./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/reducercommutativity/rangesum05.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 798a7b37 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/reducercommutativity/rangesum05.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 aee69f990ab81a58f1fe8cd275c8a09f43ca6a442f73810f885d3d0c9a85d2b3 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-03 09:12:18,813 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-03 09:12:18,868 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-03 09:12:18,874 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-03 09:12:18,874 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-03 09:12:18,896 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-03 09:12:18,897 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-03 09:12:18,897 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-03 09:12:18,897 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-03 09:12:18,897 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-03 09:12:18,898 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-03 09:12:18,898 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-03 09:12:18,898 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-03 09:12:18,898 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-03 09:12:18,898 INFO L153 SettingsManager]: * Use SBE=true [2025-03-03 09:12:18,899 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-03 09:12:18,899 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-03 09:12:18,899 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-03 09:12:18,899 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-03 09:12:18,899 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-03 09:12:18,899 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-03 09:12:18,900 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-03 09:12:18,900 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-03 09:12:18,900 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-03 09:12:18,900 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-03 09:12:18,900 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-03 09:12:18,900 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-03 09:12:18,900 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-03 09:12:18,900 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-03 09:12:18,900 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-03 09:12:18,900 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-03 09:12:18,900 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-03 09:12:18,901 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 09:12:18,901 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-03 09:12:18,901 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-03 09:12:18,901 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-03 09:12:18,901 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-03 09:12:18,901 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-03 09:12:18,901 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-03 09:12:18,901 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-03 09:12:18,901 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-03 09:12:18,901 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-03 09:12:18,901 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-03 09:12:18,901 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 -> aee69f990ab81a58f1fe8cd275c8a09f43ca6a442f73810f885d3d0c9a85d2b3 [2025-03-03 09:12:19,132 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-03 09:12:19,140 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-03 09:12:19,142 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-03 09:12:19,143 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-03 09:12:19,143 INFO L274 PluginConnector]: CDTParser initialized [2025-03-03 09:12:19,144 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/reducercommutativity/rangesum05.i [2025-03-03 09:12:20,259 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8cbbad62c/23b860422edc4d238daa5d7e694a73bf/FLAG55059a318 [2025-03-03 09:12:20,485 INFO L384 CDTParser]: Found 1 translation units. [2025-03-03 09:12:20,490 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/reducercommutativity/rangesum05.i [2025-03-03 09:12:20,515 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8cbbad62c/23b860422edc4d238daa5d7e694a73bf/FLAG55059a318 [2025-03-03 09:12:20,834 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8cbbad62c/23b860422edc4d238daa5d7e694a73bf [2025-03-03 09:12:20,837 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-03 09:12:20,838 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-03 09:12:20,839 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-03 09:12:20,839 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-03 09:12:20,843 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-03 09:12:20,844 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 09:12:20" (1/1) ... [2025-03-03 09:12:20,846 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b277b92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:12:20, skipping insertion in model container [2025-03-03 09:12:20,846 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 09:12:20" (1/1) ... [2025-03-03 09:12:20,859 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-03 09:12:20,978 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/reducercommutativity/rangesum05.i[1457,1470] [2025-03-03 09:12:20,984 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 09:12:20,990 INFO L200 MainTranslator]: Completed pre-run [2025-03-03 09:12:21,010 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/reducercommutativity/rangesum05.i[1457,1470] [2025-03-03 09:12:21,011 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 09:12:21,021 INFO L204 MainTranslator]: Completed translation [2025-03-03 09:12:21,022 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:12:21 WrapperNode [2025-03-03 09:12:21,023 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-03 09:12:21,024 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-03 09:12:21,024 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-03 09:12:21,024 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-03 09:12:21,028 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:12:21" (1/1) ... [2025-03-03 09:12:21,033 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:12:21" (1/1) ... [2025-03-03 09:12:21,045 INFO L138 Inliner]: procedures = 17, calls = 23, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 65 [2025-03-03 09:12:21,046 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-03 09:12:21,046 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-03 09:12:21,047 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-03 09:12:21,047 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-03 09:12:21,053 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:12:21" (1/1) ... [2025-03-03 09:12:21,053 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:12:21" (1/1) ... [2025-03-03 09:12:21,054 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:12:21" (1/1) ... [2025-03-03 09:12:21,063 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 5 writes are split as follows [0, 5]. [2025-03-03 09:12:21,063 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:12:21" (1/1) ... [2025-03-03 09:12:21,063 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:12:21" (1/1) ... [2025-03-03 09:12:21,067 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:12:21" (1/1) ... [2025-03-03 09:12:21,067 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:12:21" (1/1) ... [2025-03-03 09:12:21,068 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:12:21" (1/1) ... [2025-03-03 09:12:21,068 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:12:21" (1/1) ... [2025-03-03 09:12:21,069 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-03 09:12:21,070 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-03 09:12:21,070 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-03 09:12:21,070 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-03 09:12:21,071 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:12:21" (1/1) ... [2025-03-03 09:12:21,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 09:12:21,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 09:12:21,094 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) [2025-03-03 09:12:21,097 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 [2025-03-03 09:12:21,113 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-03 09:12:21,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-03 09:12:21,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-03 09:12:21,113 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-03 09:12:21,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-03 09:12:21,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-03 09:12:21,114 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-03 09:12:21,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-03 09:12:21,114 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-03 09:12:21,114 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-03 09:12:21,114 INFO L130 BoogieDeclarations]: Found specification of procedure rangesum [2025-03-03 09:12:21,114 INFO L138 BoogieDeclarations]: Found implementation of procedure rangesum [2025-03-03 09:12:21,114 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-03 09:12:21,169 INFO L256 CfgBuilder]: Building ICFG [2025-03-03 09:12:21,170 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-03 09:12:21,260 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L42: call ULTIMATE.dealloc(main_~#x~0#1.base, main_~#x~0#1.offset);havoc main_~#x~0#1.base, main_~#x~0#1.offset; [2025-03-03 09:12:21,285 INFO L? ?]: Removed 17 outVars from TransFormulas that were not future-live. [2025-03-03 09:12:21,286 INFO L307 CfgBuilder]: Performing block encoding [2025-03-03 09:12:21,291 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-03 09:12:21,292 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-03 09:12:21,292 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 09:12:21 BoogieIcfgContainer [2025-03-03 09:12:21,292 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-03 09:12:21,294 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-03 09:12:21,294 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-03 09:12:21,297 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-03 09:12:21,297 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 09:12:20" (1/3) ... [2025-03-03 09:12:21,297 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@344baf89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 09:12:21, skipping insertion in model container [2025-03-03 09:12:21,297 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:12:21" (2/3) ... [2025-03-03 09:12:21,298 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@344baf89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 09:12:21, skipping insertion in model container [2025-03-03 09:12:21,298 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 09:12:21" (3/3) ... [2025-03-03 09:12:21,299 INFO L128 eAbstractionObserver]: Analyzing ICFG rangesum05.i [2025-03-03 09:12:21,308 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-03 09:12:21,310 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG rangesum05.i that has 2 procedures, 25 locations, 1 initial locations, 3 loop locations, and 1 error locations. [2025-03-03 09:12:21,348 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-03 09:12:21,356 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;@78fd082e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-03 09:12:21,357 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-03 09:12:21,359 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 19 states have (on average 1.368421052631579) internal successors, (26), 20 states have internal predecessors, (26), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-03 09:12:21,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2025-03-03 09:12:21,363 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:12:21,363 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:12:21,364 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:12:21,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:12:21,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1874150879, now seen corresponding path program 1 times [2025-03-03 09:12:21,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:12:21,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173445963] [2025-03-03 09:12:21,372 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:12:21,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:12:21,428 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-03-03 09:12:21,442 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-03 09:12:21,442 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:12:21,442 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:12:21,619 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-03-03 09:12:21,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:12:21,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173445963] [2025-03-03 09:12:21,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173445963] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 09:12:21,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 09:12:21,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 09:12:21,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413155311] [2025-03-03 09:12:21,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 09:12:21,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 09:12:21,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:12:21,635 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 09:12:21,636 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 09:12:21,637 INFO L87 Difference]: Start difference. First operand has 25 states, 19 states have (on average 1.368421052631579) internal successors, (26), 20 states have internal predecessors, (26), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2025-03-03 09:12:21,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:12:21,659 INFO L93 Difference]: Finished difference Result 48 states and 62 transitions. [2025-03-03 09:12:21,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 09:12:21,661 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2025-03-03 09:12:21,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:12:21,664 INFO L225 Difference]: With dead ends: 48 [2025-03-03 09:12:21,664 INFO L226 Difference]: Without dead ends: 22 [2025-03-03 09:12:21,666 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 [2025-03-03 09:12:21,668 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 0 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 09:12:21,668 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 57 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 09:12:21,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2025-03-03 09:12:21,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2025-03-03 09:12:21,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-03 09:12:21,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 28 transitions. [2025-03-03 09:12:21,688 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 28 transitions. Word has length 28 [2025-03-03 09:12:21,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:12:21,688 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 28 transitions. [2025-03-03 09:12:21,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2025-03-03 09:12:21,688 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 28 transitions. [2025-03-03 09:12:21,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-03-03 09:12:21,689 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:12:21,689 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:12:21,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-03 09:12:21,689 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:12:21,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:12:21,690 INFO L85 PathProgramCache]: Analyzing trace with hash 501005872, now seen corresponding path program 1 times [2025-03-03 09:12:21,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:12:21,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118181513] [2025-03-03 09:12:21,690 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:12:21,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:12:21,707 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-03-03 09:12:21,719 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-03-03 09:12:21,720 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:12:21,720 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:12:21,817 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-03-03 09:12:21,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:12:21,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118181513] [2025-03-03 09:12:21,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118181513] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 09:12:21,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [475922919] [2025-03-03 09:12:21,817 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:12:21,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:12:21,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 09:12:21,820 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) [2025-03-03 09:12:21,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-03 09:12:21,875 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-03-03 09:12:21,921 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-03-03 09:12:21,922 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:12:21,922 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:12:21,924 INFO L256 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-03 09:12:21,927 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 09:12:21,949 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-03 09:12:21,949 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 09:12:21,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [475922919] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 09:12:21,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 09:12:21,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2025-03-03 09:12:21,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094923036] [2025-03-03 09:12:21,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 09:12:21,951 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 