./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-crafted/mapavg4.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-crafted/mapavg4.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 98bc833889bf97eabed50b7ee23613fe9d5db74d8eb864c2f87c567c38e52240 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-05 10:13:41,201 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-05 10:13:41,271 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-05 10:13:41,278 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-05 10:13:41,280 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-05 10:13:41,308 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-05 10:13:41,310 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-05 10:13:41,310 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-05 10:13:41,311 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-05 10:13:41,311 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-05 10:13:41,312 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-05 10:13:41,312 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-05 10:13:41,312 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-05 10:13:41,312 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-05 10:13:41,313 INFO L153 SettingsManager]: * Use SBE=true [2025-02-05 10:13:41,313 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-05 10:13:41,313 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-05 10:13:41,313 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-05 10:13:41,313 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-05 10:13:41,313 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-05 10:13:41,314 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-05 10:13:41,314 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-05 10:13:41,314 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-05 10:13:41,314 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-05 10:13:41,314 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-05 10:13:41,314 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-05 10:13:41,314 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-05 10:13:41,314 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-05 10:13:41,314 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-05 10:13:41,315 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-05 10:13:41,315 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-05 10:13:41,315 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-05 10:13:41,315 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 10:13:41,316 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-05 10:13:41,316 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-05 10:13:41,316 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-05 10:13:41,316 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-05 10:13:41,316 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-05 10:13:41,316 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-05 10:13:41,316 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-05 10:13:41,316 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-05 10:13:41,316 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-05 10:13:41,316 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-05 10:13:41,317 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 98bc833889bf97eabed50b7ee23613fe9d5db74d8eb864c2f87c567c38e52240 [2025-02-05 10:13:41,595 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-05 10:13:41,603 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-05 10:13:41,608 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-05 10:13:41,609 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-05 10:13:41,609 INFO L274 PluginConnector]: CDTParser initialized [2025-02-05 10:13:41,610 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-crafted/mapavg4.i [2025-02-05 10:13:42,886 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/4039e3d13/57781a389b634fa7a15dca26cc132e21/FLAG21c0a8644 [2025-02-05 10:13:43,124 INFO L384 CDTParser]: Found 1 translation units. [2025-02-05 10:13:43,125 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/array-crafted/mapavg4.i [2025-02-05 10:13:43,130 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/4039e3d13/57781a389b634fa7a15dca26cc132e21/FLAG21c0a8644 [2025-02-05 10:13:43,444 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/4039e3d13/57781a389b634fa7a15dca26cc132e21 [2025-02-05 10:13:43,446 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-05 10:13:43,447 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-05 10:13:43,449 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-05 10:13:43,449 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-05 10:13:43,452 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-05 10:13:43,453 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 10:13:43" (1/1) ... [2025-02-05 10:13:43,453 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@670e3347 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:13:43, skipping insertion in model container [2025-02-05 10:13:43,453 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 10:13:43" (1/1) ... [2025-02-05 10:13:43,466 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-05 10:13:43,609 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/array-crafted/mapavg4.i[1327,1340] [2025-02-05 10:13:43,612 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 10:13:43,622 INFO L200 MainTranslator]: Completed pre-run [2025-02-05 10:13:43,642 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/array-crafted/mapavg4.i[1327,1340] [2025-02-05 10:13:43,643 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 10:13:43,656 INFO L204 MainTranslator]: Completed translation [2025-02-05 10:13:43,657 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:13:43 WrapperNode [2025-02-05 10:13:43,657 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-05 10:13:43,658 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-05 10:13:43,658 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-05 10:13:43,658 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-05 10:13:43,663 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:13:43" (1/1) ... [2025-02-05 10:13:43,668 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:13:43" (1/1) ... [2025-02-05 10:13:43,680 INFO L138 Inliner]: procedures = 16, calls = 22, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 63 [2025-02-05 10:13:43,681 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-05 10:13:43,681 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-05 10:13:43,682 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-05 10:13:43,682 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-05 10:13:43,687 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:13:43" (1/1) ... [2025-02-05 10:13:43,688 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:13:43" (1/1) ... [2025-02-05 10:13:43,689 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:13:43" (1/1) ... [2025-02-05 10:13:43,699 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 5 writes are split as follows [0, 5]. [2025-02-05 10:13:43,699 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:13:43" (1/1) ... [2025-02-05 10:13:43,700 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:13:43" (1/1) ... [2025-02-05 10:13:43,704 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:13:43" (1/1) ... [2025-02-05 10:13:43,705 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:13:43" (1/1) ... [2025-02-05 10:13:43,706 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:13:43" (1/1) ... [2025-02-05 10:13:43,706 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:13:43" (1/1) ... [2025-02-05 10:13:43,708 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-05 10:13:43,708 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-05 10:13:43,709 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-05 10:13:43,709 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-05 10:13:43,709 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:13:43" (1/1) ... [2025-02-05 10:13:43,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 10:13:43,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:13:43,736 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-05 10:13:43,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-05 10:13:43,757 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-05 10:13:43,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-05 10:13:43,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-05 10:13:43,757 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-05 10:13:43,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-05 10:13:43,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-05 10:13:43,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-05 10:13:43,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-05 10:13:43,757 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-05 10:13:43,757 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-05 10:13:43,757 INFO L130 BoogieDeclarations]: Found specification of procedure mapavg [2025-02-05 10:13:43,757 INFO L138 BoogieDeclarations]: Found implementation of procedure mapavg [2025-02-05 10:13:43,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-05 10:13:43,833 INFO L257 CfgBuilder]: Building ICFG [2025-02-05 10:13:43,834 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-05 10:13:43,958 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L31: call ULTIMATE.dealloc(main_~#x~0#1.base, main_~#x~0#1.offset);havoc main_~#x~0#1.base, main_~#x~0#1.offset; [2025-02-05 10:13:43,996 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2025-02-05 10:13:43,996 INFO L308 CfgBuilder]: Performing block encoding [2025-02-05 10:13:44,003 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-05 10:13:44,004 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-05 10:13:44,004 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 10:13:44 BoogieIcfgContainer [2025-02-05 10:13:44,004 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-05 10:13:44,006 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-05 10:13:44,006 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-05 10:13:44,011 