./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-57.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-while_file-57.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 f6efe7ecfa2f8653fe2834057cfe06e476c7bb5b1002416a0f080ee317604656 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 01:01:33,335 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 01:01:33,430 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-06 01:01:33,438 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 01:01:33,438 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 01:01:33,472 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 01:01:33,477 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 01:01:33,478 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 01:01:33,478 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 01:01:33,478 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 01:01:33,479 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 01:01:33,479 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 01:01:33,479 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 01:01:33,480 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 01:01:33,480 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 01:01:33,480 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 01:01:33,483 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 01:01:33,483 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 01:01:33,483 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 01:01:33,484 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 01:01:33,484 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 01:01:33,484 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 01:01:33,484 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 01:01:33,484 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 01:01:33,484 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 01:01:33,484 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 01:01:33,484 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 01:01:33,484 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 01:01:33,484 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 01:01:33,484 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 01:01:33,484 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 01:01:33,484 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 01:01:33,484 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 01:01:33,484 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 01:01:33,484 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 01:01:33,484 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 01:01:33,484 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 01:01:33,484 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 01:01:33,484 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 01:01:33,484 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 01:01:33,484 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 01:01:33,484 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 01:01:33,484 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 01:01:33,485 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 -> f6efe7ecfa2f8653fe2834057cfe06e476c7bb5b1002416a0f080ee317604656 [2025-02-06 01:01:33,725 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 01:01:33,731 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 01:01:33,733 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 01:01:33,734 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 01:01:33,734 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 01:01:33,735 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-57.i [2025-02-06 01:01:34,993 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/9a1ffa95b/a619f1cf7fb645bbb2ac9e7ae36a48f9/FLAG427258746 [2025-02-06 01:01:35,282 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 01:01:35,290 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-57.i [2025-02-06 01:01:35,302 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/9a1ffa95b/a619f1cf7fb645bbb2ac9e7ae36a48f9/FLAG427258746 [2025-02-06 01:01:35,313 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/9a1ffa95b/a619f1cf7fb645bbb2ac9e7ae36a48f9 [2025-02-06 01:01:35,315 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 01:01:35,316 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 01:01:35,317 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 01:01:35,317 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 01:01:35,320 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 01:01:35,320 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 01:01:35" (1/1) ... [2025-02-06 01:01:35,321 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32fb96fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:01:35, skipping insertion in model container [2025-02-06 01:01:35,321 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 01:01:35" (1/1) ... [2025-02-06 01:01:35,334 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 01:01:35,430 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-while_file-57.i[916,929] [2025-02-06 01:01:35,497 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 01:01:35,506 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 01:01:35,514 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-while_file-57.i[916,929] [2025-02-06 01:01:35,537 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 01:01:35,549 INFO L204 MainTranslator]: Completed translation [2025-02-06 01:01:35,550 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:01:35 WrapperNode [2025-02-06 01:01:35,550 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 01:01:35,551 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 01:01:35,551 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 01:01:35,551 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 01:01:35,555 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:01:35" (1/1) ... [2025-02-06 01:01:35,566 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:01:35" (1/1) ... [2025-02-06 01:01:35,612 INFO L138 Inliner]: procedures = 26, calls = 49, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 253 [2025-02-06 01:01:35,612 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 01:01:35,613 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 01:01:35,613 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 01:01:35,613 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 01:01:35,619 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:01:35" (1/1) ... [2025-02-06 01:01:35,620 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:01:35" (1/1) ... [2025-02-06 01:01:35,629 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:01:35" (1/1) ... [2025-02-06 01:01:35,654 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 01:01:35,655 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:01:35" (1/1) ... [2025-02-06 01:01:35,655 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:01:35" (1/1) ... [2025-02-06 01:01:35,667 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:01:35" (1/1) ... [2025-02-06 01:01:35,673 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:01:35" (1/1) ... [2025-02-06 01:01:35,678 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:01:35" (1/1) ... [2025-02-06 01:01:35,681 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:01:35" (1/1) ... [2025-02-06 01:01:35,689 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 01:01:35,690 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 01:01:35,690 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 01:01:35,690 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 01:01:35,691 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:01:35" (1/1) ... [2025-02-06 01:01:35,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 01:01:35,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 01:01:35,723 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 01:01:35,727 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 01:01:35,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 01:01:35,743 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-02-06 01:01:35,743 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-02-06 01:01:35,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 01:01:35,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 01:01:35,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 01:01:35,835 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 01:01:35,837 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 01:01:36,243 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L223: havoc property_#t~bitwise25#1;havoc property_#t~short26#1; [2025-02-06 01:01:36,279 INFO L? ?]: Removed 26 outVars from TransFormulas that were not future-live. [2025-02-06 01:01:36,280 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 01:01:36,294 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 01:01:36,297 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 01:01:36,297 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 01:01:36 BoogieIcfgContainer [2025-02-06 01:01:36,297 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 01:01:36,299 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 01:01:36,299 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 01:01:36,303 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 01:01:36,303 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 01:01:35" (1/3) ... [2025-02-06 01:01:36,303 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43dfa3a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 01:01:36, skipping insertion in model container [2025-02-06 01:01:36,303 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:01:35" (2/3) ... [2025-02-06 01:01:36,304 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43dfa3a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 01:01:36, skipping insertion in model container [2025-02-06 01:01:36,304 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 01:01:36" (3/3) ... [2025-02-06 01:01:36,305 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_100-while_file-57.i [2025-02-06 01:01:36,315 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 01:01:36,317 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_loopvsstraightlinecode_100-while_file-57.i that has 2 procedures, 110 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-02-06 01:01:36,353 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 01:01:36,363 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;@7431cc4c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 01:01:36,363 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-06 01:01:36,366 INFO L276 IsEmpty]: Start isEmpty. Operand has 110 states, 71 states have (on average 1.4507042253521127) internal successors, (103), 72 states have internal predecessors, (103), 36 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2025-02-06 01:01:36,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2025-02-06 01:01:36,377 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 01:01:36,378 INFO L218 NwaCegarLoop]: trace histogram [36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:01:36,378 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 01:01:36,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 01:01:36,382 INFO L85 PathProgramCache]: Analyzing trace with hash -681757027, now seen corresponding path program 1 times [2025-02-06 01:01:36,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 01:01:36,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922921835] [2025-02-06 01:01:36,388 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 01:01:36,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 01:01:36,456 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 227 statements into 1 equivalence classes. [2025-02-06 01:01:36,473 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 227 of 227 statements. [2025-02-06 01:01:36,474 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 01:01:36,474 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 01:01:36,712 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2025-02-06 01:01:36,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 01:01:36,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922921835] [2025-02-06 01:01:36,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922921835] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 01:01:36,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [8883834] [2025-02-06 01:01:36,713 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 01:01:36,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 01:01:36,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 01:01:36,723 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 01:01:36,724 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 01:01:36,849 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 227 statements into 1 equivalence classes. [2025-02-06 01:01:36,938 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 227 of 227 statements. [2025-02-06 01:01:36,938 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 01:01:36,938 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 01:01:36,944 INFO L256 TraceCheckSpWp]: Trace formula consists of 520 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-02-06 01:01:36,953 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 01:01:36,984 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2025-02-06 01:01:36,986 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 01:01:36,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [8883834] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 01:01:36,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 01:01:36,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-02-06 01:01:36,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486605997] [2025-02-06 01:01:36,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 01:01:36,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-06 01:01:36,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 01:01:37,005 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-06 01:01:37,005 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-06 01:01:37,008 INFO L87 Difference]: Start difference. First operand has 110 states, 71 states have (on average 1.4507042253521127) internal successors, (103), 72 states have internal predecessors, (103), 36 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) Second operand has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 2 states have call successors, (36) [2025-02-06 01:01:37,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 01:01:37,033 INFO L93 Difference]: Finished difference Result 214 states and 381 transitions. [2025-02-06 01:01:37,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-06 01:01:37,035 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 2 states have call successors, (36) Word has length 227 [2025-02-06 01:01:37,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 01:01:37,040 INFO L225 Difference]: With dead ends: 214 [2025-02-06 01:01:37,040 INFO L226 Difference]: Without dead ends: 107 [2025-02-06 01:01:37,042 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 228 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 01:01:37,044 INFO L435 NwaCegarLoop]: 168 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 01:01:37,044 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 168 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 01:01:37,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2025-02-06 01:01:37,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2025-02-06 01:01:37,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 69 states have (on average 1.4202898550724639) internal successors, (98), 69 states have internal predecessors, (98), 36 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2025-02-06 01:01:37,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 170 transitions. [2025-02-06 01:01:37,084 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 170 transitions. Word has length 227 [2025-02-06 01:01:37,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 01:01:37,084 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 170 transitions. [2025-02-06 01:01:37,085 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 2 states have call successors, (36) [2025-02-06 01:01:37,085 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 170 transitions. [2025-02-06 01:01:37,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2025-02-06 01:01:37,087 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 01:01:37,087 INFO L218 NwaCegarLoop]: trace histogram [36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:01:37,095 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 01:01:37,292 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 01:01:37,292 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 01:01:37,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 01:01:37,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1942150105, now seen corresponding path program 1 times [2025-02-06 01:01:37,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 01:01:37,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069168236] [2025-02-06 01:01:37,295 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 01:01:37,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 01:01:37,331 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 227 statements into 1 equivalence classes. [2025-02-06 01:01:37,685 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 227 of 227 statements. [2025-02-06 01:01:37,686 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 01:01:37,686 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 01:01:53,196 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2025-02-06 01:01:53,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 01:01:53,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069168236] [2025-02-06 01:01:53,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069168236] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 01:01:53,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 01:01:53,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2025-02-06 01:01:53,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997524585] [2025-02-06 01:01:53,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 01:01:53,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-06 01:01:53,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 01:01:53,202 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-06 01:01:53,202 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2025-02-06 01:01:53,203 INFO L87 Difference]: Start difference. First operand 107 states and 170 transitions. Second operand has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 2 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2025-02-06 01:01:56,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 01:01:56,693 INFO L93 Difference]: Finished difference Result 511 states and 804 transitions. [2025-02-06 01:01:56,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-06 01:01:56,694 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 2 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 227 [2025-02-06 01:01:56,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 01:01:56,697 INFO L225 Difference]: With dead ends: 511 [2025-02-06 01:01:56,697 INFO L226 Difference]: Without dead ends: 407 [2025-02-06 01:01:56,701 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=160, Invalid=490, Unknown=0, NotChecked=0, Total=650 [2025-02-06 01:01:56,703 INFO L435 NwaCegarLoop]: 134 mSDtfsCounter, 1027 mSDsluCounter, 816 mSDsCounter, 0 mSdLazyCounter, 1277 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1027 SdHoareTripleChecker+Valid, 950 SdHoareTripleChecker+Invalid, 1390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 1277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2025-02-06 01:01:56,704 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1027 Valid, 950 Invalid, 1390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 1277 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2025-02-06 01:01:56,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2025-02-06 01:01:56,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 192. [2025-02-06 01:01:56,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 117 states have (on average 1.3846153846153846) internal successors, (162), 117 states have internal predecessors, (162), 72 states have call successors, (72), 2 states have call predecessors, (72), 2 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2025-02-06 01:01:56,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 306 transitions. [2025-02-06 01:01:56,746 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 306 transitions. Word has length 227 [2025-02-06 01:01:56,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 01:01:56,747 INFO L471 AbstractCegarLoop]: Abstraction has 192 states and 306 transitions. [2025-02-06 01:01:56,748 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 2 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2025-02-06 01:01:56,748 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 306 transitions. [2025-02-06 01:01:56,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2025-02-06 01:01:56,751 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 01:01:56,751 INFO L218 NwaCegarLoop]: trace histogram [36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:01:56,751 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 01:01:56,752 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 01:01:56,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 01:01:56,752 INFO L85 PathProgramCache]: Analyzing trace with hash 2071232824, now seen corresponding path program 1 times [2025-02-06 01:01:56,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 01:01:56,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348994958] [2025-02-06 01:01:56,752 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 01:01:56,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 01:01:56,765 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 227 statements into 1 equivalence classes. [2025-02-06 01:01:56,856 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 227 of 227 statements. [2025-02-06 01:01:56,857 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 01:01:56,857 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 01:02:46,521 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2025-02-06 01:02:46,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 01:02:46,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348994958] [2025-02-06 01:02:46,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348994958] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 01:02:46,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 01:02:46,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2025-02-06 01:02:46,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815096839] [2025-02-06 01:02:46,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 01:02:46,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-02-06 01:02:46,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 01:02:46,526 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-02-06 01:02:46,527 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2025-02-06 01:02:46,527 INFO L87 Difference]: Start difference. First operand 192 states and 306 transitions. Second operand has 16 states, 16 states have (on average 3.125) internal successors, (50), 16 states have internal predecessors, (50), 3 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2025-02-06 01:02:49,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 01:02:49,090 INFO L93 Difference]: Finished difference Result 517 states and 816 transitions. [2025-02-06 01:02:49,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-02-06 01:02:49,091 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.125) internal successors, (50), 16 states have internal predecessors, (50), 3 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) Word has length 227 [2025-02-06 01:02:49,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 01:02:49,097 INFO L225 Difference]: With dead ends: 517 [2025-02-06 01:02:49,097 INFO L226 Difference]: Without dead ends: 413 [2025-02-06 01:02:49,101 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=212, Invalid=658, Unknown=0, NotChecked=0, Total=870 [2025-02-06 01:02:49,101 INFO L435 NwaCegarLoop]: 136 mSDtfsCounter, 797 mSDsluCounter, 948 mSDsCounter, 0 mSdLazyCounter, 1355 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 797 SdHoareTripleChecker+Valid, 1084 SdHoareTripleChecker+Invalid, 1497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 1355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2025-02-06 01:02:49,101 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [797 Valid, 1084 Invalid, 1497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 1355 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2025-02-06 01:02:49,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2025-02-06 01:02:49,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 192. [2025-02-06 01:02:49,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 117 states have (on average 1.3846153846153846) internal successors, (162), 117 states have internal predecessors, (162), 72 states have call successors, (72), 2 states have call predecessors, (72), 2 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2025-02-06 01:02:49,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 306 transitions. [2025-02-06 01:02:49,139 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 306 transitions. Word has length 227 [2025-02-06 01:02:49,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 01:02:49,143 INFO L471 AbstractCegarLoop]: Abstraction has 192 states and 306 transitions. [2025-02-06 01:02:49,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.125) internal successors, (50), 16 states have internal predecessors, (50), 3 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2025-02-06 01:02:49,143 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 306 transitions. [2025-02-06 01:02:49,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2025-02-06 01:02:49,145 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 01:02:49,145 INFO L218 NwaCegarLoop]: trace histogram [36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:02:49,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 01:02:49,145 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 01:02:49,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 01:02:49,149 INFO L85 PathProgramCache]: Analyzing trace with hash -2129889322, now seen corresponding path program 1 times [2025-02-06 01:02:49,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 01:02:49,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367534457] [2025-02-06 01:02:49,150 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 01:02:49,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 01:02:49,169 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 227 statements into 1 equivalence classes. [2025-02-06 01:02:49,306 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 227 of 227 statements. [2025-02-06 01:02:49,311 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 01:02:49,312 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 01:03:06,845 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2025-02-06 01:03:06,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 01:03:06,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367534457] [2025-02-06 01:03:06,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367534457] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 01:03:06,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 01:03:06,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-02-06 01:03:06,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676110226] [2025-02-06 01:03:06,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 01:03:06,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-06 01:03:06,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 01:03:06,847 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-06 01:03:06,847 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2025-02-06 01:03:06,847 INFO L87 Difference]: Start difference. First operand 192 states and 306 transitions. Second operand has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 1 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) [2025-02-06 01:03:09,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 01:03:09,892 INFO L93 Difference]: Finished difference Result 473 states and 749 transitions. [2025-02-06 01:03:09,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-06 01:03:09,893 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 1 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) Word has length 227 [2025-02-06 01:03:09,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 01:03:09,895 INFO L225 Difference]: With dead ends: 473 [2025-02-06 01:03:09,895 INFO L226 Difference]: Without dead ends: 369 [2025-02-06 01:03:09,896 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=120, Invalid=342, Unknown=0, NotChecked=0, Total=462 [2025-02-06 01:03:09,897 INFO L435 NwaCegarLoop]: 135 mSDtfsCounter, 623 mSDsluCounter, 614 mSDsCounter, 0 mSdLazyCounter, 929 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 623 SdHoareTripleChecker+Valid, 749 SdHoareTripleChecker+Invalid, 1038 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 929 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-02-06 01:03:09,897 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [623 Valid, 749 Invalid, 1038 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 929 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-02-06 01:03:09,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2025-02-06 01:03:09,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 194. [2025-02-06 01:03:09,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 119 states have (on average 1.3949579831932772) internal successors, (166), 119 states have internal predecessors, (166), 72 states have call successors, (72), 2 states have call predecessors, (72), 2 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2025-02-06 01:03:09,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 310 transitions. [2025-02-06 01:03:09,922 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 310 transitions. Word has length 227 [2025-02-06 01:03:09,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 01:03:09,923 INFO L471 AbstractCegarLoop]: Abstraction has 194 states and 310 transitions. [2025-02-06 01:03:09,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 1 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) [2025-02-06 01:03:09,923 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 310 transitions. [2025-02-06 01:03:09,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2025-02-06 01:03:09,925 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 01:03:09,925 INFO L218 NwaCegarLoop]: trace histogram [36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:03:09,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 01:03:09,926 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 01:03:09,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 01:03:09,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1431615928, now seen corresponding path program 1 times [2025-02-06 01:03:09,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 01:03:09,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567220650] [2025-02-06 01:03:09,927 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 01:03:09,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 01:03:09,940 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 227 statements into 1 equivalence classes. [2025-02-06 01:03:10,028 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 227 of 227 statements. [2025-02-06 01:03:10,029 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 01:03:10,029 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat