./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-examples/sorting_bubblesort_ground-1.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/array-examples/sorting_bubblesort_ground-1.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 68585835b92043bfb2f3c62590e96ff685993869f8a251aecd9fe4c8aaea0e1e --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-03 08:58:54,409 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-03 08:58:54,469 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-03 08:58:54,474 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-03 08:58:54,477 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-03 08:58:54,498 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-03 08:58:54,500 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-03 08:58:54,500 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-03 08:58:54,500 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-03 08:58:54,500 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-03 08:58:54,501 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-03 08:58:54,501 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-03 08:58:54,501 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-03 08:58:54,501 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-03 08:58:54,501 INFO L153 SettingsManager]: * Use SBE=true [2025-03-03 08:58:54,502 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-03 08:58:54,502 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-03 08:58:54,502 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-03 08:58:54,502 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-03 08:58:54,502 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-03 08:58:54,502 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-03 08:58:54,502 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-03 08:58:54,502 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-03 08:58:54,503 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-03 08:58:54,503 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-03 08:58:54,503 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-03 08:58:54,503 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-03 08:58:54,503 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-03 08:58:54,503 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-03 08:58:54,503 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-03 08:58:54,503 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-03 08:58:54,503 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-03 08:58:54,503 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 08:58:54,503 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-03 08:58:54,504 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-03 08:58:54,504 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-03 08:58:54,504 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-03 08:58:54,504 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-03 08:58:54,504 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-03 08:58:54,504 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-03 08:58:54,504 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-03 08:58:54,504 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-03 08:58:54,505 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-03 08:58:54,505 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 -> 68585835b92043bfb2f3c62590e96ff685993869f8a251aecd9fe4c8aaea0e1e [2025-03-03 08:58:54,713 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-03 08:58:54,721 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-03 08:58:54,723 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-03 08:58:54,723 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-03 08:58:54,724 INFO L274 PluginConnector]: CDTParser initialized [2025-03-03 08:58:54,725 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/sorting_bubblesort_ground-1.i [2025-03-03 08:58:55,862 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8dd903bc4/ac3176e40235427ab421ddbfbb6fe614/FLAGb1c05739f [2025-03-03 08:58:56,077 INFO L384 CDTParser]: Found 1 translation units. [2025-03-03 08:58:56,078 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/sorting_bubblesort_ground-1.i [2025-03-03 08:58:56,083 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8dd903bc4/ac3176e40235427ab421ddbfbb6fe614/FLAGb1c05739f [2025-03-03 08:58:56,430 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8dd903bc4/ac3176e40235427ab421ddbfbb6fe614 [2025-03-03 08:58:56,432 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-03 08:58:56,434 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-03 08:58:56,434 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-03 08:58:56,435 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-03 08:58:56,438 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-03 08:58:56,439 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 08:58:56" (1/1) ... [2025-03-03 08:58:56,440 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e0ea25e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 08:58:56, skipping insertion in model container [2025-03-03 08:58:56,441 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 08:58:56" (1/1) ... [2025-03-03 08:58:56,450 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-03 08:58:56,545 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/array-examples/sorting_bubblesort_ground-1.i[820,833] [2025-03-03 08:58:56,555 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 08:58:56,561 INFO L200 MainTranslator]: Completed pre-run [2025-03-03 08:58:56,568 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/array-examples/sorting_bubblesort_ground-1.i[820,833] [2025-03-03 08:58:56,575 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 08:58:56,586 INFO L204 MainTranslator]: Completed translation [2025-03-03 08:58:56,587 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 08:58:56 WrapperNode [2025-03-03 08:58:56,587 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-03 08:58:56,588 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-03 08:58:56,588 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-03 08:58:56,589 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-03 08:58:56,593 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 08:58:56" (1/1) ... [2025-03-03 08:58:56,599 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 08:58:56" (1/1) ... [2025-03-03 08:58:56,617 INFO L138 Inliner]: procedures = 16, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 70 [2025-03-03 08:58:56,617 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-03 08:58:56,618 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-03 08:58:56,618 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-03 08:58:56,618 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-03 08:58:56,622 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 08:58:56" (1/1) ... [2025-03-03 08:58:56,622 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 08:58:56" (1/1) ... [2025-03-03 08:58:56,624 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 08:58:56" (1/1) ... [2025-03-03 08:58:56,631 INFO L175 MemorySlicer]: Split 11 memory accesses to 2 slices as follows [2, 9]. 82 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2025-03-03 08:58:56,631 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 08:58:56" (1/1) ... [2025-03-03 08:58:56,631 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 08:58:56" (1/1) ... [2025-03-03 08:58:56,635 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 08:58:56" (1/1) ... [2025-03-03 08:58:56,638 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 08:58:56" (1/1) ... [2025-03-03 08:58:56,638 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 08:58:56" (1/1) ... [2025-03-03 08:58:56,639 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 08:58:56" (1/1) ... [2025-03-03 08:58:56,640 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-03 08:58:56,641 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-03 08:58:56,641 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-03 08:58:56,641 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-03 08:58:56,642 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 08:58:56" (1/1) ... [2025-03-03 08:58:56,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 08:58:56,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 08:58:56,665 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 08:58:56,667 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 08:58:56,683 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-03 08:58:56,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-03 08:58:56,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-03 08:58:56,683 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-03 08:58:56,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-03 08:58:56,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-03 08:58:56,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-03 08:58:56,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-03 08:58:56,683 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-03 08:58:56,683 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-03 08:58:56,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-03 08:58:56,724 INFO L256 CfgBuilder]: Building ICFG [2025-03-03 08:58:56,726 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-03 08:58:56,821 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L17: call ULTIMATE.dealloc(main_~#a~0#1.base, main_~#a~0#1.offset);havoc main_~#a~0#1.base, main_~#a~0#1.offset; [2025-03-03 08:58:56,825 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2025-03-03 08:58:56,825 INFO L307 CfgBuilder]: Performing block encoding [2025-03-03 08:58:56,830 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-03 08:58:56,830 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-03 08:58:56,831 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 08:58:56 BoogieIcfgContainer [2025-03-03 08:58:56,831 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-03 08:58:56,832 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-03 08:58:56,832 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-03 08:58:56,835 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-03 08:58:56,835 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 08:58:56" (1/3) ... [2025-03-03 08:58:56,835 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49bb5e74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 08:58:56, skipping insertion in model container [2025-03-03 08:58:56,835 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 08:58:56" (2/3) ... [2025-03-03 08:58:56,836 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49bb5e74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 08:58:56, skipping insertion in model container [2025-03-03 08:58:56,836 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 08:58:56" (3/3) ... [2025-03-03 08:58:56,836 INFO L128 eAbstractionObserver]: Analyzing ICFG sorting_bubblesort_ground-1.i [2025-03-03 08:58:56,846 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-03 08:58:56,847 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG sorting_bubblesort_ground-1.i that has 1 procedures, 16 locations, 1 initial locations, 5 loop locations, and 1 error locations. [2025-03-03 08:58:56,885 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-03 08:58:56,895 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;@14a9217b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-03 08:58:56,895 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-03 08:58:56,898 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 15 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 08:58:56,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-03-03 08:58:56,902 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 08:58:56,903 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 08:58:56,903 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 08:58:56,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 08:58:56,907 INFO L85 PathProgramCache]: Analyzing trace with hash -107250953, now seen corresponding path program 1 times [2025-03-03 08:58:56,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 08:58:56,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862186037] [2025-03-03 08:58:56,913 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 08:58:56,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 08:58:56,958 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-03 08:58:56,970 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-03 08:58:56,971 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 08:58:56,971 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 08:58:57,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 08:58:57,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 08:58:57,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862186037] [2025-03-03 08:58:57,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862186037] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 08:58:57,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 08:58:57,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 08:58:57,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841537963] [2025-03-03 08:58:57,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 08:58:57,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 08:58:57,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 08:58:57,068 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 08:58:57,069 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 08:58:57,070 INFO L87 Difference]: Start difference. First operand has 16 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 15 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 08:58:57,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 08:58:57,086 INFO L93 Difference]: Finished difference Result 30 states and 42 transitions. [2025-03-03 08:58:57,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 08:58:57,088 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2025-03-03 08:58:57,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 08:58:57,093 INFO L225 Difference]: With dead ends: 30 [2025-03-03 08:58:57,093 INFO L226 Difference]: Without dead ends: 14 [2025-03-03 08:58:57,095 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 08:58:57,097 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 37 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 08:58:57,097 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 37 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 08:58:57,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2025-03-03 08:58:57,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2025-03-03 08:58:57,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 13 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 08:58:57,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 19 transitions. [2025-03-03 08:58:57,115 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 19 transitions. Word has length 8 [2025-03-03 08:58:57,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 08:58:57,115 INFO L471 AbstractCegarLoop]: Abstraction has 14 states and 19 transitions. [2025-03-03 08:58:57,115 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 08:58:57,116 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 19 transitions. [2025-03-03 08:58:57,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-03-03 08:58:57,116 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 08:58:57,116 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 08:58:57,116 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-03 08:58:57,116 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 08:58:57,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 08:58:57,116 INFO L85 PathProgramCache]: Analyzing trace with hash 2059050763, now seen corresponding path program 1 times [2025-03-03 08:58:57,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 08:58:57,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643477319] [2025-03-03 08:58:57,117 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 08:58:57,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 08:58:57,125 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-03 08:58:57,131 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-03 08:58:57,131 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 08:58:57,131 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 08:58:57,179 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 08:58:57,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 08:58:57,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643477319] [2025-03-03 08:58:57,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643477319] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 08:58:57,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [716599900] [2025-03-03 08:58:57,180 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 08:58:57,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 08:58:57,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 08:58:57,184 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 08:58:57,186 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 08:58:57,227 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-03 08:58:57,241 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-03 08:58:57,242 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 08:58:57,242 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 08:58:57,243 INFO L256 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-03 08:58:57,245 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 08:58:57,259 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-03 08:58:57,259 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 08:58:57,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [716599900] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 08:58:57,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 08:58:57,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2025-03-03 08:58:57,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461405065] [2025-03-03 08:58:57,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 08:58:57,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 08:58:57,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 08:58:57,262 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 08:58:57,262 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-03 08:58:57,263 INFO L87 Difference]: Start difference. First operand 14 states and 19 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 08:58:57,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 08:58:57,274 INFO L93 Difference]: Finished difference Result 24 states and 33 transitions. [2025-03-03 08:58:57,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 08:58:57,274 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2025-03-03 08:58:57,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 08:58:57,275 INFO L225 Difference]: With dead ends: 24 [2025-03-03 08:58:57,275 INFO L226 Difference]: Without dead ends: 18 [2025-03-03 08:58:57,275 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 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 08:58:57,276 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 4 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 08:58:57,276 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 35 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 08:58:57,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2025-03-03 08:58:57,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2025-03-03 08:58:57,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 17 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 08:58:57,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 25 transitions. [2025-03-03 08:58:57,278 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 25 transitions. Word has length 9 [2025-03-03 08:58:57,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 08:58:57,278 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 25 transitions. [2025-03-03 08:58:57,278 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 08:58:57,279 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 25 transitions. [2025-03-03 08:58:57,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-03-03 08:58:57,279 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 08:58:57,279 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 08:58:57,285 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-03 08:58:57,479 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 08:58:57,480 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 08:58:57,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 08:58:57,480 INFO L85 PathProgramCache]: Analyzing trace with hash -142887568, now seen corresponding path program 1 times [2025-03-03 08:58:57,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 08:58:57,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721328373] [2025-03-03 08:58:57,480 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 08:58:57,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 08:58:57,487 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-03 08:58:57,491 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-03 08:58:57,491 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 08:58:57,492 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 08:58:57,547 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-03 08:58:57,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 08:58:57,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721328373] [2025-03-03 08:58:57,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721328373] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 08:58:57,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223710131] [2025-03-03 08:58:57,548 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 08:58:57,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 08:58:57,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 08:58:57,550 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 08:58:57,551 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 08:58:57,581 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-03 08:58:57,596 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-03 08:58:57,596 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 08:58:57,596 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 08:58:57,597 INFO L256 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-03 08:58:57,598 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 08:58:57,607 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-03 08:58:57,609 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 08:58:57,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223710131] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 08:58:57,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 08:58:57,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2025-03-03 08:58:57,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670659108] [2025-03-03 08:58:57,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 08:58:57,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 08:58:57,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 08:58:57,610 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 08:58:57,610 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-03 08:58:57,610 INFO L87 Difference]: Start difference. First operand 18 states and 25 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 08:58:57,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 08:58:57,630 INFO L93 Difference]: Finished difference Result 36 states and 51 transitions. [2025-03-03 08:58:57,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 08:58:57,630 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2025-03-03 08:58:57,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 08:58:57,631 INFO L225 Difference]: With dead ends: 36 [2025-03-03 08:58:57,631 INFO L226 Difference]: Without dead ends: 22 [2025-03-03 08:58:57,631 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 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 08:58:57,631 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 3 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 27 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 08:58:57,631 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 27 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 08:58:57,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2025-03-03 08:58:57,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 19. [2025-03-03 08:58:57,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 18 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 08:58:57,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 26 transitions. [2025-03-03 08:58:57,636 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 26 transitions. Word has length 11 [2025-03-03 08:58:57,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 08:58:57,636 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 26 transitions. [2025-03-03 08:58:57,636 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 08:58:57,636 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 26 transitions. [2025-03-03 08:58:57,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-03-03 08:58:57,636 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 08:58:57,636 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 08:58:57,643 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 08:58:57,837 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 08:58:57,837 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 08:58:57,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 08:58:57,838 INFO L85 PathProgramCache]: Analyzing trace with hash 2042697145, now seen corresponding path program 1 times [2025-03-03 08:58:57,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 08:58:57,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330247161] [2025-03-03 08:58:57,838 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 08:58:57,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 08:58:57,843 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-03 08:58:57,846 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-03 08:58:57,846 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 08:58:57,846 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 08:58:57,909 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-03 08:58:57,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 08:58:57,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330247161] [2025-03-03 08:58:57,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330247161] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 08:58:57,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [900508566] [2025-03-03 08:58:57,910 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 08:58:57,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 08:58:57,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 08:58:57,912 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 08:58:57,913 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 08:58:57,943 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-03 08:58:57,957 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-03 08:58:57,958 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 08:58:57,958 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 08:58:57,959 INFO L256 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-03 08:58:57,960 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 08:58:57,991 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-03 08:58:57,992 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 08:58:58,013 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-03 08:58:58,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [900508566] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 08:58:58,013 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 08:58:58,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-03-03 08:58:58,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031701529] [2025-03-03 08:58:58,013 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 08:58:58,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-03 08:58:58,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 08:58:58,014 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-03 08:58:58,014 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-03-03 08:58:58,014 INFO L87 Difference]: Start difference. First operand 19 states and 26 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 08:58:58,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 08:58:58,028 INFO L93 Difference]: Finished difference Result 37 states and 53 transitions. [2025-03-03 08:58:58,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-03 08:58:58,029 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2025-03-03 08:58:58,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 08:58:58,029 INFO L225 Difference]: With dead ends: 37 [2025-03-03 08:58:58,029 INFO L226 Difference]: Without dead ends: 22 [2025-03-03 08:58:58,029 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 25 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 08:58:58,030 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 47 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 08:58:58,030 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 47 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 08:58:58,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2025-03-03 08:58:58,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2025-03-03 08:58:58,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.380952380952381) internal successors, (29), 21 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 08:58:58,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 29 transitions. [2025-03-03 08:58:58,032 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 29 transitions. Word has length 14 [2025-03-03 08:58:58,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 08:58:58,033 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 29 transitions. [2025-03-03 08:58:58,033 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 08:58:58,033 