./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-72.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e2fb8bed 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_amount250_file-72.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 334dc4437eaac80eceb8d1af75e80c429404d34e2c4d4fc214f68fc3c74220fb --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 15:25:56,218 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 15:25:56,264 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 15:25:56,271 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 15:25:56,271 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 15:25:56,294 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 15:25:56,295 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 15:25:56,295 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 15:25:56,295 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 15:25:56,296 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 15:25:56,296 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 15:25:56,296 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 15:25:56,296 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 15:25:56,297 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 15:25:56,297 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 15:25:56,297 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 15:25:56,297 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 15:25:56,297 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 15:25:56,297 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 15:25:56,297 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 15:25:56,297 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 15:25:56,297 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 15:25:56,297 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 15:25:56,298 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 15:25:56,298 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 15:25:56,298 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 15:25:56,298 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 15:25:56,298 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 15:25:56,298 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 15:25:56,298 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 15:25:56,298 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 15:25:56,298 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 15:25:56,299 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 15:25:56,299 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 15:25:56,299 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 15:25:56,299 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 15:25:56,299 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 15:25:56,299 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 15:25:56,299 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 15:25:56,299 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 15:25:56,299 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 15:25:56,299 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 15:25:56,299 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 15:25:56,299 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 -> 334dc4437eaac80eceb8d1af75e80c429404d34e2c4d4fc214f68fc3c74220fb [2025-03-08 15:25:56,539 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 15:25:56,549 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 15:25:56,551 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 15:25:56,552 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 15:25:56,552 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 15:25:56,554 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-72.i [2025-03-08 15:25:57,714 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d57ad9d9/6f1a6375577d467da16ae1f851c1cb9b/FLAG8a66c587d [2025-03-08 15:25:58,083 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 15:25:58,087 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-72.i [2025-03-08 15:25:58,105 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d57ad9d9/6f1a6375577d467da16ae1f851c1cb9b/FLAG8a66c587d [2025-03-08 15:25:58,299 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d57ad9d9/6f1a6375577d467da16ae1f851c1cb9b [2025-03-08 15:25:58,301 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 15:25:58,302 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 15:25:58,303 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 15:25:58,303 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 15:25:58,307 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 15:25:58,308 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 03:25:58" (1/1) ... [2025-03-08 15:25:58,309 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18a92e0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:25:58, skipping insertion in model container [2025-03-08 15:25:58,310 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 03:25:58" (1/1) ... [2025-03-08 15:25:58,330 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 15:25:58,439 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_amount250_file-72.i[916,929] [2025-03-08 15:25:58,583 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 15:25:58,596 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 15:25:58,605 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_amount250_file-72.i[916,929] [2025-03-08 15:25:58,679 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 15:25:58,697 INFO L204 MainTranslator]: Completed translation [2025-03-08 15:25:58,698 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:25:58 WrapperNode [2025-03-08 15:25:58,699 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 15:25:58,700 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 15:25:58,700 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 15:25:58,701 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 15:25:58,705 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:25:58" (1/1) ... [2025-03-08 15:25:58,724 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:25:58" (1/1) ... [2025-03-08 15:25:58,782 INFO L138 Inliner]: procedures = 26, calls = 67, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 462 [2025-03-08 15:25:58,783 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 15:25:58,783 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 15:25:58,784 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 15:25:58,784 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 15:25:58,791 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:25:58" (1/1) ... [2025-03-08 15:25:58,792 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:25:58" (1/1) ... [2025-03-08 15:25:58,802 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:25:58" (1/1) ... [2025-03-08 15:25:58,838 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]. [2025-03-08 15:25:58,838 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:25:58" (1/1) ... [2025-03-08 15:25:58,839 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:25:58" (1/1) ... [2025-03-08 15:25:58,851 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:25:58" (1/1) ... [2025-03-08 15:25:58,853 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:25:58" (1/1) ... [2025-03-08 15:25:58,861 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:25:58" (1/1) ... [2025-03-08 15:25:58,864 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:25:58" (1/1) ... [2025-03-08 15:25:58,871 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 15:25:58,872 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 15:25:58,873 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 15:25:58,873 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 15:25:58,874 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:25:58" (1/1) ... [2025-03-08 15:25:58,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 15:25:58,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 15:25:58,902 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) [2025-03-08 15:25:58,904 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 [2025-03-08 15:25:58,921 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 15:25:58,921 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-08 15:25:58,921 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-08 15:25:58,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 15:25:58,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 15:25:58,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 15:25:58,998 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 15:25:58,999 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 15:25:59,636 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L372: havoc property_#t~ite42#1;havoc property_#t~bitwise41#1;havoc property_#t~short43#1;havoc property_#t~bitwise44#1;havoc property_#t~short45#1;havoc property_#t~ite47#1;havoc property_#t~bitwise46#1;havoc property_#t~short48#1;havoc property_#t~bitwise49#1;havoc property_#t~short50#1; [2025-03-08 15:25:59,698 INFO L? ?]: Removed 43 outVars from TransFormulas that were not future-live. [2025-03-08 15:25:59,699 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 15:25:59,720 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 15:25:59,721 INFO L336 CfgBuilder]: Removed 2 assume(true) statements. [2025-03-08 15:25:59,722 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 03:25:59 BoogieIcfgContainer [2025-03-08 15:25:59,722 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 15:25:59,723 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 15:25:59,724 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 15:25:59,727 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 15:25:59,727 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 03:25:58" (1/3) ... [2025-03-08 15:25:59,727 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b83f2e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 03:25:59, skipping insertion in model container [2025-03-08 15:25:59,727 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:25:58" (2/3) ... [2025-03-08 15:25:59,728 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b83f2e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 03:25:59, skipping insertion in model container [2025-03-08 15:25:59,728 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 03:25:59" (3/3) ... [2025-03-08 15:25:59,728 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-72.i [2025-03-08 15:25:59,738 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 15:25:59,740 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_operatoramount_amount250_file-72.i that has 2 procedures, 190 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-08 15:25:59,785 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 15:25:59,792 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;@69f4e1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 15:25:59,792 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 15:25:59,796 INFO L276 IsEmpty]: Start isEmpty. Operand has 190 states, 133 states have (on average 1.4736842105263157) internal successors, (196), 134 states have internal predecessors, (196), 54 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2025-03-08 15:25:59,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2025-03-08 15:25:59,811 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:25:59,812 INFO L218 NwaCegarLoop]: trace histogram [54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 15:25:59,812 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:25:59,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:25:59,817 INFO L85 PathProgramCache]: Analyzing trace with hash 177445938, now seen corresponding path program 1 times [2025-03-08 15:25:59,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:25:59,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240209345] [2025-03-08 15:25:59,824 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:25:59,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:25:59,938 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 354 statements into 1 equivalence classes. [2025-03-08 15:25:59,970 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 354 of 354 statements. [2025-03-08 15:25:59,970 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:25:59,970 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:26:00,216 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 0 proven. 106 refuted. 0 times theorem prover too weak. 5618 trivial. 0 not checked. [2025-03-08 15:26:00,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:26:00,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240209345] [2025-03-08 15:26:00,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240209345] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 15:26:00,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1774257524] [2025-03-08 15:26:00,217 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:26:00,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:26:00,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 15:26:00,219 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) [2025-03-08 15:26:00,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-08 15:26:00,332 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 354 statements into 1 equivalence classes. [2025-03-08 15:26:00,435 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 354 of 354 statements. [2025-03-08 15:26:00,436 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:26:00,436 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:26:00,440 INFO L256 TraceCheckSpWp]: Trace formula consists of 813 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-08 15:26:00,453 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 15:26:00,509 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 5618 trivial. 