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-05 10:13:44,011 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.02 10:13:43" (1/3) ... [2025-02-05 10:13:44,012 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bd597b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 10:13:44, skipping insertion in model container [2025-02-05 10:13:44,012 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:13:43" (2/3) ... [2025-02-05 10:13:44,012 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bd597b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 10:13:44, skipping insertion in model container [2025-02-05 10:13:44,012 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 10:13:44" (3/3) ... [2025-02-05 10:13:44,013 INFO L128 eAbstractionObserver]: Analyzing ICFG mapavg4.i [2025-02-05 10:13:44,027 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-05 10:13:44,031 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG mapavg4.i that has 2 procedures, 21 locations, 1 initial locations, 3 loop locations, and 1 error locations. [2025-02-05 10:13:44,085 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-05 10:13:44,099 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;@67f1b9d1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-05 10:13:44,099 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-05 10:13:44,103 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 16 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-05 10:13:44,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-02-05 10:13:44,109 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:13:44,110 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:13:44,110 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:13:44,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:13:44,117 INFO L85 PathProgramCache]: Analyzing trace with hash -871894356, now seen corresponding path program 1 times [2025-02-05 10:13:44,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:13:44,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171426932] [2025-02-05 10:13:44,126 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:13:44,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:13:44,199 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-05 10:13:44,220 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-05 10:13:44,223 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:13:44,223 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:13:44,459 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-05 10:13:44,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:13:44,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171426932] [2025-02-05 10:13:44,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171426932] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 10:13:44,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 10:13:44,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-05 10:13:44,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423304028] [2025-02-05 10:13:44,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 10:13:44,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 10:13:44,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:13:44,480 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 10:13:44,480 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 10:13:44,481 INFO L87 Difference]: Start difference. First operand has 21 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 16 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2025-02-05 10:13:44,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:13:44,504 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions. [2025-02-05 10:13:44,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 10:13:44,506 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 24 [2025-02-05 10:13:44,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:13:44,511 INFO L225 Difference]: With dead ends: 40 [2025-02-05 10:13:44,511 INFO L226 Difference]: Without dead ends: 18 [2025-02-05 10:13:44,513 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 [2025-02-05 10:13:44,516 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 45 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 [2025-02-05 10:13:44,518 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 10:13:44,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2025-02-05 10:13:44,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2025-02-05 10:13:44,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-05 10:13:44,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2025-02-05 10:13:44,554 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 24 [2025-02-05 10:13:44,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:13:44,554 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2025-02-05 10:13:44,554 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2025-02-05 10:13:44,555 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2025-02-05 10:13:44,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-02-05 10:13:44,557 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:13:44,557 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:13:44,557 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-05 10:13:44,558 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:13:44,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:13:44,558 INFO L85 PathProgramCache]: Analyzing trace with hash -753694787, now seen corresponding path program 1 times [2025-02-05 10:13:44,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:13:44,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259508617] [2025-02-05 10:13:44,559 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:13:44,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:13:44,574 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-05 10:13:44,579 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-05 10:13:44,579 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:13:44,579 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:13:44,676 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-05 10:13:44,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:13:44,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259508617] [2025-02-05 10:13:44,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259508617] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:13:44,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545101544] [2025-02-05 10:13:44,677 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:13:44,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:13:44,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:13:44,686 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:13:44,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-05 10:13:44,746 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-05 10:13:44,785 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-05 10:13:44,785 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:13:44,785 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:13:44,787 INFO L256 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-05 10:13:44,793 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:13:44,816 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-02-05 10:13:44,820 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 10:13:44,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1545101544] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 10:13:44,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 10:13:44,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2025-02-05 10:13:44,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557605334] [2025-02-05 10:13:44,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 10:13:44,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 10:13:44,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:13:44,823 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 10:13:44,824 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-05 10:13:44,824 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-05 10:13:44,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:13:44,849 INFO L93 Difference]: Finished difference Result 32 states and 42 transitions. [2025-02-05 10:13:44,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 10:13:44,850 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25 [2025-02-05 10:13:44,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:13:44,851 INFO L225 Difference]: With dead ends: 32 [2025-02-05 10:13:44,851 INFO L226 Difference]: Without dead ends: 19 [2025-02-05 10:13:44,851 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-05 10:13:44,852 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 10:13:44,852 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 10:13:44,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2025-02-05 10:13:44,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2025-02-05 10:13:44,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-05 10:13:44,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2025-02-05 10:13:44,859 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 25 [2025-02-05 10:13:44,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:13:44,859 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2025-02-05 10:13:44,859 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-05 10:13:44,860 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2025-02-05 10:13:44,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2025-02-05 10:13:44,861 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:13:44,862 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:13:44,871 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-02-05 10:13:45,062 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:13:45,063 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:13:45,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:13:45,066 INFO L85 PathProgramCache]: Analyzing trace with hash 319447963, now seen corresponding path program 1 times [2025-02-05 10:13:45,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:13:45,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283154754] [2025-02-05 10:13:45,066 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:13:45,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:13:45,092 