./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-patterns/array24_pattern.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-patterns/array24_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 b41c571dabcbc4670dde65107f8da5b879f13435b678b4e9a9cdcc7ef0066cf6 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-05 10:22:29,118 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-05 10:22:29,171 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-05 10:22:29,175 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-05 10:22:29,175 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-05 10:22:29,189 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-05 10:22:29,190 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-05 10:22:29,190 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-05 10:22:29,190 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-05 10:22:29,190 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-05 10:22:29,190 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-05 10:22:29,190 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-05 10:22:29,194 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-05 10:22:29,195 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-05 10:22:29,195 INFO L153 SettingsManager]: * Use SBE=true [2025-02-05 10:22:29,195 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-05 10:22:29,195 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-05 10:22:29,195 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-05 10:22:29,195 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-05 10:22:29,195 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-05 10:22:29,195 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-05 10:22:29,195 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-05 10:22:29,195 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-05 10:22:29,195 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-05 10:22:29,195 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-05 10:22:29,195 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-05 10:22:29,195 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-05 10:22:29,195 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-05 10:22:29,195 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-05 10:22:29,195 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-05 10:22:29,195 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-05 10:22:29,196 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-05 10:22:29,196 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 10:22:29,196 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-05 10:22:29,196 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-05 10:22:29,196 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-05 10:22:29,196 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-05 10:22:29,196 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-05 10:22:29,196 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-05 10:22:29,196 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-05 10:22:29,196 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-05 10:22:29,196 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-05 10:22:29,196 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-05 10:22:29,196 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 -> b41c571dabcbc4670dde65107f8da5b879f13435b678b4e9a9cdcc7ef0066cf6 [2025-02-05 10:22:29,510 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-05 10:22:29,516 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-05 10:22:29,518 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-05 10:22:29,519 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-05 10:22:29,519 INFO L274 PluginConnector]: CDTParser initialized [2025-02-05 10:22:29,520 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-patterns/array24_pattern.c [2025-02-05 10:22:30,771 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/38d86424d/97a89107d5c74b38ad06e7fb2d43603a/FLAG18e668470 [2025-02-05 10:22:30,991 INFO L384 CDTParser]: Found 1 translation units. [2025-02-05 10:22:30,991 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/array-patterns/array24_pattern.c [2025-02-05 10:22:30,997 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/38d86424d/97a89107d5c74b38ad06e7fb2d43603a/FLAG18e668470 [2025-02-05 10:22:31,329 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/38d86424d/97a89107d5c74b38ad06e7fb2d43603a [2025-02-05 10:22:31,336 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-05 10:22:31,337 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-05 10:22:31,339 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-05 10:22:31,339 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-05 10:22:31,342 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-05 10:22:31,342 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 10:22:31" (1/1) ... [2025-02-05 10:22:31,344 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15ef64e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:22:31, skipping insertion in model container [2025-02-05 10:22:31,344 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 10:22:31" (1/1) ... [2025-02-05 10:22:31,356 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-05 10:22:31,461 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/array24_pattern.c[1359,1372] [2025-02-05 10:22:31,479 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 10:22:31,485 INFO L200 MainTranslator]: Completed pre-run [2025-02-05 10:22:31,495 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/array24_pattern.c[1359,1372] [2025-02-05 10:22:31,503 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 10:22:31,516 INFO L204 MainTranslator]: Completed translation [2025-02-05 10:22:31,518 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:22:31 WrapperNode [2025-02-05 10:22:31,518 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-05 10:22:31,520 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-05 10:22:31,520 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-05 10:22:31,520 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-05 10:22:31,526 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:22:31" (1/1) ... [2025-02-05 10:22:31,533 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:22:31" (1/1) ... [2025-02-05 10:22:31,549 INFO L138 Inliner]: procedures = 17, calls = 20, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 92 [2025-02-05 10:22:31,550 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-05 10:22:31,550 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-05 10:22:31,550 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-05 10:22:31,550 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-05 10:22:31,557 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:22:31" (1/1) ... [2025-02-05 10:22:31,557 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:22:31" (1/1) ... [2025-02-05 10:22:31,562 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:22:31" (1/1) ... [2025-02-05 10:22:31,569 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 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]. [2025-02-05 10:22:31,569 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:22:31" (1/1) ... [2025-02-05 10:22:31,569 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:22:31" (1/1) ... [2025-02-05 10:22:31,572 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:22:31" (1/1) ... [2025-02-05 10:22:31,572 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:22:31" (1/1) ... [2025-02-05 10:22:31,573 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:22:31" (1/1) ... [2025-02-05 10:22:31,573 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:22:31" (1/1) ... [2025-02-05 10:22:31,574 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-05 10:22:31,575 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-05 10:22:31,575 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-05 10:22:31,575 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-05 10:22:31,575 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:22:31" (1/1) ... [2025-02-05 10:22:31,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 10:22:31,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:22:31,596 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-05 10:22:31,598 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-05 10:22:31,614 INFO L130 BoogieDeclarations]: Found specification of procedure outerBoundaryPatternCheck [2025-02-05 10:22:31,614 INFO L138 BoogieDeclarations]: Found implementation of procedure outerBoundaryPatternCheck [2025-02-05 10:22:31,615 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-05 10:22:31,615 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-02-05 10:22:31,615 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-02-05 10:22:31,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-05 10:22:31,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-05 10:22:31,615 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-05 10:22:31,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-05 10:22:31,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-05 10:22:31,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-05 10:22:31,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-05 10:22:31,616 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-05 10:22:31,616 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-05 10:22:31,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-05 10:22:31,674 INFO L257 CfgBuilder]: Building ICFG [2025-02-05 10:22:31,675 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-05 10:22:31,826 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L52: call ULTIMATE.dealloc(main_~#array~0#1.base, main_~#array~0#1.offset);havoc main_~#array~0#1.base, main_~#array~0#1.offset; [2025-02-05 10:22:31,843 INFO L? ?]: Removed 25 outVars from TransFormulas that were not future-live. [2025-02-05 10:22:31,846 INFO L308 CfgBuilder]: Performing block encoding [2025-02-05 10:22:31,853 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-05 10:22:31,854 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-05 10:22:31,854 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 10:22:31 BoogieIcfgContainer [2025-02-05 10:22:31,854 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-05 10:22:31,857 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-05 10:22:31,857 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-05 10:22:31,860 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-05 10:22:31,860 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.02 10:22:31" (1/3) ... [2025-02-05 10:22:31,861 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b2e58b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 10:22:31, skipping insertion in model container [2025-02-05 10:22:31,862 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:22:31" (2/3) ... [2025-02-05 10:22:31,862 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b2e58b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 10:22:31, skipping insertion in model container [2025-02-05 10:22:31,863 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 10:22:31" (3/3) ... [2025-02-05 10:22:31,864 INFO L128 eAbstractionObserver]: Analyzing ICFG array24_pattern.c [2025-02-05 10:22:31,876 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-05 10:22:31,877 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG array24_pattern.c that has 3 procedures, 35 locations, 1 initial locations, 5 loop locations, and 1 error locations. [2025-02-05 10:22:31,912 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-05 10:22:31,920 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;@577836bf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-05 10:22:31,922 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-05 10:22:31,924 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 27 states have internal predecessors, (38), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-02-05 