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 29 transitions. [2025-03-03 08:58:58,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-03-03 08:58:58,033 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 08:58:58,033 INFO L218 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 08:58:58,039 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-03 08:58:58,234 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 08:58:58,234 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 08:58:58,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 08:58:58,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1494382515, now seen corresponding path program 2 times [2025-03-03 08:58:58,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 08:58:58,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580105930] [2025-03-03 08:58:58,235 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-03 08:58:58,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 08:58:58,242 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 17 statements into 2 equivalence classes. [2025-03-03 08:58:58,257 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-03-03 08:58:58,257 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-03 08:58:58,257 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 08:58:58,306 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-03 08:58:58,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 08:58:58,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580105930] [2025-03-03 08:58:58,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580105930] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 08:58:58,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574255877] [2025-03-03 08:58:58,307 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-03 08:58:58,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 08:58:58,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 08:58:58,308 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 08:58:58,310 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 08:58:58,336 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 17 statements into 2 equivalence classes. [2025-03-03 08:58:58,347 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-03-03 08:58:58,348 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-03 08:58:58,348 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 08:58:58,348 INFO L256 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-03 08:58:58,349 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 08:58:58,381 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-03 08:58:58,382 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 08:58:58,440 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-03 08:58:58,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [574255877] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 08:58:58,441 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 08:58:58,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2025-03-03 08:58:58,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58251270] [2025-03-03 08:58:58,441 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 08:58:58,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-03 08:58:58,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 08:58:58,442 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-03 08:58:58,442 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2025-03-03 08:58:58,442 INFO L87 Difference]: Start difference. First operand 22 states and 29 transitions. Second operand has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 14 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 08:58:58,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 08:58:58,474 INFO L93 Difference]: Finished difference Result 52 states and 76 transitions. [2025-03-03 08:58:58,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-03 08:58:58,475 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 14 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2025-03-03 08:58:58,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 08:58:58,475 INFO L225 Difference]: With dead ends: 52 [2025-03-03 08:58:58,475 INFO L226 Difference]: Without dead ends: 37 [2025-03-03 08:58:58,476 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2025-03-03 08:58:58,476 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 5 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 08:58:58,477 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 62 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 08:58:58,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2025-03-03 08:58:58,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 33. [2025-03-03 08:58:58,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.28125) internal successors, (41), 32 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 08:58:58,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 41 transitions. [2025-03-03 08:58:58,481 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 41 transitions. Word has length 17 [2025-03-03 08:58:58,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 08:58:58,481 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 41 transitions. [2025-03-03 08:58:58,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 14 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 08:58:58,481 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 41 transitions. [2025-03-03 08:58:58,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-03-03 08:58:58,482 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 08:58:58,482 INFO L218 NwaCegarLoop]: trace histogram [10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 08:58:58,487 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-03 08:58:58,682 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 08:58:58,682 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 08:58:58,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 08:58:58,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1285758660, now seen corresponding path program 3 times [2025-03-03 08:58:58,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 08:58:58,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472621435] [2025-03-03 08:58:58,683 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-03 08:58:58,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 08:58:58,694 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 26 statements into 6 equivalence classes. [2025-03-03 08:58:58,710 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 22 of 26 statements. [2025-03-03 08:58:58,711 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-03-03 08:58:58,711 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 08:58:58,770 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2025-03-03 08:58:58,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 08:58:58,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472621435] [2025-03-03 08:58:58,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472621435] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 08:58:58,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405508054] [2025-03-03 08:58:58,771 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-03 08:58:58,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 08:58:58,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 08:58:58,773 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 08:58:58,776 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 08:58:58,813 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 26 statements into 6 equivalence classes. [2025-03-03 08:58:58,831 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 22 of 26 statements. [2025-03-03 08:58:58,831 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-03-03 08:58:58,831 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 08:58:58,832 INFO L256 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-03 08:58:58,834 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 08:58:58,852 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2025-03-03 08:58:58,853 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 08:58:58,884 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2025-03-03 08:58:58,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1405508054] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 08:58:58,885 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 08:58:58,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2025-03-03 08:58:58,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745175755] [2025-03-03 08:58:58,885 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 08:58:58,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-03 08:58:58,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 08:58:58,886 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-03 08:58:58,886 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2025-03-03 08:58:58,886 INFO L87 Difference]: Start difference. First operand 33 states and 41 transitions. Second operand has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 08:58:58,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 08:58:58,921 INFO L93 Difference]: Finished difference Result 77 states and 108 transitions. [2025-03-03 08:58:58,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-03 08:58:58,921 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2025-03-03 08:58:58,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 08:58:58,922 INFO L225 Difference]: With dead ends: 77 [2025-03-03 08:58:58,922 INFO L226 Difference]: Without dead ends: 57 [2025-03-03 08:58:58,923 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2025-03-03 08:58:58,923 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 18 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 08:58:58,923 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 42 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 08:58:58,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2025-03-03 08:58:58,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2025-03-03 08:58:58,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.3035714285714286) internal successors, (73), 56 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 08:58:58,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 73 transitions. [2025-03-03 08:58:58,928 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 73 transitions. Word has length 26 [2025-03-03 08:58:58,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 08:58:58,928 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 73 transitions. [2025-03-03 08:58:58,928 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 08:58:58,929 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 73 transitions. [2025-03-03 08:58:58,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-03-03 08:58:58,929 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 08:58:58,929 INFO L218 NwaCegarLoop]: trace histogram [10, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 08:58:58,936 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-03 08:58:59,129 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 08:58:59,130 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 08:58:59,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 08:58:59,130 INFO L85 PathProgramCache]: Analyzing trace with hash 455009788, now seen corresponding path program 4 times [2025-03-03 08:58:59,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 08:58:59,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812982391] [2025-03-03 08:58:59,131 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-03 08:58:59,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 08:58:59,147 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 38 statements into 2 equivalence classes. [2025-03-03 08:58:59,158 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 38 of 38 statements. [2025-03-03 08:58:59,158 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-03 08:58:59,158 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 08:58:59,279 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 1 proven. 51 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2025-03-03 08:58:59,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 08:58:59,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812982391] [2025-03-03 08:58:59,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812982391] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 08:58:59,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1940625501] [2025-03-03 08:58:59,280 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-03 08:58:59,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 08:58:59,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 08:58:59,282 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 08:58:59,284 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 08:58:59,325 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 38 statements into 2 equivalence classes. [2025-03-03 08:58:59,346 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 38 of 38 statements. [2025-03-03 08:58:59,346 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-03 08:58:59,346 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 08:58:59,348 INFO L256 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-03 08:58:59,349 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 08:58:59,376 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 1 proven. 51 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2025-03-03 08:58:59,377 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 08:58:59,475 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 1 proven. 