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-02-05 10:13:45,102 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-02-05 10:13:45,104 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:13:45,104 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:13:45,222 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-02-05 10:13:45,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:13:45,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283154754] [2025-02-05 10:13:45,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283154754] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:13:45,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1588651318] [2025-02-05 10:13:45,222 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:13:45,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:13:45,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:13:45,225 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:13:45,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-05 10:13:45,271 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-02-05 10:13:45,297 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-02-05 10:13:45,298 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:13:45,298 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:13:45,299 INFO L256 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-05 10:13:45,300 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:13:45,313 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-02-05 10:13:45,314 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 10:13:45,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1588651318] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 10:13:45,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 10:13:45,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2025-02-05 10:13:45,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508656141] [2025-02-05 10:13:45,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 10:13:45,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 10:13:45,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:13:45,315 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 10:13:45,316 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-05 10:13:45,316 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-05 10:13:45,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:13:45,332 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2025-02-05 10:13:45,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 10:13:45,334 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 28 [2025-02-05 10:13:45,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:13:45,335 INFO L225 Difference]: With dead ends: 30 [2025-02-05 10:13:45,335 INFO L226 Difference]: Without dead ends: 20 [2025-02-05 10:13:45,336 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-05 10:13:45,336 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 [2025-02-05 10:13:45,337 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] [2025-02-05 10:13:45,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2025-02-05 10:13:45,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2025-02-05 10:13:45,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-05 10:13:45,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2025-02-05 10:13:45,343 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 28 [2025-02-05 10:13:45,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:13:45,345 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2025-02-05 10:13:45,345 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-05 10:13:45,346 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2025-02-05 10:13:45,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-02-05 10:13:45,347 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:13:45,347 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:13:45,354 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-05 10:13:45,547 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:13:45,548 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:13:45,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:13:45,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1391912268, now seen corresponding path program 1 times [2025-02-05 10:13:45,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:13:45,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798160271] [2025-02-05 10:13:45,548 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:13:45,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:13:45,558 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-02-05 10:13:45,561 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-02-05 10:13:45,562 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:13:45,562 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:13:45,642 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-02-05 10:13:45,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:13:45,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798160271] [2025-02-05 10:13:45,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798160271] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:13:45,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444671244] [2025-02-05 10:13:45,643 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:13:45,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:13:45,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:13:45,645 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:13:45,648 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-05 10:13:45,697 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-02-05 10:13:45,731 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-02-05 10:13:45,732 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:13:45,732 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:13:45,733 INFO L256 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 10:13:45,735 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:13:45,762 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-02-05 10:13:45,762 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:13:45,811 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-02-05 10:13:45,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1444671244] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:13:45,812 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:13:45,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-02-05 10:13:45,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291939372] [2025-02-05 10:13:45,812 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:13:45,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-05 10:13:45,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:13:45,814 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-05 10:13:45,814 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-02-05 10:13:45,814 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2025-02-05 10:13:45,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:13:45,830 INFO L93 Difference]: Finished difference Result 39 states and 49 transitions. [2025-02-05 10:13:45,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-05 10:13:45,830 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 29 [2025-02-05 10:13:45,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:13:45,831 INFO L225 Difference]: With dead ends: 39 [2025-02-05 10:13:45,831 INFO L226 Difference]: Without dead ends: 23 [2025-02-05 10:13:45,831 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-02-05 10:13:45,832 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 10:13:45,832 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 74 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 10:13:45,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2025-02-05 10:13:45,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2025-02-05 10:13:45,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-05 10:13:45,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2025-02-05 10:13:45,836 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 29 [2025-02-05 10:13:45,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:13:45,836 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2025-02-05 10:13:45,836 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2025-02-05 10:13:45,836 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2025-02-05 10:13:45,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2025-02-05 10:13:45,837 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:13:45,837 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:13:45,844 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-05 10:13:46,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:13:46,039 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:13:46,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:13:46,040 INFO L85 PathProgramCache]: Analyzing trace with hash 739990779, now seen corresponding path program 2 times [2025-02-05 10:13:46,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:13:46,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603179898] [2025-02-05 10:13:46,040 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 10:13:46,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:13:46,059 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 32 statements into 2 equivalence classes. [2025-02-05 10:13:46,091 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 32 of 32 statements. [2025-02-05 10:13:46,091 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 10:13:46,091 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:13:46,183 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-05 10:13:46,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:13:46,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603179898] [2025-02-05 10:13:46,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603179898] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:13:46,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1145084806] [2025-02-05 10:13:46,185 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 10:13:46,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:13:46,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:13:46,188 