09:12:21,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:12:21,951 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 09:12:21,951 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-03 09:12:21,951 INFO L87 Difference]: Start difference. First operand 22 states and 28 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2025-03-03 09:12:21,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:12:21,964 INFO L93 Difference]: Finished difference Result 41 states and 56 transitions. [2025-03-03 09:12:21,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 09:12:21,965 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 29 [2025-03-03 09:12:21,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:12:21,965 INFO L225 Difference]: With dead ends: 41 [2025-03-03 09:12:21,965 INFO L226 Difference]: Without dead ends: 25 [2025-03-03 09:12:21,965 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-03 09:12:21,966 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 2 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 09:12:21,966 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 45 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 09:12:21,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2025-03-03 09:12:21,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2025-03-03 09:12:21,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-03 09:12:21,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2025-03-03 09:12:21,969 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 30 transitions. Word has length 29 [2025-03-03 09:12:21,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:12:21,969 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 30 transitions. [2025-03-03 09:12:21,969 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2025-03-03 09:12:21,969 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 30 transitions. [2025-03-03 09:12:21,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-03-03 09:12:21,969 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:12:21,970 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:12:21,976 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-03 09:12:22,174 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:12:22,174 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:12:22,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:12:22,175 INFO L85 PathProgramCache]: Analyzing trace with hash 823687979, now seen corresponding path program 1 times [2025-03-03 09:12:22,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:12:22,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572971018] [2025-03-03 09:12:22,175 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:12:22,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:12:22,190 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-03-03 09:12:22,194 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-03-03 09:12:22,196 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:12:22,196 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:12:22,279 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2025-03-03 09:12:22,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:12:22,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572971018] [2025-03-03 09:12:22,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572971018] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 09:12:22,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [64562369] [2025-03-03 09:12:22,279 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:12:22,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:12:22,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 09:12:22,283 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) [2025-03-03 09:12:22,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-03 09:12:22,320 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-03-03 09:12:22,352 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-03-03 09:12:22,352 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:12:22,352 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:12:22,353 INFO L256 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-03 09:12:22,354 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 09:12:22,365 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-03-03 09:12:22,367 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 09:12:22,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [64562369] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 09:12:22,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 09:12:22,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2025-03-03 09:12:22,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531896880] [2025-03-03 09:12:22,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 09:12:22,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 09:12:22,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:12:22,369 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 09:12:22,370 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-03 09:12:22,370 INFO L87 Difference]: Start difference. First operand 24 states and 30 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-03-03 09:12:22,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:12:22,380 INFO L93 Difference]: Finished difference Result 39 states and 48 transitions. [2025-03-03 09:12:22,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 09:12:22,380 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 38 [2025-03-03 09:12:22,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:12:22,381 INFO L225 Difference]: With dead ends: 39 [2025-03-03 09:12:22,382 INFO L226 Difference]: Without dead ends: 25 [2025-03-03 09:12:22,382 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-03 09:12:22,383 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 09:12:22,384 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 49 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 09:12:22,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2025-03-03 09:12:22,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2025-03-03 09:12:22,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-03 09:12:22,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2025-03-03 09:12:22,389 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 31 transitions. Word has length 38 [2025-03-03 09:12:22,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:12:22,391 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 31 transitions. [2025-03-03 09:12:22,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-03-03 09:12:22,391 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2025-03-03 09:12:22,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2025-03-03 09:12:22,393 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:12:22,393 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:12:22,399 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-03 09:12:22,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2025-03-03 09:12:22,597 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:12:22,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:12:22,598 INFO L85 PathProgramCache]: Analyzing trace with hash 691853118, now seen corresponding path program 1 times [2025-03-03 09:12:22,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:12:22,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310495967] [2025-03-03 09:12:22,600 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:12:22,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:12:22,608 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-03-03 09:12:22,611 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-03-03 09:12:22,611 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:12:22,611 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:12:22,679 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-03-03 09:12:22,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:12:22,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310495967] [2025-03-03 09:12:22,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310495967] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 09:12:22,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1582349668] [2025-03-03 09:12:22,680 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:12:22,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:12:22,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 09:12:22,683 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) [2025-03-03 09:12:22,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-03 09:12:22,730 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-03-03 09:12:22,752 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-03-03 09:12:22,752 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:12:22,752 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:12:22,753 INFO L256 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-03 09:12:22,754 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 09:12:22,768 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2025-03-03 09:12:22,770 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 09:12:22,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1582349668] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 09:12:22,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 