51 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2025-03-03 08:58:59,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1940625501] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 08:58:59,475 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 08:58:59,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2025-03-03 08:58:59,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327962087] [2025-03-03 08:58:59,476 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 08:58:59,476 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-03-03 08:58:59,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 08:58:59,478 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-03-03 08:58:59,478 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2025-03-03 08:58:59,478 INFO L87 Difference]: Start difference. First operand 57 states and 73 transitions. Second operand has 16 states, 16 states have (on average 3.0625) internal successors, (49), 16 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 08:58:59,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 08:58:59,559 INFO L93 Difference]: Finished difference Result 149 states and 212 transitions. [2025-03-03 08:58:59,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-03 08:58:59,559 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.0625) internal successors, (49), 16 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2025-03-03 08:58:59,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 08:58:59,560 INFO L225 Difference]: With dead ends: 149 [2025-03-03 08:58:59,560 INFO L226 Difference]: Without dead ends: 105 [2025-03-03 08:58:59,560 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2025-03-03 08:58:59,561 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 37 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 08:58:59,561 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 61 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 08:58:59,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2025-03-03 08:58:59,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2025-03-03 08:58:59,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 104 states have (on average 1.3173076923076923) internal successors, (137), 104 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 08:58:59,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 137 transitions. [2025-03-03 08:58:59,573 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 137 transitions. Word has length 38 [2025-03-03 08:58:59,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 08:58:59,573 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 137 transitions. [2025-03-03 08:58:59,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.0625) internal successors, (49), 16 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 08:58:59,574 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 137 transitions. [2025-03-03 08:58:59,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2025-03-03 08:58:59,574 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 08:58:59,575 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 08:58:59,581 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-03 08:58:59,779 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 08:58:59,779 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 08:58:59,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 08:58:59,780 INFO L85 PathProgramCache]: Analyzing trace with hash -2056286340, now seen corresponding path program 5 times [2025-03-03 08:58:59,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 08:58:59,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61952789] [2025-03-03 08:58:59,780 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-03 08:58:59,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 08:58:59,798 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 62 statements into 16 equivalence classes. [2025-03-03 08:58:59,852 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) and asserted 54 of 62 statements. [2025-03-03 08:58:59,852 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2025-03-03 08:58:59,852 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 08:59:00,086 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 1 proven. 287 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2025-03-03 08:59:00,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 08:59:00,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61952789] [2025-03-03 08:59:00,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61952789] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 08:59:00,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748205520] [2025-03-03 08:59:00,086 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-03 08:59:00,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 08:59:00,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 08:59:00,099 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 08:59:00,109 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 08:59:00,145 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 62 statements into 16 equivalence classes. [2025-03-03 08:59:00,211 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) and asserted 54 of 62 statements. [2025-03-03 08:59:00,212 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2025-03-03 08:59:00,212 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 08:59:00,214 INFO L256 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-03 08:59:00,216 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 08:59:00,282 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 1 proven. 287 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2025-03-03 08:59:00,283 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 08:59:00,606 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 1 proven. 287 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2025-03-03 08:59:00,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748205520] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 08:59:00,606 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 08:59:00,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 32 [2025-03-03 08:59:00,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119107429] [2025-03-03 08:59:00,606 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 08:59:00,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2025-03-03 08:59:00,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 08:59:00,609 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2025-03-03 08:59:00,610 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2025-03-03 08:59:00,610 INFO L87 Difference]: Start difference. First operand 105 states and 137 transitions. Second operand has 32 states, 32 states have (on average 3.03125) internal successors, (97), 32 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 08:59:00,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 08:59:00,740 INFO L93 Difference]: Finished difference Result 293 states and 420 transitions. [2025-03-03 08:59:00,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2025-03-03 08:59:00,741 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.03125) internal successors, (97), 32 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2025-03-03 08:59:00,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 08:59:00,742 INFO L225 Difference]: With dead ends: 293 [2025-03-03 08:59:00,742 INFO L226 Difference]: Without dead ends: 201 [2025-03-03 08:59:00,743 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2025-03-03 08:59:00,743 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 99 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 08:59:00,743 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 88 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 08:59:00,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2025-03-03 08:59:00,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2025-03-03 08:59:00,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 200 states have (on average 1.325) internal successors, (265), 200 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 08:59:00,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 265 transitions. [2025-03-03 08:59:00,756 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 265 transitions. Word has length 62 [2025-03-03 08:59:00,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 08:59:00,757 INFO L471 AbstractCegarLoop]: Abstraction has 201 states and 265 transitions. [2025-03-03 08:59:00,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.03125) internal successors, (97), 32 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 08:59:00,758 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 265 transitions. [2025-03-03 08:59:00,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2025-03-03 08:59:00,762 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 08:59:00,762 INFO L218 NwaCegarLoop]: trace histogram [30, 30, 30, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 08:59:00,770 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 08:59:00,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 08:59:00,963 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 08:59:00,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 08:59:00,964 INFO L85 PathProgramCache]: Analyzing trace with hash 545481340, now seen corresponding path program 6 times [2025-03-03 08:59:00,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 08:59:00,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672077308] [2025-03-03 08:59:00,964 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-03 08:59:00,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 08:59:00,981 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 110 statements into 32 equivalence classes. [2025-03-03 08:59:01,014 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 31 of 110 statements. [2025-03-03 08:59:01,014 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2025-03-03 08:59:01,014 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 08:59:01,370 INFO L134 CoverageAnalysis]: Checked inductivity of 1391 backedges. 1 proven. 59 refuted. 0 times theorem prover too weak. 1331 trivial. 0 not checked. [2025-03-03 08:59:01,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 08:59:01,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672077308] [2025-03-03 08:59:01,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672077308] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 08:59:01,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [738575627] [2025-03-03 08:59:01,372 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-03 08:59:01,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 08:59:01,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 08:59:01,373 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 08:59:01,375 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 08:59:01,422 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 110 statements into 32 equivalence classes. [2025-03-03 08:59:01,446 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 31 of 110 statements. [2025-03-03 08:59:01,446 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2025-03-03 08:59:01,446 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 08:59:01,448 INFO L256 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-03-03 08:59:01,450 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 08:59:01,869 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-03 08:59:01,870 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2025-03-03 08:59:01,881 INFO L134 CoverageAnalysis]: Checked inductivity of 1391 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 1331 trivial. 0 not checked. [2025-03-03 08:59:01,881 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 08:59:02,092 INFO L349 Elim1Store]: treesize reduction 13, result has 60.6 percent of original size [2025-03-03 08:59:02,093 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 36 treesize of output 28 [2025-03-03 08:59:02,130 INFO L134 CoverageAnalysis]: Checked inductivity of 1391 backedges. 30 proven. 30 refuted. 0 times theorem prover too weak. 1331 trivial. 0 not checked. [2025-03-03 08:59:02,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [738575627] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 08:59:02,131 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 08:59:02,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 8] total 18 [2025-03-03 08:59:02,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136758710] [2025-03-03 08:59:02,131 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 08:59:02,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-03-03 08:59:02,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 08:59:02,132 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-03-03 08:59:02,132 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2025-03-03 08:59:02,132 INFO L87 Difference]: Start difference. First operand 201 states and 265 transitions. Second operand has 18 states, 18 states have (on average 2.0) internal successors, (36), 18 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 08:59:02,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 08:59:02,294 INFO L93 Difference]: Finished difference Result 487 states and 647 transitions. [2025-03-03 08:59:02,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-03 08:59:02,295 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.0) internal successors, (36), 18 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2025-03-03 08:59:02,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 08:59:02,297 INFO L225 Difference]: With dead ends: 487 [2025-03-03 08:59:02,297 INFO L226 Difference]: Without dead ends: 299 [2025-03-03 08:59:02,298 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=432, Unknown=0, NotChecked=0, Total=552 [2025-03-03 08:59:02,298 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 101 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 08:59:02,299 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 83 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 08:59:02,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2025-03-03 08:59:02,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 293. [2025-03-03 08:59:02,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 292 states have (on average 1.321917808219178) internal successors, (386), 292 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 08:59:02,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 386 transitions. [2025-03-03 08:59:02,325 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 386 transitions. Word has length 110 [2025-03-03 08:59:02,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 08:59:02,326 INFO L471 AbstractCegarLoop]: Abstraction has 293 states and 386 transitions. [2025-03-03 08:59:02,326 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.0) internal successors, (36), 18 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 08:59:02,326 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 386 transitions. [2025-03-03 08:59:02,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2025-03-03 08:59:02,327 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 08:59:02,327 INFO L218 NwaCegarLoop]: trace histogram [30, 30, 30, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 08:59:02,334 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 08:59:02,531 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,SelfDestructingSolverStorable8 [2025-03-03 08:59:02,531 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 08:59:02,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 08:59:02,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1720774320, now seen corresponding path program 1 times [2025-03-03 08:59:02,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 08:59:02,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505630284] [2025-03-03 08:59:02,531 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 08:59:02,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 08:59:02,545 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 113 statements into 1 equivalence classes. [2025-03-03 08:59:02,556 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 113 of 113 statements. [2025-03-03 08:59:02,557 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 08:59:02,557 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 08:59:02,799 INFO L134 CoverageAnalysis]: Checked inductivity of 1393 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 1338 trivial. 