./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-patterns/array27_pattern.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 551b0097 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-patterns/array27_pattern.c -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 8e2a4cc1bd1815c470836bbbcc9d3775eac69b651b7231d974ae63a065851dd1 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-08 22:32:42,593 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-08 22:32:42,645 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-08 22:32:42,653 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-08 22:32:42,656 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-08 22:32:42,679 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-08 22:32:42,680 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-08 22:32:42,680 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-08 22:32:42,681 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-08 22:32:42,681 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-08 22:32:42,681 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-08 22:32:42,681 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-08 22:32:42,681 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-08 22:32:42,682 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-08 22:32:42,682 INFO L153 SettingsManager]: * Use SBE=true [2025-01-08 22:32:42,682 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-08 22:32:42,682 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-08 22:32:42,683 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-08 22:32:42,683 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-08 22:32:42,683 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-08 22:32:42,683 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-08 22:32:42,683 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-08 22:32:42,683 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-08 22:32:42,683 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-08 22:32:42,683 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-08 22:32:42,683 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-08 22:32:42,683 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-08 22:32:42,683 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-08 22:32:42,683 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-08 22:32:42,684 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-08 22:32:42,684 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-08 22:32:42,684 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-08 22:32:42,684 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-08 22:32:42,684 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-08 22:32:42,684 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-08 22:32:42,684 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-08 22:32:42,684 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-08 22:32:42,685 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-08 22:32:42,685 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-08 22:32:42,685 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-08 22:32:42,685 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-08 22:32:42,685 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-08 22:32:42,685 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-08 22:32:42,685 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-08 22:32:42,685 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-08 22:32:42,685 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-08 22:32:42,685 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-08 22:32:42,685 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-08 22:32:42,685 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 -> 8e2a4cc1bd1815c470836bbbcc9d3775eac69b651b7231d974ae63a065851dd1 [2025-01-08 22:32:42,899 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-08 22:32:42,904 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-08 22:32:42,905 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-08 22:32:42,908 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-08 22:32:42,909 INFO L274 PluginConnector]: CDTParser initialized [2025-01-08 22:32:42,909 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-patterns/array27_pattern.c [2025-01-08 22:32:44,030 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d32acfbec/200b0b7bf0ee4b4a96b682c1cb4386d0/FLAGc48e45fb2 [2025-01-08 22:32:44,199 INFO L384 CDTParser]: Found 1 translation units. [2025-01-08 22:32:44,199 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/array-patterns/array27_pattern.c [2025-01-08 22:32:44,205 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d32acfbec/200b0b7bf0ee4b4a96b682c1cb4386d0/FLAGc48e45fb2 [2025-01-08 22:32:44,233 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d32acfbec/200b0b7bf0ee4b4a96b682c1cb4386d0 [2025-01-08 22:32:44,238 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-08 22:32:44,239 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-08 22:32:44,240 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-08 22:32:44,240 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-08 22:32:44,243 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-08 22:32:44,245 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.01 10:32:44" (1/1) ... [2025-01-08 22:32:44,245 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b13a36e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:32:44, skipping insertion in model container [2025-01-08 22:32:44,245 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.01 10:32:44" (1/1) ... [2025-01-08 22:32:44,256 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-08 22:32:44,356 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-patterns/array27_pattern.c[1253,1266] [2025-01-08 22:32:44,371 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-08 22:32:44,378 INFO L200 MainTranslator]: Completed pre-run [2025-01-08 22:32:44,386 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-patterns/array27_pattern.c[1253,1266] [2025-01-08 22:32:44,393 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-08 22:32:44,406 INFO L204 MainTranslator]: Completed translation [2025-01-08 22:32:44,407 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:32:44 WrapperNode [2025-01-08 22:32:44,407 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-08 22:32:44,408 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-08 22:32:44,408 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-08 22:32:44,408 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-08 22:32:44,413 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:32:44" (1/1) ... [2025-01-08 22:32:44,420 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:32:44" (1/1) ... [2025-01-08 22:32:44,431 INFO L138 Inliner]: procedures = 16, calls = 15, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 59 [2025-01-08 22:32:44,431 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-08 22:32:44,431 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-08 22:32:44,432 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-08 22:32:44,432 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-08 22:32:44,437 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:32:44" (1/1) ... [2025-01-08 22:32:44,437 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:32:44" (1/1) ... [2025-01-08 22:32:44,443 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:32:44" (1/1) ... [2025-01-08 22:32:44,451 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [2, 3]. 60 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2025-01-08 22:32:44,452 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:32:44" (1/1) ... [2025-01-08 22:32:44,452 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:32:44" (1/1) ... [2025-01-08 22:32:44,457 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:32:44" (1/1) ... [2025-01-08 22:32:44,460 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:32:44" (1/1) ... [2025-01-08 22:32:44,462 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:32:44" (1/1) ... [2025-01-08 22:32:44,464 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:32:44" (1/1) ... [2025-01-08 22:32:44,467 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:32:44" (1/1) ... [2025-01-08 22:32:44,468 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-08 22:32:44,468 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-08 22:32:44,468 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-08 22:32:44,468 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-08 22:32:44,469 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:32:44" (1/1) ... [2025-01-08 22:32:44,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-08 22:32:44,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:32:44,498 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) [2025-01-08 22:32:44,508 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 [2025-01-08 22:32:44,525 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-08 22:32:44,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-08 22:32:44,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-01-08 22:32:44,526 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-01-08 22:32:44,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-01-08 22:32:44,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-01-08 22:32:44,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-08 22:32:44,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-08 22:32:44,527 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-01-08 22:32:44,527 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-01-08 22:32:44,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-01-08 22:32:44,576 INFO L234 CfgBuilder]: Building ICFG [2025-01-08 22:32:44,577 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-08 22:32:44,655 INFO L? ?]: Removed 13 outVars from TransFormulas that were not future-live. [2025-01-08 22:32:44,655 INFO L283 CfgBuilder]: Performing block encoding [2025-01-08 22:32:44,661 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-08 22:32:44,661 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-08 22:32:44,662 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.01 10:32:44 BoogieIcfgContainer [2025-01-08 22:32:44,662 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-08 22:32:44,663 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-08 22:32:44,663 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-08 22:32:44,666 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-08 22:32:44,666 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.01 10:32:44" (1/3) ... [2025-01-08 22:32:44,667 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27ec9eea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.01 10:32:44, skipping insertion in model container [2025-01-08 22:32:44,667 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:32:44" (2/3) ... [2025-01-08 22:32:44,667 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27ec9eea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.01 10:32:44, skipping insertion in model container [2025-01-08 22:32:44,667 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.01 10:32:44" (3/3) ... [2025-01-08 22:32:44,668 INFO L128 eAbstractionObserver]: Analyzing ICFG array27_pattern.c [2025-01-08 22:32:44,677 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-08 22:32:44,679 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG array27_pattern.c that has 1 procedures, 17 locations, 1 initial locations, 4 loop locations, and 1 error locations. [2025-01-08 22:32:44,707 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-08 22:32:44,718 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;@7673f5f9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-08 22:32:44,718 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-08 22:32:44,720 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 16 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:32:44,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-01-08 22:32:44,723 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:32:44,724 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:32:44,724 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:32:44,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:32:44,727 INFO L85 PathProgramCache]: Analyzing trace with hash 119884309, now seen corresponding path program 1 times [2025-01-08 22:32:44,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:32:44,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521886073] [2025-01-08 22:32:44,732 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:32:44,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:32:44,784 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-01-08 22:32:44,794 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-01-08 22:32:44,795 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:32:44,795 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:32:44,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:32:44,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:32:44,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521886073] [2025-01-08 22:32:44,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521886073] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-08 22:32:44,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-08 22:32:44,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-08 22:32:44,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067178428] [2025-01-08 22:32:44,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-08 22:32:44,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-01-08 22:32:44,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:32:44,861 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-01-08 22:32:44,862 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-08 22:32:44,863 INFO L87 Difference]: Start difference. First operand has 17 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 16 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:32:44,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:32:44,870 INFO L93 Difference]: Finished difference Result 31 states and 42 transitions. [2025-01-08 22:32:44,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-08 22:32:44,871 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2025-01-08 22:32:44,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:32:44,874 INFO L225 Difference]: With dead ends: 31 [2025-01-08 22:32:44,874 INFO L226 Difference]: Without dead ends: 13 [2025-01-08 22:32:44,876 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-08 22:32:44,877 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:32:44,878 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:32:44,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2025-01-08 22:32:44,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2025-01-08 22:32:44,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:32:44,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 17 transitions. [2025-01-08 22:32:44,894 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 17 transitions. Word has length 8 [2025-01-08 22:32:44,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:32:44,894 INFO L471 AbstractCegarLoop]: Abstraction has 13 states and 17 transitions. [2025-01-08 22:32:44,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:32:44,895 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 17 transitions. [2025-01-08 22:32:44,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-01-08 22:32:44,895 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:32:44,895 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:32:44,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-08 22:32:44,895 