0 not checked. [2025-03-08 15:26:00,509 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 15:26:00,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1774257524] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:26:00,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 15:26:00,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-08 15:26:00,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947947061] [2025-03-08 15:26:00,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:26:00,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-08 15:26:00,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:26:00,531 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-08 15:26:00,532 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 15:26:00,533 INFO L87 Difference]: Start difference. First operand has 190 states, 133 states have (on average 1.4736842105263157) internal successors, (196), 134 states have internal predecessors, (196), 54 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) Second operand has 2 states, 2 states have (on average 44.5) internal successors, (89), 2 states have internal predecessors, (89), 2 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (54), 1 states have call predecessors, (54), 2 states have call successors, (54) [2025-03-08 15:26:00,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:26:00,571 INFO L93 Difference]: Finished difference Result 373 states and 655 transitions. [2025-03-08 15:26:00,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-08 15:26:00,573 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 44.5) internal successors, (89), 2 states have internal predecessors, (89), 2 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (54), 1 states have call predecessors, (54), 2 states have call successors, (54) Word has length 354 [2025-03-08 15:26:00,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:26:00,581 INFO L225 Difference]: With dead ends: 373 [2025-03-08 15:26:00,581 INFO L226 Difference]: Without dead ends: 186 [2025-03-08 15:26:00,583 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 355 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 15:26:00,587 INFO L435 NwaCegarLoop]: 288 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 15:26:00,588 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 288 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 15:26:00,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2025-03-08 15:26:00,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2025-03-08 15:26:00,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 130 states have (on average 1.4461538461538461) internal successors, (188), 130 states have internal predecessors, (188), 54 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2025-03-08 15:26:00,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 296 transitions. [2025-03-08 15:26:00,628 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 296 transitions. Word has length 354 [2025-03-08 15:26:00,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:26:00,630 INFO L471 AbstractCegarLoop]: Abstraction has 186 states and 296 transitions. [2025-03-08 15:26:00,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 44.5) internal successors, (89), 2 states have internal predecessors, (89), 2 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (54), 1 states have call predecessors, (54), 2 states have call successors, (54) [2025-03-08 15:26:00,631 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 296 transitions. [2025-03-08 15:26:00,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2025-03-08 15:26:00,635 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:26:00,636 INFO L218 NwaCegarLoop]: trace histogram [54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 15:26:00,643 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-08 15:26:00,836 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 [2025-03-08 15:26:00,837 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:26:00,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:26:00,837 INFO L85 PathProgramCache]: Analyzing trace with hash -755739506, now seen corresponding path program 1 times [2025-03-08 15:26:00,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:26:00,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556945473] [2025-03-08 15:26:00,838 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:26:00,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:26:00,863 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 354 statements into 1 equivalence classes. [2025-03-08 15:26:00,928 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 354 of 354 statements. [2025-03-08 15:26:00,928 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:26:00,929 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:26:01,168 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5724 trivial. 0 not checked. [2025-03-08 15:26:01,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:26:01,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556945473] [2025-03-08 15:26:01,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556945473] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:26:01,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 15:26:01,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 15:26:01,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60223493] [2025-03-08 15:26:01,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:26:01,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 15:26:01,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:26:01,172 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 15:26:01,172 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 15:26:01,173 INFO L87 Difference]: Start difference. First operand 186 states and 296 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 1 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 1 states have call predecessors, (54), 1 states have call successors, (54) [2025-03-08 15:26:01,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:26:01,276 INFO L93 Difference]: Finished difference Result 442 states and 704 transitions. [2025-03-08 15:26:01,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 15:26:01,276 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 1 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 1 states have call predecessors, (54), 1 states have call successors, (54) Word has length 354 [2025-03-08 15:26:01,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:26:01,279 INFO L225 Difference]: With dead ends: 442 [2025-03-08 15:26:01,279 INFO L226 Difference]: Without dead ends: 259 [2025-03-08 15:26:01,283 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 15:26:01,283 INFO L435 NwaCegarLoop]: 346 mSDtfsCounter, 102 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 613 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 15:26:01,285 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 613 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 15:26:01,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2025-03-08 15:26:01,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 213. [2025-03-08 15:26:01,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 157 states have (on average 1.4968152866242037) internal successors, (235), 157 states have internal predecessors, (235), 54 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2025-03-08 15:26:01,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 343 transitions. [2025-03-08 15:26:01,315 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 343 transitions. Word has length 354 [2025-03-08 15:26:01,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:26:01,318 INFO L471 AbstractCegarLoop]: Abstraction has 213 states and 343 transitions. [2025-03-08 15:26:01,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 1 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 1 states have call predecessors, (54), 1 states have call successors, (54) [2025-03-08 15:26:01,318 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 343 transitions. [2025-03-08 15:26:01,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2025-03-08 15:26:01,322 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:26:01,323 INFO L218 NwaCegarLoop]: trace histogram [54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 15:26:01,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 15:26:01,323 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:26:01,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:26:01,324 INFO L85 PathProgramCache]: Analyzing trace with hash 705840493, now seen corresponding path program 1 times [2025-03-08 15:26:01,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:26:01,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221171908] [2025-03-08 15:26:01,325 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:26:01,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:26:01,366 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 354 statements into 1 equivalence classes. [2025-03-08 15:26:01,439 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 354 of 354 statements. [2025-03-08 15:26:01,439 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:26:01,439 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:26:02,431 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5724 trivial. 0 not checked. [2025-03-08 15:26:02,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:26:02,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221171908] [2025-03-08 15:26:02,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221171908] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:26:02,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 15:26:02,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 15:26:02,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862437274] [2025-03-08 15:26:02,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:26:02,432 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 15:26:02,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:26:02,434 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 15:26:02,435 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-08 15:26:02,435 INFO L87 Difference]: Start difference. First operand 213 states and 343 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 1 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 1 states have call predecessors, (54), 1 states have call successors, (54) [2025-03-08 15:26:02,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:26:02,938 INFO L93 Difference]: Finished difference Result 630 states and 1017 transitions. [2025-03-08 15:26:02,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 15:26:02,938 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 1 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 1 states have call predecessors, (54), 1 states have call successors, (54) Word has length 354 [2025-03-08 15:26:02,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:26:02,941 INFO L225 Difference]: With dead ends: 630 [2025-03-08 15:26:02,941 INFO L226 Difference]: Without dead ends: 420 [2025-03-08 15:26:02,942 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2025-03-08 15:26:02,943 INFO L435 NwaCegarLoop]: 270 mSDtfsCounter, 568 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 568 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-08 15:26:02,943 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [568 Valid, 581 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-08 15:26:02,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2025-03-08 15:26:02,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 272. [2025-03-08 15:26:02,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 216 states have (on average 1.5416666666666667) internal successors, (333), 216 states have internal predecessors, (333), 54 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2025-03-08 15:26:02,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 441 transitions. [2025-03-08 15:26:02,978 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 441 transitions. Word has length 354 [2025-03-08 15:26:02,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:26:02,979 INFO L471 AbstractCegarLoop]: Abstraction has 272 states and 441 transitions. [2025-03-08 15:26:02,979 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 1 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 1 states have call predecessors, (54), 1 states have call successors, (54) [2025-03-08 15:26:02,979 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 441 transitions. [2025-03-08 15:26:02,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2025-03-08 15:26:02,983 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:26:02,984 INFO L218 NwaCegarLoop]: trace histogram [54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 15:26:02,984 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 15:26:02,984 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:26:02,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:26:02,985 INFO L85 PathProgramCache]: Analyzing trace with hash 829913740, now seen corresponding path program 1 times [2025-03-08 15:26:02,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:26:02,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313923178] [2025-03-08 15:26:02,985 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:26:02,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:26:03,013 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 354 statements into 1 equivalence classes. [2025-03-08 15:26:03,234 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 354 of 354 statements. [2025-03-08 15:26:03,235 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:26:03,235 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:26:03,773 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5724 trivial. 