10:22:31,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-02-05 10:22:31,929 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:22:31,930 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:22:31,930 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:22:31,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:22:31,934 INFO L85 PathProgramCache]: Analyzing trace with hash -148552546, now seen corresponding path program 1 times [2025-02-05 10:22:31,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:22:31,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627097461] [2025-02-05 10:22:31,940 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:22:31,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:22:32,011 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-05 10:22:32,022 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-05 10:22:32,022 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:22:32,022 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:22:32,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:22:32,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:22:32,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627097461] [2025-02-05 10:22:32,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627097461] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 10:22:32,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 10:22:32,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-05 10:22:32,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039530686] [2025-02-05 10:22:32,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 10:22:32,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-05 10:22:32,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:22:32,087 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-05 10:22:32,087 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-05 10:22:32,089 INFO L87 Difference]: Start difference. First operand has 35 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 27 states have internal predecessors, (38), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-05 10:22:32,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:22:32,106 INFO L93 Difference]: Finished difference Result 67 states and 95 transitions. [2025-02-05 10:22:32,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-05 10:22:32,108 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2025-02-05 10:22:32,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:22:32,111 INFO L225 Difference]: With dead ends: 67 [2025-02-05 10:22:32,111 INFO L226 Difference]: Without dead ends: 31 [2025-02-05 10:22:32,113 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 [2025-02-05 10:22:32,115 INFO L435 NwaCegarLoop]: 45 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, 45 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 [2025-02-05 10:22:32,115 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 10:22:32,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2025-02-05 10:22:32,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2025-02-05 10:22:32,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 23 states have internal predecessors, (31), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-02-05 10:22:32,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 41 transitions. [2025-02-05 10:22:32,144 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 41 transitions. Word has length 14 [2025-02-05 10:22:32,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:22:32,145 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 41 transitions. [2025-02-05 10:22:32,145 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-05 10:22:32,145 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 41 transitions. [2025-02-05 10:22:32,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2025-02-05 10:22:32,147 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:22:32,147 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:22:32,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-05 10:22:32,148 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:22:32,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:22:32,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1107213646, now seen corresponding path program 1 times [2025-02-05 10:22:32,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:22:32,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224878919] [2025-02-05 10:22:32,149 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:22:32,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:22:32,170 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-02-05 10:22:32,223 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-02-05 10:22:32,223 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:22:32,223 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:22:32,441 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-05 10:22:32,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:22:32,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224878919] [2025-02-05 10:22:32,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224878919] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:22:32,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170539157] [2025-02-05 10:22:32,441 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:22:32,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:22:32,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:22:32,447 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:22:32,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-05 10:22:32,506 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-02-05 10:22:32,554 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-02-05 10:22:32,555 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:22:32,555 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:22:32,556 INFO L256 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-05 10:22:32,562 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:22:32,654 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-05 10:22:32,654 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 10:22:32,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [170539157] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 10:22:32,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 10:22:32,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2025-02-05 10:22:32,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375519112] [2025-02-05 10:22:32,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 10:22:32,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 10:22:32,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:22:32,660 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 10:22:32,660 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2025-02-05 10:22:32,660 INFO L87 Difference]: Start difference. First operand 31 states and 41 transitions. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2025-02-05 10:22:32,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:22:32,754 INFO L93 Difference]: Finished difference Result 69 states and 89 transitions. [2025-02-05 10:22:32,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-05 10:22:32,755 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 34 [2025-02-05 10:22:32,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:22:32,756 INFO L225 Difference]: With dead ends: 69 [2025-02-05 10:22:32,756 INFO L226 Difference]: Without dead ends: 38 [2025-02-05 10:22:32,756 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2025-02-05 10:22:32,757 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 6 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 10:22:32,757 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 133 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 10:22:32,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2025-02-05 10:22:32,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 32. [2025-02-05 10:22:32,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 24 states have internal predecessors, (32), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-02-05 10:22:32,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 42 transitions. [2025-02-05 10:22:32,761 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 42 transitions. Word has length 34 [2025-02-05 10:22:32,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:22:32,762 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 42 transitions. [2025-02-05 10:22:32,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2025-02-05 10:22:32,762 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 42 transitions. [2025-02-05 10:22:32,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2025-02-05 10:22:32,763 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:22:32,763 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:22:32,772 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-05 10:22:32,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:22:32,968 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:22:32,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:22:32,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1952965616, now seen corresponding path program 1 times [2025-02-05 10:22:32,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:22:32,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300291560] [2025-02-05 10:22:32,969 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:22:32,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:22:32,986 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-02-05 10:22:33,000 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-02-05 10:22:33,000 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:22:33,000 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:22:33,103 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-05 10:22:33,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:22:33,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300291560] [2025-02-05 10:22:33,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300291560] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 10:22:33,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 10:22:33,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-05 10:22:33,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559689891] [2025-02-05 10:22:33,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 10:22:33,106 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 10:22:33,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:22:33,106 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 10:22:33,106 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-05 10:22:33,107 INFO L87 Difference]: Start difference. First operand 32 states and 42 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-02-05 10:22:33,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:22:33,159 INFO L93 Difference]: Finished difference Result 64 states and 88 transitions. [2025-02-05 10:22:33,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 10:22:33,159 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 36 [2025-02-05 10:22:33,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:22:33,160 INFO L225 Difference]: With dead ends: 64 [2025-02-05 10:22:33,160 INFO L226 Difference]: Without dead ends: 37 [2025-02-05 10:22:33,160 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 [2025-02-05 10:22:33,161 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 4 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 10:22:33,162 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 86 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 10:22:33,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2025-02-05 10:22:33,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2025-02-05 10:22:33,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 27 states have (on average 1.3333333333333333) internal successors, (36), 27 states have internal