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:32:44,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:32:44,896 INFO L85 PathProgramCache]: Analyzing trace with hash 177142611, now seen corresponding path program 1 times [2025-01-08 22:32:44,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:32:44,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812610563] [2025-01-08 22:32:44,896 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:32:44,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:32:44,902 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-01-08 22:32:44,917 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-01-08 22:32:44,918 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:32:44,918 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:32:45,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:32:45,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:32:45,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812610563] [2025-01-08 22:32:45,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812610563] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-08 22:32:45,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-08 22:32:45,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-08 22:32:45,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834630780] [2025-01-08 22:32:45,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-08 22:32:45,048 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-08 22:32:45,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:32:45,048 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-08 22:32:45,048 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-01-08 22:32:45,049 INFO L87 Difference]: Start difference. First operand 13 states and 17 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:32:45,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:32:45,091 INFO L93 Difference]: Finished difference Result 24 states and 34 transitions. [2025-01-08 22:32:45,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-08 22:32:45,092 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2025-01-08 22:32:45,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:32:45,092 INFO L225 Difference]: With dead ends: 24 [2025-01-08 22:32:45,092 INFO L226 Difference]: Without dead ends: 19 [2025-01-08 22:32:45,092 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-01-08 22:32:45,093 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 29 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:32:45,093 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 8 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:32:45,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2025-01-08 22:32:45,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 15. [2025-01-08 22:32:45,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:32:45,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions. [2025-01-08 22:32:45,096 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 19 transitions. Word has length 8 [2025-01-08 22:32:45,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:32:45,096 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 19 transitions. [2025-01-08 22:32:45,097 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:32:45,097 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 19 transitions. [2025-01-08 22:32:45,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-01-08 22:32:45,097 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:32:45,097 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:32:45,097 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-08 22:32:45,097 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:32:45,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:32:45,098 INFO L85 PathProgramCache]: Analyzing trace with hash -735823366, now seen corresponding path program 1 times [2025-01-08 22:32:45,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:32:45,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913761667] [2025-01-08 22:32:45,098 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:32:45,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:32:45,104 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-01-08 22:32:45,110 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-01-08 22:32:45,110 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:32:45,110 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:32:45,164 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-08 22:32:45,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:32:45,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913761667] [2025-01-08 22:32:45,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913761667] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-08 22:32:45,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-08 22:32:45,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-08 22:32:45,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822607930] [2025-01-08 22:32:45,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-08 22:32:45,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-08 22:32:45,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:32:45,166 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-08 22:32:45,166 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-01-08 22:32:45,166 INFO L87 Difference]: Start difference. First operand 15 states and 19 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:32:45,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:32:45,225 INFO L93 Difference]: Finished difference Result 33 states and 47 transitions. [2025-01-08 22:32:45,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-08 22:32:45,226 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2025-01-08 22:32:45,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:32:45,227 INFO L225 Difference]: With dead ends: 33 [2025-01-08 22:32:45,227 INFO L226 Difference]: Without dead ends: 23 [2025-01-08 22:32:45,227 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-01-08 22:32:45,227 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 9 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:32:45,227 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 17 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:32:45,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2025-01-08 22:32:45,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 18. [2025-01-08 22:32:45,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:32:45,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2025-01-08 22:32:45,234 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 12 [2025-01-08 22:32:45,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:32:45,235 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2025-01-08 22:32:45,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:32:45,235 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2025-01-08 22:32:45,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-01-08 22:32:45,235 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:32:45,235 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:32:45,235 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-08 22:32:45,236 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:32:45,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:32:45,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1713258743, now seen corresponding path program 1 times [2025-01-08 22:32:45,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:32:45,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496053328] [2025-01-08 22:32:45,236 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:32:45,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:32:45,246 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-01-08 22:32:45,255 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-01-08 22:32:45,255 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:32:45,255 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-08 22:32:45,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1773604121] [2025-01-08 22:32:45,257 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:32:45,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:32:45,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:32:45,261 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) [2025-01-08 22:32:45,263 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 [2025-01-08 22:32:45,294 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-01-08 22:32:45,307 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-01-08 22:32:45,307 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:32:45,307 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:32:45,309 INFO L256 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-01-08 22:32:45,313 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:32:45,378 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-01-08 22:32:45,563 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:32:45,563 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:32:45,741 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 33 [2025-01-08 22:32:45,746 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 53 [2025-01-08 22:32:45,829 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:32:45,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:32:45,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496053328] [2025-01-08 22:32:45,830 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-08 22:32:45,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1773604121] [2025-01-08 22:32:45,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1773604121] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:32:45,830 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-08 22:32:45,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2025-01-08 22:32:45,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266952531] [2025-01-08 22:32:45,830 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-08 22:32:45,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-01-08 22:32:45,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:32:45,831 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-01-08 22:32:45,831 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2025-01-08 22:32:45,831 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 19 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 19 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:32:46,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:32:46,649 INFO L93 Difference]: Finished difference Result 79 states and 121 transitions. [2025-01-08 22:32:46,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2025-01-08 22:32:46,649 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 19 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2025-01-08 22:32:46,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:32:46,651 INFO L225 Difference]: With dead ends: 79 [2025-01-08 22:32:46,651 INFO L226 Difference]: Without dead ends: 67 [2025-01-08 22:32:46,651 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=388, Invalid=1018, Unknown=0, NotChecked=0, Total=1406 [2025-01-08 22:32:46,652 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 70 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-08 22:32:46,652 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 38 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-08 22:32:46,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2025-01-08 22:32:46,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 50. [2025-01-08 22:32:46,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.489795918367347) internal successors, (73), 49 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:32:46,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 73 transitions. [2025-01-08 22:32:46,673 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 73 transitions. Word has length 16 [2025-01-08 22:32:46,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:32:46,673 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 73 transitions. [2025-01-08 22:32:46,673 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 19 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:32:46,673 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 73 transitions. [2025-01-08 22:32:46,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-01-08 22:32:46,674 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:32:46,674 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:32:46,680 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-01-08 22:32:46,874 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:32:46,878 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:32:46,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:32:46,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1569503957, now seen corresponding path program 2 times [2025-01-08 22:32:46,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:32:46,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874243904] [2025-01-08 22:32:46,879 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:32:46,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:32:46,887 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 17 statements into 2 equivalence classes. [2025-01-08 22:32:46,903 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-01-08 22:32:46,903 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:32:46,903 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:32:46,977 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:32:46,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:32:46,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874243904] [2025-01-08 22:32:46,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874243904] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:32:46,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981746473] [2025-01-08 22:32:46,977 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:32:46,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:32:46,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:32:46,981 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) [2025-01-08 22:32:46,983 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 [2025-01-08 22:32:47,019 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 17 statements into 2 equivalence classes. [2025-01-08 22:32:47,029 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-01-08 22:32:47,029 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:32:47,030 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:32:47,030 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-08 22:32:47,031 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:32:47,077 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-08 22:32:47,077 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:32:47,108 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-08 22:32:47,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1981746473] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:32:47,108 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:32:47,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2025-01-08 22:32:47,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835070019] [2025-01-08 22:32:47,108 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:32:47,109 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-01-08 22:32:47,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:32:47,109 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-01-08 22:32:47,109 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2025-01-08 22:32:47,109 INFO L87 Difference]: Start difference. First operand 50 states and 73 transitions. Second operand has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:32:47,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:32:47,335 