0 not checked. [2025-03-08 15:26:03,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:26:03,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313923178] [2025-03-08 15:26:03,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313923178] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:26:03,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 15:26:03,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 15:26:03,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740175132] [2025-03-08 15:26:03,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:26:03,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 15:26:03,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:26:03,775 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 15:26:03,775 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-08 15:26:03,775 INFO L87 Difference]: Start difference. First operand 272 states and 441 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 1 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 1 states have call predecessors, (54), 1 states have call successors, (54) [2025-03-08 15:26:04,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:26:04,112 INFO L93 Difference]: Finished difference Result 698 states and 1123 transitions. [2025-03-08 15:26:04,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 15:26:04,112 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 1 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 1 states have call predecessors, (54), 1 states have call successors, (54) Word has length 354 [2025-03-08 15:26:04,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:26:04,115 INFO L225 Difference]: With dead ends: 698 [2025-03-08 15:26:04,116 INFO L226 Difference]: Without dead ends: 429 [2025-03-08 15:26:04,117 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-08 15:26:04,117 INFO L435 NwaCegarLoop]: 299 mSDtfsCounter, 442 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 599 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 15:26:04,117 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [442 Valid, 599 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 15:26:04,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2025-03-08 15:26:04,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 283. [2025-03-08 15:26:04,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 227 states have (on average 1.5374449339207048) internal successors, (349), 227 states have internal predecessors, (349), 54 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2025-03-08 15:26:04,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 457 transitions. [2025-03-08 15:26:04,148 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 457 transitions. Word has length 354 [2025-03-08 15:26:04,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:26:04,149 INFO L471 AbstractCegarLoop]: Abstraction has 283 states and 457 transitions. [2025-03-08 15:26:04,149 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 1 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 1 states have call predecessors, (54), 1 states have call successors, (54) [2025-03-08 15:26:04,149 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 457 transitions. [2025-03-08 15:26:04,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2025-03-08 15:26:04,152 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:26:04,152 INFO L218 NwaCegarLoop]: trace histogram [54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 15:26:04,153 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-08 15:26:04,153 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:26:04,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:26:04,153 INFO L85 PathProgramCache]: Analyzing trace with hash -14558131, now seen corresponding path program 1 times [2025-03-08 15:26:04,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:26:04,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331719859] [2025-03-08 15:26:04,154 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:26:04,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:26:04,180 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 354 statements into 1 equivalence classes. [2025-03-08 15:26:04,356 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 354 of 354 statements. [2025-03-08 15:26:04,356 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:26:04,356 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:26:04,674 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 9 proven. 150 refuted. 0 times theorem prover too weak. 5565 trivial. 0 not checked. [2025-03-08 15:26:04,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:26:04,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331719859] [2025-03-08 15:26:04,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331719859] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 15:26:04,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113226689] [2025-03-08 15:26:04,675 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:26:04,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:26:04,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 15:26:04,677 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 15:26:04,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-08 15:26:04,777 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 354 statements into 1 equivalence classes. [2025-03-08 15:26:04,858 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 354 of 354 statements. [2025-03-08 15:26:04,858 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:26:04,858 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:26:04,864 INFO L256 TraceCheckSpWp]: Trace formula consists of 818 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-08 15:26:04,871 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 15:26:05,716 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 2903 proven. 84 refuted. 0 times theorem prover too weak. 2737 trivial. 0 not checked. [2025-03-08 15:26:05,716 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 15:26:06,082 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 75 proven. 84 refuted. 0 times theorem prover too weak. 5565 trivial. 0 not checked. [2025-03-08 15:26:06,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1113226689] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 15:26:06,083 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 15:26:06,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2025-03-08 15:26:06,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2436030] [2025-03-08 15:26:06,083 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 15:26:06,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-08 15:26:06,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:26:06,085 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-08 15:26:06,087 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2025-03-08 15:26:06,087 INFO L87 Difference]: Start difference. First operand 283 states and 457 transitions. Second operand has 12 states, 12 states have (on average 18.75) internal successors, (225), 12 states have internal predecessors, (225), 5 states have call successors, (158), 3 states have call predecessors, (158), 6 states have return successors, (159), 5 states have call predecessors, (159), 5 states have call successors, (159) [2025-03-08 15:26:07,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:26:07,183 INFO L93 Difference]: Finished difference Result 855 states and 1365 transitions. [2025-03-08 15:26:07,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-03-08 15:26:07,184 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 18.75) internal successors, (225), 12 states have internal predecessors, (225), 5 states have call successors, (158), 3 states have call predecessors, (158), 6 states have return successors, (159), 5 states have call predecessors, (159), 5 states have call successors, (159) Word has length 354 [2025-03-08 15:26:07,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:26:07,187 INFO L225 Difference]: With dead ends: 855 [2025-03-08 15:26:07,189 INFO L226 Difference]: Without dead ends: 575 [2025-03-08 15:26:07,190 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 732 GetRequests, 703 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=247, Invalid=683, Unknown=0, NotChecked=0, Total=930 [2025-03-08 15:26:07,191 INFO L435 NwaCegarLoop]: 192 mSDtfsCounter, 811 mSDsluCounter, 729 mSDsCounter, 0 mSdLazyCounter, 834 mSolverCounterSat, 396 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 815 SdHoareTripleChecker+Valid, 921 SdHoareTripleChecker+Invalid, 1230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 396 IncrementalHoareTripleChecker+Valid, 834 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-03-08 15:26:07,191 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [815 Valid, 921 Invalid, 1230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [396 Valid, 834 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-03-08 15:26:07,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2025-03-08 15:26:07,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 561. [2025-03-08 15:26:07,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 446 states have (on average 1.5022421524663676) internal successors, (670), 446 states have internal predecessors, (670), 108 states have call successors, (108), 6 states have call predecessors, (108), 6 states have return successors, (108), 108 states have call predecessors, (108), 108 states have call successors, (108) [2025-03-08 15:26:07,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 886 transitions. [2025-03-08 15:26:07,237 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 886 transitions. Word has length 354 [2025-03-08 15:26:07,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:26:07,238 INFO L471 AbstractCegarLoop]: Abstraction has 561 states and 886 transitions. [2025-03-08 15:26:07,238 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 18.75) internal successors, (225), 12 states have internal predecessors, (225), 5 states have call successors, (158), 3 states have call predecessors, (158), 6 states have return successors, (159), 5 states have call predecessors, (159), 5 states have call successors, (159) [2025-03-08 15:26:07,238 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 886 transitions. [2025-03-08 15:26:07,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2025-03-08 15:26:07,240 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:26:07,241 INFO L218 NwaCegarLoop]: trace histogram [54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 15:26:07,249 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-08 15:26:07,441 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:26:07,442 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:26:07,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:26:07,442 INFO L85 PathProgramCache]: Analyzing trace with hash -620855668, now seen corresponding path program 1 times [2025-03-08 15:26:07,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:26:07,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447005973] [2025-03-08 15:26:07,442 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:26:07,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:26:07,468 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 354 statements into 1 equivalence classes. [2025-03-08 15:26:07,659 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 354 of 354 statements. [2025-03-08 15:26:07,659 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:26:07,660 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:26:07,991 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 15 proven. 144 refuted. 0 times theorem prover too weak. 5565 trivial. 