09:12:22,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2025-03-03 09:12:22,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557890396] [2025-03-03 09:12:22,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 09:12:22,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 09:12:22,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:12:22,772 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 09:12:22,772 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-03 09:12:22,772 INFO L87 Difference]: Start difference. First operand 25 states and 31 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2025-03-03 09:12:22,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:12:22,782 INFO L93 Difference]: Finished difference Result 48 states and 64 transitions. [2025-03-03 09:12:22,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 09:12:22,783 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 39 [2025-03-03 09:12:22,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:12:22,783 INFO L225 Difference]: With dead ends: 48 [2025-03-03 09:12:22,783 INFO L226 Difference]: Without dead ends: 29 [2025-03-03 09:12:22,784 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-03 09:12:22,784 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 09:12:22,784 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 09:12:22,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2025-03-03 09:12:22,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2025-03-03 09:12:22,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 24 states have internal predecessors, (31), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-03 09:12:22,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 37 transitions. [2025-03-03 09:12:22,792 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 37 transitions. Word has length 39 [2025-03-03 09:12:22,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:12:22,792 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 37 transitions. [2025-03-03 09:12:22,792 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2025-03-03 09:12:22,792 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 37 transitions. [2025-03-03 09:12:22,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2025-03-03 09:12:22,793 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:12:22,793 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:12:22,800 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-03 09:12:22,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:12:22,993 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:12:22,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:12:22,994 INFO L85 PathProgramCache]: Analyzing trace with hash -531326629, now seen corresponding path program 1 times [2025-03-03 09:12:22,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:12:22,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349815235] [2025-03-03 09:12:22,994 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:12:22,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:12:23,006 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-03-03 09:12:23,010 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-03-03 09:12:23,010 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:12:23,011 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:12:23,050 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-03-03 09:12:23,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:12:23,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349815235] [2025-03-03 09:12:23,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349815235] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 09:12:23,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1880793377] [2025-03-03 09:12:23,050 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:12:23,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:12:23,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 09:12:23,052 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) [2025-03-03 09:12:23,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-03 09:12:23,088 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-03-03 09:12:23,114 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-03-03 09:12:23,114 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:12:23,114 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:12:23,115 INFO L256 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-03 09:12:23,116 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 09:12:23,135 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-03-03 09:12:23,135 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 09:12:23,172 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-03-03 09:12:23,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1880793377] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 09:12:23,173 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 09:12:23,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-03-03 09:12:23,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528414210] [2025-03-03 09:12:23,173 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 09:12:23,173 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-03 09:12:23,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:12:23,173 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-03 09:12:23,174 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-03-03 09:12:23,174 INFO L87 Difference]: Start difference. First operand 29 states and 37 transitions. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2025-03-03 09:12:23,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:12:23,186 INFO L93 Difference]: Finished difference Result 57 states and 75 transitions. [2025-03-03 09:12:23,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-03 09:12:23,186 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 39 [2025-03-03 09:12:23,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:12:23,186 INFO L225 Difference]: With dead ends: 57 [2025-03-03 09:12:23,186 INFO L226 Difference]: Without dead ends: 32 [2025-03-03 09:12:23,187 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-03-03 09:12:23,187 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 09:12:23,187 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 72 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 09:12:23,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2025-03-03 09:12:23,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2025-03-03 09:12:23,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 27 states have internal predecessors, (34), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-03 09:12:23,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2025-03-03 09:12:23,190 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 39 [2025-03-03 09:12:23,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:12:23,190 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2025-03-03 09:12:23,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2025-03-03 09:12:23,190 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2025-03-03 09:12:23,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2025-03-03 09:12:23,191 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:12:23,191 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:12:23,196 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-03 09:12:23,391 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:12:23,391 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:12:23,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:12:23,392 INFO L85 PathProgramCache]: Analyzing trace with hash 496520842, now seen corresponding path program 2 times [2025-03-03 09:12:23,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:12:23,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921855530] [2025-03-03 09:12:23,392 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-03 09:12:23,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:12:23,401 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 42 statements into 2 equivalence classes. [2025-03-03 09:12:23,406 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 42 of 42 statements. [2025-03-03 09:12:23,406 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-03 09:12:23,406 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:12:23,437 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-03-03 09:12:23,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:12:23,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921855530] [2025-03-03 09:12:23,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921855530] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 09:12:23,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279620834] [2025-03-03 09:12:23,439 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-03 09:12:23,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:12:23,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 09:12:23,441 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) [2025-03-03 09:12:23,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-03 09:12:23,484 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 42 statements into 2 equivalence classes. [2025-03-03 09:12:23,502 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 42 of 42 statements. [2025-03-03 09:12:23,502 