0 not checked. [2025-03-03 08:59:02,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 08:59:02,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505630284] [2025-03-03 08:59:02,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505630284] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 08:59:02,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142911255] [2025-03-03 08:59:02,800 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 08:59:02,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 08:59:02,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 08:59:02,802 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 08:59:02,804 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 08:59:02,859 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 113 statements into 1 equivalence classes. [2025-03-03 08:59:02,896 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 113 of 113 statements. [2025-03-03 08:59:02,897 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 08:59:02,897 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 08:59:02,898 INFO L256 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-03 08:59:02,900 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 08:59:02,924 INFO L134 CoverageAnalysis]: Checked inductivity of 1393 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 1338 trivial. 0 not checked. [2025-03-03 08:59:02,925 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 08:59:03,071 INFO L134 CoverageAnalysis]: Checked inductivity of 1393 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 1338 trivial. 0 not checked. [2025-03-03 08:59:03,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2142911255] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 08:59:03,071 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 08:59:03,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2025-03-03 08:59:03,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035976490] [2025-03-03 08:59:03,072 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 08:59:03,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-03-03 08:59:03,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 08:59:03,072 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-03-03 08:59:03,073 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2025-03-03 08:59:03,073 INFO L87 Difference]: Start difference. First operand 293 states and 386 transitions. Second operand has 25 states, 25 states have (on average 1.56) internal successors, (39), 25 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 08:59:03,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 08:59:03,102 INFO L93 Difference]: Finished difference Result 585 states and 782 transitions. [2025-03-03 08:59:03,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-03-03 08:59:03,103 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.56) internal successors, (39), 25 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2025-03-03 08:59:03,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 08:59:03,105 INFO L225 Difference]: With dead ends: 585 [2025-03-03 08:59:03,105 INFO L226 Difference]: Without dead ends: 305 [2025-03-03 08:59:03,105 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2025-03-03 08:59:03,106 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 08:59:03,106 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 77 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 08:59:03,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2025-03-03 08:59:03,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 305. [2025-03-03 08:59:03,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 304 states have (on average 1.3092105263157894) internal successors, (398), 304 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 08:59:03,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 398 transitions. [2025-03-03 08:59:03,137 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 398 transitions. Word has length 113 [2025-03-03 08:59:03,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 08:59:03,137 INFO L471 AbstractCegarLoop]: Abstraction has 305 states and 398 transitions. [2025-03-03 08:59:03,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.56) internal successors, (39), 25 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 08:59:03,138 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 398 transitions. [2025-03-03 08:59:03,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2025-03-03 08:59:03,138 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 08:59:03,139 INFO L218 NwaCegarLoop]: trace histogram [30, 30, 30, 22, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 08:59:03,145 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-03-03 08:59:03,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-03-03 08:59:03,339 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 08:59:03,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 08:59:03,340 INFO L85 PathProgramCache]: Analyzing trace with hash -932167088, now seen corresponding path program 2 times [2025-03-03 08:59:03,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 08:59:03,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312758964] [2025-03-03 08:59:03,340 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-03 08:59:03,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 08:59:03,356 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 125 statements into 2 equivalence classes. [2025-03-03 08:59:03,372 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 125 of 125 statements. [2025-03-03 08:59:03,372 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-03 08:59:03,372 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 08:59:03,892 INFO L134 CoverageAnalysis]: Checked inductivity of 1591 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 1338 trivial. 0 not checked. [2025-03-03 08:59:03,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 08:59:03,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312758964] [2025-03-03 08:59:03,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312758964] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 08:59:03,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603976328] [2025-03-03 08:59:03,893 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-03 08:59:03,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 08:59:03,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 08:59:03,896 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 08:59:03,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-03 08:59:03,956 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 125 statements into 2 equivalence classes. [2025-03-03 08:59:04,003 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 125 of 125 statements. [2025-03-03 08:59:04,003 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-03 08:59:04,003 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 08:59:04,005 INFO L256 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-03-03 08:59:04,008 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 08:59:04,049 INFO L134 CoverageAnalysis]: Checked inductivity of 1591 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 1338 trivial. 0 not checked. [2025-03-03 08:59:04,049 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 08:59:04,623 INFO L134 CoverageAnalysis]: Checked inductivity of 1591 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 1338 trivial. 0 not checked. [2025-03-03 08:59:04,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603976328] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 08:59:04,623 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 08:59:04,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2025-03-03 08:59:04,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575046963] [2025-03-03 08:59:04,624 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 08:59:04,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2025-03-03 08:59:04,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 08:59:04,625 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2025-03-03 08:59:04,625 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2025-03-03 08:59:04,626 INFO L87 Difference]: Start difference. First operand 305 states and 398 transitions. Second operand has 49 states, 49 states have (on average 1.2857142857142858) internal successors, (63), 49 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 08:59:04,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 08:59:04,670 INFO L93 Difference]: Finished difference Result 609 states and 818 transitions. [2025-03-03 08:59:04,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2025-03-03 08:59:04,670 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.2857142857142858) internal successors, (63), 49 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2025-03-03 08:59:04,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 08:59:04,688 INFO L225 Difference]: With dead ends: 609 [2025-03-03 08:59:04,688 INFO L226 Difference]: Without dead ends: 329 [2025-03-03 08:59:04,689 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2025-03-03 08:59:04,690 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 08:59:04,690 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 77 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 08:59:04,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2025-03-03 08:59:04,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 329. [2025-03-03 08:59:04,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 328 states have (on average 1.2865853658536586) internal successors, (422), 328 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 08:59:04,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 422 transitions. [2025-03-03 08:59:04,703 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 422 transitions. Word has length 125 [2025-03-03 08:59:04,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 08:59:04,704 INFO L471 AbstractCegarLoop]: Abstraction has 329 states and 422 transitions. [2025-03-03 08:59:04,704 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.2857142857142858) internal successors, (63), 49 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 08:59:04,704 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 422 transitions. [2025-03-03 08:59:04,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2025-03-03 08:59:04,705 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 08:59:04,705 INFO L218 NwaCegarLoop]: trace histogram [46, 30, 30, 30, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 08:59:04,711 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-03-03 08:59:04,909 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-03-03 08:59:04,909 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 08:59:04,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 08:59:04,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1290675280, now seen corresponding path program 3 times [2025-03-03 08:59:04,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 08:59:04,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013495577] [2025-03-03 08:59:04,910 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-03 08:59:04,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 08:59:04,930 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 149 statements into 32 equivalence classes. [2025-03-03 08:59:04,962 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) and asserted 40 of 149 statements. [2025-03-03 08:59:04,962 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2025-03-03 08:59:04,962 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 08:59:05,405 INFO L134 CoverageAnalysis]: Checked inductivity of 2419 backedges. 1 proven. 147 refuted. 0 times theorem prover too weak. 2271 trivial. 0 not checked. [2025-03-03 08:59:05,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 08:59:05,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013495577] [2025-03-03 08:59:05,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013495577] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 08:59:05,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1081555748] [2025-03-03 08:59:05,406 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-03 08:59:05,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 08:59:05,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 08:59:05,409 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 08:59:05,410 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-03 08:59:05,487 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 149 statements into 32 equivalence classes. [2025-03-03 08:59:05,582 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) and asserted 40 of 149 statements. [2025-03-03 08:59:05,582 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2025-03-03 08:59:05,582 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 08:59:05,584 INFO L256 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-03-03 08:59:05,587 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 08:59:06,231 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-03 08:59:06,231 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 13 [2025-03-03 08:59:06,248 INFO L134 CoverageAnalysis]: Checked inductivity of 2419 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 2271 trivial. 0 not checked. [2025-03-03 08:59:06,248 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 08:59:06,564 INFO L349 Elim1Store]: treesize reduction 13, result has 74.5 percent of original size [2025-03-03 08:59:06,564 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 56 treesize of output 49 [2025-03-03 08:59:06,588 INFO L134 CoverageAnalysis]: Checked inductivity of 2419 backedges. 116 proven. 32 refuted. 0 times theorem prover too weak. 2271 trivial. 