0 not checked. [2025-03-08 15:26:07,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:26:07,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447005973] [2025-03-08 15:26:07,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447005973] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 15:26:07,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1034346783] [2025-03-08 15:26:07,992 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:26:07,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:26:07,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 15:26:07,994 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 15:26:07,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-08 15:26:08,094 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 354 statements into 1 equivalence classes. [2025-03-08 15:26:08,183 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 354 of 354 statements. [2025-03-08 15:26:08,183 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:26:08,183 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:26:08,188 INFO L256 TraceCheckSpWp]: Trace formula consists of 820 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-08 15:26:08,194 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 15:26:08,693 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 1355 proven. 138 refuted. 0 times theorem prover too weak. 4231 trivial. 0 not checked. [2025-03-08 15:26:08,693 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 15:26:09,125 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 21 proven. 138 refuted. 0 times theorem prover too weak. 5565 trivial. 0 not checked. [2025-03-08 15:26:09,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1034346783] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 15:26:09,125 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 15:26:09,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2025-03-08 15:26:09,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075808821] [2025-03-08 15:26:09,126 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 15:26:09,127 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-08 15:26:09,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:26:09,127 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-08 15:26:09,128 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2025-03-08 15:26:09,128 INFO L87 Difference]: Start difference. First operand 561 states and 886 transitions. Second operand has 10 states, 10 states have (on average 15.5) internal successors, (155), 10 states have internal predecessors, (155), 3 states have call successors, (148), 2 states have call predecessors, (148), 4 states have return successors, (150), 3 states have call predecessors, (150), 3 states have call successors, (150) [2025-03-08 15:26:10,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:26:10,065 INFO L93 Difference]: Finished difference Result 1620 states and 2448 transitions. [2025-03-08 15:26:10,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2025-03-08 15:26:10,066 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 15.5) internal successors, (155), 10 states have internal predecessors, (155), 3 states have call successors, (148), 2 states have call predecessors, (148), 4 states have return successors, (150), 3 states have call predecessors, (150), 3 states have call successors, (150) Word has length 354 [2025-03-08 15:26:10,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:26:10,070 INFO L225 Difference]: With dead ends: 1620 [2025-03-08 15:26:10,070 INFO L226 Difference]: Without dead ends: 1034 [2025-03-08 15:26:10,072 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 741 GetRequests, 706 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=340, Invalid=850, Unknown=0, NotChecked=0, Total=1190 [2025-03-08 15:26:10,073 INFO L435 NwaCegarLoop]: 273 mSDtfsCounter, 816 mSDsluCounter, 772 mSDsCounter, 0 mSdLazyCounter, 744 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 820 SdHoareTripleChecker+Valid, 1045 SdHoareTripleChecker+Invalid, 878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-08 15:26:10,073 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [820 Valid, 1045 Invalid, 878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 744 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-08 15:26:10,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2025-03-08 15:26:10,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 740. [2025-03-08 15:26:10,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 740 states, 615 states have (on average 1.469918699186992) internal successors, (904), 617 states have internal predecessors, (904), 112 states have call successors, (112), 12 states have call predecessors, (112), 12 states have return successors, (112), 110 states have call predecessors, (112), 112 states have call successors, (112) [2025-03-08 15:26:10,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 740 states to 740 states and 1128 transitions. [2025-03-08 15:26:10,138 INFO L78 Accepts]: Start accepts. Automaton has 740 states and 1128 transitions. Word has length 354 [2025-03-08 15:26:10,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:26:10,138 INFO L471 AbstractCegarLoop]: Abstraction has 740 states and 1128 transitions. [2025-03-08 15:26:10,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.5) internal successors, (155), 10 states have internal predecessors, (155), 3 states have call successors, (148), 2 states have call predecessors, (148), 4 states have return successors, (150), 3 states have call predecessors, (150), 3 states have call successors, (150) [2025-03-08 15:26:10,139 INFO L276 IsEmpty]: Start isEmpty. Operand 740 states and 1128 transitions. [2025-03-08 15:26:10,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2025-03-08 15:26:10,143 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:26:10,143 INFO L218 NwaCegarLoop]: trace histogram [54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 15:26:10,151 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-08 15:26:10,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:26:10,344 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:26:10,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:26:10,345 INFO L85 PathProgramCache]: Analyzing trace with hash 974708750, now seen corresponding path program 1 times [2025-03-08 15:26:10,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:26:10,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033563718] [2025-03-08 15:26:10,346 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:26:10,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:26:10,366 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 354 statements into 1 equivalence classes. [2025-03-08 15:26:10,585 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 354 of 354 statements. [2025-03-08 15:26:10,585 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:26:10,585 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:26:11,166 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 81 proven. 78 refuted. 0 times theorem prover too weak. 5565 trivial. 0 not checked. [2025-03-08 15:26:11,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:26:11,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033563718] [2025-03-08 15:26:11,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033563718] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 15:26:11,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [533477925] [2025-03-08 15:26:11,166 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:26:11,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:26:11,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 15:26:11,168 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 15:26:11,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-08 15:26:11,271 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 354 statements into 1 equivalence classes. [2025-03-08 15:26:11,362 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 354 of 354 statements. [2025-03-08 15:26:11,363 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:26:11,363 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:26:11,366 INFO L256 TraceCheckSpWp]: Trace formula consists of 824 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-03-08 15:26:11,370 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 15:26:11,973 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 2933 proven. 162 refuted. 0 times theorem prover too weak. 2629 trivial. 0 not checked. [2025-03-08 15:26:11,973 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 15:26:12,259 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 75 proven. 84 refuted. 0 times theorem prover too weak. 5565 trivial. 0 not checked. [2025-03-08 15:26:12,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [533477925] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 15:26:12,260 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 15:26:12,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 7] total 18 [2025-03-08 15:26:12,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795175903] [2025-03-08 15:26:12,260 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 15:26:12,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-03-08 15:26:12,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:26:12,262 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-03-08 15:26:12,263 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2025-03-08 15:26:12,263 INFO L87 Difference]: Start difference. First operand 740 states and 1128 transitions. Second operand has 18 states, 18 states have (on average 8.0) internal successors, (144), 17 states have internal predecessors, (144), 5 states have call successors, (110), 3 states have call predecessors, (110), 5 states have return successors, (112), 5 states have call predecessors, (112), 5 states have call successors, (112) [2025-03-08 15:26:13,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:26:13,290 INFO L93 Difference]: Finished difference Result 1514 states and 2289 transitions. [2025-03-08 15:26:13,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-03-08 15:26:13,291 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 8.0) internal successors, (144), 17 states have internal predecessors, (144), 5 states have call successors, (110), 3 states have call predecessors, (110), 5 states have return successors, (112), 5 states have call predecessors, (112), 5 states have call successors, (112) Word has length 354 [2025-03-08 15:26:13,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:26:13,298 INFO L225 Difference]: With dead ends: 1514 [2025-03-08 15:26:13,299 INFO L226 Difference]: Without dead ends: 777 [2025-03-08 15:26:13,301 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 726 GetRequests, 699 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=171, Invalid=531, Unknown=0, NotChecked=0, Total=702 [2025-03-08 15:26:13,303 INFO L435 NwaCegarLoop]: 187 mSDtfsCounter, 311 mSDsluCounter, 1546 mSDsCounter, 0 mSdLazyCounter, 1378 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 1733 SdHoareTripleChecker+Invalid, 1448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-03-08 15:26:13,303 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 1733 Invalid, 1448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1378 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-03-08 15:26:13,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2025-03-08 15:26:13,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 749. [2025-03-08 15:26:13,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 749 states, 620 states have (on average 1.4532258064516128) internal successors, (901), 622 states have internal predecessors, (901), 112 states have call successors, (112), 16 states have call predecessors, (112), 16 states have return successors, (112), 110 states have call predecessors, (112), 112 states have call successors, (112) [2025-03-08 15:26:13,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 1125 transitions. [2025-03-08 15:26:13,354 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 1125 transitions. Word has length 354 [2025-03-08 15:26:13,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:26:13,355 INFO L471 AbstractCegarLoop]: Abstraction has 749 states and 1125 transitions. [2025-03-08 15:26:13,355 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 8.0) internal successors, (144), 17 states have internal predecessors, (144), 5 states have call successors, (110), 3 states have call predecessors, (110), 5 states have return successors, (112), 5 states have call predecessors, (112), 5 states have call successors, (112) [2025-03-08 15:26:13,356 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 1125 transitions. [2025-03-08 15:26:13,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2025-03-08 15:26:13,357 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:26:13,358 INFO L218 NwaCegarLoop]: trace histogram [54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 15:26:13,369 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-08 15:26:13,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:26:13,559 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:26:13,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:26:13,559 INFO L85 PathProgramCache]: Analyzing trace with hash -886468986, now seen corresponding path program 1 times [2025-03-08 15:26:13,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:26:13,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064617908] [2025-03-08 15:26:13,559 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:26:13,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:26:13,577 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 355 statements into 1 equivalence classes. [2025-03-08 15:26:13,792 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 355 of 355 statements. [2025-03-08 15:26:13,793 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:26:13,793 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-08 15:26:13,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2073518050] [2025-03-08 15:26:13,796 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:26:13,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:26:13,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 15:26:13,798 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 15:26:13,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-08 15:26:13,899 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 355 statements into 1 equivalence classes. [2025-03-08 15:26:13,993 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 355 of 355 statements. [2025-03-08 15:26:13,993 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:26:13,993 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:26:13,996 INFO L256 TraceCheckSpWp]: Trace formula consists of 828 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-03-08 15:26:14,002 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 15:26:14,960 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 2965 proven. 