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:13:46,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-05 10:13:46,252 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 32 statements into 2 equivalence classes. [2025-02-05 10:13:46,281 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 32 of 32 statements. [2025-02-05 10:13:46,281 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 10:13:46,281 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:13:46,283 INFO L256 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-05 10:13:46,284 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:13:46,335 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-02-05 10:13:46,339 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:13:46,440 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-02-05 10:13:46,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1145084806] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:13:46,441 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:13:46,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2025-02-05 10:13:46,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439475802] [2025-02-05 10:13:46,442 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:13:46,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-05 10:13:46,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:13:46,443 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-05 10:13:46,444 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2025-02-05 10:13:46,444 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 14 states have internal predecessors, (34), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2025-02-05 10:13:46,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:13:46,487 INFO L93 Difference]: Finished difference Result 46 states and 63 transitions. [2025-02-05 10:13:46,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-02-05 10:13:46,488 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 14 states have internal predecessors, (34), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) Word has length 32 [2025-02-05 10:13:46,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:13:46,489 INFO L225 Difference]: With dead ends: 46 [2025-02-05 10:13:46,489 INFO L226 Difference]: Without dead ends: 30 [2025-02-05 10:13:46,489 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2025-02-05 10:13:46,490 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 10:13:46,490 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 155 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 10:13:46,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2025-02-05 10:13:46,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2025-02-05 10:13:46,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 25 states have (on average 1.12) internal successors, (28), 25 states have internal predecessors, (28), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-05 10:13:46,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2025-02-05 10:13:46,497 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 32 [2025-02-05 10:13:46,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:13:46,498 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2025-02-05 10:13:46,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 14 states have internal predecessors, (34), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2025-02-05 10:13:46,498 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2025-02-05 10:13:46,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2025-02-05 10:13:46,499 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:13:46,499 INFO L218 NwaCegarLoop]: trace histogram [10, 6, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:13:46,507 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-02-05 10:13:46,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:13:46,700 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:13:46,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:13:46,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1065502521, now seen corresponding path program 3 times [2025-02-05 10:13:46,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:13:46,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127795834] [2025-02-05 10:13:46,701 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 10:13:46,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:13:46,722 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 41 statements into 6 equivalence classes. [2025-02-05 10:13:46,731 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 22 of 41 statements. [2025-02-05 10:13:46,731 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-05 10:13:46,732 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:13:46,785 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 22 proven. 3 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2025-02-05 10:13:46,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:13:46,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127795834] [2025-02-05 10:13:46,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127795834] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:13:46,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585754657] [2025-02-05 10:13:46,786 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 10:13:46,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:13:46,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:13:46,788 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:13:46,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-05 10:13:46,848 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 41 statements into 6 equivalence classes. [2025-02-05 10:13:46,866 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 22 of 41 statements. [2025-02-05 10:13:46,866 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-05 10:13:46,866 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:13:46,867 INFO L256 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-05 10:13:46,869 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:13:46,884 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 22 proven. 3 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2025-02-05 10:13:46,884 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:13:46,924 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 22 proven. 3 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2025-02-05 10:13:46,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585754657] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:13:46,925 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:13:46,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2025-02-05 10:13:46,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428776737] [2025-02-05 10:13:46,925 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:13:46,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-05 10:13:46,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:13:46,926 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-05 10:13:46,926 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2025-02-05 10:13:46,926 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2025-02-05 10:13:46,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:13:46,943 INFO L93 Difference]: Finished difference Result 50 states and 63 transitions. [2025-02-05 10:13:46,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-05 10:13:46,944 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 41 [2025-02-05 10:13:46,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:13:46,945 INFO L225 Difference]: With dead ends: 50 [2025-02-05 10:13:46,946 INFO L226 Difference]: Without dead ends: 34 [2025-02-05 10:13:46,946 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2025-02-05 10:13:46,947 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 10:13:46,947 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 74 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 10:13:46,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2025-02-05 10:13:46,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2025-02-05 10:13:46,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 29 states have (on average 1.103448275862069) internal successors, (32), 29 states have internal predecessors, (32), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-05 10:13:46,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2025-02-05 10:13:46,957 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 41 [2025-02-05 10:13:46,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:13:46,958 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2025-02-05 10:13:46,958 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2025-02-05 10:13:46,958 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2025-02-05 10:13:46,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2025-02-05 10:13:46,960 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:13:46,960 INFO L218 NwaCegarLoop]: trace histogram [18, 10, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:13:46,967 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-05 10:13:47,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:13:47,161 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:13:47,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:13:47,162 INFO L85 PathProgramCache]: Analyzing trace with hash 571879865, now seen corresponding path program 4 times [2025-02-05 10:13:47,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:13:47,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278777686] [2025-02-05 10:13:47,162 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 10:13:47,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:13:47,181 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 53 statements into 2 equivalence classes. [2025-02-05 10:13:47,207 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 53 of 53 statements. [2025-02-05 10:13:47,208 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-05 10:13:47,208 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:13:47,554 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2025-02-05 10:13:47,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:13:47,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278777686] [2025-02-05 