0 not checked. [2025-03-03 08:59:06,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1081555748] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 08:59:06,588 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 08:59:06,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 12] total 31 [2025-03-03 08:59:06,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73012501] [2025-03-03 08:59:06,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 08:59:06,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2025-03-03 08:59:06,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 08:59:06,589 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2025-03-03 08:59:06,589 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=800, Unknown=0, NotChecked=0, Total=930 [2025-03-03 08:59:06,589 INFO L87 Difference]: Start difference. First operand 329 states and 422 transitions. Second operand has 31 states, 31 states have (on average 1.7741935483870968) internal successors, (55), 31 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 08:59:07,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 08:59:07,318 INFO L93 Difference]: Finished difference Result 445 states and 575 transitions. [2025-03-03 08:59:07,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2025-03-03 08:59:07,319 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.7741935483870968) internal successors, (55), 31 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 149 [2025-03-03 08:59:07,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 08:59:07,321 INFO L225 Difference]: With dead ends: 445 [2025-03-03 08:59:07,322 INFO L226 Difference]: Without dead ends: 439 [2025-03-03 08:59:07,323 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 279 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 668 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=423, Invalid=2657, Unknown=0, NotChecked=0, Total=3080 [2025-03-03 08:59:07,323 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 85 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 726 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-03 08:59:07,323 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 180 Invalid, 743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 726 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-03 08:59:07,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2025-03-03 08:59:07,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 332. [2025-03-03 08:59:07,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 331 states have (on average 1.283987915407855) internal successors, (425), 331 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 08:59:07,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 425 transitions. [2025-03-03 08:59:07,335 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 425 transitions. Word has length 149 [2025-03-03 08:59:07,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 08:59:07,335 INFO L471 AbstractCegarLoop]: Abstraction has 332 states and 425 transitions. [2025-03-03 08:59:07,335 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.7741935483870968) internal successors, (55), 31 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 08:59:07,335 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 425 transitions. [2025-03-03 08:59:07,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2025-03-03 08:59:07,336 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 08:59:07,336 INFO L218 NwaCegarLoop]: trace histogram [46, 30, 30, 30, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 08:59:07,346 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-03-03 08:59:07,537 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-03-03 08:59:07,537 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 08:59:07,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 08:59:07,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1960906492, now seen corresponding path program 4 times [2025-03-03 08:59:07,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 08:59:07,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499250329] [2025-03-03 08:59:07,538 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-03 08:59:07,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 08:59:07,560 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 152 statements into 2 equivalence classes. [2025-03-03 08:59:07,576 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 152 of 152 statements. [2025-03-03 08:59:07,576 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-03 08:59:07,576 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 08:59:08,360 INFO L134 CoverageAnalysis]: Checked inductivity of 2424 backedges. 1 proven. 1335 refuted. 0 times theorem prover too weak. 1088 trivial. 0 not checked. [2025-03-03 08:59:08,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 08:59:08,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499250329] [2025-03-03 08:59:08,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499250329] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 08:59:08,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259774683] [2025-03-03 08:59:08,360 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-03 08:59:08,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 08:59:08,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 08:59:08,362 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 08:59:08,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-03 08:59:08,444 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 152 statements into 2 equivalence classes. [2025-03-03 08:59:08,506 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 152 of 152 statements. [2025-03-03 08:59:08,507 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-03 08:59:08,507 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 08:59:08,509 INFO L256 TraceCheckSpWp]: Trace formula consists of 737 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-03-03 08:59:08,511 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 08:59:08,602 INFO L134 CoverageAnalysis]: Checked inductivity of 2424 backedges. 1 proven. 1335 refuted. 0 times theorem prover too weak. 1088 trivial. 0 not checked. [2025-03-03 08:59:08,602 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 08:59:09,491 INFO L134 CoverageAnalysis]: Checked inductivity of 2424 backedges. 1 proven. 1335 refuted. 0 times theorem prover too weak. 1088 trivial. 0 not checked. [2025-03-03 08:59:09,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1259774683] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 08:59:09,492 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 08:59:09,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 64 [2025-03-03 08:59:09,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738408583] [2025-03-03 08:59:09,492 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 08:59:09,493 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2025-03-03 08:59:09,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 08:59:09,494 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2025-03-03 08:59:09,494 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2025-03-03 08:59:09,495 INFO L87 Difference]: Start difference. First operand 332 states and 425 transitions. Second operand has 64 states, 64 states have (on average 3.046875) internal successors, (195), 64 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 08:59:09,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 08:59:09,757 INFO L93 Difference]: Finished difference Result 903 states and 1280 transitions. [2025-03-03 08:59:09,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2025-03-03 08:59:09,757 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 3.046875) internal successors, (195), 64 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 152 [2025-03-03 08:59:09,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 08:59:09,760 INFO L225 Difference]: With dead ends: 903 [2025-03-03 08:59:09,760 INFO L226 Difference]: Without dead ends: 620 [2025-03-03 08:59:09,761 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 273 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2025-03-03 08:59:09,761 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 258 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-03 08:59:09,762 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 131 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-03 08:59:09,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2025-03-03 08:59:09,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 620. [2025-03-03 08:59:09,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 620 states, 619 states have (on average 1.306946688206785) internal successors, (809), 619 states have internal predecessors, (809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 08:59:09,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 809 transitions. [2025-03-03 08:59:09,791 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 809 transitions. Word has length 152 [2025-03-03 08:59:09,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 08:59:09,792 INFO L471 AbstractCegarLoop]: Abstraction has 620 states and 809 transitions. [2025-03-03 08:59:09,792 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 3.046875) internal successors, (195), 64 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 08:59:09,792 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 809 transitions. [2025-03-03 08:59:09,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2025-03-03 08:59:09,796 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 08:59:09,796 INFO L218 NwaCegarLoop]: trace histogram [62, 62, 62, 46, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 08:59:09,802 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-03-03 08:59:10,000 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-03-03 08:59:10,000 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 08:59:10,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 08:59:10,002 INFO L85 PathProgramCache]: Analyzing trace with hash -836619012, now seen corresponding path program 5 times [2025-03-03 08:59:10,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 08:59:10,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362056734] [2025-03-03 08:59:10,002 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-03 08:59:10,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 08:59:10,024 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 248 statements into 64 equivalence classes. [2025-03-03 08:59:11,120 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 63 check-sat command(s) and asserted 240 of 248 statements. [2025-03-03 08:59:11,120 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 63 check-sat command(s) [2025-03-03 08:59:11,120 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 08:59:13,125 INFO L134 CoverageAnalysis]: Checked inductivity of 6824 backedges. 1 proven. 5735 refuted. 0 times theorem prover too weak. 1088 trivial. 0 not checked. [2025-03-03 08:59:13,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 08:59:13,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362056734] [2025-03-03 08:59:13,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362056734] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 08:59:13,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747875694] [2025-03-03 08:59:13,125 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-03 08:59:13,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 08:59:13,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 08:59:13,127 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 08:59:13,128 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-03-03 08:59:13,241 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 248 statements into 64 equivalence classes. [2025-03-03 08:59:28,264 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 63 check-sat command(s) and asserted 240 of 248 statements. [2025-03-03 08:59:28,264 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 63 check-sat command(s) [2025-03-03 08:59:28,264 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 08:59:28,283 INFO L256 TraceCheckSpWp]: Trace formula consists of 942 conjuncts, 64 conjuncts are in the unsatisfiable core [2025-03-03 08:59:28,286 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 08:59:28,469 INFO L134 CoverageAnalysis]: Checked inductivity of 6824 backedges. 1 proven. 5735 refuted. 0 times theorem prover too weak. 1088 trivial. 0 not checked. [2025-03-03 08:59:28,469 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 08:59:31,506 INFO L134 CoverageAnalysis]: Checked inductivity of 6824 backedges. 1 proven. 5735 refuted. 0 times theorem prover too weak. 1088 trivial. 0 not checked. [2025-03-03 08:59:31,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [747875694] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 08:59:31,507 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 08:59:31,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65, 65] total 128 [2025-03-03 08:59:31,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307226779] [2025-03-03 08:59:31,507 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 08:59:31,507 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 128 states [2025-03-03 08:59:31,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 08:59:31,509 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2025-03-03 08:59:31,511 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8128, Invalid=8128, Unknown=0, NotChecked=0, Total=16256 [2025-03-03 08:59:31,512 INFO L87 Difference]: Start difference. First operand 620 states and 809 transitions. Second operand has 128 states, 128 states have (on average 3.0234375) internal successors, (387), 128 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 08:59:32,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 08:59:32,719 INFO L93 Difference]: Finished difference Result 1767 states and 2528 transitions. [2025-03-03 08:59:32,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2025-03-03 08:59:32,720 INFO L78 Accepts]: Start accepts. Automaton has has 128 states, 128 states have (on average 3.0234375) internal successors, (387), 128 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 248 [2025-03-03 08:59:32,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 08:59:32,723 INFO L225 Difference]: With dead ends: 1767 [2025-03-03 08:59:32,724 INFO L226 Difference]: Without dead ends: 1196 [2025-03-03 08:59:32,726 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 559 GetRequests, 433 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=8128, Invalid=8128, Unknown=0, NotChecked=0, Total=16256 [2025-03-03 08:59:32,727 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 732 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 732 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-03 08:59:32,727 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [732 Valid, 217 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 393 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-03 08:59:32,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1196 states. [2025-03-03 08:59:32,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1196 to 1196. [2025-03-03 08:59:32,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1196 states, 1195 states have (on average 1.3196652719665272) internal successors, (1577), 1195 states have internal predecessors, (1577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 08:59:32,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1196 states to 1196 states and 1577 transitions. [2025-03-03 08:59:32,760 INFO L78 Accepts]: Start accepts. Automaton has 1196 states and 1577 transitions. Word has length 248 [2025-03-03 08:59:32,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 08:59:32,760 INFO L471 AbstractCegarLoop]: Abstraction has 1196 states and 1577 transitions. [2025-03-03 08:59:32,760 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 128 states, 128 states have (on average 3.0234375) internal successors, (387), 128 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 08:59:32,761 INFO L276 IsEmpty]: Start isEmpty. Operand 1196 states and 1577 transitions. [2025-03-03 08:59:32,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2025-03-03 08:59:32,765 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 08:59:32,765 INFO L218 NwaCegarLoop]: trace histogram [126, 126, 126, 46, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 08:59:32,783 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-03-03 08:59:32,965 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2025-03-03 08:59:32,965 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 08:59:32,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 08:59:32,966 INFO L85 PathProgramCache]: Analyzing trace with hash 298615036, now seen corresponding path program 6 times [2025-03-03 08:59:32,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 08:59:32,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093862466] [2025-03-03 08:59:32,966 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-03 08:59:32,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 08:59:32,994 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 440 statements into 128 equivalence classes. [2025-03-03 08:59:33,053 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) and asserted 85 of 440 statements. [2025-03-03 08:59:33,053 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2025-03-03 08:59:33,053 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 08:59:33,564 INFO L134 CoverageAnalysis]: Checked inductivity of 24840 backedges. 