predecessors, (36), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-02-05 10:22:33,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 46 transitions. [2025-02-05 10:22:33,170 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 46 transitions. Word has length 36 [2025-02-05 10:22:33,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:22:33,170 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 46 transitions. [2025-02-05 10:22:33,170 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-02-05 10:22:33,170 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 46 transitions. [2025-02-05 10:22:33,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2025-02-05 10:22:33,171 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:22:33,171 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:22:33,171 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-05 10:22:33,171 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:22:33,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:22:33,172 INFO L85 PathProgramCache]: Analyzing trace with hash 65402151, now seen corresponding path program 1 times [2025-02-05 10:22:33,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:22:33,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926031125] [2025-02-05 10:22:33,176 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:22:33,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:22:33,186 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-02-05 10:22:33,207 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-02-05 10:22:33,207 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:22:33,209 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:22:33,305 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-02-05 10:22:33,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:22:33,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926031125] [2025-02-05 10:22:33,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926031125] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:22:33,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1824278426] [2025-02-05 10:22:33,306 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:22:33,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:22:33,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:22:33,308 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:22:33,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-05 10:22:33,348 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-02-05 10:22:33,362 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-02-05 10:22:33,363 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:22:33,363 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:22:33,363 INFO L256 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-05 10:22:33,365 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:22:33,431 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-05 10:22:33,432 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:22:33,496 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-02-05 10:22:33,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1824278426] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:22:33,498 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:22:33,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2025-02-05 10:22:33,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988193504] [2025-02-05 10:22:33,498 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:22:33,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-05 10:22:33,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:22:33,499 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-05 10:22:33,499 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2025-02-05 10:22:33,500 INFO L87 Difference]: Start difference. First operand 35 states and 46 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-02-05 10:22:33,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:22:33,599 INFO L93 Difference]: Finished difference Result 44 states and 55 transitions. [2025-02-05 10:22:33,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-05 10:22:33,599 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 37 [2025-02-05 10:22:33,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:22:33,600 INFO L225 Difference]: With dead ends: 44 [2025-02-05 10:22:33,601 INFO L226 Difference]: Without dead ends: 41 [2025-02-05 10:22:33,601 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 70 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2025-02-05 10:22:33,602 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 28 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 10:22:33,602 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 97 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 10:22:33,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2025-02-05 10:22:33,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2025-02-05 10:22:33,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 30 states have internal predecessors, (38), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-02-05 10:22:33,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 48 transitions. [2025-02-05 10:22:33,608 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 48 transitions. Word has length 37 [2025-02-05 10:22:33,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:22:33,609 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 48 transitions. [2025-02-05 10:22:33,609 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-02-05 10:22:33,609 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 48 transitions. [2025-02-05 10:22:33,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2025-02-05 10:22:33,612 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:22:33,612 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:22:33,620 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-05 10:22:33,813 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:22:33,813 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:22:33,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:22:33,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1429959391, now seen corresponding path program 1 times [2025-02-05 10:22:33,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:22:33,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730985960] [2025-02-05 10:22:33,815 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:22:33,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:22:33,833 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 40 statements into 1 equivalence classes. [2025-02-05 10:22:33,851 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 40 of 40 statements. [2025-02-05 10:22:33,854 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:22:33,854 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:22:33,981 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-02-05 10:22:33,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:22:33,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730985960] [2025-02-05 10:22:33,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730985960] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:22:33,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [879264771] [2025-02-05 10:22:33,983 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:22:33,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:22:33,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:22:33,990 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:22:33,993 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-05 10:22:34,031 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 40 statements into 1 equivalence classes. [2025-02-05 10:22:34,047 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 40 of 40 statements. [2025-02-05 10:22:34,048 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:22:34,048 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:22:34,048 INFO L256 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-02-05 10:22:34,050 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:22:34,098 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-05 10:22:34,099 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:22:34,208 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-02-05 10:22:34,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [879264771] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:22:34,209 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:22:34,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 15 [2025-02-05 10:22:34,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001638856] [2025-02-05 10:22:34,209 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:22:34,210 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-02-05 10:22:34,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:22:34,210 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-02-05 10:22:34,210 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2025-02-05 10:22:34,210 INFO L87 Difference]: Start difference. First operand 39 states and 48 transitions. Second operand has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 states have internal predecessors, (45), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2025-02-05 10:22:34,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:22:34,407 INFO L93 Difference]: Finished difference Result 72 states and 94 transitions. [2025-02-05 10:22:34,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-05 10:22:34,408 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 states have internal predecessors, (45), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 40 [2025-02-05 10:22:34,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:22:34,410 INFO L225 Difference]: With dead ends: 72 [2025-02-05 10:22:34,410 INFO L226 Difference]: Without dead ends: 43 [2025-02-05 10:22:34,410 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2025-02-05 10:22:34,414 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 94 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-05 10:22:34,414 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 134 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-05 10:22:34,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2025-02-05 10:22:34,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2025-02-05 10:22:34,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 32 states have (on average 1.25) internal successors, (40), 32 states have internal predecessors, (40), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-02-05 10:22:34,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 50 transitions. [2025-02-05 10:22:34,422 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 50 transitions. Word has length 40 [2025-02-05 10:22:34,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:22:34,422 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 50 transitions. [2025-02-05 10:22:34,422 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 states have internal predecessors, (45), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2025-02-05 10:22:34,422 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 50 transitions. [2025-02-05 10:22:34,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2025-02-05 10:22:34,423 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:22:34,423 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:22:34,432 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-05 10:22:34,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:22:34,629 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:22:34,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:22:34,630 INFO L85 PathProgramCache]: Analyzing trace with hash 2103100338, now seen corresponding path program 2 times [2025-02-05 10:22:34,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:22:34,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869572215] [2025-02-05 10:22:34,630 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 