INFO L93 Difference]: Finished difference Result 136 states and 207 transitions. [2025-01-08 22:32:47,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-01-08 22:32:47,336 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2025-01-08 22:32:47,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:32:47,336 INFO L225 Difference]: With dead ends: 136 [2025-01-08 22:32:47,337 INFO L226 Difference]: Without dead ends: 97 [2025-01-08 22:32:47,337 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 26 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2025-01-08 22:32:47,337 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 44 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:32:47,337 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 33 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:32:47,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2025-01-08 22:32:47,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 66. [2025-01-08 22:32:47,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.523076923076923) internal successors, (99), 65 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:32:47,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 99 transitions. [2025-01-08 22:32:47,362 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 99 transitions. Word has length 17 [2025-01-08 22:32:47,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:32:47,362 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 99 transitions. [2025-01-08 22:32:47,362 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:32:47,363 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 99 transitions. [2025-01-08 22:32:47,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-01-08 22:32:47,363 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:32:47,363 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:32:47,370 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 [2025-01-08 22:32:47,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:32:47,564 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:32:47,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:32:47,565 INFO L85 PathProgramCache]: Analyzing trace with hash 2128548099, now seen corresponding path program 1 times [2025-01-08 22:32:47,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:32:47,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851701299] [2025-01-08 22:32:47,565 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:32:47,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:32:47,573 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-01-08 22:32:47,579 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-01-08 22:32:47,579 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:32:47,579 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:32:47,654 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-01-08 22:32:47,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:32:47,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851701299] [2025-01-08 22:32:47,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851701299] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:32:47,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [865944148] [2025-01-08 22:32:47,655 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:32:47,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:32:47,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:32:47,657 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) [2025-01-08 22:32:47,659 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 [2025-01-08 22:32:47,683 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-01-08 22:32:47,694 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-01-08 22:32:47,694 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:32:47,694 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:32:47,695 INFO L256 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-01-08 22:32:47,695 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:32:47,727 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-08 22:32:47,728 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:32:47,755 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-08 22:32:47,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [865944148] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:32:47,756 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:32:47,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2025-01-08 22:32:47,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390618173] [2025-01-08 22:32:47,756 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:32:47,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-01-08 22:32:47,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:32:47,757 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-01-08 22:32:47,758 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2025-01-08 22:32:47,758 INFO L87 Difference]: Start difference. First operand 66 states and 99 transitions. Second operand has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:32:47,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:32:47,884 INFO L93 Difference]: Finished difference Result 113 states and 171 transitions. [2025-01-08 22:32:47,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-01-08 22:32:47,885 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2025-01-08 22:32:47,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:32:47,886 INFO L225 Difference]: With dead ends: 113 [2025-01-08 22:32:47,886 INFO L226 Difference]: Without dead ends: 48 [2025-01-08 22:32:47,886 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=123, Invalid=297, Unknown=0, NotChecked=0, Total=420 [2025-01-08 22:32:47,887 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 55 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:32:47,888 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 24 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:32:47,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2025-01-08 22:32:47,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 29. [2025-01-08 22:32:47,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.25) internal successors, (35), 28 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:32:47,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2025-01-08 22:32:47,899 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 21 [2025-01-08 22:32:47,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:32:47,899 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2025-01-08 22:32:47,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:32:47,899 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2025-01-08 22:32:47,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2025-01-08 22:32:47,900 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:32:47,900 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:32:47,906 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-01-08 22:32:48,104 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:32:48,104 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:32:48,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:32:48,105 INFO L85 PathProgramCache]: Analyzing trace with hash -356092313, now seen corresponding path program 2 times [2025-01-08 22:32:48,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:32:48,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062689474] [2025-01-08 22:32:48,105 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:32:48,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:32:48,114 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 28 statements into 2 equivalence classes. [2025-01-08 22:32:48,124 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 28 of 28 statements. [2025-01-08 22:32:48,125 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:32:48,125 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:32:48,224 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-01-08 22:32:48,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:32:48,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062689474] [2025-01-08 22:32:48,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062689474] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:32:48,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38188038] [2025-01-08 22:32:48,224 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:32:48,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:32:48,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:32:48,228 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) [2025-01-08 22:32:48,229 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 [2025-01-08 22:32:48,263 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 28 statements into 2 equivalence classes. [2025-01-08 22:32:48,277 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 28 of 28 statements. [2025-01-08 22:32:48,277 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:32:48,277 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:32:48,279 INFO L256 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-08 22:32:48,280 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:32:48,330 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-01-08 22:32:48,330 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:32:48,374 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-01-08 22:32:48,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [38188038] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:32:48,374 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:32:48,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2025-01-08 22:32:48,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777241176] [2025-01-08 22:32:48,375 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:32:48,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-01-08 22:32:48,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:32:48,375 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-01-08 22:32:48,375 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2025-01-08 22:32:48,375 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:32:48,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:32:48,546 INFO L93 Difference]: Finished difference Result 52 states and 64 transitions. [2025-01-08 22:32:48,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-01-08 22:32:48,547 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2025-01-08 22:32:48,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:32:48,547 INFO L225 Difference]: With dead ends: 52 [2025-01-08 22:32:48,547 INFO L226 Difference]: Without dead ends: 49 [2025-01-08 22:32:48,547 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 48 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2025-01-08 22:32:48,548 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 44 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:32:48,548 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 26 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:32:48,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2025-01-08 22:32:48,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 33. [2025-01-08 22:32:48,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.25) internal successors, (40), 32 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:32:48,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2025-01-08 22:32:48,556 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 28 [2025-01-08 22:32:48,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:32:48,556 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2025-01-08 22:32:48,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:32:48,556 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2025-01-08 22:32:48,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2025-01-08 22:32:48,557 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:32:48,557 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:32:48,563 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-01-08 22:32:48,757 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2025-01-08 22:32:48,758 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:32:48,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:32:48,758 INFO L85 PathProgramCache]: Analyzing trace with hash -390712671, now seen corresponding path program 3 times [2025-01-08 22:32:48,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:32:48,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174554792] [2025-01-08 22:32:48,758 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:32:48,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:32:48,764 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 32 statements into 6 equivalence classes. [2025-01-08 22:32:48,780 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 32 of 32 statements. [2025-01-08 22:32:48,780 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-01-08 22:32:48,781 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-08 22:32:48,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1805458240] [2025-01-08 22:32:48,781 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:32:48,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:32:48,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:32:48,784 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) [2025-01-08 22:32:48,785 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 [2025-01-08 22:32:48,819 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 32 statements into 6 equivalence classes. [2025-01-08 22:32:48,922 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 32 of 32 statements. [2025-01-08 22:32:48,923 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-01-08 22:32:48,923 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:32:48,924 WARN L254 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 74 conjuncts are in the unsatisfiable core [2025-01-08 22:32:48,927 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:32:48,964 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-01-08 22:32:49,021 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2025-01-08 22:32:49,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:32:49,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:32:49,185 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:32:49,185 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2025-01-08 22:32:49,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:32:49,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:32:49,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:32:49,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:32:49,297 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:32:49,297 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2025-01-08 22:32:49,700 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 2 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:32:49,700 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:32:52,225 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 34 [2025-01-08 22:32:52,230 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2025-01-08 22:32:52,477 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:32:52,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:32:52,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174554792] [2025-01-08 22:32:52,477 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-08 22:32:52,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805458240] [2025-01-08 22:32:52,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1805458240] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:32:52,477 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-08 22:32:52,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 24] total 45 [2025-01-08 22:32:52,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854350416] [2025-01-08 