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-03 09:12:23,502 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:12:23,503 INFO L256 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-03 09:12:23,504 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 09:12:23,555 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-03-03 09:12:23,555 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 09:12:23,598 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-03-03 09:12:23,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1279620834] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 09:12:23,598 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 09:12:23,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 9 [2025-03-03 09:12:23,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137665532] [2025-03-03 09:12:23,598 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 09:12:23,599 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-03 09:12:23,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:12:23,599 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-03 09:12:23,599 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2025-03-03 09:12:23,599 INFO L87 Difference]: Start difference. First operand 32 states and 40 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-03 09:12:23,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:12:23,634 INFO L93 Difference]: Finished difference Result 62 states and 83 transitions. [2025-03-03 09:12:23,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-03 09:12:23,636 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) Word has length 42 [2025-03-03 09:12:23,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:12:23,636 INFO L225 Difference]: With dead ends: 62 [2025-03-03 09:12:23,636 INFO L226 Difference]: Without dead ends: 37 [2025-03-03 09:12:23,636 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 74 SyntacticMatches, 5 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2025-03-03 09:12:23,637 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 2 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 09:12:23,637 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 103 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 09:12:23,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2025-03-03 09:12:23,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2025-03-03 09:12:23,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 31 states have internal predecessors, (38), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-03 09:12:23,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2025-03-03 09:12:23,640 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 42 [2025-03-03 09:12:23,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:12:23,640 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2025-03-03 09:12:23,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-03 09:12:23,640 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2025-03-03 09:12:23,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2025-03-03 09:12:23,641 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:12:23,641 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:12:23,647 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-03 09:12:23,841 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:12:23,841 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:12:23,842 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:12:23,842 INFO L85 PathProgramCache]: Analyzing trace with hash 596360352, now seen corresponding path program 3 times [2025-03-03 09:12:23,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:12:23,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399074490] [2025-03-03 09:12:23,842 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-03 09:12:23,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:12:23,854 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 52 statements into 6 equivalence classes. [2025-03-03 09:12:23,861 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 26 of 52 statements. [2025-03-03 09:12:23,861 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-03 09:12:23,861 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:12:23,883 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2025-03-03 09:12:23,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:12:23,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399074490] [2025-03-03 09:12:23,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399074490] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 09:12:23,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 09:12:23,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 09:12:23,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656766757] [2025-03-03 09:12:23,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 09:12:23,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 09:12:23,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:12:23,884 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 09:12:23,884 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-03 09:12:23,884 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2025-03-03 09:12:23,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:12:23,901 INFO L93 Difference]: Finished difference Result 65 states and 84 transitions. [2025-03-03 09:12:23,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 09:12:23,903 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 52 [2025-03-03 09:12:23,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:12:23,904 INFO L225 Difference]: With dead ends: 65 [2025-03-03 09:12:23,904 INFO L226 Difference]: Without dead ends: 39 [2025-03-03 09:12:23,904 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-03 09:12:23,905 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 3 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 09:12:23,905 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 65 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 09:12:23,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2025-03-03 09:12:23,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 34. [2025-03-03 09:12:23,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 29 states have internal predecessors, (34), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-03 09:12:23,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2025-03-03 09:12:23,910 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 52 [2025-03-03 09:12:23,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:12:23,911 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2025-03-03 09:12:23,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2025-03-03 09:12:23,911 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2025-03-03 09:12:23,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2025-03-03 09:12:23,911 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:12:23,911 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 6, 5, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:12:23,911 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-03 09:12:23,912 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:12:23,912 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:12:23,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1797363035, now seen corresponding path program 1 times [2025-03-03 09:12:23,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:12:23,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957301828] [2025-03-03 09:12:23,912 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:12:23,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:12:23,923 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 61 statements into 1 equivalence classes. [2025-03-03 09:12:23,933 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 61 of 61 statements. [2025-03-03 09:12:23,934 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:12:23,934 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:12:23,997 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2025-03-03 09:12:23,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:12:23,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957301828] [2025-03-03 09:12:23,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957301828] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 09:12:23,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965229020] [2025-03-03 09:12:23,997 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:12:23,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:12:23,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 09:12:24,000 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) [2025-03-03 09:12:24,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-03 09:12:24,044 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 61 statements into 1 equivalence classes. [2025-03-03 09:12:24,067 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 61 of 61 statements. [2025-03-03 09:12:24,067 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:12:24,067 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:12:24,068 INFO L256 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-03 09:12:24,070 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 09:12:24,092 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 61 proven. 