10:13:47,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278777686] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:13:47,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308976672] [2025-02-05 10:13:47,555 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 10:13:47,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:13:47,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:13:47,558 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:13:47,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-05 10:13:47,628 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 53 statements into 2 equivalence classes. [2025-02-05 10:13:47,681 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 53 of 53 statements. [2025-02-05 10:13:47,681 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-05 10:13:47,681 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:13:47,686 INFO L256 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-02-05 10:13:47,689 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:13:47,733 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2025-02-05 10:13:47,735 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:13:48,006 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2025-02-05 10:13:48,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1308976672] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:13:48,007 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:13:48,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2025-02-05 10:13:48,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97466805] [2025-02-05 10:13:48,008 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:13:48,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-02-05 10:13:48,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:13:48,010 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-02-05 10:13:48,010 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2025-02-05 10:13:48,011 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand has 25 states, 25 states have (on average 1.68) internal successors, (42), 25 states have internal predecessors, (42), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2025-02-05 10:13:48,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:13:48,055 INFO L93 Difference]: Finished difference Result 67 states and 86 transitions. [2025-02-05 10:13:48,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-02-05 10:13:48,056 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.68) internal successors, (42), 25 states have internal predecessors, (42), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 53 [2025-02-05 10:13:48,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:13:48,058 INFO L225 Difference]: With dead ends: 67 [2025-02-05 10:13:48,058 INFO L226 Difference]: Without dead ends: 46 [2025-02-05 10:13:48,059 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2025-02-05 10:13:48,060 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 10:13:48,060 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 110 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 10:13:48,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2025-02-05 10:13:48,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2025-02-05 10:13:48,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 41 states have (on average 1.0731707317073171) internal successors, (44), 41 states have internal predecessors, (44), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-05 10:13:48,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2025-02-05 10:13:48,070 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 53 [2025-02-05 10:13:48,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:13:48,071 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2025-02-05 10:13:48,071 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.68) internal successors, (42), 25 states have internal predecessors, (42), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2025-02-05 10:13:48,071 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2025-02-05 10:13:48,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2025-02-05 10:13:48,073 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:13:48,073 INFO L218 NwaCegarLoop]: trace histogram [22, 18, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:13:48,082 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-05 10:13:48,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2025-02-05 10:13:48,274 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:13:48,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:13:48,275 INFO L85 PathProgramCache]: Analyzing trace with hash 609228025, now seen corresponding path program 5 times [2025-02-05 10:13:48,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:13:48,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310726137] [2025-02-05 10:13:48,275 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 10:13:48,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:13:48,298 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 65 statements into 12 equivalence classes. [2025-02-05 10:13:48,423 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) and asserted 54 of 65 statements. [2025-02-05 10:13:48,423 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2025-02-05 10:13:48,423 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:13:48,498 INFO L134 CoverageAnalysis]: Checked inductivity of 473 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 472 trivial. 0 not checked. [2025-02-05 10:13:48,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:13:48,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310726137] [2025-02-05 10:13:48,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310726137] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:13:48,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [650987197] [2025-02-05 10:13:48,498 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 10:13:48,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:13:48,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:13:48,502 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:13:48,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-05 10:13:48,581 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 65 statements into 12 equivalence classes. [2025-02-05 10:13:49,494 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) and asserted 54 of 65 statements. [2025-02-05 10:13:49,494 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2025-02-05 10:13:49,494 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:13:49,499 INFO L256 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 10:13:49,501 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:13:49,515 INFO L134 CoverageAnalysis]: Checked inductivity of 473 backedges. 104 proven. 1 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked. [2025-02-05 10:13:49,516 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:13:49,542 INFO L134 CoverageAnalysis]: Checked inductivity of 473 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 472 trivial. 0 not checked. [2025-02-05 10:13:49,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [650987197] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:13:49,542 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:13:49,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2025-02-05 10:13:49,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838658765] [2025-02-05 10:13:49,542 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:13:49,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 10:13:49,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:13:49,543 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 10:13:49,543 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-02-05 10:13:49,543 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-02-05 10:13:49,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:13:49,555 INFO L93 Difference]: Finished difference Result 64 states and 71 transitions. [2025-02-05 10:13:49,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-05 10:13:49,556 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 65 [2025-02-05 10:13:49,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:13:49,557 INFO L225 Difference]: With dead ends: 64 [2025-02-05 10:13:49,557 INFO L226 Difference]: Without dead ends: 49 [2025-02-05 10:13:49,557 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-02-05 10:13:49,557 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 10:13:49,557 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 37 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 10:13:49,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2025-02-05 10:13:49,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2025-02-05 10:13:49,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 44 states have (on average 1.0681818181818181) internal successors, (47), 44 states have internal predecessors, (47), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-05 10:13:49,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2025-02-05 10:13:49,563 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 65 [2025-02-05 10:13:49,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:13:49,563 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2025-02-05 10:13:49,564 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-02-05 10:13:49,564 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2025-02-05 10:13:49,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-02-05 10:13:49,564 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:13:49,565 INFO L218 NwaCegarLoop]: trace histogram [22, 18, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:13:49,575 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-05 10:13:49,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:13:49,769 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:13:49,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:13:49,769 INFO L85 PathProgramCache]: Analyzing trace with hash -241379764, now seen corresponding path program 6 times [2025-02-05 10:13:49,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:13:49,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853956298] [2025-02-05 10:13:49,770 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-05 10:13:49,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:13:49,793 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 68 statements into 12 equivalence classes. [2025-02-05 10:13:49,892 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 44 of 68 statements. [2025-02-05 10:13:49,892 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2025-02-05 10:13:49,892 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:13:50,048 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 472 trivial. 0 not checked. [2025-02-05 10:13:50,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:13:50,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853956298] [2025-02-05 10:13:50,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853956298] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:13:50,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242863363] [2025-02-05 10:13:50,049 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-05 10:13:50,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:13:50,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:13:50,051 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:13:50,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-05 10:13:50,132 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 68 statements into 12 equivalence classes. [2025-02-05 10:13:50,245 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 44 of 68 statements. [2025-02-05 10:13:50,245 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2025-02-05 10:13:50,245 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:13:50,247 INFO L256 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-05 10:13:50,251 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:13:50,291 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 104 proven. 10 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked. [2025-02-05 10:13:50,292 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:13:50,360 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 472 trivial. 0 not checked. [2025-02-05 10:13:50,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1242863363] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:13:50,362 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:13:50,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2025-02-05 10:13:50,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930118439] [2025-02-05 10:13:50,362 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:13:50,363 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-05 10:13:50,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:13:50,365 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-05 10:13:50,365 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=92, Unknown=0, NotChecked=0, Total=182 [2025-02-05 10:13:50,366 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-02-05 10:13:50,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:13:50,394 INFO L93 Difference]: Finished difference Result 70 states and 80 transitions. [2025-02-05 10:13:50,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-05 10:13:50,396 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 68 [2025-02-05 10:13:50,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:13:50,396 INFO L225 Difference]: With dead ends: 70 [2025-02-05 10:13:50,396 INFO L226 Difference]: Without dead ends: 55 [2025-02-05 10:13:50,397 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 128 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=92, Unknown=0, NotChecked=0, Total=182 [2025-02-05 10:13:50,397 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 10:13:50,397 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 88 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 10:13:50,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2025-02-05 10:13:50,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2025-02-05 10:13:50,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 50 states have (on average 1.06) internal successors, (53), 50 states have internal predecessors, (53), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-05 10:13:50,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2025-02-05 10:13:50,408 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 68 [2025-02-05 10:13:50,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:13:50,408 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2025-02-05 10:13:50,408 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-02-05 10:13:50,408 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2025-02-05 10:13:50,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2025-02-05 10:13:50,410 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:13:50,410 INFO L218 NwaCegarLoop]: trace histogram [22, 18, 10, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:13:50,420 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-02-05 10:13:50,610 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:13:50,611 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:13:50,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:13:50,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1179608876, now seen corresponding path program 7 times [2025-02-05 10:13:50,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:13:50,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918821265] [2025-02-05 10:13:50,612 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-05 10:13:50,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:13:50,641 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 74 statements into 1 equivalence classes. [2025-02-05 10:13:50,664 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 74 of 74 statements. [2025-02-05 10:13:50,665 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:13:50,665 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:13:51,405 INFO L134 CoverageAnalysis]: Checked inductivity of 527 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2025-02-05 10:13:51,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:13:51,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918821265] [2025-02-05 10:13:51,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918821265] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:13:51,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998936253] [2025-02-05 10:13:51,406 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-05 10:13:51,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:13:51,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:13:51,408 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:13:51,410 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-02-05 10:13:51,498 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 74 statements into 1 equivalence classes. [2025-02-05 10:13:51,560 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 74 of 74 statements. [2025-02-05 10:13:51,561 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:13:51,561 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:13:51,563 INFO L256 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-02-05 10:13:51,566 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:13:51,625 INFO L134 CoverageAnalysis]: Checked inductivity of 527 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2025-02-05 10:13:51,627 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:13:52,459 INFO L134 CoverageAnalysis]: Checked inductivity of 527 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2025-02-05 10:13:52,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1998936253] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:13:52,460 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:13:52,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2025-02-05 10:13:52,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347227539] [2025-02-05 10:13:52,460 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:13:52,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2025-02-05 10:13:52,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:13:52,462 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2025-02-05 10:13:52,463 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2025-02-05 10:13:52,463 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand has 49 states, 49 states have (on average 1.346938775510204) internal successors, (66), 49 states have internal predecessors, (66), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2025-02-05 10:13:52,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:13:52,534 INFO L93 Difference]: Finished difference Result 109 states and 140 transitions. [2025-02-05 10:13:52,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2025-02-05 10:13:52,536 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.346938775510204) internal successors, (66), 49 states have internal predecessors, (66), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 74 [2025-02-05 10:13:52,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:13:52,537 INFO L225 Difference]: With dead ends: 109 [2025-02-05 10:13:52,537 INFO L226 Difference]: Without dead ends: 79 [2025-02-05 10:13:52,538 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2025-02-05 10:13:52,539 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 92 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 [2025-02-05 10:13:52,539 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 92 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 10:13:52,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2025-02-05 10:13:52,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2025-02-05 10:13:52,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 74 states have (on average 1.0405405405405406) internal successors, (77), 74 states have internal predecessors, (77), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-05 10:13:52,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2025-02-05 10:13:52,549 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 74 [2025-02-05 10:13:52,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:13:52,550 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2025-02-05 10:13:52,550 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.346938775510204) internal