22:32:52,477 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-08 22:32:52,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2025-01-08 22:32:52,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:32:52,478 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2025-01-08 22:32:52,479 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=383, Invalid=1597, Unknown=0, NotChecked=0, Total=1980 [2025-01-08 22:32:52,479 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand has 45 states, 45 states have (on average 1.3333333333333333) internal successors, (60), 45 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:33:03,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:33:03,922 INFO L93 Difference]: Finished difference Result 273 states and 387 transitions. [2025-01-08 22:33:03,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2025-01-08 22:33:03,922 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.3333333333333333) internal successors, (60), 45 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2025-01-08 22:33:03,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:33:03,925 INFO L225 Difference]: With dead ends: 273 [2025-01-08 22:33:03,925 INFO L226 Difference]: Without dead ends: 260 [2025-01-08 22:33:03,933 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10729 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=5475, Invalid=20607, Unknown=0, NotChecked=0, Total=26082 [2025-01-08 22:33:03,934 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 233 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 1517 mSolverCounterSat, 430 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 1947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 430 IncrementalHoareTripleChecker+Valid, 1517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2025-01-08 22:33:03,934 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 78 Invalid, 1947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [430 Valid, 1517 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2025-01-08 22:33:03,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2025-01-08 22:33:03,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 157. [2025-01-08 22:33:03,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 156 states have (on average 1.4038461538461537) internal successors, (219), 156 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:33:03,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 219 transitions. [2025-01-08 22:33:03,993 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 219 transitions. Word has length 32 [2025-01-08 22:33:03,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:33:03,993 INFO L471 AbstractCegarLoop]: Abstraction has 157 states and 219 transitions. [2025-01-08 22:33:03,993 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 1.3333333333333333) internal successors, (60), 45 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:33:03,993 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 219 transitions. [2025-01-08 22:33:03,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2025-01-08 22:33:03,994 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:33:03,994 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:33:04,001 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-01-08 22:33:04,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:33:04,194 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:33:04,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:33:04,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1592246113, now seen corresponding path program 4 times [2025-01-08 22:33:04,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:33:04,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402580110] [2025-01-08 22:33:04,195 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:33:04,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:33:04,205 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 33 statements into 2 equivalence classes. [2025-01-08 22:33:04,216 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 30 of 33 statements. [2025-01-08 22:33:04,218 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-08 22:33:04,218 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:33:04,286 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 17 proven. 24 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-01-08 22:33:04,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:33:04,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402580110] [2025-01-08 22:33:04,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402580110] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:33:04,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853769651] [2025-01-08 22:33:04,286 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:33:04,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:33:04,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:33:04,289 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) [2025-01-08 22:33:04,290 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 [2025-01-08 22:33:04,321 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 33 statements into 2 equivalence classes. [2025-01-08 22:33:04,331 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 30 of 33 statements. [2025-01-08 22:33:04,331 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-08 22:33:04,331 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:33:04,333 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-08 22:33:04,334 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:33:04,380 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 19 proven. 22 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-01-08 22:33:04,380 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:33:04,415 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 19 proven. 22 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-01-08 22:33:04,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1853769651] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:33:04,415 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:33:04,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2025-01-08 22:33:04,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445834701] [2025-01-08 22:33:04,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:33:04,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-01-08 22:33:04,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:33:04,417 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-01-08 22:33:04,417 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2025-01-08 22:33:04,417 INFO L87 Difference]: Start difference. First operand 157 states and 219 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:33:04,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:33:04,553 INFO L93 Difference]: Finished difference Result 460 states and 645 transitions. [2025-01-08 22:33:04,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-08 22:33:04,553 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2025-01-08 22:33:04,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:33:04,557 INFO L225 Difference]: With dead ends: 460 [2025-01-08 22:33:04,557 INFO L226 Difference]: Without dead ends: 323 [2025-01-08 22:33:04,558 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 57 SyntacticMatches, 5 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2025-01-08 22:33:04,558 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 28 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:33:04,558 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 23 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:33:04,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2025-01-08 22:33:04,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 252. [2025-01-08 22:33:04,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 251 states have (on average 1.3784860557768925) internal successors, (346), 251 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:33:04,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 346 transitions. [2025-01-08 22:33:04,629 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 346 transitions. Word has length 33 [2025-01-08 22:33:04,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:33:04,629 INFO L471 AbstractCegarLoop]: Abstraction has 252 states and 346 transitions. [2025-01-08 22:33:04,629 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:33:04,629 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 346 transitions. [2025-01-08 22:33:04,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2025-01-08 22:33:04,630 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:33:04,630 INFO L218 NwaCegarLoop]: trace histogram [6, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:33:04,636 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-01-08 22:33:04,835 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,SelfDestructingSolverStorable8 [2025-01-08 22:33:04,835 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:33:04,835 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:33:04,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1281801765, now seen corresponding path program 5 times [2025-01-08 22:33:04,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:33:04,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434479373] [2025-01-08 22:33:04,835 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-08 22:33:04,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:33:04,841 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 36 statements into 7 equivalence classes. [2025-01-08 22:33:04,855 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) and asserted 36 of 36 statements. [2025-01-08 22:33:04,855 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2025-01-08 22:33:04,855 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:33:04,935 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 22 proven. 14 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-01-08 22:33:04,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:33:04,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434479373] [2025-01-08 22:33:04,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434479373] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:33:04,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1467262395] [2025-01-08 22:33:04,936 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-08 22:33:04,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:33:04,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:33:04,938 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) [2025-01-08 22:33:04,942 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 [2025-01-08 22:33:04,979 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 36 statements into 7 equivalence classes. [2025-01-08 22:33:05,026 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) and asserted 36 of 36 statements. [2025-01-08 22:33:05,027 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2025-01-08 22:33:05,027 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:33:05,027 INFO L256 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-08 22:33:05,028 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:33:05,084 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 24 proven. 12 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-01-08 22:33:05,084 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:33:05,115 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 22 proven. 14 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-01-08 22:33:05,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1467262395] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:33:05,116 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:33:05,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2025-01-08 22:33:05,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979939182] [2025-01-08 22:33:05,116 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:33:05,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-01-08 22:33:05,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:33:05,117 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-01-08 22:33:05,117 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2025-01-08 22:33:05,117 INFO L87 Difference]: Start difference. First operand 252 states and 346 transitions. Second operand has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:33:05,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:33:05,546 INFO L93 Difference]: Finished difference Result 541 states and 784 transitions. [2025-01-08 22:33:05,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2025-01-08 22:33:05,546 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2025-01-08 22:33:05,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:33:05,548 INFO L225 Difference]: With dead ends: 541 [2025-01-08 22:33:05,548 INFO L226 Difference]: Without dead ends: 321 [2025-01-08 22:33:05,548 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 74 SyntacticMatches, 3 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 436 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=494, Invalid=1146, Unknown=0, NotChecked=0, Total=1640 [2025-01-08 22:33:05,549 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 123 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:33:05,549 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 29 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:33:05,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2025-01-08 22:33:05,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 219. [2025-01-08 22:33:05,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 218 states have (on average 1.3944954128440368) internal successors, (304), 218 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:33:05,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 304 transitions. [2025-01-08 22:33:05,609 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 304 transitions. Word has length 36 [2025-01-08 22:33:05,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:33:05,609 INFO L471 AbstractCegarLoop]: Abstraction has 219 states and 304 transitions. [2025-01-08 22:33:05,609 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:33:05,609 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 304 transitions. [2025-01-08 22:33:05,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2025-01-08 22:33:05,610 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:33:05,610 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:33:05,616 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-01-08 22:33:05,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:33:05,810 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:33:05,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:33:05,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1546317813, now seen corresponding path program 6 times [2025-01-08 22:33:05,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:33:05,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6131389] [2025-01-08 22:33:05,811 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-08 22:33:05,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:33:05,817 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 39 statements into 8 equivalence classes. [2025-01-08 22:33:05,827 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) and asserted 20 of 39 statements. [2025-01-08 22:33:05,827 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2025-01-08 22:33:05,827 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:33:05,924 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 27 proven. 