7 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2025-03-03 09:12:24,092 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 09:12:24,118 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 5 proven. 81 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2025-03-03 09:12:24,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965229020] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 09:12:24,118 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 09:12:24,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 7 [2025-03-03 09:12:24,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237568196] [2025-03-03 09:12:24,118 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 09:12:24,118 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-03 09:12:24,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:12:24,119 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-03 09:12:24,119 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-03-03 09:12:24,119 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-03 09:12:24,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:12:24,146 INFO L93 Difference]: Finished difference Result 62 states and 77 transitions. [2025-03-03 09:12:24,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-03 09:12:24,146 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 61 [2025-03-03 09:12:24,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:12:24,147 INFO L225 Difference]: With dead ends: 62 [2025-03-03 09:12:24,147 INFO L226 Difference]: Without dead ends: 38 [2025-03-03 09:12:24,147 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 117 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-03-03 09:12:24,147 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 1 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 09:12:24,149 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 83 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 09:12:24,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2025-03-03 09:12:24,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2025-03-03 09:12:24,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 33 states have internal predecessors, (38), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-03 09:12:24,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2025-03-03 09:12:24,152 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 61 [2025-03-03 09:12:24,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:12:24,152 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2025-03-03 09:12:24,152 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-03 09:12:24,152 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2025-03-03 09:12:24,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2025-03-03 09:12:24,153 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:12:24,153 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 9, 5, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:12:24,159 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-03-03 09:12:24,358 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:12:24,358 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:12:24,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:12:24,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1125292143, now seen corresponding path program 2 times [2025-03-03 09:12:24,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:12:24,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386799186] [2025-03-03 09:12:24,359 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-03 09:12:24,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:12:24,370 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 71 statements into 2 equivalence classes. [2025-03-03 09:12:24,392 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 71 of 71 statements. [2025-03-03 09:12:24,392 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-03 09:12:24,392 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:12:24,470 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2025-03-03 09:12:24,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:12:24,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386799186] [2025-03-03 09:12:24,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386799186] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 09:12:24,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648492973] [2025-03-03 09:12:24,471 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-03 09:12:24,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:12:24,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 09:12:24,473 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) [2025-03-03 09:12:24,474 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-03 09:12:24,527 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 71 statements into 2 equivalence classes. [2025-03-03 09:12:24,555 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 71 of 71 statements. [2025-03-03 09:12:24,555 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-03 09:12:24,556 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:12:24,557 INFO L256 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-03 09:12:24,558 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 09:12:24,598 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 116 proven. 22 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2025-03-03 09:12:24,598 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 09:12:24,648 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2025-03-03 09:12:24,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [648492973] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 09:12:24,648 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 09:12:24,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 10 [2025-03-03 09:12:24,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386280151] [2025-03-03 09:12:24,649 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 09:12:24,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-03 09:12:24,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:12:24,649 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-03 09:12:24,649 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2025-03-03 09:12:24,650 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand has 10 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-03 09:12:24,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:12:24,692 INFO L93 Difference]: Finished difference Result 70 states and 86 transitions. [2025-03-03 09:12:24,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-03 09:12:24,692 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 71 [2025-03-03 09:12:24,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:12:24,693 INFO L225 Difference]: With dead ends: 70 [2025-03-03 09:12:24,694 INFO L226 Difference]: Without dead ends: 42 [2025-03-03 09:12:24,694 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 132 SyntacticMatches, 5 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2025-03-03 09:12:24,694 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 2 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 09:12:24,696 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 159 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 09:12:24,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2025-03-03 09:12:24,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2025-03-03 09:12:24,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 37 states have (on average 1.162162162162162) internal successors, (43), 37 states have internal predecessors, (43), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-03 09:12:24,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2025-03-03 09:12:24,701 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 71 [2025-03-03 09:12:24,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:12:24,703 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2025-03-03 09:12:24,703 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-03 09:12:24,703 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2025-03-03 09:12:24,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2025-03-03 09:12:24,704 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:12:24,704 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 9, 6, 5, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:12:24,716 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-03 09:12:24,904 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:12:24,905 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:12:24,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:12:24,905 INFO L85 PathProgramCache]: Analyzing trace with hash 2054975806, now seen corresponding path program 3 times [2025-03-03 09:12:24,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:12:24,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090745644] [2025-03-03 09:12:24,905 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-03 09:12:24,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:12:24,921 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 81 statements into 12 equivalence classes. [2025-03-03 09:12:24,965 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 44 of 81 statements. [2025-03-03 09:12:24,965 