10:22:34,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:22:34,641 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 42 statements into 2 equivalence classes. [2025-02-05 10:22:34,651 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 42 of 42 statements. [2025-02-05 10:22:34,652 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 10:22:34,652 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:22:34,745 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-02-05 10:22:34,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:22:34,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869572215] [2025-02-05 10:22:34,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869572215] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:22:34,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928419310] [2025-02-05 10:22:34,746 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 10:22:34,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:22:34,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:22:34,754 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:22:34,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-05 10:22:34,792 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 42 statements into 2 equivalence classes. [2025-02-05 10:22:34,808 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 42 of 42 statements. [2025-02-05 10:22:34,808 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 10:22:34,809 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:22:34,809 INFO L256 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-05 10:22:34,811 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:22:34,865 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-02-05 10:22:34,866 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:22:34,912 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-02-05 10:22:34,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1928419310] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:22:34,913 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:22:34,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2025-02-05 10:22:34,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168213108] [2025-02-05 10:22:34,914 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:22:34,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-02-05 10:22:34,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:22:34,914 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-02-05 10:22:34,915 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2025-02-05 10:22:34,915 INFO L87 Difference]: Start difference. First operand 41 states and 50 transitions. Second operand has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 states have internal predecessors, (37), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2025-02-05 10:22:35,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:22:35,005 INFO L93 Difference]: Finished difference Result 83 states and 105 transitions. [2025-02-05 10:22:35,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-05 10:22:35,007 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 states have internal predecessors, (37), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 42 [2025-02-05 10:22:35,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:22:35,007 INFO L225 Difference]: With dead ends: 83 [2025-02-05 10:22:35,007 INFO L226 Difference]: Without dead ends: 55 [2025-02-05 10:22:35,007 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 77 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2025-02-05 10:22:35,008 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 16 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 10:22:35,008 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 177 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 10:22:35,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2025-02-05 10:22:35,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 49. [2025-02-05 10:22:35,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 40 states have (on average 1.25) internal successors, (50), 40 states have internal predecessors, (50), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-02-05 10:22:35,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 60 transitions. [2025-02-05 10:22:35,020 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 60 transitions. Word has length 42 [2025-02-05 10:22:35,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:22:35,021 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 60 transitions. [2025-02-05 10:22:35,021 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 states have internal predecessors, (37), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2025-02-05 10:22:35,021 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 60 transitions. [2025-02-05 10:22:35,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2025-02-05 10:22:35,021 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:22:35,021 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:22:35,028 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-02-05 10:22:35,222 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,SelfDestructingSolverStorable5 [2025-02-05 10:22:35,222 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:22:35,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:22:35,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1502099790, now seen corresponding path program 3 times [2025-02-05 10:22:35,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:22:35,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901678993] [2025-02-05 10:22:35,223 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 10:22:35,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:22:35,234 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 50 statements into 7 equivalence classes. [2025-02-05 10:22:35,271 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) and asserted 50 of 50 statements. [2025-02-05 10:22:35,272 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2025-02-05 10:22:35,272 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-05 10:22:35,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1970154371] [2025-02-05 10:22:35,276 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 10:22:35,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:22:35,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:22:35,283 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:22:35,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-05 10:22:35,321 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 50 statements into 7 equivalence classes. [2025-02-05 10:22:35,457 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) and asserted 50 of 50 statements. [2025-02-05 10:22:35,457 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2025-02-05 10:22:35,457 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:22:35,460 INFO L256 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 78 conjuncts are in the unsatisfiable core [2025-02-05 10:22:35,465 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:22:35,511 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 [2025-02-05 10:22:35,536 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 [2025-02-05 10:22:35,636 INFO L349 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2025-02-05 10:22:35,637 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 30 [2025-02-05 10:22:35,694 INFO L349 Elim1Store]: treesize reduction 52, result has 22.4 percent of original size [2025-02-05 10:22:35,694 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 39 treesize of output 44 [2025-02-05 10:22:36,329 INFO L349 Elim1Store]: treesize reduction 190, result has 15.6 percent of original size [2025-02-05 10:22:36,330 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 66 treesize of output 62 [2025-02-05 10:22:36,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-05 10:22:36,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-05 10:22:36,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-05 10:22:36,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-05 10:22:36,682 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:22:36,682 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 13 [2025-02-05 10:22:36,738 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 8 proven. 36 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-05 10:22:36,738 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:22:38,079 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 178 treesize of output 170 [2025-02-05 10:22:38,096 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:22:38,096 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 79913 treesize of output 72745 [2025-02-05 10:22:38,560 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-05 10:22:38,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:22:38,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901678993] [2025-02-05 10:22:38,561 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-05 10:22:38,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970154371] [2025-02-05 10:22:38,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1970154371] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:22:38,561 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-05 10:22:38,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 23] total 46 [2025-02-05 10:22:38,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609075522] [2025-02-05 10:22:38,561 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-05 10:22:38,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2025-02-05 10:22:38,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:22:38,563 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2025-02-05 10:22:38,563 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=1745, Unknown=0, NotChecked=0, Total=2070 [2025-02-05 10:22:38,563 INFO L87 Difference]: Start difference. First operand 49 states and 60 transitions. Second operand has 46 states, 46 states have (on average 1.5) internal successors, (69), 44 states have internal predecessors, (69), 3 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2025-02-05 10:22:45,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:22:45,897 INFO L93 Difference]: Finished difference Result 154 states and 201 transitions. [2025-02-05 10:22:45,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2025-02-05 10:22:45,898 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 1.5) internal successors, (69), 44 states have internal predecessors, (69), 3 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) Word has length 50 [2025-02-05 10:22:45,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:22:45,900 INFO L225 Difference]: With dead ends: 154 [2025-02-05 10:22:45,900 INFO L226 Difference]: Without dead ends: 121 [2025-02-05 10:22:45,902 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 48 SyntacticMatches, 6 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1662 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=791, Invalid=4465, Unknown=0, NotChecked=0, Total=5256 [2025-02-05 10:22:45,903 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 115 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 1215 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 1305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2025-02-05 10:22:45,903 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 491 Invalid, 1305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1215 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2025-02-05 10:22:45,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2025-02-05 10:22:45,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 91. [2025-02-05 10:22:45,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 75 states have (on average 1.2933333333333332) internal successors, (97), 75 states have internal predecessors, (97), 9 states have call successors, (9), 5 states have call predecessors, (9), 