_z_18 Int)) (or (< (+ v_z_18 .cse0) .cse1) (< (div .cse2 v_z_18) .cse3))) (forall ((v_z_21 Int)) (or (< (+ v_z_21 .cse0) .cse1) (< 0 (+ .cse4 (div .cse2 v_z_21) 1))))) (< .cse4 .cse2)) (or (and (forall ((v_z_25 Int)) (or (< 0 (+ .cse2 1 (div .cse2 v_z_25))) (< (+ v_z_25 .cse0) .cse1))) (forall ((v_z_23 Int)) (or (< (div .cse2 v_z_23) (+ .cse2 1)) (< (+ v_z_23 .cse0) .cse1)))) (< .cse2 .cse3))))) is different from false [2025-02-06 00:49:37,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 00:49:37,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511822937] [2025-02-06 00:49:37,955 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-06 00:49:37,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16526289] [2025-02-06 00:49:37,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [16526289] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 00:49:37,955 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-02-06 00:49:37,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2025-02-06 00:49:37,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433619732] [2025-02-06 00:49:37,956 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-02-06 00:49:37,957 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-02-06 00:49:37,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 00:49:37,957 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-02-06 00:49:37,958 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=402, Unknown=22, NotChecked=42, Total=552 [2025-02-06 00:49:37,958 INFO L87 Difference]: Start difference. First operand 125 states and 183 transitions. Second operand has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 5 states have call successors, (37), 5 states have call predecessors, (37), 9 states have return successors, (37), 5 states have call predecessors, (37), 5 states have call successors, (37)