20 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2025-01-08 22:33:05,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:33:05,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6131389] [2025-01-08 22:33:05,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6131389] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:33:05,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231183993] [2025-01-08 22:33:05,925 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-08 22:33:05,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:33:05,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:33:05,927 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) [2025-01-08 22:33:05,928 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 [2025-01-08 22:33:05,961 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 39 statements into 8 equivalence classes. [2025-01-08 22:33:05,978 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) and asserted 20 of 39 statements. [2025-01-08 22:33:05,978 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2025-01-08 22:33:05,978 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:33:05,979 INFO L256 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-08 22:33:05,980 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:33:06,173 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 9 proven. 38 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2025-01-08 22:33:06,173 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:33:06,230 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 27 proven. 20 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2025-01-08 22:33:06,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1231183993] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:33:06,230 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:33:06,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 9] total 20 [2025-01-08 22:33:06,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046887669] [2025-01-08 22:33:06,230 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:33:06,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-01-08 22:33:06,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:33:06,230 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-01-08 22:33:06,231 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2025-01-08 22:33:06,231 INFO L87 Difference]: Start difference. First operand 219 states and 304 transitions. Second operand has 20 states, 20 states have (on average 2.45) internal successors, (49), 20 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:33:06,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:33:06,812 INFO L93 Difference]: Finished difference Result 276 states and 380 transitions. [2025-01-08 22:33:06,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2025-01-08 22:33:06,812 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.45) internal successors, (49), 20 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2025-01-08 22:33:06,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:33:06,817 INFO L225 Difference]: With dead ends: 276 [2025-01-08 22:33:06,818 INFO L226 Difference]: Without dead ends: 240 [2025-01-08 22:33:06,818 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 68 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1026 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=626, Invalid=2566, Unknown=0, NotChecked=0, Total=3192 [2025-01-08 22:33:06,819 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 82 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:33:06,819 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 41 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:33:06,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2025-01-08 22:33:06,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 156. [2025-01-08 22:33:06,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 155 states have (on average 1.2903225806451613) internal successors, (200), 155 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:33:06,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 200 transitions. [2025-01-08 22:33:06,864 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 200 transitions. Word has length 39 [2025-01-08 22:33:06,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:33:06,864 INFO L471 AbstractCegarLoop]: Abstraction has 156 states and 200 transitions. [2025-01-08 22:33:06,864 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.45) internal successors, (49), 20 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:33:06,864 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 200 transitions. [2025-01-08 22:33:06,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2025-01-08 22:33:06,865 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:33:06,865 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 6, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:33:06,871 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 [2025-01-08 22:33:07,065 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:33:07,066 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:33:07,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:33:07,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1157458641, now seen corresponding path program 7 times [2025-01-08 22:33:07,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:33:07,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345805161] [2025-01-08 22:33:07,066 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-08 22:33:07,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:33:07,071 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 49 statements into 1 equivalence classes. [2025-01-08 22:33:07,078 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 49 of 49 statements. [2025-01-08 22:33:07,078 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:33:07,078 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:33:07,248 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 20 proven. 99 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2025-01-08 22:33:07,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:33:07,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345805161] [2025-01-08 22:33:07,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345805161] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:33:07,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [876423579] [2025-01-08 22:33:07,248 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-08 22:33:07,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:33:07,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:33:07,251 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) [2025-01-08 22:33:07,252 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 [2025-01-08 22:33:07,296 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 49 statements into 1 equivalence classes. [2025-01-08 22:33:07,313 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 49 of 49 statements. [2025-01-08 22:33:07,313 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:33:07,313 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:33:07,314 INFO L256 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-08 22:33:07,315 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:33:07,387 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 116 proven. 2 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2025-01-08 22:33:07,387 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:33:07,454 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 82 proven. 36 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2025-01-08 22:33:07,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [876423579] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:33:07,454 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:33:07,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 17 [2025-01-08 22:33:07,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444366797] [2025-01-08 22:33:07,455 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:33:07,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-01-08 22:33:07,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:33:07,455 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-01-08 22:33:07,455 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2025-01-08 22:33:07,456 INFO L87 Difference]: Start difference. First operand 156 states and 200 transitions. Second operand has 17 states, 17 states have (on average 3.823529411764706) internal successors, (65), 17 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:33:07,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:33:07,893 INFO L93 Difference]: Finished difference Result 284 states and 374 transitions. [2025-01-08 22:33:07,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-01-08 22:33:07,893 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.823529411764706) internal successors, (65), 17 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2025-01-08 22:33:07,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:33:07,897 INFO L225 Difference]: With dead ends: 284 [2025-01-08 22:33:07,897 INFO L226 Difference]: Without dead ends: 183 [2025-01-08 22:33:07,898 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 88 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 343 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=316, Invalid=1166, Unknown=0, NotChecked=0, Total=1482 [2025-01-08 22:33:07,898 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 65 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-08 22:33:07,898 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 40 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 458 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-08 22:33:07,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2025-01-08 22:33:07,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 121. [2025-01-08 22:33:07,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 120 states have (on average 1.2666666666666666) internal successors, (152), 120 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:33:07,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 152 transitions. [2025-01-08 22:33:07,937 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 152 transitions. Word has length 49 [2025-01-08 22:33:07,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:33:07,938 INFO L471 AbstractCegarLoop]: Abstraction has 121 states and 152 transitions. [2025-01-08 22:33:07,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.823529411764706) internal successors, (65), 17 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:33:07,938 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 152 transitions. [2025-01-08 22:33:07,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2025-01-08 22:33:07,938 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:33:07,938 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 6, 5, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:33:07,944 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-01-08 22:33:08,143 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:33:08,143 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:33:08,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:33:08,143 INFO L85 PathProgramCache]: Analyzing trace with hash -259442795, now seen corresponding path program 8 times [2025-01-08 22:33:08,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:33:08,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885573550] [2025-01-08 22:33:08,143 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:33:08,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:33:08,153 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 50 statements into 2 equivalence classes. [2025-01-08 22:33:08,168 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 50 of 50 statements. [2025-01-08 22:33:08,169 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:33:08,169 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:33:08,393 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 10 proven. 70 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2025-01-08 22:33:08,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:33:08,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885573550] [2025-01-08 22:33:08,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885573550] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:33:08,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1649229629] [2025-01-08 22:33:08,393 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:33:08,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:33:08,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:33:08,395 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) [2025-01-08 22:33:08,396 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 [2025-01-08 22:33:08,435 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 50 statements into 2 equivalence classes. [2025-01-08 22:33:08,454 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 50 of 50 statements. [2025-01-08 22:33:08,454 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:33:08,454 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:33:08,455 INFO L256 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-08 22:33:08,456 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:33:08,608 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 8 proven. 70 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2025-01-08 22:33:08,608 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:33:08,676 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 8 proven. 70 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2025-01-08 22:33:08,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1649229629] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:33:08,676 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:33:08,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2025-01-08 22:33:08,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061963166] [2025-01-08 22:33:08,676 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:33:08,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-01-08 22:33:08,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:33:08,677 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-01-08 22:33:08,677 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2025-01-08 22:33:08,677 INFO L87 Difference]: Start difference. First operand 121 states and 152 transitions. Second operand has 16 states, 16 states have (on average 3.0625) internal successors, (49), 16 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:33:09,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:33:09,012 INFO L93 Difference]: Finished difference Result 171 states and 220 transitions. [2025-01-08 22:33:09,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2025-01-08 22:33:09,013 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.0625) internal successors, (49), 16 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2025-01-08 22:33:09,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:33:09,014 INFO L225 Difference]: With dead ends: 171 [2025-01-08 22:33:09,014 INFO L226 Difference]: Without dead ends: 163 [2025-01-08 22:33:09,015 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 89 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=411, Invalid=1311, Unknown=0, NotChecked=0, Total=1722 [2025-01-08 22:33:09,015 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 44 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:33:09,015 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 43 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:33:09,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2025-01-08 22:33:09,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 76. [2025-01-08 22:33:09,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.24) internal successors, (93), 75 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:33:09,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 93 transitions. [2025-01-08 22:33:09,055 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 93 transitions. Word has length 50 [2025-01-08 22:33:09,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:33:09,056 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 93 transitions. [2025-01-08 22:33:09,056 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.0625) internal successors, (49), 16 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:33:09,056 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 93 transitions. [2025-01-08 22:33:09,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2025-01-08 22:33:09,056 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:33:09,056 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 6, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:33:09,063 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-01-08 22:33:09,257 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-01-08 22:33:09,257 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:33:09,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:33:09,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1038133541, now seen corresponding path program 9 times [2025-01-08 22:33:09,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:33:09,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652911750] [2025-01-08 22:33:09,258 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:33:09,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:33:09,264 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 56 statements into 12 equivalence classes. [2025-01-08 22:33:09,328 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) and asserted 56 of 56 statements. [2025-01-08 22:33:09,328 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2025-01-08 22:33:09,328 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-08 22:33:09,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [310084263] [2025-01-08 22:33:09,329 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:33:09,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:33:09,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:33:09,331 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) [2025-01-08 22:33:09,334 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 [2025-01-08 22:33:09,375 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 56 statements into 12 equivalence classes. [2025-01-08 22:33:10,343 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) and asserted 54 of 56 statements. [2025-01-08 22:33:10,343 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2025-01-08 22:33:10,343 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:33:10,348 WARN L254 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 131 conjuncts are in the unsatisfiable core [2025-01-08 22:33:10,352 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:33:10,385 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-01-08 22:33:10,427 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2025-01-08 22:33:10,483 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:33:10,484 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2025-01-08 22:33:10,565 INFO L349 Elim1Store]: treesize reduction 48, result has 48.9 percent of original size [2025-01-08 22:33:10,566 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 70 [2025-01-08 22:33:10,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:33:10,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:33:10,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:33:10,720 INFO L349 Elim1Store]: treesize reduction 72, result has 17.2 percent of original size [2025-01-08 22:33:10,721 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 81 treesize of output 89 [2025-01-08 22:33:10,916 INFO L349 Elim1Store]: treesize reduction 146, result has 13.1 percent of original size [2025-01-08 22:33:10,916 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 89 treesize of output 100 [2025-01-08 22:33:11,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:33:11,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:33:11,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:33:11,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:33:11,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:33:11,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:33:11,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:33:11,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:33:11,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:33:11,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:33:11,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:33:11,225 INFO L349 Elim1Store]: treesize reduction 62, result has 25.3 percent of original size [2025-01-08 22:33:11,226 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 17 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 17 case distinctions, treesize of input 94 treesize of output 114 [2025-01-08 22:33:11,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:33:11,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:33:11,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:33:11,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:33:11,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:33:11,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:33:11,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:33:11,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:33:11,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:33:11,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:33:11,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:33:11,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:33:11,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:33:11,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:33:11,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:33:11,502 INFO L349 Elim1Store]: treesize reduction 84, result has 21.5 percent of original size [2025-01-08 22:33:11,503 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 22 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 23 case distinctions, treesize of input 113 treesize of output 138 [2025-01-08 22:33:11,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:33:11,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:33:11,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:33:11,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:33:11,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:33:11,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:33:11,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:33:11,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:33:11,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:33:11,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:33:11,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:33:11,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:33:11,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:33:11,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:33:11,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:33:11,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:33:11,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:33:11,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:33:11,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:33:11,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:33:11,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:33:11,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:33:11,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:33:11,956 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:33:11,956 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 88 treesize of output 108 [2025-01-08 22:33:13,164 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 10 proven. 205 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-08 22:33:13,165 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:33:21,800 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 110 treesize of output 104 [2025-01-08 22:33:21,808 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:33:21,808 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 12522 treesize of output 11370 [2025-01-08 22:33:22,478 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 0 proven. 215 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-08 22:33:22,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:33:22,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652911750] [2025-01-08 22:33:22,478 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-08 22:33:22,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310084263] [2025-01-08 22:33:22,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [310084263] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:33:22,478 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-08 22:33:22,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 38] total 73 [2025-01-08 22:33:22,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208726745] [2025-01-08 22:33:22,478 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-08 22:33:22,479 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2025-01-08 22:33:22,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:33:22,480 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2025-01-08 22:33:22,481 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=617, Invalid=4639, Unknown=0, NotChecked=0, Total=5256 [2025-01-08 22:33:22,481 INFO L87 Difference]: Start difference. First operand 76 states and 93 transitions. Second operand has 73 states, 73 states have (on average 1.4794520547945205) internal successors, (108), 73 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:34:20,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:34:20,999 INFO L93 Difference]: Finished difference Result 362 states and 478 transitions. [2025-01-08 22:34:21,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2025-01-08 22:34:21,000 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 1.4794520547945205) internal successors, (108), 73 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2025-01-08 22:34:21,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:34:21,001 INFO L225 Difference]: With dead ends: 362 [2025-01-08 22:34:21,001 INFO L226 Difference]: Without dead ends: 298 [2025-01-08 22:34:21,006 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10192 ImplicationChecksByTransitivity, 59.9s TimeCoverageRelationStatistics Valid=5145, Invalid=29637, Unknown=0, NotChecked=0, Total=34782 [2025-01-08 22:34:21,006 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 120 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 3295 mSolverCounterSat, 598 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 3893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 598 IncrementalHoareTripleChecker+Valid, 3295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2025-01-08 22:34:21,006 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 121 Invalid, 3893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [598 Valid, 3295 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2025-01-08 22:34:21,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2025-01-08 22:34:21,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 191. [2025-01-08 22:34:21,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 190 states have (on average 1.268421052631579) internal successors, (241), 190 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:34:21,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 241 transitions. [2025-01-08 22:34:21,131 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 241 transitions. Word has length 56 [2025-01-08 22:34:21,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:34:21,131 INFO L471 AbstractCegarLoop]: Abstraction has 191 states and 241 transitions. [2025-01-08 22:34:21,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 1.4794520547945205) internal successors, (108), 73 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:34:21,132 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 241 transitions. [2025-01-08 22:34:21,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2025-01-08 22:34:21,132 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:34:21,132 INFO L218 NwaCegarLoop]: trace histogram [10, 9, 9, 6, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:34:21,138 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-01-08 22:34:21,336 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,SelfDestructingSolverStorable13 [2025-01-08 22:34:21,336 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:34:21,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:34:21,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1352741105, now seen corresponding path program 10 times [2025-01-08 22:34:21,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:34:21,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690800970] [2025-01-08 22:34:21,336 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:34:21,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:34:21,342 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 57 statements into 2 equivalence classes. [2025-01-08 22:34:21,349 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 54 of 57 statements. [2025-01-08 22:34:21,349 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-08 22:34:21,349 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:34:21,443 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 45 proven. 83 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2025-01-08 22:34:21,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:34:21,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690800970] [2025-01-08 22:34:21,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690800970] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:34:21,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102958683] [2025-01-08 22:34:21,444 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:34:21,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:34:21,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:34:21,446 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) [2025-01-08 22:34:21,449 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 [2025-01-08 22:34:21,504 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 57 statements into 2 equivalence classes. [2025-01-08 22:34:21,521 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 54 of 57 statements. [2025-01-08 22:34:21,522 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-08 22:34:21,522 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:34:21,522 INFO L256 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-01-08 22:34:21,525 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:34:21,602 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 48 proven. 80 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2025-01-08 22:34:21,602 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:34:21,670 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 48 proven. 80 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2025-01-08 22:34:21,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2102958683] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:34:21,670 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:34:21,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 16 [2025-01-08 22:34:21,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781370789] [2025-01-08 22:34:21,670 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:34:21,671 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-01-08 22:34:21,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:34:21,671 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-01-08 22:34:21,671 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2025-01-08 22:34:21,671 INFO L87 Difference]: Start difference. First operand 191 states and 241 transitions. Second operand has 16 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:34:21,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:34:21,964 INFO L93 Difference]: Finished difference Result 456 states and 573 transitions. [2025-01-08 22:34:21,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-01-08 22:34:21,964 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2025-01-08 22:34:21,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:34:21,965 INFO L225 Difference]: With dead ends: 456 [2025-01-08 22:34:21,965 INFO L226 Difference]: Without dead ends: 230 [2025-01-08 22:34:21,966 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 102 SyntacticMatches, 7 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2025-01-08 22:34:21,966 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 40 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:34:21,966 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 34 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:34:21,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2025-01-08 22:34:22,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 197. [2025-01-08 22:34:22,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 196 states have (on average 1.25) internal successors, (245), 196 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:34:22,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 245 transitions. [2025-01-08 22:34:22,091 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 245 transitions. Word has length 57 [2025-01-08 22:34:22,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:34:22,091 INFO L471 AbstractCegarLoop]: Abstraction has 197 states and 245 transitions. [2025-01-08 22:34:22,091 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:34:22,091 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 245 transitions. [2025-01-08 22:34:22,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2025-01-08 22:34:22,091 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:34:22,091 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 9, 9, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:34:22,097 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-01-08 22:34:22,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:34:22,292 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:34:22,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:34:22,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1880660526, now seen corresponding path program 11 times [2025-01-08 22:34:22,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:34:22,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448669318] [2025-01-08 22:34:22,292 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-08 22:34:22,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:34:22,299 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 65 statements into 15 equivalence classes. [2025-01-08 22:34:22,309 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) and asserted 33 of 65 statements. [2025-01-08 22:34:22,309 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2025-01-08 22:34:22,309 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:34:22,460 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 129 proven. 118 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2025-01-08 22:34:22,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:34:22,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448669318] [2025-01-08 22:34:22,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448669318] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:34:22,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109221335] [2025-01-08 22:34:22,461 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-08 22:34:22,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:34:22,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:34:22,464 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) [2025-01-08 22:34:22,466 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 [2025-01-08 22:34:22,514 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 65 statements into 15 equivalence classes. [2025-01-08 22:34:22,542 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) and asserted 33 of 65 statements. [2025-01-08 22:34:22,543 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2025-01-08 22:34:22,543 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:34:22,544 INFO L256 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-01-08 22:34:22,545 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:34:22,675 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 182 proven. 60 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2025-01-08 22:34:22,675 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:34:22,783 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 166 proven. 76 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2025-01-08 22:34:22,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2109221335] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:34:22,784 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:34:22,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 11] total 23 [2025-01-08 22:34:22,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247993895] [2025-01-08 22:34:22,784 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:34:22,784 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-01-08 22:34:22,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:34:22,784 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-01-08 22:34:22,784 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=413, Unknown=0, NotChecked=0, Total=506 [2025-01-08 22:34:22,785 INFO L87 Difference]: Start difference. First operand 197 states and 245 transitions. Second operand has 23 states, 23 states have (on average 2.6956521739130435) internal successors, (62), 23 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:34:23,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:34:23,828 INFO L93 Difference]: Finished difference Result 281 states and 352 transitions. [2025-01-08 22:34:23,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2025-01-08 22:34:23,828 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.6956521739130435) internal successors, (62), 23 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2025-01-08 22:34:23,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:34:23,830 INFO L225 Difference]: With dead ends: 281 [2025-01-08 22:34:23,830 INFO L226 Difference]: Without dead ends: 234 [2025-01-08 22:34:23,830 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 117 SyntacticMatches, 9 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1930 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1314, Invalid=5006, Unknown=0, NotChecked=0, Total=6320 [2025-01-08 22:34:23,831 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 138 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-08 22:34:23,831 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 39 Invalid, 530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-08 22:34:23,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2025-01-08 22:34:23,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 136. [2025-01-08 22:34:23,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 135 states have (on average 1.237037037037037) internal successors, (167), 135 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:34:23,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 167 transitions. [2025-01-08 22:34:23,910 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 167 transitions. Word has length 65 [2025-01-08 22:34:23,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:34:23,910 INFO L471 AbstractCegarLoop]: Abstraction has 136 states and 167 transitions. [2025-01-08 22:34:23,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.6956521739130435) internal successors, (62), 23 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:34:23,910 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 167 transitions. [2025-01-08 22:34:23,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-01-08 22:34:23,911 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:34:23,911 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 9, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:34:23,921 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-01-08 22:34:24,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:34:24,112 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:34:24,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:34:24,112 INFO L85 PathProgramCache]: Analyzing trace with hash -329820914, now seen corresponding path program 12 times [2025-01-08 22:34:24,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:34:24,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434827136] [2025-01-08 22:34:24,112 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-08 22:34:24,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:34:24,119 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 68 statements into 15 equivalence classes. [2025-01-08 22:34:24,128 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) and asserted 33 of 68 statements. [2025-01-08 22:34:24,128 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2025-01-08 22:34:24,128 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:34:24,179 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 131 proven. 25 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2025-01-08 22:34:24,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:34:24,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434827136] [2025-01-08 22:34:24,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434827136] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:34:24,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814017326] [2025-01-08 22:34:24,179 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-08 22:34:24,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:34:24,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:34:24,182 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:34:24,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-01-08 22:34:24,257 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 68 statements into 15 equivalence classes. [2025-01-08 22:34:24,434 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) and asserted 33 of 68 statements. [2025-01-08 22:34:24,434 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2025-01-08 22:34:24,434 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:34:24,435 INFO L256 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-01-08 22:34:24,436 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:34:24,503 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 131 proven. 25 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2025-01-08 22:34:24,504 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:34:24,527 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 131 proven. 25 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2025-01-08 22:34:24,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [814017326] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:34:24,528 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:34:24,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 8 [2025-01-08 22:34:24,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808051639] [2025-01-08 22:34:24,528 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:34:24,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-01-08 22:34:24,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:34:24,528 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-01-08 22:34:24,528 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-01-08 22:34:24,528 INFO L87 Difference]: Start difference. First operand 136 states and 167 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:34:24,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:34:24,668 INFO L93 Difference]: Finished difference Result 209 states and 260 transitions. [2025-01-08 22:34:24,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-08 22:34:24,668 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2025-01-08 22:34:24,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:34:24,669 INFO L225 Difference]: With dead ends: 209 [2025-01-08 22:34:24,669 INFO L226 Difference]: Without dead ends: 144 [2025-01-08 22:34:24,669 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2025-01-08 22:34:24,669 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 15 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:34:24,670 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 24 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:34:24,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2025-01-08 22:34:24,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 136. [2025-01-08 22:34:24,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 135 states have (on average 1.2296296296296296) internal successors, (166), 135 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:34:24,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 166 transitions. [2025-01-08 22:34:24,761 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 166 transitions. Word has length 68 [2025-01-08 22:34:24,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:34:24,761 INFO L471 AbstractCegarLoop]: Abstraction has 136 states and 166 transitions. [2025-01-08 22:34:24,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:34:24,761 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 166 transitions. [2025-01-08 22:34:24,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2025-01-08 22:34:24,762 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:34:24,762 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 12, 9, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:34:24,768 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2025-01-08 22:34:24,962 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-01-08 22:34:24,962 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:34:24,963 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:34:24,963 INFO L85 PathProgramCache]: Analyzing trace with hash -100878677, now seen corresponding path program 13 times [2025-01-08 22:34:24,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:34:24,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011222064] [2025-01-08 22:34:24,963 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-08 22:34:24,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:34:24,972 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 71 statements into 1 equivalence classes. [2025-01-08 22:34:24,980 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 71 of 71 statements. [2025-01-08 22:34:24,980 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:34:24,980 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:34:25,032 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 188 proven. 