6 states have return successors, (11), 10 states have call predecessors, (11), 9 states have call successors, (11) [2025-02-05 10:22:45,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 117 transitions. [2025-02-05 10:22:45,946 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 117 transitions. Word has length 50 [2025-02-05 10:22:45,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:22:45,948 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 117 transitions. [2025-02-05 10:22:45,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 1.5) internal successors, (69), 44 states have internal predecessors, (69), 3 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2025-02-05 10:22:45,948 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 117 transitions. [2025-02-05 10:22:45,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2025-02-05 10:22:45,950 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:22:45,951 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:22:45,958 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-05 10:22:46,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:22:46,156 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:22:46,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:22:46,157 INFO L85 PathProgramCache]: Analyzing trace with hash 680502040, now seen corresponding path program 4 times [2025-02-05 10:22:46,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:22:46,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990318395] [2025-02-05 10:22:46,157 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 10:22:46,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:22:46,167 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 51 statements into 2 equivalence classes. [2025-02-05 10:22:46,177 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 45 of 51 statements. [2025-02-05 10:22:46,177 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-05 10:22:46,177 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:22:46,413 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 14 proven. 20 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-02-05 10:22:46,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:22:46,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990318395] [2025-02-05 10:22:46,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990318395] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:22:46,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227990917] [2025-02-05 10:22:46,413 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 10:22:46,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:22:46,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:22:46,417 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:22:46,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-05 10:22:46,466 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 51 statements into 2 equivalence classes. [2025-02-05 10:22:46,482 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 45 of 51 statements. [2025-02-05 10:22:46,483 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-05 10:22:46,483 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:22:46,485 INFO L256 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-05 10:22:46,486 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:22:46,558 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 30 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-05 10:22:46,558 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:22:46,635 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 13 proven. 21 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-02-05 10:22:46,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1227990917] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:22:46,636 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:22:46,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2025-02-05 10:22:46,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691605215] [2025-02-05 10:22:46,636 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:22:46,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-05 10:22:46,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:22:46,637 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-05 10:22:46,639 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2025-02-05 10:22:46,639 INFO L87 Difference]: Start difference. First operand 91 states and 117 transitions. Second operand has 14 states, 14 states have (on average 3.5) internal successors, (49), 14 states have internal predecessors, (49), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-02-05 10:22:46,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:22:46,845 INFO L93 Difference]: Finished difference Result 236 states and 306 transitions. [2025-02-05 10:22:46,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-05 10:22:46,863 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 14 states have internal predecessors, (49), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 51 [2025-02-05 10:22:46,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:22:46,864 INFO L225 Difference]: With dead ends: 236 [2025-02-05 10:22:46,864 INFO L226 Difference]: Without dead ends: 158 [2025-02-05 10:22:46,870 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 92 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2025-02-05 10:22:46,871 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 10 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-05 10:22:46,871 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 121 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-05 10:22:46,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2025-02-05 10:22:46,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 151. [2025-02-05 10:22:46,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 122 states have (on average 1.2622950819672132) internal successors, (154), 122 states have internal predecessors, (154), 17 states have call successors, (17), 9 states have call predecessors, (17), 11 states have return successors, (21), 19 states have call predecessors, (21), 17 states have call successors, (21) [2025-02-05 10:22:46,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 192 transitions. [2025-02-05 10:22:46,922 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 192 transitions. Word has length 51 [2025-02-05 10:22:46,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:22:46,922 INFO L471 AbstractCegarLoop]: Abstraction has 151 states and 192 transitions. [2025-02-05 10:22:46,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 14 states have internal predecessors, (49), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-02-05 10:22:46,923 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 192 transitions. [2025-02-05 10:22:46,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2025-02-05 10:22:46,923 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:22:46,923 INFO L218 NwaCegarLoop]: trace histogram [6, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:22:46,929 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-02-05 10:22:47,124 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,SelfDestructingSolverStorable7 [2025-02-05 10:22:47,124 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:22:47,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:22:47,125 INFO L85 PathProgramCache]: Analyzing trace with hash 683916948, now seen corresponding path program 5 times [2025-02-05 10:22:47,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:22:47,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820111603] [2025-02-05 10:22:47,125 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 10:22:47,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:22:47,131 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 54 statements into 7 equivalence classes. [2025-02-05 10:22:47,147 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) and asserted 54 of 54 statements. [2025-02-05 10:22:47,148 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2025-02-05 10:22:47,148 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:22:47,271 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 22 proven. 14 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-02-05 10:22:47,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:22:47,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820111603] [2025-02-05 10:22:47,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820111603] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:22:47,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [235028465] [2025-02-05 10:22:47,272 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 10:22:47,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:22:47,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:22:47,274 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:22:47,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-05 10:22:47,313 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 54 statements into 7 equivalence classes. [2025-02-05 10:22:47,423 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) and asserted 54 of 54 statements. [2025-02-05 10:22:47,423 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2025-02-05 10:22:47,423 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:22:47,424 INFO L256 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-05 10:22:47,426 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:22:47,503 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 24 proven. 12 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-02-05 10:22:47,503 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:22:47,638 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 22 proven. 14 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-02-05 10:22:47,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [235028465] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:22:47,639 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:22:47,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2025-02-05 10:22:47,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318911459] [2025-02-05 10:22:47,639 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:22:47,639 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-02-05 10:22:47,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:22:47,639 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-02-05 10:22:47,640 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2025-02-05 10:22:47,640 INFO L87 Difference]: Start difference. First operand 151 states and 192 transitions. Second operand has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2025-02-05 10:22:48,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:22:48,061 INFO L93 Difference]: Finished difference Result 306 states and 396 transitions. [2025-02-05 10:22:48,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-02-05 10:22:48,062 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 54 [2025-02-05 10:22:48,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:22:48,063 INFO L225 Difference]: With dead ends: 306 [2025-02-05 10:22:48,064 INFO L226 Difference]: Without dead ends: 160 [2025-02-05 10:22:48,065 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 111 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=222, Invalid=534, Unknown=0, NotChecked=0, Total=756 [2025-02-05 10:22:48,065 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 31 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-05 10:22:48,065 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 175 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-05 10:22:48,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2025-02-05 10:22:48,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 158. [2025-02-05 10:22:48,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 129 states have (on average 1.2635658914728682) internal successors, (163), 129 states have internal