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-03-03 09:12:24,965 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:12:25,031 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2025-03-03 09:12:25,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:12:25,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090745644] [2025-03-03 09:12:25,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090745644] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 09:12:25,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958601995] [2025-03-03 09:12:25,032 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-03 09:12:25,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:12:25,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 09:12:25,034 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) [2025-03-03 09:12:25,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-03 09:12:25,082 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 81 statements into 12 equivalence classes. [2025-03-03 09:12:25,113 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 44 of 81 statements. [2025-03-03 09:12:25,113 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-03-03 09:12:25,113 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:12:25,114 INFO L256 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-03 09:12:25,115 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 09:12:25,132 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 180 proven. 6 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2025-03-03 09:12:25,132 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 09:12:25,159 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2025-03-03 09:12:25,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [958601995] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 09:12:25,159 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 09:12:25,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 7 [2025-03-03 09:12:25,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892058488] [2025-03-03 09:12:25,159 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 09:12:25,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-03 09:12:25,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:12:25,159 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-03 09:12:25,160 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-03-03 09:12:25,160 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-03-03 09:12:25,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:12:25,172 INFO L93 Difference]: Finished difference Result 68 states and 79 transitions. [2025-03-03 09:12:25,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-03 09:12:25,172 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 81 [2025-03-03 09:12:25,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:12:25,174 INFO L225 Difference]: With dead ends: 68 [2025-03-03 09:12:25,174 INFO L226 Difference]: Without dead ends: 43 [2025-03-03 09:12:25,174 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 157 SyntacticMatches, 4 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-03-03 09:12:25,175 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 49 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 [2025-03-03 09:12:25,175 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 49 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 09:12:25,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2025-03-03 09:12:25,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2025-03-03 09:12:25,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 38 states have (on average 1.1578947368421053) internal successors, (44), 38 states have internal predecessors, (44), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-03 09:12:25,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2025-03-03 09:12:25,181 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 81 [2025-03-03 09:12:25,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:12:25,181 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2025-03-03 09:12:25,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-03-03 09:12:25,181 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2025-03-03 09:12:25,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2025-03-03 09:12:25,182 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:12:25,182 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 9, 6, 5, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:12:25,189 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-03-03 09:12:25,382 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,SelfDestructingSolverStorable9 [2025-03-03 09:12:25,382 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:12:25,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:12:25,383 INFO L85 PathProgramCache]: Analyzing trace with hash -71916341, now seen corresponding path program 4 times [2025-03-03 09:12:25,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:12:25,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598978369] [2025-03-03 09:12:25,383 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-03 09:12:25,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:12:25,393 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 82 statements into 2 equivalence classes. [2025-03-03 09:12:25,495 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 82 of 82 statements. [2025-03-03 09:12:25,495 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-03 09:12:25,495 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-03 09:12:25,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1505079885] [2025-03-03 09:12:25,501 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-03 09:12:25,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:12:25,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 09:12:25,503 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) [2025-03-03 09:12:25,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-03 09:12:25,548 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 82 statements into 2 equivalence classes. [2025-03-03 09:12:25,730 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 82 of 82 statements. [2025-03-03 09:12:25,730 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-03 09:12:25,730 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-03 09:12:25,730 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-03 09:12:25,758 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 82 statements into 1 equivalence classes. [2025-03-03 09:12:25,823 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 82 of 82 statements. [2025-03-03 09:12:25,824 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:12:25,824 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-03 09:12:25,854 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-03 09:12:25,854 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-03 09:12:25,855 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-03-03 09:12:25,864 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-03-03 09:12:26,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:12:26,059 INFO L422 BasicCegarLoop]: Path program histogram: [4, 3, 1, 1, 1, 1] [2025-03-03 09:12:26,104 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-03 09:12:26,105 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.03 09:12:26 BoogieIcfgContainer [2025-03-03 09:12:26,105 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-03 09:12:26,106 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-03 09:12:26,106 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-03 09:12:26,106 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-03 09:12:26,107 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 09:12:21" (3/4) ... [2025-03-03 09:12:26,107 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2025-03-03 09:12:26,160 INFO L127 tionWitnessGenerator]: Generated YAML witness of length 57. [2025-03-03 09:12:26,237 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-03 09:12:26,238 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-03 09:12:26,238 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-03 09:12:26,238 INFO L158 Benchmark]: Toolchain (without parser) took 5399.95ms. Allocated memory is still 142.6MB. Free memory was 106.8MB in the beginning and 90.9MB in the end (delta: 15.9MB). Peak memory consumption was 18.7MB. Max. memory is 16.1GB. [2025-03-03 09:12:26,238 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 167.8MB. Free memory is still 94.2MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-03 09:12:26,238 INFO L158 Benchmark]: CACSL2BoogieTranslator took 184.01ms. Allocated memory is still 142.6MB. Free memory was 106.8MB in the beginning and 95.3MB in the end (delta: 11.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-03 09:12:26,238 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.51ms. Allocated memory is still 142.6MB. Free memory was 95.3MB in the beginning and 94.2MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-03 09:12:26,239 INFO L158 Benchmark]: Boogie Preprocessor took 22.75ms. Allocated memory is still 142.6MB. Free memory was 94.2MB in the beginning and 93.1MB in the end (delta: 1.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-03 09:12:26,239 INFO L158 Benchmark]: IcfgBuilder took 222.30ms. Allocated memory is still 142.6MB. Free memory was 93.1MB in the beginning and 79.5MB in the end (delta: 13.