successors, (66), 49 states have internal predecessors, (66), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2025-02-05 10:13:52,550 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2025-02-05 10:13:52,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2025-02-05 10:13:52,553 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:13:52,553 INFO L218 NwaCegarLoop]: trace histogram [46, 18, 10, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:13:52,562 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-02-05 10:13:52,754 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:13:52,754 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:13:52,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:13:52,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1554018132, now seen corresponding path program 8 times [2025-02-05 10:13:52,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:13:52,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236135792] [2025-02-05 10:13:52,756 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 10:13:52,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:13:52,793 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 98 statements into 2 equivalence classes. [2025-02-05 10:13:52,828 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 98 of 98 statements. [2025-02-05 10:13:52,832 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 10:13:52,833 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:13:54,920 INFO L134 CoverageAnalysis]: Checked inductivity of 1355 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2025-02-05 10:13:54,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:13:54,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236135792] [2025-02-05 10:13:54,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236135792] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:13:54,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781079563] [2025-02-05 10:13:54,921 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 10:13:54,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:13:54,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:13:54,925 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:13:54,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-02-05 10:13:55,045 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 98 statements into 2 equivalence classes. [2025-02-05 10:13:55,121 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 98 of 98 statements. [2025-02-05 10:13:55,122 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 10:13:55,122 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:13:55,131 INFO L256 TraceCheckSpWp]: Trace formula consists of 697 conjuncts, 48 conjuncts are in the unsatisfiable core [2025-02-05 10:13:55,134 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:13:55,258 INFO L134 CoverageAnalysis]: Checked inductivity of 1355 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2025-02-05 10:13:55,259 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:13:57,735 INFO L134 CoverageAnalysis]: Checked inductivity of 1355 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2025-02-05 10:13:57,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1781079563] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:13:57,736 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:13:57,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 97 [2025-02-05 10:13:57,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201646767] [2025-02-05 10:13:57,736 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:13:57,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2025-02-05 10:13:57,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:13:57,738 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2025-02-05 10:13:57,742 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2025-02-05 10:13:57,742 INFO L87 Difference]: Start difference. First operand 79 states and 83 transitions. Second operand has 97 states, 97 states have (on average 1.175257731958763) internal successors, (114), 97 states have internal predecessors, (114), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2025-02-05 10:13:57,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:13:57,869 INFO L93 Difference]: Finished difference Result 157 states and 212 transitions. [2025-02-05 10:13:57,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2025-02-05 10:13:57,870 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 1.175257731958763) internal successors, (114), 97 states have internal predecessors, (114), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 98 [2025-02-05 10:13:57,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:13:57,872 INFO L225 Difference]: With dead ends: 157 [2025-02-05 10:13:57,873 INFO L226 Difference]: Without dead ends: 127 [2025-02-05 10:13:57,875 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2025-02-05 10:13:57,876 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 10:13:57,876 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 110 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 10:13:57,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2025-02-05 10:13:57,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2025-02-05 10:13:57,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 122 states have (on average 1.0245901639344261) internal successors, (125), 122 states have internal predecessors, (125), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-05 10:13:57,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 131 transitions. [2025-02-05 10:13:57,893 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 131 transitions. Word has length 98 [2025-02-05 10:13:57,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:13:57,894 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 131 transitions. [2025-02-05 10:13:57,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 1.175257731958763) internal successors, (114), 97 states have internal predecessors, (114), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2025-02-05 10:13:57,894 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 131 transitions. [2025-02-05 10:13:57,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2025-02-05 10:13:57,896 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:13:57,897 INFO L218 NwaCegarLoop]: trace histogram [94, 18, 10, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:13:57,905 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-02-05 10:13:58,097 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:13:58,098 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:13:58,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:13:58,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1886544812, now seen corresponding path program 9 times [2025-02-05 10:13:58,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:13:58,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402363809] [2025-02-05 10:13:58,099 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 10:13:58,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:13:58,156 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 146 statements into 48 equivalence classes. [2025-02-05 10:13:58,189 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 38 of 146 statements. [2025-02-05 10:13:58,189 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-02-05 10:13:58,189 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:13:58,301 INFO L134 CoverageAnalysis]: Checked inductivity of 4739 backedges. 102 proven. 21 refuted. 0 times theorem prover too weak. 4616 trivial. 0 not checked. [2025-02-05 10:13:58,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:13:58,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402363809] [2025-02-05 10:13:58,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402363809] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:13:58,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136903777] [2025-02-05 10:13:58,303 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 10:13:58,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:13:58,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:13:58,305 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:13:58,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-02-05 10:13:58,495 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 146 statements into 48 equivalence classes. [2025-02-05 10:13:58,522 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 38 of 146 statements. [2025-02-05 10:13:58,522 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-02-05 10:13:58,522 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:13:58,523 INFO L256 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-05 10:13:58,532 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:13:58,553 INFO L134 CoverageAnalysis]: Checked inductivity of 4739 backedges. 102 proven. 21 refuted. 0 times theorem prover too weak. 4616 trivial. 0 not checked. [2025-02-05 10:13:58,553 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:13:58,652 INFO L134 CoverageAnalysis]: Checked inductivity of 4739 backedges. 102 proven. 21 refuted. 0 times theorem prover too weak. 4616 trivial. 