predecessors, (163), 17 states have call successors, (17), 9 states have call predecessors, (17), 11 states have return successors, (21), 19 states have call predecessors, (21), 17 states have call successors, (21) [2025-02-05 10:22:48,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 201 transitions. [2025-02-05 10:22:48,111 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 201 transitions. Word has length 54 [2025-02-05 10:22:48,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:22:48,111 INFO L471 AbstractCegarLoop]: Abstraction has 158 states and 201 transitions. [2025-02-05 10:22:48,111 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2025-02-05 10:22:48,111 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 201 transitions. [2025-02-05 10:22:48,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2025-02-05 10:22:48,112 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:22:48,112 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:22:48,118 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 [2025-02-05 10:22:48,314 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:22:48,314 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:22:48,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:22:48,315 INFO L85 PathProgramCache]: Analyzing trace with hash -819287470, now seen corresponding path program 6 times [2025-02-05 10:22:48,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:22:48,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478821562] [2025-02-05 10:22:48,315 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-05 10:22:48,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:22:48,327 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 54 statements into 8 equivalence classes. [2025-02-05 10:22:48,354 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) and asserted 54 of 54 statements. [2025-02-05 10:22:48,354 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2025-02-05 10:22:48,354 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:22:48,540 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 19 proven. 24 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2025-02-05 10:22:48,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:22:48,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478821562] [2025-02-05 10:22:48,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478821562] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:22:48,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [450248478] [2025-02-05 10:22:48,541 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-05 10:22:48,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:22:48,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:22:48,551 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:22:48,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-05 10:22:48,609 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 54 statements into 8 equivalence classes. [2025-02-05 10:22:48,762 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) and asserted 54 of 54 statements. [2025-02-05 10:22:48,762 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2025-02-05 10:22:48,762 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:22:48,764 INFO L256 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-05 10:22:48,765 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:22:48,853 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 29 proven. 22 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-02-05 10:22:48,853 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:22:48,919 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 21 proven. 22 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2025-02-05 10:22:48,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [450248478] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:22:48,920 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:22:48,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2025-02-05 10:22:48,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84631869] [2025-02-05 10:22:48,920 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:22:48,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-05 10:22:48,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:22:48,924 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-05 10:22:48,924 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2025-02-05 10:22:48,924 INFO L87 Difference]: Start difference. First operand 158 states and 201 transitions. Second operand has 14 states, 14 states have (on average 3.857142857142857) internal successors, (54), 14 states have internal predecessors, (54), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-02-05 10:22:49,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:22:49,162 INFO L93 Difference]: Finished difference Result 234 states and 296 transitions. [2025-02-05 10:22:49,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-02-05 10:22:49,163 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.857142857142857) internal successors, (54), 14 states have internal predecessors, (54), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 54 [2025-02-05 10:22:49,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:22:49,164 INFO L225 Difference]: With dead ends: 234 [2025-02-05 10:22:49,164 INFO L226 Difference]: Without dead ends: 177 [2025-02-05 10:22:49,164 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 103 SyntacticMatches, 6 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=218, Invalid=594, Unknown=0, NotChecked=0, Total=812 [2025-02-05 10:22:49,164 INFO L435 NwaCegarLoop]: 53 mSDtfsCounter, 27 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 10:22:49,165 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 227 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 10:22:49,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2025-02-05 10:22:49,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 154. [2025-02-05 10:22:49,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 125 states have (on average 1.248) internal successors, (156), 125 states have internal predecessors, (156), 17 states have call successors, (17), 9 states have call predecessors, (17), 11 states have return successors, (21), 19 states have call predecessors, (21), 17 states have call successors, (21) [2025-02-05 10:22:49,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 194 transitions. [2025-02-05 10:22:49,191 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 194 transitions. Word has length 54 [2025-02-05 10:22:49,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:22:49,191 INFO L471 AbstractCegarLoop]: Abstraction has 154 states and 194 transitions. [2025-02-05 10:22:49,191 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.857142857142857) internal successors, (54), 14 states have internal predecessors, (54), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-02-05 10:22:49,191 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 194 transitions. [2025-02-05 10:22:49,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2025-02-05 10:22:49,192 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:22:49,192 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:22:49,198 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-02-05 10:22:49,396 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:22:49,396 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:22:49,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:22:49,396 INFO L85 PathProgramCache]: Analyzing trace with hash 102971921, now seen corresponding path program 1 times [2025-02-05 10:22:49,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:22:49,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122033020] [2025-02-05 10:22:49,396 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:22:49,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:22:49,414 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 56 statements into 1 equivalence classes. [2025-02-05 10:22:49,428 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 56 of 56 statements. [2025-02-05 10:22:49,431 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:22:49,431 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:22:49,542 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2025-02-05 10:22:49,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:22:49,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122033020] [2025-02-05 10:22:49,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122033020] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 10:22:49,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 10:22:49,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-05 10:22:49,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755536713] [2025-02-05 10:22:49,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 10:22:49,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 10:22:49,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:22:49,544 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 10:22:49,544 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-05 10:22:49,544 INFO L87 Difference]: Start difference. First operand 154 states and 194 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2025-02-05 10:22:49,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:22:49,580 INFO L93 Difference]: Finished difference Result 241 states and 307 transitions. [2025-02-05 10:22:49,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 10:22:49,580 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 56 [2025-02-05 10:22:49,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:22:49,582 INFO L225 Difference]: With dead ends: 241 [2025-02-05 10:22:49,582 INFO L226 Difference]: Without dead ends: 166 [2025-02-05 10:22:49,582 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-05 10:22:49,583 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 0 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 10:22:49,583 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 146 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 10:22:49,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2025-02-05 10:22:49,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 164. [2025-02-05 10:22:49,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 133 states have (on average 1.2330827067669172) internal successors, (164), 131 states have internal predecessors, (164), 17 states have call successors, (17), 9 states have call predecessors, (17), 13 states have return successors, (25), 23 states have call predecessors, (25), 17 states have call successors, (25) [2025-02-05 10:22:49,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 206 transitions. [2025-02-05 10:22:49,693 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 206 transitions. Word has length 56 [2025-02-05 10:22:49,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:22:49,693 INFO L471 AbstractCegarLoop]: Abstraction has 164 states and 206 transitions. [2025-02-05 10:22:49,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2025-02-05 10:22:49,694 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 206 transitions. [2025-02-05 10:22:49,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2025-02-05 10:22:49,695 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:22:49,695 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:22:49,695 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-02-05 10:22:49,696 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:22:49,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:22:49,700 INFO L85 PathProgramCache]: Analyzing trace with hash -741499950, now seen corresponding path program 1 times [2025-02-05 10:22:49,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:22:49,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097622560] [2025-02-05 10:22:49,700 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:22:49,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:22:49,711 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 56 statements into 1 equivalence classes. [2025-02-05 10:22:49,727 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 56 of 56 statements. [2025-02-05 10:22:49,741 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:22:49,742 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:22:49,948 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 11 proven. 12 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2025-02-05 10:22:49,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:22:49,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097622560] [2025-02-05 10:22:49,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097622560] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:22:49,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878699227] [2025-02-05 10:22:49,948 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:22:49,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:22:49,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:22:49,954 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:22:49,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-02-05 10:22:50,002 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 56 statements into 1 equivalence classes. [2025-02-05 10:22:50,021 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 56 of 56 statements. [2025-02-05 10:22:50,021 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:22:50,021 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:22:50,025 INFO L256 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-02-05 10:22:50,027 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:22:50,157 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 16 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-02-05 10:22:50,158 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:22:50,309 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 11 proven. 12 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2025-02-05 10:22:50,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [878699227] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:22:50,309 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:22:50,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 11] total 22 [2025-02-05 10:22:50,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316900272] [2025-02-05 10:22:50,309 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:22:50,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-02-05 10:22:50,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:22:50,310 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-02-05 10:22:50,310 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2025-02-05 10:22:50,310 INFO L87 Difference]: Start difference. First operand 164 states and 206 transitions. Second operand has 22 states, 22 states have (on average 2.6818181818181817) internal successors, (59), 22 states have internal predecessors, (59), 4 states have call successors, (11), 3 states have call predecessors, (11), 9 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2025-02-05 10:22:50,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:22:50,561 INFO L93 Difference]: Finished difference Result 196 states and 242 transitions. [2025-02-05 10:22:50,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-02-05 10:22:50,561 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.6818181818181817) internal successors, (59), 22 states have internal predecessors, (59), 4 states have call successors, (11), 3 states have call predecessors, (11), 9 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) Word has length 56 [2025-02-05 10:22:50,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:22:50,562 INFO L225 Difference]: With dead ends: 196 [2025-02-05 10:22:50,562 INFO L226 Difference]: Without dead ends: 107 [2025-02-05 10:22:50,563 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 97 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=117, Invalid=695, Unknown=0, NotChecked=0, Total=812 [2025-02-05 10:22:50,563 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 22 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-05 10:22:50,564 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 244 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-05 10:22:50,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2025-02-05 10:22:50,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 102. [2025-02-05 10:22:50,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 85 states have (on average 1.2705882352941176) internal successors, (108), 84 states have internal predecessors, (108), 9 states have call successors, (9), 5 states have call predecessors, (9), 7 states have return successors, (13), 12 states have call predecessors, (13), 9 states have call successors, (13) [2025-02-05 10:22:50,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 130 transitions. [2025-02-05 10:22:50,616 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 130 transitions. Word has length 56 [2025-02-05 10:22:50,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:22:50,617 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 130 transitions. [2025-02-05 10:22:50,617 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.6818181818181817) internal successors, (59), 22 states have internal predecessors, (59), 4 states have call successors, (11), 3 states have call predecessors, (11), 9 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2025-02-05 10:22:50,617 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 130 transitions. [2025-02-05 10:22:50,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2025-02-05 10:22:50,617 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:22:50,617 INFO L218 NwaCegarLoop]: trace histogram [8, 6, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:22:50,630 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-02-05 10:22:50,817 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 [2025-02-05 10:22:50,818 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:22:50,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:22:50,819 INFO L85 PathProgramCache]: Analyzing trace with hash 807129652, now seen corresponding path program 7 times [2025-02-05 10:22:50,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:22:50,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86321855] [2025-02-05 10:22:50,819 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-05 10:22:50,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:22:50,826 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 58 statements into 1 equivalence classes. [2025-02-05 10:22:50,843 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 58 of 58 statements. [2025-02-05 10:22:50,845 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:22:50,845 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:22:50,939 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 1 proven. 24 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2025-02-05 10:22:50,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:22:50,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86321855] [2025-02-05 10:22:50,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86321855] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:22:50,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [392972071] [2025-02-05 10:22:50,939 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-05 10:22:50,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:22:50,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:22:50,941 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:22:50,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-02-05 10:22:50,982 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 58 statements into 1 equivalence classes. [2025-02-05 10:22:51,002 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 58 of 58 statements. [2025-02-05 10:22:51,002 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:22:51,002 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:22:51,003 INFO L256 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-05 10:22:51,004 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:22:51,063 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 11 proven. 22 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2025-02-05 10:22:51,063 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:22:51,118 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2025-02-05 10:22:51,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [392972071] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:22:51,118 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:22:51,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2025-02-05 10:22:51,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212595881] [2025-02-05 10:22:51,118 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:22:51,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-02-05 10:22:51,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:22:51,119 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-02-05 10:22:51,119 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2025-02-05 10:22:51,120 INFO L87 Difference]: Start difference. First operand 102 states and 130 transitions. Second operand has 20 states, 20 states have (on average 2.6) internal successors, (52), 20 states have internal predecessors, (52), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-02-05 10:22:51,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:22:51,243 INFO L93 Difference]: Finished difference Result 202 states and 263 transitions. [2025-02-05 10:22:51,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-05 10:22:51,243 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.6) internal successors, (52), 20 states have internal predecessors, (52), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 58 [2025-02-05 10:22:51,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:22:51,244 INFO L225 Difference]: With dead ends: 202 [2025-02-05 10:22:51,244 INFO L226 Difference]: Without dead ends: 126 [2025-02-05 10:22:51,244 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 102 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=147, Invalid=405, Unknown=0, NotChecked=0, Total=552 [2025-02-05 10:22:51,245 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 16 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 10:22:51,245 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 221 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 10:22:51,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2025-02-05 10:22:51,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 109. [2025-02-05 10:22:51,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 92 states have (on average 1.2717391304347827) internal successors, (117), 91 states have internal predecessors, (117), 9 states have call successors, (9), 5 states have call predecessors, (9), 7 states have return successors, (13), 12 states have call predecessors, (13), 9 states have call successors, (13) [2025-02-05 10:22:51,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 139 transitions. [2025-02-05 10:22:51,264 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 139 transitions. Word has length 58 [2025-02-05 10:22:51,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:22:51,264 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 139 transitions. [2025-02-05 10:22:51,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.6) internal successors, (52), 20 states have internal predecessors, (52), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-02-05 10:22:51,265 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 139 transitions. [2025-02-05 10:22:51,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2025-02-05 10:22:51,265 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:22:51,265 INFO L218 NwaCegarLoop]: trace histogram [9, 8, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:22:51,274 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-02-05 10:22:51,466 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 [2025-02-05 10:22:51,466 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:22:51,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:22:51,467 INFO L85 PathProgramCache]: Analyzing trace with hash -660927799, now seen corresponding path program 8 times [2025-02-05 10:22:51,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:22:51,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038874841] [2025-02-05 10:22:51,467 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 10:22:51,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:22:51,480 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 63 statements into 2 equivalence classes. [2025-02-05 10:22:51,499 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 63 of 63 statements. [2025-02-05 10:22:51,499 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 10:22:51,499 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:22:51,815 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 15 proven. 48 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2025-02-05 10:22:51,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:22:51,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038874841] [2025-02-05 10:22:51,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038874841] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:22:51,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66746341] [2025-02-05 10:22:51,816 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 10:22:51,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:22:51,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:22:51,819 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:22:51,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-02-05 10:22:51,864 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 63 statements into 2 equivalence classes. [2025-02-05 10:22:51,887 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 63 of 63 statements. [2025-02-05 10:22:51,887 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 10:22:51,887 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:22:51,888 INFO L256 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-05 10:22:51,890 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:22:51,962 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 41 proven. 30 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2025-02-05 10:22:51,962 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:22:52,041 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 9 proven. 54 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2025-02-05 10:22:52,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [66746341] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:22:52,042 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:22:52,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2025-02-05 10:22:52,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3915380] [2025-02-05 10:22:52,042 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:22:52,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-05 10:22:52,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:22:52,043 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-05 10:22:52,043 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2025-02-05 10:22:52,043 INFO L87 Difference]: Start difference. First operand 109 states and 139 transitions. Second operand has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 14 states have internal predecessors, (48), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-02-05 10:22:52,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:22:52,160 INFO L93 Difference]: Finished difference Result 114 states and 144 transitions. [2025-02-05 10:22:52,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-05 10:22:52,161 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 14 states have internal predecessors, (48), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 63 [2025-02-05 10:22:52,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:22:52,162 INFO L225 Difference]: With dead ends: 114 [2025-02-05 10:22:52,162 INFO L226 Difference]: Without dead ends: 110 [2025-02-05 10:22:52,162 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 115 SyntacticMatches, 6 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2025-02-05 10:22:52,163 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 10 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 10:22:52,163 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 149 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 10:22:52,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2025-02-05 10:22:52,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2025-02-05 10:22:52,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 93 states have (on average 1.2580645161290323) internal successors, (117), 92 states have internal predecessors, (117), 9 states have call successors, (9), 5 states have call predecessors, (9), 7 states have return successors, (13), 12 states have call predecessors, (13), 9 states have call successors, (13) [2025-02-05 10:22:52,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 139 transitions. [2025-02-05 10:22:52,184 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 139 transitions. Word has length 63 [2025-02-05 10:22:52,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:22:52,184 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 139 transitions. [2025-02-05 10:22:52,184 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 14 states have internal predecessors, (48), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-02-05 10:22:52,184 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 139 transitions. [2025-02-05 10:22:52,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2025-02-05 10:22:52,185 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:22:52,185 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:22:52,191 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-02-05 10:22:52,385 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 [2025-02-05 10:22:52,386 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:22:52,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:22:52,387 INFO L85 PathProgramCache]: Analyzing trace with hash 987029985, now seen corresponding path program 9 times [2025-02-05 10:22:52,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:22:52,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270782716] [2025-02-05 10:22:52,387 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 10:22:52,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:22:52,395 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 64 statements into 11 equivalence classes. [2025-02-05 10:22:52,447 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) and asserted 64 of 64 statements. [2025-02-05 10:22:52,447 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2025-02-05 10:22:52,447 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-05 10:22:52,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [662088377] [2025-02-05 10:22:52,448 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 10:22:52,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:22:52,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:22:52,450 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:22:52,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-02-05 10:22:52,499 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 64 statements into 11 equivalence classes. [2025-02-05 10:22:53,559 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) and asserted 64 of 64 statements. [2025-02-05 10:22:53,560 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2025-02-05 10:22:53,560 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:22:53,563 WARN L254 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 144 conjuncts are in the unsatisfiable core [2025-02-05 10:22:53,567 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:22:53,602 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 [2025-02-05 10:22:53,624 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 [2025-02-05 10:22:53,649 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:22:53,650 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 [2025-02-05 10:22:53,748 INFO L349 Elim1Store]: treesize reduction 48, result has 31.4 percent of original size [2025-02-05 10:22:53,749 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 35 treesize of output 40 [2025-02-05 10:22:53,809 INFO L349 Elim1Store]: treesize reduction 76, result has 22.4 percent of original size [2025-02-05 10:22:53,810 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 46 treesize of output 54 [2025-02-05 10:22:53,891 INFO L349 Elim1Store]: treesize reduction 106, result has 17.2 percent of original size [2025-02-05 10:22:53,891 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 57 treesize of output 68 [2025-02-05 10:22:54,090 INFO L349 Elim1Store]: treesize reduction 168, result has 21.5 percent of original size [2025-02-05 10:22:54,091 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 20 case distinctions, treesize of input 66 treesize of output 80 [2025-02-05 10:22:54,223 INFO L349 Elim1Store]: treesize reduction 196, result has 16.6 percent of original size [2025-02-05 10:22:54,224 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 10 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 25 case distinctions, treesize of input 77 treesize of output 94 [2025-02-05 10:22:54,362 INFO L349 Elim1Store]: treesize reduction 254, result has 15.3 percent of original size [2025-02-05 10:22:54,362 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 13 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 33 case distinctions, treesize of input 88 treesize of output 108 [2025-02-05 10:22:56,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-05 10:22:56,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-05 10:22:56,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-05 10:22:56,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-05 10:22:56,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-05 10:22:56,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-05 10:22:56,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-05 10:22:56,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-05 10:22:56,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-05 10:22:56,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-05 10:22:56,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-05 10:22:56,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-05 10:22:56,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-05 10:22:56,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-05 10:22:56,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-05 10:22:56,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-05 10:22:56,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-05 10:22:57,183 INFO L349 Elim1Store]: treesize reduction 2100, result has 9.4 percent of original size [2025-02-05 10:22:57,183 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 28 select indices, 28 select index equivalence classes, 30 disjoint index pairs (out of 378 index pairs), introduced 28 new quantified variables, introduced 402 case distinctions, treesize of input 281 treesize of output 346 [2025-02-05 10:23:00,361 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 11 proven. 144 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-05 10:23:00,361 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:23:05,258 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 785 treesize of output 767 [2025-02-05 10:23:05,729 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:23:05,743 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 714217336959687 treesize of output 676833941615303