234 refuted. 0 times theorem prover too weak. 2525 trivial. 0 not checked. [2025-03-08 15:26:14,960 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 15:26:15,707 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 81 proven. 78 refuted. 0 times theorem prover too weak. 5565 trivial. 0 not checked. [2025-03-08 15:26:15,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:26:15,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064617908] [2025-03-08 15:26:15,708 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-08 15:26:15,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073518050] [2025-03-08 15:26:15,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2073518050] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 15:26:15,708 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-08 15:26:15,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9] total 21 [2025-03-08 15:26:15,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278482685] [2025-03-08 15:26:15,709 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-08 15:26:15,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-03-08 15:26:15,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:26:15,710 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-03-08 15:26:15,710 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=338, Unknown=0, NotChecked=0, Total=420 [2025-03-08 15:26:15,710 INFO L87 Difference]: Start difference. First operand 749 states and 1125 transitions. Second operand has 21 states, 21 states have (on average 6.285714285714286) internal successors, (132), 20 states have internal predecessors, (132), 5 states have call successors, (82), 4 states have call predecessors, (82), 6 states have return successors, (83), 5 states have call predecessors, (83), 5 states have call successors, (83) [2025-03-08 15:26:17,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:26:17,820 INFO L93 Difference]: Finished difference Result 1826 states and 2695 transitions. [2025-03-08 15:26:17,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-03-08 15:26:17,821 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 6.285714285714286) internal successors, (132), 20 states have internal predecessors, (132), 5 states have call successors, (82), 4 states have call predecessors, (82), 6 states have return successors, (83), 5 states have call predecessors, (83), 5 states have call successors, (83) Word has length 355 [2025-03-08 15:26:17,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:26:17,826 INFO L225 Difference]: With dead ends: 1826 [2025-03-08 15:26:17,826 INFO L226 Difference]: Without dead ends: 1448 [2025-03-08 15:26:17,828 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 732 GetRequests, 691 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=481, Invalid=1325, Unknown=0, NotChecked=0, Total=1806 [2025-03-08 15:26:17,828 INFO L435 NwaCegarLoop]: 226 mSDtfsCounter, 1482 mSDsluCounter, 1606 mSDsCounter, 0 mSdLazyCounter, 2166 mSolverCounterSat, 654 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1508 SdHoareTripleChecker+Valid, 1832 SdHoareTripleChecker+Invalid, 2820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 654 IncrementalHoareTripleChecker+Valid, 2166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2025-03-08 15:26:17,828 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1508 Valid, 1832 Invalid, 2820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [654 Valid, 2166 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2025-03-08 15:26:17,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1448 states. [2025-03-08 15:26:17,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1448 to 815. [2025-03-08 15:26:17,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 815 states, 684 states have (on average 1.4678362573099415) internal successors, (1004), 686 states have internal predecessors, (1004), 112 states have call successors, (112), 18 states have call predecessors, (112), 18 states have return successors, (112), 110 states have call predecessors, (112), 112 states have call successors, (112) [2025-03-08 15:26:17,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 1228 transitions. [2025-03-08 15:26:17,886 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 1228 transitions. Word has length 355 [2025-03-08 15:26:17,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:26:17,886 INFO L471 AbstractCegarLoop]: Abstraction has 815 states and 1228 transitions. [2025-03-08 15:26:17,887 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 6.285714285714286) internal successors, (132), 20 states have internal predecessors, (132), 5 states have call successors, (82), 4 states have call predecessors, (82), 6 states have return successors, (83), 5 states have call predecessors, (83), 5 states have call successors, (83) [2025-03-08 15:26:17,887 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 1228 transitions. [2025-03-08 15:26:17,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2025-03-08 15:26:17,889 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:26:17,889 INFO L218 NwaCegarLoop]: trace histogram [54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 15:26:17,897 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-08 15:26:18,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:26:18,090 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:26:18,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:26:18,090 INFO L85 PathProgramCache]: Analyzing trace with hash 139023013, now seen corresponding path program 1 times [2025-03-08 15:26:18,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:26:18,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320172425] [2025-03-08 15:26:18,090 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:26:18,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:26:18,109 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 355 statements into 1 equivalence classes. [2025-03-08 15:26:18,172 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 355 of 355 statements. [2025-03-08 15:26:18,172 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:26:18,173 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:26:18,368 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5724 trivial. 0 not checked. [2025-03-08 15:26:18,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:26:18,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320172425] [2025-03-08 15:26:18,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320172425] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:26:18,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 15:26:18,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 15:26:18,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493706950] [2025-03-08 15:26:18,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:26:18,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 15:26:18,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:26:18,370 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 15:26:18,371 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 15:26:18,371 INFO L87 Difference]: Start difference. First operand 815 states and 1228 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 1 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 1 states have call predecessors, (54), 1 states have call successors, (54) [2025-03-08 15:26:18,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:26:18,789 INFO L93 Difference]: Finished difference Result 2839 states and 4261 transitions. [2025-03-08 15:26:18,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 15:26:18,790 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 1 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 1 states have call predecessors, (54), 1 states have call successors, (54) Word has length 355 [2025-03-08 15:26:18,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:26:18,798 INFO L225 Difference]: With dead ends: 2839 [2025-03-08 15:26:18,798 INFO L226 Difference]: Without dead ends: 2027 [2025-03-08 15:26:18,800 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-03-08 15:26:18,802 INFO L435 NwaCegarLoop]: 373 mSDtfsCounter, 272 mSDsluCounter, 796 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 1169 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 15:26:18,803 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 1169 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 15:26:18,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2027 states. [2025-03-08 15:26:18,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2027 to 1893. [2025-03-08 15:26:18,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1893 states, 1602 states have (on average 1.463171036204744) internal successors, (2344), 1608 states have internal predecessors, (2344), 244 states have call successors, (244), 46 states have call predecessors, (244), 46 states have return successors, (244), 238 states have call predecessors, (244), 244 states have call successors, (244) [2025-03-08 15:26:18,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1893 states to 1893 states and 2832 transitions. [2025-03-08 15:26:18,969 INFO L78 Accepts]: Start accepts. Automaton has 1893 states and 2832 transitions. Word has length 355 [2025-03-08 15:26:18,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:26:18,970 INFO L471 AbstractCegarLoop]: Abstraction has 1893 states and 2832 transitions. [2025-03-08 15:26:18,970 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 1 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 1 states have call predecessors, (54), 1 states have call successors, (54) [2025-03-08 15:26:18,970 INFO L276 IsEmpty]: Start isEmpty. Operand 1893 states and 2832 transitions. [2025-03-08 15:26:18,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2025-03-08 15:26:18,974 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:26:18,974 INFO L218 NwaCegarLoop]: trace histogram [54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 15:26:18,975 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-08 15:26:18,975 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:26:18,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:26:18,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1063831269, now seen corresponding path program 1 times [2025-03-08 15:26:18,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:26:18,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108978855] [2025-03-08 15:26:18,975 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:26:18,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:26:18,993 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 355 statements into 1 equivalence classes. [2025-03-08 15:26:19,068 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 355 of 355 statements. [2025-03-08 15:26:19,068 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:26:19,068 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:26:19,256 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 93 proven. 66 refuted. 0 times theorem prover too weak. 5565 trivial. 0 not checked. [2025-03-08 15:26:19,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:26:19,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108978855] [2025-03-08 15:26:19,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108978855] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 15:26:19,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720406221] [2025-03-08 15:26:19,257 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:26:19,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:26:19,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 15:26:19,259 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 15:26:19,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-08 15:26:19,364 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 355 statements into 1 equivalence classes. [2025-03-08 15:26:19,442 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 355 of 355 statements. [2025-03-08 15:26:19,443 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:26:19,443 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:26:19,446 INFO L256 TraceCheckSpWp]: Trace formula consists of 827 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-08 15:26:19,451 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 15:26:19,619 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 2843 proven. 66 refuted. 0 times theorem prover too weak. 2815 trivial. 0 not checked. [2025-03-08 15:26:19,619 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 15:26:19,822 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 93 proven. 66 refuted. 0 times theorem prover too weak. 5565 trivial. 0 not checked. [2025-03-08 15:26:19,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [720406221] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 15:26:19,822 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 15:26:19,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2025-03-08 15:26:19,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942205607] [2025-03-08 15:26:19,823 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 15:26:19,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 15:26:19,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:26:19,824 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 15:26:19,824 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-03-08 15:26:19,824 INFO L87 Difference]: Start difference. First operand 1893 states and 2832 transitions. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 2 states have call successors, (76), 2 states have call predecessors, (76), 4 states have return successors, (77), 2 states have call predecessors, (77), 2 states have call successors, (77) [2025-03-08 15:26:20,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:26:20,265 INFO L93 Difference]: Finished difference Result 3961 states and 5853 transitions. [2025-03-08 15:26:20,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 15:26:20,265 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 2 states have call successors, (76), 2 states have call predecessors, (76), 4 states have return successors, (77), 2 states have call predecessors, (77), 2 states have call successors, (77) Word has length 355 [2025-03-08 15:26:20,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:26:20,276 INFO L225 Difference]: With dead ends: 3961 [2025-03-08 15:26:20,276 INFO L226 Difference]: Without dead ends: 2071 [2025-03-08 15:26:20,280 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 717 GetRequests, 707 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2025-03-08 15:26:20,281 INFO L435 NwaCegarLoop]: 270 mSDtfsCounter, 173 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 686 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 15:26:20,282 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 686 Invalid, 502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 15:26:20,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2071 states. [2025-03-08 15:26:20,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2071 to 1990. [2025-03-08 15:26:20,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1990 states, 1655 states have (on average 1.4314199395770393) internal successors, (2369), 1662 states have internal predecessors, (2369), 275 states have call successors, (275), 59 states have call predecessors, (275), 59 states have return successors, (275), 268 states have call predecessors, (275), 275 states have call successors, (275) [2025-03-08 15:26:20,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1990 states to 1990 states and 2919 transitions. [2025-03-08 15:26:20,421 INFO L78 Accepts]: Start accepts. Automaton has 1990 states and 2919 transitions. Word has length 355 [2025-03-08 15:26:20,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:26:20,422 INFO L471 AbstractCegarLoop]: Abstraction has 1990 states and 2919 transitions. [2025-03-08 15:26:20,422 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 2 states have call successors, (76), 2 states have call predecessors, (76), 4 states have return successors, (77), 2 states have call predecessors, (77), 2 states have call successors, (77) [2025-03-08 15:26:20,422 INFO L276 IsEmpty]: Start isEmpty. Operand 1990 states and 2919 transitions. [2025-03-08 15:26:20,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2025-03-08 15:26:20,424 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:26:20,424 INFO L218 NwaCegarLoop]: trace histogram [54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 15:26:20,433 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-03-08 15:26:20,625 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:26:20,625 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:26:20,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:26:20,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1301555609, now seen corresponding path program 1 times [2025-03-08 15:26:20,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:26:20,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177085955] [2025-03-08 15:26:20,626 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:26:20,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:26:20,644 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 355 statements into 1 equivalence classes. [2025-03-08 15:26:20,778 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 355 of 355 statements. [2025-03-08 15:26:20,779 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:26:20,779 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-08 15:26:20,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1644052055] [2025-03-08 15:26:20,782 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:26:20,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:26:20,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 15:26:20,784 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 15:26:20,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-08 15:26:20,894 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 355 statements into 1 equivalence classes. [2025-03-08 15:26:20,979 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 355 of 355 statements. [2025-03-08 15:26:20,980 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:26:20,980 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:26:20,984 INFO L256 TraceCheckSpWp]: Trace formula consists of 824 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-03-08 15:26:20,989 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 15:26:22,197 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 2933 proven. 162 refuted. 0 times theorem prover too weak. 2629 trivial. 0 not checked. [2025-03-08 15:26:22,198 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 15:26:22,452 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5724 trivial. 0 not checked. [2025-03-08 15:26:22,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:26:22,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177085955] [2025-03-08 15:26:22,452 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-08 15:26:22,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644052055] [2025-03-08 15:26:22,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1644052055] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-08 15:26:22,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 15:26:22,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 17 [2025-03-08 15:26:22,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951948363] [2025-03-08 15:26:22,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:26:22,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 15:26:22,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:26:22,453 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 15:26:22,453 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2025-03-08 15:26:22,454 INFO L87 Difference]: Start difference. First operand 1990 states and 2919 transitions. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 1 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 1 states have call predecessors, (54), 1 states have call successors, (54) [2025-03-08 15:26:22,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:26:22,832 INFO L93 Difference]: Finished difference Result 5036 states and 7513 transitions. [2025-03-08 15:26:22,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 15:26:22,833 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 1 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 1 states have call predecessors, (54), 1 states have call successors, (54) Word has length 355 [2025-03-08 15:26:22,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:26:22,844 INFO L225 Difference]: With dead ends: 5036 [2025-03-08 15:26:22,844 INFO L226 Difference]: Without dead ends: 3138 [2025-03-08 15:26:22,848 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 712 GetRequests, 694 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2025-03-08 15:26:22,849 INFO L435 NwaCegarLoop]: 270 mSDtfsCounter, 604 mSDsluCounter, 1021 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 604 SdHoareTripleChecker+Valid, 1291 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 15:26:22,849 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [604 Valid, 1291 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 15:26:22,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3138 states. [2025-03-08 15:26:22,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3138 to 2006. [2025-03-08 15:26:22,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2006 states, 1671 states have (on average 1.4272890484739678) internal successors, (2385), 1678 states have internal predecessors, (2385), 275 states have call successors, (275), 59 states have call predecessors, (275), 59 states have return successors, (275), 268 states have call predecessors, (275), 275 states have call successors, (275) [2025-03-08 15:26:22,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2006 states to 2006 states and 2935 transitions. [2025-03-08 15:26:22,992 INFO L78 Accepts]: Start accepts. Automaton has 2006 states and 2935 transitions. Word has length 355 [2025-03-08 15:26:22,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:26:22,992 INFO L471 AbstractCegarLoop]: Abstraction has 2006 states and 2935 transitions. [2025-03-08 15:26:22,993 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 1 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 1 states have call predecessors, (54), 1 states have call successors, (54) [2025-03-08 15:26:22,993 INFO L276 IsEmpty]: Start isEmpty. Operand 2006 states and 2935 transitions. [2025-03-08 15:26:22,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2025-03-08 15:26:22,995 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:26:22,995 INFO L218 NwaCegarLoop]: trace histogram [54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 15:26:23,004 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-08 15:26:23,195 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:26:23,196 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:26:23,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:26:23,197 INFO L85 PathProgramCache]: Analyzing trace with hash -357748295, now seen corresponding path program 1 times [2025-03-08 15:26:23,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:26:23,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219332045] [2025-03-08 15:26:23,197 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:26:23,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:26:23,217 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 355 statements into 1 equivalence classes. [2025-03-08 15:26:23,257 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 355 of 355 statements. [2025-03-08 15:26:23,257 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:26:23,258 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:26:23,491 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5724 trivial. 0 not checked. [2025-03-08 15:26:23,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:26:23,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219332045] [2025-03-08 15:26:23,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219332045] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:26:23,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 15:26:23,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 15:26:23,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750296850] [2025-03-08 15:26:23,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:26:23,492 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 15:26:23,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:26:23,493 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 15:26:23,493 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 15:26:23,493 INFO L87 Difference]: Start difference. First operand 2006 states and 2935 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 1 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 1 states have call predecessors, (54), 1 states have call successors, (54) [2025-03-08 15:26:23,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:26:23,970 INFO L93 Difference]: Finished difference Result 4540 states and 6651 transitions. [2025-03-08 15:26:23,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 15:26:23,971 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 1 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 1 states have call predecessors, (54), 1 states have call successors, (54) Word has length 355 [2025-03-08 15:26:23,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:26:23,980 INFO L225 Difference]: With dead ends: 4540 [2025-03-08 15:26:23,981 INFO L226 Difference]: Without dead ends: 2618 [2025-03-08 15:26:23,984 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-03-08 15:26:23,985 INFO L435 NwaCegarLoop]: 331 mSDtfsCounter, 360 mSDsluCounter, 748 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 1079 SdHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 15:26:23,985 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 1079 Invalid, 476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 15:26:23,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2618 states. [2025-03-08 15:26:24,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2618 to 2396. [2025-03-08 15:26:24,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2396 states, 1982 states have (on average 1.4142280524722504) internal successors, (2803), 1990 states have internal predecessors, (2803), 339 states have call successors, (339), 74 states have call predecessors, (339), 74 states have return successors, (339), 331 states have call predecessors, (339), 339 states have call successors, (339) [2025-03-08 15:26:24,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2396 states to 2396 states and 3481 transitions. [2025-03-08 15:26:24,155 INFO L78 Accepts]: Start accepts. Automaton has 2396 states and 3481 transitions. Word has length 355 [2025-03-08 15:26:24,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:26:24,155 INFO L471 AbstractCegarLoop]: Abstraction has 2396 states and 3481 transitions. [2025-03-08 15:26:24,155 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 1 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 1 states have call predecessors, (54), 1 states have call successors, (54) [2025-03-08 15:26:24,155 INFO L276 IsEmpty]: Start isEmpty. Operand 2396 states and 3481 transitions. [2025-03-08 15:26:24,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2025-03-08 15:26:24,157 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:26:24,158 INFO L218 NwaCegarLoop]: trace histogram [54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 15:26:24,158 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-08 15:26:24,158 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:26:24,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:26:24,158 INFO L85 PathProgramCache]: Analyzing trace with hash 106172199, now seen corresponding path program 1 times [2025-03-08 15:26:24,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:26:24,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441483854] [2025-03-08 15:26:24,159 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:26:24,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:26:24,174 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 356 statements into 1 equivalence classes. [2025-03-08 15:26:24,237 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 356 of 356 statements. [2025-03-08 15:26:24,237 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:26:24,237 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:26:24,908 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 9 proven. 150 refuted. 0 times theorem prover too weak. 5565 trivial. 0 not checked. [2025-03-08 15:26:24,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:26:24,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441483854] [2025-03-08 15:26:24,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441483854] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 15:26:24,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726330094] [2025-03-08 15:26:24,909 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:26:24,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:26:24,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 15:26:24,911 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 15:26:24,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-08 15:26:25,022 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 356 statements into 1 equivalence classes. [2025-03-08 15:26:25,090 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 356 of 356 statements. [2025-03-08 15:26:25,090 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:26:25,090 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:26:25,094 INFO L256 TraceCheckSpWp]: Trace formula consists of 827 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-08 15:26:25,098 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 15:26:25,568 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 659 proven. 150 refuted. 0 times theorem prover too weak. 4915 trivial. 0 not checked. [2025-03-08 15:26:25,568 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 15:26:25,901 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 9 proven. 150 refuted. 0 times theorem prover too weak. 5565 trivial. 0 not checked. [2025-03-08 15:26:25,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1726330094] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 15:26:25,901 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 15:26:25,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 17 [2025-03-08 15:26:25,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770385263] [2025-03-08 15:26:25,901 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 15:26:25,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-03-08 15:26:25,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:26:25,903 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-03-08 15:26:25,903 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2025-03-08 15:26:25,903 INFO L87 Difference]: Start difference. First operand 2396 states and 3481 transitions. Second operand has 17 states, 17 states have (on average 8.0) internal successors, (136), 17 states have internal predecessors, (136), 2 states have call successors, (104), 2 states have call predecessors, (104), 4 states have return successors, (105), 2 states have call predecessors, (105), 2 states have call successors, (105) [2025-03-08 15:26:27,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:26:27,572 INFO L93 Difference]: Finished difference Result 7779 states and 11253 transitions. [2025-03-08 15:26:27,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2025-03-08 15:26:27,572 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 8.0) internal successors, (136), 17 states have internal predecessors, (136), 2 states have call successors, (104), 2 states have call predecessors, (104), 4 states have return successors, (105), 2 states have call predecessors, (105), 2 states have call successors, (105) Word has length 356 [2025-03-08 15:26:27,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:26:27,592 INFO L225 Difference]: With dead ends: 7779 [2025-03-08 15:26:27,593 INFO L226 Difference]: Without dead ends: 5393 [2025-03-08 15:26:27,598 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 742 GetRequests, 705 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=336, Invalid=1070, Unknown=0, NotChecked=0, Total=1406 [2025-03-08 15:26:27,599 INFO L435 NwaCegarLoop]: 387 mSDtfsCounter, 1513 mSDsluCounter, 1904 mSDsCounter, 0 mSdLazyCounter, 1870 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1516 SdHoareTripleChecker+Valid, 2291 SdHoareTripleChecker+Invalid, 2020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 1870 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-03-08 15:26:27,599 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1516 Valid, 2291 Invalid, 2020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 1870 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-03-08 15:26:27,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5393 states. [2025-03-08 15:26:27,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5393 to 2360. [2025-03-08 15:26:27,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2360 states, 1875 states have (on average 1.3722666666666667) internal successors, (2573), 1881 states have internal predecessors, (2573), 395 states have call successors, (395), 89 states have call predecessors, (395), 89 states have return successors, (395), 389 states have call predecessors, (395), 395 states have call successors, (395) [2025-03-08 15:26:27,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2360 states to 2360 states and 3363 transitions. [2025-03-08 15:26:27,921 INFO L78 Accepts]: Start accepts. Automaton has 2360 states and 3363 transitions. Word has length 356 [2025-03-08 15:26:27,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:26:27,922 INFO L471 AbstractCegarLoop]: Abstraction has 2360 states and 3363 transitions. [2025-03-08 15:26:27,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 8.0) internal successors, (136), 17 states have internal predecessors, (136), 2 states have call successors, (104), 2 states have call predecessors, (104), 4 states have return successors, (105), 2 states have call predecessors, (105), 2 states have call successors, (105) [2025-03-08 15:26:27,924 INFO L276 IsEmpty]: Start isEmpty. Operand 2360 states and 3363 transitions. [2025-03-08 15:26:27,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2025-03-08 15:26:27,926 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:26:27,926 INFO L218 NwaCegarLoop]: trace histogram [54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 15:26:27,936 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-03-08 15:26:28,127 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-03-08 15:26:28,127 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:26:28,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:26:28,128 INFO L85 PathProgramCache]: Analyzing trace with hash -755400434, now seen corresponding path program 1 times [2025-03-08 15:26:28,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:26:28,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937686074] [2025-03-08 15:26:28,128 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:26:28,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:26:28,147 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 356 statements into 1 equivalence classes. [2025-03-08 15:26:28,304 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 356 of 356 statements. [2025-03-08 15:26:28,304 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:26:28,304 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-08 15:26:28,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [812655575] [2025-03-08 15:26:28,308 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:26:28,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:26:28,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 15:26:28,310 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 15:26:28,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-08 15:26:28,432 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 356 statements into 1 equivalence classes. [2025-03-08 15:26:28,519 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 356 of 356 statements. [2025-03-08 15:26:28,519 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:26:28,519 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:26:28,523 INFO L256 TraceCheckSpWp]: Trace formula consists of 824 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-08 15:26:28,528 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 15:26:28,902 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 3653 proven. 147 refuted. 0 times theorem prover too weak. 1924 trivial. 0 not checked. [2025-03-08 15:26:28,902 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 15:26:29,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:26:29,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937686074] [2025-03-08 15:26:29,171 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-08 15:26:29,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812655575] [2025-03-08 15:26:29,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [812655575] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 15:26:29,171 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-03-08 15:26:29,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2025-03-08 15:26:29,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158232292] [2025-03-08 15:26:29,171 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-03-08 15:26:29,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-08 15:26:29,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:26:29,172 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-08 15:26:29,172 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2025-03-08 15:26:29,172 INFO L87 Difference]: Start difference. First operand 2360 states and 3363 transitions. Second operand has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 9 states have internal predecessors, (101), 3 states have call successors, (54), 3 states have call predecessors, (54), 5 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) [2025-03-08 15:26:30,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:26:30,419 INFO L93 Difference]: Finished difference Result 6345 states and 8757 transitions. [2025-03-08 15:26:30,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-03-08 15:26:30,421 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 9 states have internal predecessors, (101), 3 states have call successors, (54), 3 states have call predecessors, (54), 5 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) Word has length 356 [2025-03-08 15:26:30,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:26:30,433 INFO L225 Difference]: With dead ends: 6345 [2025-03-08 15:26:30,433 INFO L226 Difference]: Without dead ends: 4077 [2025-03-08 15:26:30,436 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 399 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2025-03-08 15:26:30,436 INFO L435 NwaCegarLoop]: 264 mSDtfsCounter, 317 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 746 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 785 SdHoareTripleChecker+Invalid, 894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-03-08 15:26:30,437 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [333 Valid, 785 Invalid, 894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 746 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-03-08 15:26:30,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4077 states. [2025-03-08 15:26:30,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4077 to 3799. [2025-03-08 15:26:30,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3799 states, 2935 states have (on average 1.317206132879046) internal successors, (3866), 2951 states have internal predecessors, (3866), 669 states have call successors, (669), 194 states have call predecessors, (669), 194 states have return successors, (669), 653 states have call predecessors, (669), 669 states have call successors, (669) [2025-03-08 15:26:30,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3799 states to 3799 states and 5204 transitions. [2025-03-08 15:26:30,796 INFO L78 Accepts]: Start accepts. Automaton has 3799 states and 5204 transitions. Word has length 356 [2025-03-08 15:26:30,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:26:30,796 INFO L471 AbstractCegarLoop]: Abstraction has 3799 states and 5204 transitions. [2025-03-08 15:26:30,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 9 states have internal predecessors, (101), 3 states have call successors, (54), 3 states have call predecessors, (54), 5 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) [2025-03-08 15:26:30,797 INFO L276 IsEmpty]: Start isEmpty. Operand 3799 states and 5204 transitions. [2025-03-08 15:26:30,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2025-03-08 15:26:30,805 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:26:30,806 INFO L218 NwaCegarLoop]: trace histogram [54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 15:26:30,828 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-03-08 15:26:31,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2025-03-08 15:26:31,007 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:26:31,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:26:31,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1164224659, now seen corresponding path program 1 times [2025-03-08 15:26:31,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:26:31,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012359854] [2025-03-08 15:26:31,008 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:26:31,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:26:31,023 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 356 statements into 1 equivalence classes. [2025-03-08 15:26:31,170 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 356 of 356 statements. [2025-03-08 15:26:31,171 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:26:31,171 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-08 15:26:31,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [866604728] [2025-03-08 15:26:31,174 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:26:31,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:26:31,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 15:26:31,176 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 15:26:31,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-08 15:26:31,302 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 356 statements into 1 equivalence classes. [2025-03-08 15:26:31,391 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 356 of 356 statements. [2025-03-08 15:26:31,392 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:26:31,392 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:26:31,395 INFO L256 TraceCheckSpWp]: Trace formula consists of 822 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-03-08 15:26:31,400 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 15:26:32,508 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 3535 proven. 264 refuted. 0 times theorem prover too weak. 1925 trivial. 0 not checked. [2025-03-08 15:26:32,508 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 15:26:37,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:26:37,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012359854] [2025-03-08 15:26:37,072 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-08 15:26:37,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [866604728] [2025-03-08 15:26:37,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [866604728] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 15:26:37,072 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-03-08 15:26:37,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2025-03-08 15:26:37,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416423519] [2025-03-08 15:26:37,072 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-03-08 15:26:37,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-08 15:26:37,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:26:37,073 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-08 15:26:37,073 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=118, Unknown=1, NotChecked=0, Total=182 [2025-03-08 15:26:37,074 INFO L87 Difference]: Start difference. First operand 3799 states and 5204 transitions. Second operand has 12 states, 12 states have (on average 8.666666666666666) internal successors, (104), 11 states have internal predecessors, (104), 4 states have call successors, (54), 4 states have call predecessors, (54), 6 states have return successors, (54), 4 states have call predecessors, (54), 4 states have call successors, (54) [2025-03-08 15:26:40,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:26:40,674 INFO L93 Difference]: Finished difference Result 8004 states and 11036 transitions. [2025-03-08 15:26:40,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-08 15:26:40,674 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.666666666666666) internal successors, (104), 11 states have internal predecessors, (104), 4 states have call successors, (54), 4 states have call predecessors, (54), 6 states have return successors, (54), 4 states have call predecessors, (54), 4 states have call successors, (54) Word has length 356 [2025-03-08 15:26:40,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:26:40,695 INFO L225 Difference]: With dead ends: 8004 [2025-03-08 15:26:40,695 INFO L226 Difference]: Without dead ends: 4305 [2025-03-08 15:26:40,702 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 393 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=101, Invalid=170, Unknown=1, NotChecked=0, Total=272 [2025-03-08 15:26:40,703 INFO L435 NwaCegarLoop]: 250 mSDtfsCounter, 153 mSDsluCounter, 1140 mSDsCounter, 0 mSdLazyCounter, 983 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 1390 SdHoareTripleChecker+Invalid, 992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 983 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2025-03-08 15:26:40,703 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 1390 Invalid, 992 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 983 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2025-03-08 15:26:40,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4305 states. [2025-03-08 15:26:41,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4305 to 4207. [2025-03-08 15:26:41,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4207 states, 3328 states have (on average 1.3401442307692308) internal successors, (4460), 3341 states have internal predecessors, (4460), 685 states have call successors, (685), 193 states have call predecessors, (685), 193 states have return successors, (685), 672 states have call predecessors, (685), 685 states have call successors, (685) [2025-03-08 15:26:41,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4207 states to 4207 states and 5830 transitions. [2025-03-08 15:26:41,073 INFO L78 Accepts]: Start accepts. Automaton has 4207 states and 5830 transitions. Word has length 356 [2025-03-08 15:26:41,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:26:41,073 INFO L471 AbstractCegarLoop]: Abstraction has 4207 states and 5830 transitions. [2025-03-08 15:26:41,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.666666666666666) internal successors, (104), 11 states have internal predecessors, (104), 4 states have call successors, (54), 4 states have call predecessors, (54), 6 states have return successors, (54), 4 states have call predecessors, (54), 4 states have call successors, (54) [2025-03-08 15:26:41,074 INFO L276 IsEmpty]: Start isEmpty. Operand 4207 states and 5830 transitions. [2025-03-08 15:26:41,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2025-03-08 15:26:41,077 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:26:41,077 INFO L218 NwaCegarLoop]: trace histogram [54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 15:26:41,085 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-03-08 15:26:41,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-03-08 15:26:41,281 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:26:41,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:26:41,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1063038131, now seen corresponding path program 1 times [2025-03-08 15:26:41,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:26:41,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288351575] [2025-03-08 15:26:41,283 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:26:41,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:26:41,302 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 356 statements into 1 equivalence classes. [2025-03-08 15:26:41,430 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 356 of 356 statements. [2025-03-08 15:26:41,430 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:26:41,431 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:26:42,265 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 81 proven. 78 refuted. 0 times theorem prover too weak. 5565 trivial. 0 not checked. [2025-03-08 15:26:42,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:26:42,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288351575] [2025-03-08 15:26:42,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288351575] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 15:26:42,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762908206] [2025-03-08 15:26:42,265 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:26:42,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:26:42,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 15:26:42,268 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 15:26:42,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-08 15:26:42,400 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 356 statements into 1 equivalence classes. [2025-03-08 15:26:42,481 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 356 of 356 statements. [2025-03-08 15:26:42,481 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:26:42,482 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:26:42,486 INFO L256 TraceCheckSpWp]: Trace formula consists of 821 conjuncts, 43 conjuncts are in the unsatisfiable core [2025-03-08 15:26:42,492 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 15:26:59,586 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 3116 proven. 576 refuted. 0 times theorem prover too weak. 2032 trivial. 0 not checked. [2025-03-08 15:26:59,586 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 15:27:12,670 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 147 proven. 321 refuted. 0 times theorem prover too weak. 5256 trivial. 0 not checked. [2025-03-08 15:27:12,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [762908206] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 15:27:12,671 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 15:27:12,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 22, 22] total 48 [2025-03-08 15:27:12,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333462569] [2025-03-08 15:27:12,671 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 15:27:12,672 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2025-03-08 15:27:12,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:27:12,672 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2025-03-08 15:27:12,673 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=420, Invalid=1836, Unknown=0, NotChecked=0, Total=2256 [2025-03-08 15:27:12,673 INFO L87 Difference]: Start difference. First operand 4207 states and 5830 transitions. Second operand has 48 states, 48 states have (on average 5.6875) internal successors, (273), 48 states have internal predecessors, (273), 11 states have call successors, (162), 6 states have call predecessors, (162), 14 states have return successors, (162), 11 states have call predecessors, (162), 11 states have call successors, (162)