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-03 09:12:26,239 INFO L158 Benchmark]: TraceAbstraction took 4811.70ms. Allocated memory is still 142.6MB. Free memory was 79.5MB in the beginning and 100.6MB in the end (delta: -21.1MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-03 09:12:26,239 INFO L158 Benchmark]: Witness Printer took 131.75ms. Allocated memory is still 142.6MB. Free memory was 100.6MB in the beginning and 90.9MB in the end (delta: 9.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-03 09:12:26,240 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 167.8MB. Free memory is still 94.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 184.01ms. Allocated memory is still 142.6MB. Free memory was 106.8MB in the beginning and 95.3MB in the end (delta: 11.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.51ms. Allocated memory is still 142.6MB. Free memory was 95.3MB in the beginning and 94.2MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 22.75ms. Allocated memory is still 142.6MB. Free memory was 94.2MB in the beginning and 93.1MB in the end (delta: 1.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * IcfgBuilder took 222.30ms. Allocated memory is still 142.6MB. Free memory was 93.1MB in the beginning and 79.5MB in the end (delta: 13.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 4811.70ms. Allocated memory is still 142.6MB. Free memory was 79.5MB in the beginning and 100.6MB in the end (delta: -21.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 131.75ms. Allocated memory is still 142.6MB. Free memory was 100.6MB in the beginning and 90.9MB in the end (delta: 9.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 61]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L42] int x[5]; [L43] CALL init_nondet(x) [L16] int i; [L17] i = 0 VAL [i=0, x={3:0}] [L17] COND TRUE i < 5 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=1, x={3:0}] [L17] COND TRUE i < 5 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=2, x={3:0}] [L17] COND TRUE i < 5 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=3, x={3:0}] [L17] COND TRUE i < 5 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=4, x={3:0}] [L17] COND TRUE i < 5 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=5, x={3:0}] [L17] COND FALSE !(i < 5) [L43] RET init_nondet(x) [L44] int temp; [L45] int ret; [L46] int ret2; [L47] int ret5; VAL [x={3:0}] [L49] CALL, EXPR rangesum(x) VAL [\old(x)={3:0}] [L24] int i; [L25] long long ret; [L26] ret = 0 [L27] int cnt = 0; [L28] i = 0 VAL [\old(x)={3:0}, cnt=0, i=0, ret=0, x={3:0}] [L28] COND TRUE i < 5 VAL [\old(x)={3:0}, cnt=0, i=0, ret=0, x={3:0}] [L29] COND FALSE !(i > 5/2) VAL [\old(x)={3:0}, cnt=0, i=0, ret=0, x={3:0}] [L28] i++ VAL [\old(x)={3:0}, cnt=0, i=1, ret=0, x={3:0}] [L28] COND TRUE i < 5 VAL [\old(x)={3:0}, cnt=0, i=1, ret=0, x={3:0}] [L29] COND FALSE !(i > 5/2) VAL [\old(x)={3:0}, cnt=0, i=1, ret=0, x={3:0}] [L28] i++ VAL [\old(x)={3:0}, cnt=0, i=2, ret=0, x={3:0}] [L28] COND TRUE i < 5 VAL [\old(x)={3:0}, cnt=0, i=2, ret=0, x={3:0}] [L29] COND FALSE !(i > 5/2) VAL [\old(x)={3:0}, cnt=0, i=2, ret=0, x={3:0}] [L28] i++ VAL [\old(x)={3:0}, cnt=0, i=3, ret=0, x={3:0}] [L28] COND TRUE i < 5 VAL [\old(x)={3:0}, cnt=0, i=3, ret=0, x={3:0}] [L29] COND TRUE i > 5/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [\old(x)={3:0}, cnt=1, i=3, ret=2147483646, x={3:0}] [L28] i++ VAL [\old(x)={3:0}, cnt=1, i=4, ret=2147483646, x={3:0}] [L28] COND TRUE i < 5 VAL [\old(x)={3:0}, cnt=1, i=4, ret=2147483646, x={3:0}] [L29] COND TRUE i > 5/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [\old(x)={3:0}, cnt=2, i=4, ret=4294967293, x={3:0}] [L28] i++ VAL [\old(x)={3:0}, cnt=2, i=5, ret=4294967293, x={3:0}] [L28] COND FALSE !(i < 5) VAL [\old(x)={3:0}, cnt=2, ret=4294967293, x={3:0}] [L34] COND TRUE cnt !=0 [L35] return ret / cnt; VAL [\old(x)={3:0}, \result=2147483646, x={3:0}] [L49] RET, EXPR rangesum(x) VAL [x={3:0}] [L49] ret = rangesum(x) [L51] EXPR x[0] [L51] temp=x[0] [L51] EXPR x[1] [L51] x[0] = x[1] [L51] x[1] = temp [L52] CALL, EXPR rangesum(x) VAL [\old(x)={3:0}] [L24] int i; [L25] long long ret; [L26] ret = 0 [L27] int cnt = 0; [L28] i = 0 VAL [\old(x)={3:0}, cnt=0, i=0, ret=0, x={3:0}] [L28] COND TRUE i < 5 VAL [\old(x)={3:0}, cnt=0, i=0, ret=0, x={3:0}] [L29] COND FALSE !(i > 5/2) VAL [\old(x)={3:0}, cnt=0, i=0, ret=0, x={3:0}] [L28] i++ VAL [\old(x)={3:0}, cnt=0, i=1, ret=0, x={3:0}] [L28] COND TRUE i < 5 VAL [\old(x)={3:0}, cnt=0, i=1, ret=0, x={3:0}] [L29] COND FALSE !(i > 5/2) VAL [\old(x)={3:0}, cnt=0, i=1, ret=0, x={3:0}] [L28] i++ VAL [\old(x)={3:0}, cnt=0, i=2, ret=0, x={3:0}] [L28] COND TRUE i < 5 VAL [\old(x)={3:0}, cnt=0, i=2, ret=0, x={3:0}] [L29] COND FALSE !(i > 5/2) VAL [\old(x)={3:0}, cnt=0, i=2, ret=0, x={3:0}] [L28] i++ VAL [\old(x)={3:0}, cnt=0, i=3, ret=0, x={3:0}] [L28] COND TRUE i < 5 VAL [\old(x)={3:0}, cnt=0, i=3, ret=0, x={3:0}] [L29] COND TRUE i > 5/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [\old(x)={3:0}, cnt=1, i=3, ret=2147483646, x={3:0}] [L28] i++ VAL [\old(x)={3:0}, cnt=1, i=4, ret=2147483646, x={3:0}] [L28] COND TRUE i < 5 VAL [\old(x)={3:0}, cnt=1, i=4, ret=2147483646, x={3:0}] [L29] COND TRUE i > 5/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [\old(x)={3:0}, cnt=2, i=4, ret=4294967293, x={3:0}] [L28] i++ VAL [\old(x)={3:0}, cnt=2, i=5, ret=4294967293, x={3:0}] [L28] COND FALSE !(i < 5) VAL [\old(x)={3:0}, cnt=2, ret=4294967293, x={3:0}] [L34] COND TRUE cnt !=0 [L35] return ret / cnt; VAL [\old(x)={3:0}, \result=2147483646, x={3:0}] [L52] RET, EXPR rangesum(x) VAL [ret=2147483646, x={3:0}] [L52] ret2 = rangesum(x) [L53] EXPR x[0] [L53] temp=x[0] [L54] int i =0 ; VAL [i=0, ret2=2147483646, ret=2147483646, temp=-2147483644, x={3:0}] [L54] COND TRUE i<5 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=1, ret2=2147483646, ret=2147483646, temp=-2147483644, x={3:0}] [L54] COND TRUE i<5 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=2, ret2=2147483646, ret=2147483646, temp=-2147483644, x={3:0}] [L54] COND TRUE i<5 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=3, ret2=2147483646, ret=2147483646, temp=-2147483644, x={3:0}] [L54] COND TRUE i<5 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=4, ret2=2147483646, ret=2147483646, temp=-2147483644, x={3:0}] [L54] COND FALSE !(i<5 -1) [L57] x[5 -1] = temp [L58] CALL, EXPR rangesum(x) VAL [\old(x)={3:0}] [L24] int i; [L25] long long ret; [L26] ret = 0 [L27] int cnt = 0; [L28] i = 0 VAL [\old(x)={3:0}, cnt=0, i=0, ret=0, x={3:0}] [L28] COND TRUE i < 5 VAL [\old(x)={3:0}, cnt=0, i=0, ret=0, x={3:0}] [L29] COND FALSE !(i > 5/2) VAL [\old(x)={3:0}, cnt=0, i=0, ret=0, x={3:0}] [L28] i++ VAL [\old(x)={3:0}, cnt=0, i=1, ret=0, x={3:0}] [L28] COND TRUE i < 5 VAL [\old(x)={3:0}, cnt=0, i=1, ret=0, x={3:0}] [L29] COND FALSE !(i > 5/2) VAL [\old(x)={3:0}, cnt=0, i=1, ret=0, x={3:0}] [L28] i++ VAL [\old(x)={3:0}, cnt=0, i=2, ret=0, x={3:0}] [L28] COND TRUE i < 5 VAL [\old(x)={3:0}, cnt=0, i=2, ret=0, x={3:0}] [L29] COND FALSE !(i > 5/2) VAL [\old(x)={3:0}, cnt=0, i=2, ret=0, x={3:0}] [L28] i++ VAL [\old(x)={3:0}, cnt=0, i=3, ret=0, x={3:0}] [L28] COND TRUE i < 5 VAL [\old(x)={3:0}, cnt=0, i=3, ret=0, x={3:0}] [L29] COND TRUE i > 5/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [\old(x)={3:0}, cnt=1, i=3, ret=2147483647, x={3:0}] [L28] i++ VAL [\old(x)={3:0}, cnt=1, i=4, ret=2147483647, x={3:0}] [L28] COND TRUE i < 5 VAL [\old(x)={3:0}, cnt=1, i=4, ret=2147483647, x={3:0}] [L29] COND TRUE i > 5/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [\old(x)={3:0}, cnt=2, i=4, ret=3, x={3:0}] [L28] i++ VAL [\old(x)={3:0}, cnt=2, i=5, ret=3, x={3:0}] [L28] COND FALSE !(i < 5) VAL [\old(x)={3:0}, cnt=2, ret=3, x={3:0}] [L34] COND TRUE cnt !=0 [L35] return ret / cnt; VAL [\old(x)={3:0}, \result=1, x={3:0}] [L58] RET, EXPR rangesum(x) VAL [ret2=2147483646, ret=2147483646, x={3:0}] [L58] ret5 = rangesum(x) [L60] COND TRUE ret != ret2 || ret !=ret5 VAL [x={3:0}] [L61] reach_error() VAL [x={3:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.7s, OverallIterations: 11, TraceHistogramMax: 15, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 10 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 10 mSDsluCounter, 730 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 482 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 159 IncrementalHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 248 mSDtfsCounter, 159 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 723 GetRequests, 665 SyntacticMatches, 16 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=10, InterpolantAutomatonStates: 54, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 7 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 1044 NumberOfCodeBlocks, 944 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 1151 ConstructedInterpolants, 0 QuantifiedInterpolants, 1341 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1557 ConjunctsInSsa, 31 ConjunctsInUnsatCore, 23 InterpolantComputations, 5 PerfectInterpolantSequences, 2684/3003 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2025-03-03 09:12:26,258 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE