./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-6.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-6.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/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 c1b5c482da5d2c6667d34018776f68ea028be3d534a2149af7f706efb36af7e7 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 04:41:58,590 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 04:41:58,663 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-17 04:41:58,671 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 04:41:58,672 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 04:41:58,698 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 04:41:58,699 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 04:41:58,700 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 04:41:58,700 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 04:41:58,700 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 04:41:58,701 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 04:41:58,701 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 04:41:58,702 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 04:41:58,702 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 04:41:58,702 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 04:41:58,702 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 04:41:58,702 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 04:41:58,702 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 04:41:58,702 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 04:41:58,703 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 04:41:58,703 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 04:41:58,703 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 04:41:58,703 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 04:41:58,703 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 04:41:58,703 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 04:41:58,703 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 04:41:58,703 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 04:41:58,703 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 04:41:58,704 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 04:41:58,704 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 04:41:58,704 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 04:41:58,704 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 04:41:58,704 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 04:41:58,704 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 04:41:58,704 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 04:41:58,704 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 04:41:58,704 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 04:41:58,704 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 04:41:58,704 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 04:41:58,704 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 04:41:58,704 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 04:41:58,704 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 04:41:58,705 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 04:41:58,705 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/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 -> c1b5c482da5d2c6667d34018776f68ea028be3d534a2149af7f706efb36af7e7 [2025-03-17 04:41:58,985 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 04:41:58,992 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 04:41:58,996 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 04:41:58,997 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 04:41:58,997 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 04:41:58,998 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-6.i [2025-03-17 04:42:00,236 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0ce586bc/df3527a1ea274722b97c72903919bda9/FLAG4b76bf177 [2025-03-17 04:42:00,460 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 04:42:00,461 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-6.i [2025-03-17 04:42:00,468 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0ce586bc/df3527a1ea274722b97c72903919bda9/FLAG4b76bf177 [2025-03-17 04:42:00,796 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0ce586bc/df3527a1ea274722b97c72903919bda9 [2025-03-17 04:42:00,797 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 04:42:00,799 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 04:42:00,800 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 04:42:00,800 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 04:42:00,803 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 04:42:00,804 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 04:42:00" (1/1) ... [2025-03-17 04:42:00,805 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13491ea3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:42:00, skipping insertion in model container [2025-03-17 04:42:00,805 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 04:42:00" (1/1) ... [2025-03-17 04:42:00,819 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 04:42:00,914 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-6.i[914,927] [2025-03-17 04:42:00,956 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 04:42:00,966 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 04:42:00,975 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-6.i[914,927] [2025-03-17 04:42:00,996 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 04:42:01,014 INFO L204 MainTranslator]: Completed translation [2025-03-17 04:42:01,015 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:42:01 WrapperNode [2025-03-17 04:42:01,015 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 04:42:01,016 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 04:42:01,016 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 04:42:01,016 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 04:42:01,021 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:42:01" (1/1) ... [2025-03-17 04:42:01,028 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:42:01" (1/1) ... [2025-03-17 04:42:01,055 INFO L138 Inliner]: procedures = 26, calls = 32, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 116 [2025-03-17 04:42:01,059 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 04:42:01,059 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 04:42:01,059 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 04:42:01,059 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 04:42:01,069 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:42:01" (1/1) ... [2025-03-17 04:42:01,069 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:42:01" (1/1) ... [2025-03-17 04:42:01,071 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:42:01" (1/1) ... [2025-03-17 04:42:01,085 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]. [2025-03-17 04:42:01,086 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:42:01" (1/1) ... [2025-03-17 04:42:01,088 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:42:01" (1/1) ... [2025-03-17 04:42:01,092 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:42:01" (1/1) ... [2025-03-17 04:42:01,096 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:42:01" (1/1) ... [2025-03-17 04:42:01,097 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:42:01" (1/1) ... [2025-03-17 04:42:01,098 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:42:01" (1/1) ... [2025-03-17 04:42:01,099 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 04:42:01,103 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 04:42:01,103 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 04:42:01,104 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 04:42:01,104 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:42:01" (1/1) ... [2025-03-17 04:42:01,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 04:42:01,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 04:42:01,129 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-17 04:42:01,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-17 04:42:01,149 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 04:42:01,150 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-17 04:42:01,150 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-17 04:42:01,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 04:42:01,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 04:42:01,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 04:42:01,208 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 04:42:01,210 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 04:42:01,422 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2025-03-17 04:42:01,423 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 04:42:01,432 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 04:42:01,433 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 04:42:01,433 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 04:42:01 BoogieIcfgContainer [2025-03-17 04:42:01,433 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 04:42:01,435 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 04:42:01,435 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 04:42:01,438 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 04:42:01,439 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 04:42:00" (1/3) ... [2025-03-17 04:42:01,439 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fe79e72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 04:42:01, skipping insertion in model container [2025-03-17 04:42:01,439 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:42:01" (2/3) ... [2025-03-17 04:42:01,439 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fe79e72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 04:42:01, skipping insertion in model container [2025-03-17 04:42:01,439 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 04:42:01" (3/3) ... [2025-03-17 04:42:01,440 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount25_file-6.i [2025-03-17 04:42:01,455 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 04:42:01,456 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_operatoramount_amount25_file-6.i that has 2 procedures, 48 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-17 04:42:01,508 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 04:42:01,519 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;@380264bf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 04:42:01,519 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-17 04:42:01,523 INFO L276 IsEmpty]: Start isEmpty. Operand has 48 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 27 states have internal predecessors, (36), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2025-03-17 04:42:01,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2025-03-17 04:42:01,531 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:42:01,532 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 04:42:01,532 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:42:01,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:42:01,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1358220607, now seen corresponding path program 1 times [2025-03-17 04:42:01,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:42:01,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460572282] [2025-03-17 04:42:01,543 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:42:01,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:42:01,617 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 114 statements into 1 equivalence classes. [2025-03-17 04:42:01,632 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 114 of 114 statements. [2025-03-17 04:42:01,632 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:42:01,632 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:42:01,770 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked. [2025-03-17 04:42:01,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:42:01,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460572282] [2025-03-17 04:42:01,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460572282] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 04:42:01,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2114543717] [2025-03-17 04:42:01,772 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:42:01,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 04:42:01,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 04:42:01,777 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 04:42:01,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-17 04:42:01,845 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 114 statements into 1 equivalence classes. [2025-03-17 04:42:01,902 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 114 of 114 statements. [2025-03-17 04:42:01,903 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:42:01,903 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:42:01,905 INFO L256 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-17 04:42:01,910 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 04:42:01,940 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked. [2025-03-17 04:42:01,940 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 04:42:01,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2114543717] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 04:42:01,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 04:42:01,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-17 04:42:01,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275040476] [2025-03-17 04:42:01,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 04:42:01,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-17 04:42:01,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:42:01,965 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-17 04:42:01,965 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 04:42:01,967 INFO L87 Difference]: Start difference. First operand has 48 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 27 states have internal predecessors, (36), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2025-03-17 04:42:01,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:42:02,000 INFO L93 Difference]: Finished difference Result 93 states and 165 transitions. [2025-03-17 04:42:02,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-17 04:42:02,003 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) Word has length 114 [2025-03-17 04:42:02,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:42:02,008 INFO L225 Difference]: With dead ends: 93 [2025-03-17 04:42:02,008 INFO L226 Difference]: Without dead ends: 46 [2025-03-17 04:42:02,011 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 04:42:02,013 INFO L435 NwaCegarLoop]: 70 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 04:42:02,015 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 04:42:02,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2025-03-17 04:42:02,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2025-03-17 04:42:02,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 25 states have (on average 1.28) internal successors, (32), 25 states have internal predecessors, (32), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2025-03-17 04:42:02,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 70 transitions. [2025-03-17 04:42:02,052 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 70 transitions. Word has length 114 [2025-03-17 04:42:02,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:42:02,053 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 70 transitions. [2025-03-17 04:42:02,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2025-03-17 04:42:02,053 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 70 transitions. [2025-03-17 04:42:02,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2025-03-17 04:42:02,055 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:42:02,055 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 04:42:02,064 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-17 04:42:02,256 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-03-17 04:42:02,257 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:42:02,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:42:02,257 INFO L85 PathProgramCache]: Analyzing trace with hash 53979936, now seen corresponding path program 1 times [2025-03-17 04:42:02,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:42:02,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962198504] [2025-03-17 04:42:02,257 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:42:02,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:42:02,274 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 114 statements into 1 equivalence classes. [2025-03-17 04:42:02,396 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 114 of 114 statements. [2025-03-17 04:42:02,398 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:42:02,398 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:42:12,923 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2025-03-17 04:42:12,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:42:12,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962198504] [2025-03-17 04:42:12,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962198504] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 04:42:12,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 04:42:12,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-03-17 04:42:12,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211575837] [2025-03-17 04:42:12,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 04:42:12,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 04:42:12,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:42:12,925 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 04:42:12,925 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2025-03-17 04:42:12,925 INFO L87 Difference]: Start difference. First operand 46 states and 70 transitions. Second operand has 11 states, 10 states have (on average 2.2) internal successors, (22), 11 states have internal predecessors, (22), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2025-03-17 04:42:21,889 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2025-03-17 04:42:25,900 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2025-03-17 04:42:31,521 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2025-03-17 04:42:34,554 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.03s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2025-03-17 04:42:36,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:42:36,879 INFO L93 Difference]: Finished difference Result 136 states and 193 transitions. [2025-03-17 04:42:36,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 04:42:36,880 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.2) internal successors, (22), 11 states have internal predecessors, (22), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 114 [2025-03-17 04:42:36,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:42:36,883 INFO L225 Difference]: With dead ends: 136 [2025-03-17 04:42:36,883 INFO L226 Difference]: Without dead ends: 134 [2025-03-17 04:42:36,883 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=107, Invalid=235, Unknown=0, NotChecked=0, Total=342 [2025-03-17 04:42:36,884 INFO L435 NwaCegarLoop]: 64 mSDtfsCounter, 180 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 97 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.7s IncrementalHoareTripleChecker+Time [2025-03-17 04:42:36,884 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 328 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 227 Invalid, 3 Unknown, 0 Unchecked, 18.7s Time] [2025-03-17 04:42:36,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2025-03-17 04:42:36,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 94. [2025-03-17 04:42:36,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 53 states have (on average 1.320754716981132) internal successors, (70), 53 states have internal predecessors, (70), 38 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2025-03-17 04:42:36,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 146 transitions. [2025-03-17 04:42:36,911 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 146 transitions. Word has length 114 [2025-03-17 04:42:36,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:42:36,911 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 146 transitions. [2025-03-17 04:42:36,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.2) internal successors, (22), 11 states have internal predecessors, (22), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2025-03-17 04:42:36,911 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 146 transitions. [2025-03-17 04:42:36,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2025-03-17 04:42:36,914 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:42:36,914 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 04:42:36,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 04:42:36,915 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:42:36,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:42:36,916 INFO L85 PathProgramCache]: Analyzing trace with hash 54009727, now seen corresponding path program 1 times [2025-03-17 04:42:36,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:42:36,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571900535] [2025-03-17 04:42:36,917 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:42:36,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:42:36,926 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 114 statements into 1 equivalence classes. [2025-03-17 04:42:36,948 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 114 of 114 statements. [2025-03-17 04:42:36,949 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:42:36,949 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:42:45,891 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2025-03-17 04:42:45,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:42:45,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571900535] [2025-03-17 04:42:45,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571900535] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 04:42:45,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 04:42:45,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-17 04:42:45,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229517586] [2025-03-17 04:42:45,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 04:42:45,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-17 04:42:45,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:42:45,894 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-17 04:42:45,894 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2025-03-17 04:42:45,894 INFO L87 Difference]: Start difference. First operand 94 states and 146 transitions. Second operand has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2025-03-17 04:42:49,203 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.39s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2025-03-17 04:42:53,207 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2025-03-17 04:42:54,693 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2025-03-17 04:42:55,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:42:55,727 INFO L93 Difference]: Finished difference Result 131 states and 196 transitions. [2025-03-17 