0 not checked. [2025-02-05 10:13:58,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1136903777] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:13:58,653 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:13:58,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2025-02-05 10:13:58,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084692354] [2025-02-05 10:13:58,653 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:13:58,654 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-02-05 10:13:58,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:13:58,654 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-02-05 10:13:58,654 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2025-02-05 10:13:58,654 INFO L87 Difference]: Start difference. First operand 127 states and 131 transitions. Second operand has 17 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2025-02-05 10:13:58,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:13:58,676 INFO L93 Difference]: Finished difference Result 164 states and 181 transitions. [2025-02-05 10:13:58,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-02-05 10:13:58,677 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 146 [2025-02-05 10:13:58,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:13:58,678 INFO L225 Difference]: With dead ends: 164 [2025-02-05 10:13:58,678 INFO L226 Difference]: Without dead ends: 135 [2025-02-05 10:13:58,679 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 284 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2025-02-05 10:13:58,679 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 10:13:58,679 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 92 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 10:13:58,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2025-02-05 10:13:58,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2025-02-05 10:13:58,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 130 states have (on average 1.023076923076923) internal successors, (133), 130 states have internal predecessors, (133), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-05 10:13:58,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 139 transitions. [2025-02-05 10:13:58,687 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 139 transitions. Word has length 146 [2025-02-05 10:13:58,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:13:58,688 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 139 transitions. [2025-02-05 10:13:58,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2025-02-05 10:13:58,688 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 139 transitions. [2025-02-05 10:13:58,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2025-02-05 10:13:58,689 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:13:58,689 INFO L218 NwaCegarLoop]: trace histogram [94, 42, 10, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:13:58,697 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-02-05 10:13:58,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-02-05 10:13:58,890 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:13:58,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:13:58,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1600941996, now seen corresponding path program 10 times [2025-02-05 10:13:58,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:13:58,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136843145] [2025-02-05 10:13:58,891 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 10:13:58,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:13:58,938 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 170 statements into 2 equivalence classes. [2025-02-05 10:13:58,995 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 170 of 170 statements. [2025-02-05 10:13:58,996 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-05 10:13:58,996 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:14:04,389 INFO L134 CoverageAnalysis]: Checked inductivity of 5519 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 1054 trivial. 0 not checked. [2025-02-05 10:14:04,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:14:04,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136843145] [2025-02-05 10:14:04,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136843145] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:14:04,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617037796] [2025-02-05 10:14:04,389 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 10:14:04,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:14:04,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:14:04,391 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:14:04,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-02-05 10:14:04,583 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 170 statements into 2 equivalence classes. [2025-02-05 10:14:04,724 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 170 of 170 statements. [2025-02-05 10:14:04,724 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-05 10:14:04,724 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:14:04,730 INFO L256 TraceCheckSpWp]: Trace formula consists of 1249 conjuncts, 96 conjuncts are in the unsatisfiable core [2025-02-05 10:14:04,733 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:14:04,891 INFO L134 CoverageAnalysis]: Checked inductivity of 5519 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 1054 trivial. 0 not checked. [2025-02-05 10:14:04,891 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:14:13,547 INFO L134 CoverageAnalysis]: Checked inductivity of 5519 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 1054 trivial. 0 not checked. [2025-02-05 10:14:13,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [617037796] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:14:13,548 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:14:13,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97, 97] total 193 [2025-02-05 10:14:13,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882044480] [2025-02-05 10:14:13,548 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:14:13,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 193 states [2025-02-05 10:14:13,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:14:13,552 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2025-02-05 10:14:13,558 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2025-02-05 10:14:13,558 INFO L87 Difference]: Start difference. First operand 135 states and 139 transitions. Second operand has 193 states, 193 states have (on average 1.0880829015544042) internal successors, (210), 193 states have internal predecessors, (210), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2025-02-05 10:14:13,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:14:13,816 INFO L93 Difference]: Finished difference Result 269 states and 372 transitions. [2025-02-05 10:14:13,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2025-02-05 10:14:13,817 INFO L78 Accepts]: Start accepts. Automaton has has 193 states, 193 states have (on average 1.0880829015544042) internal successors, (210), 193 states have internal predecessors, (210), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 170 [2025-02-05 10:14:13,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:14:13,818 INFO L225 Difference]: With dead ends: 269 [2025-02-05 10:14:13,818 INFO L226 Difference]: Without dead ends: 231 [2025-02-05 10:14:13,821 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2025-02-05 10:14:13,822 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 110 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 [2025-02-05 10:14:13,822 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 110 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 10:14:13,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2025-02-05 10:14:13,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2025-02-05 10:14:13,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 226 states have (on average 1.0132743362831858) internal successors, (229), 226 states have internal predecessors, (229), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-05 10:14:13,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 235 transitions. [2025-02-05 10:14:13,834 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 235 transitions. Word has length 170 [2025-02-05 10:14:13,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:14:13,834 INFO L471 AbstractCegarLoop]: Abstraction has 231 states and 235 transitions. [2025-02-05 10:14:13,834 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 193 states, 193 states have (on average 1.0880829015544042) internal successors, (210), 193 states have internal predecessors, (210), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2025-02-05 10:14:13,835 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 235 transitions. [2025-02-05 10:14:13,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2025-02-05 10:14:13,837 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:14:13,837 INFO L218 NwaCegarLoop]: trace histogram [190, 42, 10, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:14:13,847 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-02-05 10:14:14,037 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:14:14,038 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:14:14,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:14:14,038 INFO L85 PathProgramCache]: Analyzing trace with hash 340399532, now seen corresponding path program 11 times [2025-02-05 10:14:14,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:14:14,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180645439] [2025-02-05 10:14:14,038 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 10:14:14,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:14:14,112 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 266 statements into 96 equivalence classes. [2025-02-05 10:14:19,742 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 95 check-sat command(s) and asserted 255 of 266 statements. [2025-02-05 10:14:19,742 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 95 check-sat command(s) [2025-02-05 10:14:19,742 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:14:20,463 INFO L134 CoverageAnalysis]: Checked inductivity of 19199 backedges. 0 proven. 559 refuted. 0 times theorem prover too weak. 18640 trivial. 0 not checked. [2025-02-05 10:14:20,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:14:20,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180645439] [2025-02-05 10:14:20,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180645439] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:14:20,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875392648] [2025-02-05 10:14:20,464 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 10:14:20,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:14:20,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:14:20,468 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:14:20,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-02-05 10:14:20,781 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 266 statements into 96 equivalence classes.