0 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2025-01-08 22:34:25,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:34:25,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011222064] [2025-01-08 22:34:25,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011222064] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-08 22:34:25,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-08 22:34:25,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-08 22:34:25,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249374272] [2025-01-08 22:34:25,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-08 22:34:25,033 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-08 22:34:25,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:34:25,033 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-08 22:34:25,033 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-01-08 22:34:25,033 INFO L87 Difference]: Start difference. First operand 136 states and 166 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:34:25,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:34:25,125 INFO L93 Difference]: Finished difference Result 208 states and 258 transitions. [2025-01-08 22:34:25,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-08 22:34:25,125 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2025-01-08 22:34:25,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:34:25,126 INFO L225 Difference]: With dead ends: 208 [2025-01-08 22:34:25,126 INFO L226 Difference]: Without dead ends: 95 [2025-01-08 22:34:25,126 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-01-08 22:34:25,127 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 1 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:34:25,127 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 26 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:34:25,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2025-01-08 22:34:25,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 88. [2025-01-08 22:34:25,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 1.1264367816091954) internal successors, (98), 87 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:34:25,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 98 transitions. [2025-01-08 22:34:25,211 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 98 transitions. Word has length 71 [2025-01-08 22:34:25,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:34:25,211 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 98 transitions. [2025-01-08 22:34:25,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:34:25,211 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 98 transitions. [2025-01-08 22:34:25,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2025-01-08 22:34:25,212 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:34:25,212 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 12, 12, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:34:25,212 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-01-08 22:34:25,212 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:34:25,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:34:25,213 INFO L85 PathProgramCache]: Analyzing trace with hash -2094081479, now seen corresponding path program 14 times [2025-01-08 22:34:25,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:34:25,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154814136] [2025-01-08 22:34:25,213 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:34:25,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:34:25,223 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 82 statements into 2 equivalence classes. [2025-01-08 22:34:25,235 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 82 of 82 statements. [2025-01-08 22:34:25,235 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:34:25,235 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:34:25,366 INFO L134 CoverageAnalysis]: Checked inductivity of 551 backedges. 280 proven. 52 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2025-01-08 22:34:25,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:34:25,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154814136] [2025-01-08 22:34:25,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154814136] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:34:25,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [207090087] [2025-01-08 22:34:25,367 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:34:25,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:34:25,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:34:25,368 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:34:25,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-01-08 22:34:25,428 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 82 statements into 2 equivalence classes. [2025-01-08 22:34:25,458 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 82 of 82 statements. [2025-01-08 22:34:25,458 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:34:25,459 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:34:25,460 INFO L256 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-08 22:34:25,461 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:34:25,558 INFO L134 CoverageAnalysis]: Checked inductivity of 551 backedges. 365 proven. 7 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2025-01-08 22:34:25,558 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:34:25,646 INFO L134 CoverageAnalysis]: Checked inductivity of 551 backedges. 260 proven. 112 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2025-01-08 22:34:25,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [207090087] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:34:25,646 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:34:25,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 16 [2025-01-08 22:34:25,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387372245] [2025-01-08 22:34:25,647 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:34:25,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-01-08 22:34:25,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:34:25,647 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-01-08 22:34:25,647 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2025-01-08 22:34:25,647 INFO L87 Difference]: Start difference. First operand 88 states and 98 transitions. Second operand has 16 states, 16 states have (on average 4.4375) internal successors, (71), 16 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:34:25,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:34:25,919 INFO L93 Difference]: Finished difference Result 176 states and 201 transitions. [2025-01-08 22:34:25,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-01-08 22:34:25,919 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.4375) internal successors, (71), 16 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2025-01-08 22:34:25,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:34:25,920 INFO L225 Difference]: With dead ends: 176 [2025-01-08 22:34:25,920 INFO L226 Difference]: Without dead ends: 117 [2025-01-08 22:34:25,920 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 164 SyntacticMatches, 6 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=184, Invalid=572, Unknown=0, NotChecked=0, Total=756 [2025-01-08 22:34:25,920 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 26 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:34:25,920 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 40 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:34:25,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2025-01-08 22:34:25,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 93. [2025-01-08 22:34:25,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 1.1195652173913044) internal successors, (103), 92 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:34:25,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 103 transitions. [2025-01-08 22:34:25,981 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 103 transitions. Word has length 82 [2025-01-08 22:34:25,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:34:25,981 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 103 transitions. [2025-01-08 22:34:25,981 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.4375) internal successors, (71), 16 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:34:25,981 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 103 transitions. [2025-01-08 22:34:25,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2025-01-08 22:34:25,981 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:34:25,981 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 12, 12, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:34:25,988 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2025-01-08 22:34:26,182 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:34:26,182 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:34:26,182 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:34:26,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1550864117, now seen corresponding path program 15 times [2025-01-08 22:34:26,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:34:26,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784891155] [2025-01-08 22:34:26,183 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:34:26,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:34:26,194 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 82 statements into 20 equivalence classes. [2025-01-08 22:34:26,219 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) and asserted 42 of 82 statements. [2025-01-08 22:34:26,219 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2025-01-08 22:34:26,219 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:34:26,322 INFO L134 CoverageAnalysis]: Checked inductivity of 551 backedges. 3 proven. 88 refuted. 0 times theorem prover too weak. 460 trivial. 0 not checked. [2025-01-08 22:34:26,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:34:26,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784891155] [2025-01-08 22:34:26,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784891155] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:34:26,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2125424781] [2025-01-08 22:34:26,322 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:34:26,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:34:26,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:34:26,327 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:34:26,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-01-08 22:34:26,392 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 82 statements into 20 equivalence classes. [2025-01-08 22:34:26,708 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) and asserted 42 of 82 statements. [2025-01-08 22:34:26,708 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2025-01-08 22:34:26,708 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:34:26,709 INFO L256 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-01-08 22:34:26,710 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:34:26,799 INFO L134 CoverageAnalysis]: Checked inductivity of 551 backedges. 6 proven. 85 refuted. 0 times theorem prover too weak. 460 trivial. 0 not checked. [2025-01-08 22:34:26,799 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:34:26,876 INFO L134 CoverageAnalysis]: Checked inductivity of 551 backedges. 6 proven. 85 refuted. 0 times theorem prover too weak. 460 trivial. 0 not checked. [2025-01-08 22:34:26,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2125424781] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:34:26,876 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:34:26,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2025-01-08 22:34:26,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370357809] [2025-01-08 22:34:26,876 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:34:26,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-01-08 22:34:26,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:34:26,877 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-01-08 22:34:26,877 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=414, Unknown=0, NotChecked=0, Total=552 [2025-01-08 22:34:26,877 INFO L87 Difference]: Start difference. First operand 93 states and 103 transitions. Second operand has 24 states, 24 states have (on average 1.875) internal successors, (45), 24 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:34:27,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:34:27,393 INFO L93 Difference]: Finished difference Result 222 states and 252 transitions. [2025-01-08 22:34:27,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-01-08 22:34:27,394 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.875) internal successors, (45), 24 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2025-01-08 22:34:27,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:34:27,394 INFO L225 Difference]: With dead ends: 222 [2025-01-08 22:34:27,394 INFO L226 Difference]: Without dead ends: 151 [2025-01-08 22:34:27,395 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 160 SyntacticMatches, 5 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 697 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=551, Invalid=1611, Unknown=0, NotChecked=0, Total=2162 [2025-01-08 22:34:27,396 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 151 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-08 22:34:27,396 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 43 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-08 22:34:27,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2025-01-08 22:34:27,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 104. [2025-01-08 22:34:27,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 1.1067961165048543) internal successors, (114), 103 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:34:27,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 114 transitions. [2025-01-08 22:34:27,476 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 114 transitions. Word has length 82 [2025-01-08 22:34:27,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:34:27,477 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 114 transitions. [2025-01-08 22:34:27,477 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.875) internal successors, (45), 24 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:34:27,477 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 114 transitions. [2025-01-08 22:34:27,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2025-01-08 22:34:27,477 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:34:27,477 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 12, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:34:27,482 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2025-01-08 22:34:27,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:34:27,682 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:34:27,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:34:27,683 INFO L85 PathProgramCache]: Analyzing trace with hash -118726161, now seen corresponding path program 16 times [2025-01-08 22:34:27,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:34:27,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913094972] [2025-01-08 22:34:27,683 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:34:27,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:34:27,693 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 88 statements into 2 equivalence classes. [2025-01-08 22:34:27,710 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 88 of 88 statements. [2025-01-08 22:34:27,711 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-08 22:34:27,711 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-08 22:34:27,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1511966316] [2025-01-08 22:34:27,712 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:34:27,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:34:27,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:34:27,720 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:34:27,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-01-08 22:34:27,787 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 88 statements into 2 equivalence classes.