1 proven. 1003 refuted. 0 times theorem prover too weak. 23836 trivial. 0 not checked. [2025-03-03 08:59:33,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 08:59:33,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093862466] [2025-03-03 08:59:33,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093862466] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 08:59:33,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663958104] [2025-03-03 08:59:33,564 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-03 08:59:33,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 08:59:33,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 08:59:33,569 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 08:59:33,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-03-03 08:59:33,721 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 440 statements into 128 equivalence classes. [2025-03-03 08:59:34,257 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) and asserted 85 of 440 statements. [2025-03-03 08:59:34,257 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2025-03-03 08:59:34,257 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 08:59:34,260 INFO L256 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-03-03 08:59:34,265 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 08:59:35,423 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-03 08:59:35,423 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 13 [2025-03-03 08:59:35,441 INFO L134 CoverageAnalysis]: Checked inductivity of 24840 backedges. 1 proven. 1003 refuted. 0 times theorem prover too weak. 23836 trivial. 0 not checked. [2025-03-03 08:59:35,441 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 08:59:36,668 INFO L349 Elim1Store]: treesize reduction 13, result has 73.5 percent of original size [2025-03-03 08:59:36,669 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 49 treesize of output 47 [2025-03-03 08:59:36,694 INFO L134 CoverageAnalysis]: Checked inductivity of 24840 backedges. 124 proven. 880 refuted. 0 times theorem prover too weak. 23836 trivial. 0 not checked. [2025-03-03 08:59:36,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [663958104] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 08:59:36,694 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 08:59:36,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 14] total 33 [2025-03-03 08:59:36,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217142774] [2025-03-03 08:59:36,694 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 08:59:36,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2025-03-03 08:59:36,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 08:59:36,695 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2025-03-03 08:59:36,695 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=908, Unknown=0, NotChecked=0, Total=1056 [2025-03-03 08:59:36,696 INFO L87 Difference]: Start difference. First operand 1196 states and 1577 transitions. Second operand has 33 states, 33 states have (on average 2.090909090909091) internal successors, (69), 33 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 08:59:37,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 08:59:37,049 INFO L93 Difference]: Finished difference Result 1597 states and 2111 transitions. [2025-03-03 08:59:37,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-03-03 08:59:37,049 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.090909090909091) internal successors, (69), 33 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 440 [2025-03-03 08:59:37,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 08:59:37,054 INFO L225 Difference]: With dead ends: 1597 [2025-03-03 08:59:37,054 INFO L226 Difference]: Without dead ends: 1591 [2025-03-03 08:59:37,055 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 902 GetRequests, 860 SyntacticMatches, 3 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=228, Invalid=1412, Unknown=0, NotChecked=0, Total=1640 [2025-03-03 08:59:37,055 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 45 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-03 08:59:37,056 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 160 Invalid, 539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-03 08:59:37,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1591 states. [2025-03-03 08:59:37,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1591 to 1199. [2025-03-03 08:59:37,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1199 states, 1198 states have (on average 1.318864774624374) internal successors, (1580), 1198 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 08:59:37,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1199 states to 1199 states and 1580 transitions. [2025-03-03 08:59:37,093 INFO L78 Accepts]: Start accepts. Automaton has 1199 states and 1580 transitions. Word has length 440 [2025-03-03 08:59:37,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 08:59:37,093 INFO L471 AbstractCegarLoop]: Abstraction has 1199 states and 1580 transitions. [2025-03-03 08:59:37,093 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.090909090909091) internal successors, (69), 33 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 08:59:37,093 INFO L276 IsEmpty]: Start isEmpty. Operand 1199 states and 1580 transitions. [2025-03-03 08:59:37,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2025-03-03 08:59:37,098 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 08:59:37,098 INFO L218 NwaCegarLoop]: trace histogram [126, 126, 126, 46, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 08:59:37,106 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-03-03 08:59:37,298 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 08:59:37,299 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 08:59:37,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 08:59:37,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1164141264, now seen corresponding path program 7 times [2025-03-03 08:59:37,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 08:59:37,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614261561] [2025-03-03 08:59:37,299 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-03 08:59:37,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 08:59:37,334 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 443 statements into 1 equivalence classes. [2025-03-03 08:59:37,365 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 443 of 443 statements. [2025-03-03 08:59:37,366 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 08:59:37,366 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 08:59:39,056 INFO L134 CoverageAnalysis]: Checked inductivity of 24848 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 23767 trivial. 0 not checked. [2025-03-03 08:59:39,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 08:59:39,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614261561] [2025-03-03 08:59:39,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614261561] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 08:59:39,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479742084] [2025-03-03 08:59:39,056 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-03 08:59:39,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 08:59:39,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 08:59:39,058 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 08:59:39,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-03-03 08:59:39,207 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 443 statements into 1 equivalence classes. [2025-03-03 08:59:39,328 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 443 of 443 statements. [2025-03-03 08:59:39,328 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 08:59:39,328 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 08:59:39,333 INFO L256 TraceCheckSpWp]: Trace formula consists of 1517 conjuncts, 48 conjuncts are in the unsatisfiable core [2025-03-03 08:59:39,338 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 08:59:39,403 INFO L134 CoverageAnalysis]: Checked inductivity of 24848 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 23767 trivial. 0 not checked. [2025-03-03 08:59:39,403 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 08:59:41,133 INFO L134 CoverageAnalysis]: Checked inductivity of 24848 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 23767 trivial. 0 not checked. [2025-03-03 08:59:41,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1479742084] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 08:59:41,134 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 08:59:41,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 97 [2025-03-03 08:59:41,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193924495] [2025-03-03 08:59:41,134 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 08:59:41,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2025-03-03 08:59:41,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 08:59:41,136 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2025-03-03 08:59:41,137 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2025-03-03 08:59:41,138 INFO L87 Difference]: Start difference. First operand 1199 states and 1580 transitions. Second operand has 97 states, 97 states have (on average 1.1443298969072164) internal successors, (111), 97 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 08:59:41,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 08:59:41,236 INFO L93 Difference]: Finished difference Result 2397 states and 3206 transitions. [2025-03-03 08:59:41,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2025-03-03 08:59:41,237 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 1.1443298969072164) internal successors, (111), 97 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 443 [2025-03-03 08:59:41,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 08:59:41,241 INFO L225 Difference]: With dead ends: 2397 [2025-03-03 08:59:41,241 INFO L226 Difference]: Without dead ends: 1247 [2025-03-03 08:59:41,244 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 933 GetRequests, 838 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2025-03-03 08:59:41,246 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 08:59:41,246 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 107 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 08:59:41,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1247 states. [2025-03-03 08:59:41,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1247 to 1247. [2025-03-03 08:59:41,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1247 states, 1246 states have (on average 1.3065810593900482) internal successors, (1628), 1246 states have internal predecessors, (1628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 08:59:41,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1247 states to 1247 states and 1628 transitions. [2025-03-03 08:59:41,306 INFO L78 Accepts]: Start accepts. Automaton has 1247 states and 1628 transitions. Word has length 443 [2025-03-03 08:59:41,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 08:59:41,306 INFO L471 AbstractCegarLoop]: Abstraction has 1247 states and 1628 transitions. [2025-03-03 08:59:41,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 1.1443298969072164) internal successors, (111), 97 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 08:59:41,307 INFO L276 IsEmpty]: Start isEmpty. Operand 1247 states and 1628 transitions. [2025-03-03 08:59:41,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 492 [2025-03-03 08:59:41,310 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 08:59:41,310 INFO L218 NwaCegarLoop]: trace histogram [126, 126, 126, 94, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 08:59:41,319 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-03-03 08:59:41,510 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-03-03 08:59:41,511 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 08:59:41,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 08:59:41,511 INFO L85 PathProgramCache]: Analyzing trace with hash -581294384, now seen corresponding path program 8 times [2025-03-03 08:59:41,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 08:59:41,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128013016] [2025-03-03 08:59:41,511 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-03 08:59:41,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 08:59:41,545 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 491 statements into 2 equivalence classes. [2025-03-03 08:59:41,594 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 491 of 491 statements. [2025-03-03 08:59:41,594 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-03 08:59:41,594 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 08:59:46,208 INFO L134 CoverageAnalysis]: Checked inductivity of 28232 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 23767 trivial. 0 not checked. [2025-03-03 08:59:46,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 08:59:46,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128013016] [2025-03-03 08:59:46,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128013016] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 08:59:46,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264812468] [2025-03-03 08:59:46,209 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-03 08:59:46,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 08:59:46,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 08:59:46,212 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 08:59:46,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-03-03 08:59:46,370 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 491 statements into 2 equivalence classes. [2025-03-03 08:59:46,503 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 491 of 491 statements. [2025-03-03 08:59:46,503 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-03 08:59:46,503 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 08:59:46,509 INFO L256 TraceCheckSpWp]: Trace formula consists of 1949 conjuncts, 96 conjuncts are in the unsatisfiable core [2025-03-03 08:59:46,514 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 08:59:46,597 INFO L134 CoverageAnalysis]: Checked inductivity of 28232 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 23767 trivial. 0 not checked. [2025-03-03 08:59:46,597 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 08:59:53,384 INFO L134 CoverageAnalysis]: Checked inductivity of 28232 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 23767 trivial. 0 not checked. [2025-03-03 08:59:53,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [264812468] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 08:59:53,384 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 08:59:53,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97, 97] total 193 [2025-03-03 08:59:53,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106167417] [2025-03-03 08:59:53,385 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 08:59:53,385 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 193 states [2025-03-03 08:59:53,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 08:59:53,388 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2025-03-03 08:59:53,389 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2025-03-03 08:59:53,389 INFO L87 Difference]: Start difference. First operand 1247 states and 1628 transitions. Second operand has 193 states, 193 states have (on average 1.072538860103627) internal successors, (207), 193 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 08:59:53,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 08:59:53,622 INFO L93 Difference]: Finished difference Result 2493 states and 3350 transitions. [2025-03-03 08:59:53,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2025-03-03 08:59:53,623 INFO L78 Accepts]: Start accepts. Automaton has has 193 states, 193 states have (on average 1.072538860103627) internal successors, (207), 193 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 491 [2025-03-03 08:59:53,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 08:59:53,627 INFO L225 Difference]: With dead ends: 2493 [2025-03-03 08:59:53,627 INFO L226 Difference]: Without dead ends: 1343 [2025-03-03 08:59:53,629 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1077 GetRequests, 886 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2025-03-03 08:59:53,630 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 08:59:53,630 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 92 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 08:59:53,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1343 states. [2025-03-03 08:59:53,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1343 to 1343. [2025-03-03 08:59:53,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1343 states, 1342 states have (on average 1.2846497764530551) internal successors, (1724), 1342 states have internal predecessors, (1724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 08:59:53,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1343 states to 1343 states and 1724 transitions. [2025-03-03 08:59:53,673 INFO L78 Accepts]: Start accepts. Automaton has 1343 states and 1724 transitions. Word has length 491 [2025-03-03 08:59:53,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 08:59:53,673 INFO L471 AbstractCegarLoop]: Abstraction has 1343 states and 1724 transitions. [2025-03-03 08:59:53,674 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 193 states, 193 states have (on average 1.072538860103627) internal successors, (207), 193 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 08:59:53,674 INFO L276 IsEmpty]: Start isEmpty. Operand 1343 states and 1724 transitions. [2025-03-03 08:59:53,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 588 [2025-03-03 08:59:53,677 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 08:59:53,677 INFO L218 NwaCegarLoop]: trace histogram [190, 126, 126, 126, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 08:59:53,686 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-03-03 08:59:53,877 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-03-03 08:59:53,878 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 08:59:53,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 08:59:53,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1627410736, now seen corresponding path program 9 times [2025-03-03 08:59:53,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 08:59:53,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085749624] [2025-03-03 08:59:53,878 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-03 08:59:53,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 08:59:53,937 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 587 statements into 128 equivalence classes. [2025-03-03 08:59:53,969 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) and asserted 76 of 587 statements. [2025-03-03 08:59:53,969 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2025-03-03 08:59:53,969 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 08:59:54,389 INFO L134 CoverageAnalysis]: Checked inductivity of 41912 backedges. 1 proven. 1379 refuted. 0 times theorem prover too weak. 40532 trivial. 0 not checked. [2025-03-03 08:59:54,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 08:59:54,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085749624] [2025-03-03 08:59:54,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085749624] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 08:59:54,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502573855] [2025-03-03 08:59:54,389 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-03 08:59:54,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 08:59:54,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 08:59:54,391 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 08:59:54,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-03-03 08:59:54,621 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 587 statements into 128 equivalence classes. [2025-03-03 08:59:55,783 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) and asserted 76 of 587 statements. [2025-03-03 08:59:55,783 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2025-03-03 08:59:55,783 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 08:59:55,789 INFO L256 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 43 conjuncts are in the unsatisfiable core [2025-03-03 08:59:55,794 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 08:59:56,966 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-03 08:59:56,967 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 13 [2025-03-03 08:59:56,987 INFO L134 CoverageAnalysis]: Checked inductivity of 41912 backedges. 1 proven. 1379 refuted. 0 times theorem prover too weak. 40532 trivial. 0 not checked. [2025-03-03 08:59:56,987 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 08:59:58,176 INFO L349 Elim1Store]: treesize reduction 13, result has 73.5 percent of original size [2025-03-03 08:59:58,177 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 49 treesize of output 47 [2025-03-03 08:59:58,211 INFO L134 CoverageAnalysis]: Checked inductivity of 41912 backedges. 123 proven. 1257 refuted. 0 times theorem prover too weak. 40532 trivial. 0 not checked. [2025-03-03 08:59:58,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1502573855] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 08:59:58,212 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 08:59:58,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18, 17] total 40 [2025-03-03 08:59:58,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193820666] [2025-03-03 08:59:58,212 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 08:59:58,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2025-03-03 08:59:58,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 08:59:58,213 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2025-03-03 08:59:58,213 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=1370, Unknown=0, NotChecked=0, Total=1560 [2025-03-03 08:59:58,213 INFO L87 Difference]: Start difference. First operand 1343 states and 1724 transitions. Second operand has 40 states, 40 states have (on average 2.075) internal successors, (83), 40 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 08:59:58,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 08:59:58,759 INFO L93 Difference]: Finished difference Result 1753 states and 2270 transitions. [2025-03-03 08:59:58,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-03-03 08:59:58,759 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.075) internal successors, (83), 40 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 587 [2025-03-03 08:59:58,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 08:59:58,764 INFO L225 Difference]: With dead ends: 1753 [2025-03-03 08:59:58,765 INFO L226 Difference]: Without dead ends: 1747 [2025-03-03 08:59:58,765 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1199 GetRequests, 1150 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 478 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=279, Invalid=2073, Unknown=0, NotChecked=0, Total=2352 [2025-03-03 08:59:58,765 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 82 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 881 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-03 08:59:58,766 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 245 Invalid, 888 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 881 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-03 08:59:58,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1747 states. [2025-03-03 08:59:58,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1747 to 1346. [2025-03-03 08:59:58,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1346 states, 1345 states have (on average 1.284014869888476) internal successors, (1727), 1345 states have internal predecessors, (1727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 08:59:58,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1346 states to 1346 states and 1727 transitions. [2025-03-03 08:59:58,808 INFO L78 Accepts]: Start accepts. Automaton has 1346 states and 1727 transitions. Word has length 587 [2025-03-03 08:59:58,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 08:59:58,808 INFO L471 AbstractCegarLoop]: Abstraction has 1346 states and 1727 transitions. [2025-03-03 08:59:58,808 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.075) internal successors, (83), 40 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 08:59:58,808 INFO L276 IsEmpty]: Start isEmpty. Operand 1346 states and 1727 transitions. [2025-03-03 08:59:58,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 591 [2025-03-03 08:59:58,811 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 08:59:58,811 INFO L218 NwaCegarLoop]: trace histogram [190, 126, 126, 126, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 08:59:58,821 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-03-03 08:59:59,012 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-03-03 08:59:59,012 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 08:59:59,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 08:59:59,013 INFO L85 PathProgramCache]: Analyzing trace with hash -601525124, now seen corresponding path program 10 times [2025-03-03 08:59:59,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 08:59:59,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448980683] [2025-03-03 08:59:59,013 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-03 08:59:59,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 08:59:59,065 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 590 statements into 2 equivalence classes. [2025-03-03 08:59:59,107 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 590 of 590 statements. [2025-03-03 08:59:59,107 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-03 08:59:59,107 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:00:07,920 INFO L134 CoverageAnalysis]: Checked inductivity of 41923 backedges. 1 proven. 23751 refuted. 0 times theorem prover too weak. 18171 trivial. 0 not checked. [2025-03-03 09:00:07,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:00:07,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448980683] [2025-03-03 09:00:07,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448980683] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 09:00:07,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332496226] [2025-03-03 09:00:07,921 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-03 09:00:07,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:00:07,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 09:00:07,922 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 09:00:07,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-03-03 09:00:08,200 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 590 statements into 2 equivalence classes. [2025-03-03 09:00:08,400 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 590 of 590 statements. [2025-03-03 09:00:08,400 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-03 09:00:08,400 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:00:08,411 INFO L256 TraceCheckSpWp]: Trace formula consists of 2825 conjuncts, 128 conjuncts are in the unsatisfiable core [2025-03-03 09:00:08,417 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 09:00:08,677 INFO L134 CoverageAnalysis]: Checked inductivity of 41923 backedges. 1 proven. 23751 refuted. 0 times theorem prover too weak. 18171 trivial. 0 not checked. [2025-03-03 09:00:08,678 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 09:00:20,497 INFO L134 CoverageAnalysis]: Checked inductivity of 41923 backedges. 1 proven. 23751 refuted. 0 times theorem prover too weak. 18171 trivial. 0 not checked. [2025-03-03 09:00:20,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1332496226] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 09:00:20,498 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 09:00:20,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [129, 129, 129] total 256 [2025-03-03 09:00:20,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680177237] [2025-03-03 09:00:20,498 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 09:00:20,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 256 states [2025-03-03 09:00:20,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:00:20,505 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 256 interpolants. [2025-03-03 09:00:20,508 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32640, Invalid=32640, Unknown=0, NotChecked=0, Total=65280 [2025-03-03 09:00:20,509 INFO L87 Difference]: Start difference. First operand 1346 states and 1727 transitions. Second operand has 256 states, 256 states have (on average 3.01171875) internal successors, (771), 256 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)