04:42:55,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-17 04:42:55,728 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 114 [2025-03-17 04:42:55,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:42:55,730 INFO L225 Difference]: With dead ends: 131 [2025-03-17 04:42:55,730 INFO L226 Difference]: Without dead ends: 129 [2025-03-17 04:42:55,730 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2025-03-17 04:42:55,731 INFO L435 NwaCegarLoop]: 61 mSDtfsCounter, 51 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2025-03-17 04:42:55,731 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 228 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 76 Invalid, 1 Unknown, 0 Unchecked, 9.0s Time] [2025-03-17 04:42:55,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2025-03-17 04:42:55,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 51. [2025-03-17 04:42:55,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 30 states have (on average 1.3333333333333333) internal successors, (40), 30 states have internal predecessors, (40), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2025-03-17 04:42:55,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 78 transitions. [2025-03-17 04:42:55,740 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 78 transitions. Word has length 114 [2025-03-17 04:42:55,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:42:55,740 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 78 transitions. [2025-03-17 04:42:55,740 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2025-03-17 04:42:55,740 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 78 transitions. [2025-03-17 04:42:55,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2025-03-17 04:42:55,741 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:42:55,741 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 04:42:55,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 04:42:55,741 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:42:55,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:42:55,742 INFO L85 PathProgramCache]: Analyzing trace with hash 54903457, now seen corresponding path program 1 times [2025-03-17 04:42:55,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:42:55,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672135632] [2025-03-17 04:42:55,742 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:42:55,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:42:55,752 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 114 statements into 1 equivalence classes. [2025-03-17 04:42:55,787 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 114 of 114 statements. [2025-03-17 04:42:55,787 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:42:55,787 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:43:05,250 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2025-03-17 04:43:05,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:43:05,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672135632] [2025-03-17 04:43:05,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672135632] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 04:43:05,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 04:43:05,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-03-17 04:43:05,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845635704] [2025-03-17 04:43:05,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 04:43:05,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 04:43:05,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:43:05,252 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 04:43:05,252 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2025-03-17 04:43:05,252 INFO L87 Difference]: Start difference. First operand 51 states and 78 transitions. Second operand has 11 states, 10 states have (on average 2.2) internal successors, (22), 11 states have internal predecessors, (22), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2025-03-17 04:43:19,974 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2025-03-17 04:43:23,979 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2025-03-17 04:43:29,045 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2025-03-17 04:43:32,160 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.11s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2025-03-17 04:43:36,811 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2025-03-17 04:43:38,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:43:38,441 INFO L93 Difference]: Finished difference Result 143 states and 203 transitions. [2025-03-17 04:43:38,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-17 04:43:38,442 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.2) internal successors, (22), 11 states have internal predecessors, (22), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 114 [2025-03-17 04:43:38,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:43:38,444 INFO L225 Difference]: With dead ends: 143 [2025-03-17 04:43:38,444 INFO L226 Difference]: Without dead ends: 141 [2025-03-17 04:43:38,444 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=161, Invalid=301, Unknown=0, NotChecked=0, Total=462 [2025-03-17 04:43:38,446 INFO L435 NwaCegarLoop]: 61 mSDtfsCounter, 136 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 97 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.5s IncrementalHoareTripleChecker+Time [2025-03-17 04:43:38,446 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 379 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 339 Invalid, 4 Unknown, 0 Unchecked, 24.5s Time] [2025-03-17 04:43:38,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2025-03-17 04:43:38,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 99. [2025-03-17 04:43:38,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 58 states have (on average 1.3448275862068966) internal successors, (78), 58 states have internal predecessors, (78), 38 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2025-03-17 04:43:38,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 154 transitions. [2025-03-17 04:43:38,470 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 154 transitions. Word has length 114 [2025-03-17 04:43:38,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:43:38,470 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 154 transitions. [2025-03-17 04:43:38,470 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.2) internal successors, (22), 11 states have internal predecessors, (22), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2025-03-17 04:43:38,471 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 154 transitions. [2025-03-17 04:43:38,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2025-03-17 04:43:38,472 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:43:38,472 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 04:43:38,472 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 04:43:38,472 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:43:38,474 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:43:38,474 INFO L85 PathProgramCache]: Analyzing trace with hash 54933248, now seen corresponding path program 1 times [2025-03-17 04:43:38,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:43:38,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917816429] [2025-03-17 04:43:38,474 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:43:38,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:43:38,481 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 114 statements into 1 equivalence classes. [2025-03-17 04:43:38,509 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 114 of 114 statements. [2025-03-17 04:43:38,510 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:43:38,510 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat