./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-examples/standard_password_ground.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 48c9605d 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-examples/standard_password_ground.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3cb77685c99da394e56759788276300560cc521e5b9b98850714a1baff20c383 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-07 16:49:05,641 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-07 16:49:05,691 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-07 16:49:05,695 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-07 16:49:05,697 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-07 16:49:05,721 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-07 16:49:05,722 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-07 16:49:05,722 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-07 16:49:05,723 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-07 16:49:05,723 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-07 16:49:05,724 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-07 16:49:05,724 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-07 16:49:05,724 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-07 16:49:05,724 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-07 16:49:05,724 INFO L153 SettingsManager]: * Use SBE=true [2025-02-07 16:49:05,725 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-07 16:49:05,725 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-07 16:49:05,725 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-07 16:49:05,725 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-07 16:49:05,726 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-07 16:49:05,726 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-07 16:49:05,726 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-07 16:49:05,726 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-07 16:49:05,726 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-07 16:49:05,726 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-07 16:49:05,726 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-07 16:49:05,726 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-07 16:49:05,726 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-07 16:49:05,726 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-07 16:49:05,726 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-07 16:49:05,726 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-07 16:49:05,727 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-07 16:49:05,727 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-07 16:49:05,727 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-07 16:49:05,727 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-07 16:49:05,727 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-07 16:49:05,727 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-07 16:49:05,728 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-07 16:49:05,728 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-07 16:49:05,728 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-07 16:49:05,728 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-07 16:49:05,728 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-07 16:49:05,728 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-07 16:49:05,728 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 -> 3cb77685c99da394e56759788276300560cc521e5b9b98850714a1baff20c383 [2025-02-07 16:49:05,938 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-07 16:49:05,945 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-07 16:49:05,947 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-07 16:49:05,948 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-07 16:49:05,948 INFO L274 PluginConnector]: CDTParser initialized [2025-02-07 16:49:05,949 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/standard_password_ground.i [2025-02-07 16:49:07,052 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/bd596cdd3/84f44c193a7e475aa8741c38605ddd88/FLAG8405d85b8 [2025-02-07 16:49:07,291 INFO L384 CDTParser]: Found 1 translation units. [2025-02-07 16:49:07,292 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/array-examples/standard_password_ground.i [2025-02-07 16:49:07,297 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/bd596cdd3/84f44c193a7e475aa8741c38605ddd88/FLAG8405d85b8 [2025-02-07 16:49:07,631 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/bd596cdd3/84f44c193a7e475aa8741c38605ddd88 [2025-02-07 16:49:07,633 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-07 16:49:07,634 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-07 16:49:07,635 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-07 16:49:07,635 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-07 16:49:07,640 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-07 16:49:07,640 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 04:49:07" (1/1) ... [2025-02-07 16:49:07,641 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47167c96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:49:07, skipping insertion in model container [2025-02-07 16:49:07,641 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 04:49:07" (1/1) ... [2025-02-07 16:49:07,651 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-07 16:49:07,747 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-examples/standard_password_ground.i[817,830] [2025-02-07 16:49:07,761 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-07 16:49:07,767 INFO L200 MainTranslator]: Completed pre-run [2025-02-07 16:49:07,775 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-examples/standard_password_ground.i[817,830] [2025-02-07 16:49:07,784 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-07 16:49:07,796 INFO L204 MainTranslator]: Completed translation [2025-02-07 16:49:07,797 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:49:07 WrapperNode [2025-02-07 16:49:07,797 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-07 16:49:07,798 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-07 16:49:07,799 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-07 16:49:07,799 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-07 16:49:07,804 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:49:07" (1/1) ... [2025-02-07 16:49:07,809 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:49:07" (1/1) ... [2025-02-07 16:49:07,820 INFO L138 Inliner]: procedures = 16, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 66 [2025-02-07 16:49:07,820 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-07 16:49:07,821 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-07 16:49:07,821 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-07 16:49:07,821 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-07 16:49:07,827 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:49:07" (1/1) ... [2025-02-07 16:49:07,827 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:49:07" (1/1) ... [2025-02-07 16:49:07,832 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:49:07" (1/1) ... [2025-02-07 16:49:07,843 INFO L175 MemorySlicer]: Split 8 memory accesses to 3 slices as follows [2, 3, 3]. 38 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2025-02-07 16:49:07,845 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:49:07" (1/1) ... [2025-02-07 16:49:07,845 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:49:07" (1/1) ... [2025-02-07 16:49:07,850 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:49:07" (1/1) ... [2025-02-07 16:49:07,853 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:49:07" (1/1) ... [2025-02-07 16:49:07,853 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:49:07" (1/1) ... [2025-02-07 16:49:07,857 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:49:07" (1/1) ... [2025-02-07 16:49:07,858 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-07 16:49:07,859 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-07 16:49:07,859 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-07 16:49:07,859 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-07 16:49:07,860 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:49:07" (1/1) ... [2025-02-07 16:49:07,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-07 16:49:07,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 16:49:07,885 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) [2025-02-07 16:49:07,890 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 [2025-02-07 16:49:07,909 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-07 16:49:07,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-07 16:49:07,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-07 16:49:07,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-07 16:49:07,910 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-07 16:49:07,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-07 16:49:07,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-07 16:49:07,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-02-07 16:49:07,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-07 16:49:07,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-07 16:49:07,910 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-07 16:49:07,910 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-07 16:49:07,910 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-02-07 16:49:07,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-07 16:49:07,966 INFO L257 CfgBuilder]: Building ICFG [2025-02-07 16:49:07,967 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-07 16:49:08,066 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L17: call ULTIMATE.dealloc(main_~#password~0#1.base, main_~#password~0#1.offset);havoc main_~#password~0#1.base, main_~#password~0#1.offset;call ULTIMATE.dealloc(main_~#guess~0#1.base, main_~#guess~0#1.offset);havoc main_~#guess~0#1.base, main_~#guess~0#1.offset; [2025-02-07 16:49:08,071 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2025-02-07 16:49:08,072 INFO L308 CfgBuilder]: Performing block encoding [2025-02-07 16:49:08,079 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-07 16:49:08,079 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-07 16:49:08,079 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 04:49:08 BoogieIcfgContainer [2025-02-07 16:49:08,079 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-07 16:49:08,081 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-07 16:49:08,081 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-07 16:49:08,084 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-07 16:49:08,085 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 04:49:07" (1/3) ... [2025-02-07 16:49:08,085 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c7dd4c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 04:49:08, skipping insertion in model container [2025-02-07 16:49:08,086 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:49:07" (2/3) ... [2025-02-07 16:49:08,086 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c7dd4c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 04:49:08, skipping insertion in model container [2025-02-07 16:49:08,087 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 04:49:08" (3/3) ... [2025-02-07 16:49:08,088 INFO L128 eAbstractionObserver]: Analyzing ICFG standard_password_ground.i [2025-02-07 16:49:08,098 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-07 16:49:08,099 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG standard_password_ground.i that has 1 procedures, 15 locations, 1 initial locations, 3 loop locations, and 1 error locations. [2025-02-07 16:49:08,143 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-07 16:49:08,152 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;@467326d3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-07 16:49:08,152 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-07 16:49:08,155 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 14 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:49:08,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-02-07 16:49:08,159 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 16:49:08,159 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-07 16:49:08,160 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 16:49:08,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 16:49:08,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1450590384, now seen corresponding path program 1 times [2025-02-07 16:49:08,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 16:49:08,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974914154] [2025-02-07 16:49:08,170 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 16:49:08,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 16:49:08,229 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-07 16:49:08,245 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-07 16:49:08,246 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 16:49:08,246 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:49:08,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 16:49:08,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 16:49:08,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974914154] [2025-02-07 16:49:08,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974914154] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 16:49:08,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 16:49:08,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-07 16:49:08,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732181689] [2025-02-07 16:49:08,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 16:49:08,346 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-07 16:49:08,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 16:49:08,361 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-07 16:49:08,361 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-07 16:49:08,362 INFO L87 Difference]: Start difference. First operand has 15 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 14 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:49:08,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 16:49:08,399 INFO L93 Difference]: Finished difference Result 32 states and 44 transitions. [2025-02-07 16:49:08,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-07 16:49:08,401 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2025-02-07 16:49:08,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 16:49:08,405 INFO L225 Difference]: With dead ends: 32 [2025-02-07 16:49:08,405 INFO L226 Difference]: Without dead ends: 15 [2025-02-07 16:49:08,406 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-07 16:49:08,408 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 3 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 16:49:08,409 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 28 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 16:49:08,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2025-02-07 16:49:08,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 13. [2025-02-07 16:49:08,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:49:08,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2025-02-07 16:49:08,429 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 16 transitions. Word has length 7 [2025-02-07 16:49:08,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 16:49:08,429 INFO L471 AbstractCegarLoop]: Abstraction has 13 states and 16 transitions. [2025-02-07 16:49:08,430 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:49:08,430 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 16 transitions. [2025-02-07 16:49:08,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-02-07 16:49:08,430 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 16:49:08,430 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 16:49:08,430 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-07 16:49:08,430 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 16:49:08,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 16:49:08,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1314877038, now seen corresponding path program 1 times [2025-02-07 16:49:08,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 16:49:08,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982619330] [2025-02-07 16:49:08,434 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 16:49:08,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 16:49:08,448 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-07 16:49:08,457 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-07 16:49:08,459 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 16:49:08,459 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:49:08,520 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-07 16:49:08,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 16:49:08,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982619330] [2025-02-07 16:49:08,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982619330] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 16:49:08,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904167872] [2025-02-07 16:49:08,520 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 16:49:08,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:49:08,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 16:49:08,522 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) [2025-02-07 16:49:08,523 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 [2025-02-07 16:49:08,561 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-07 16:49:08,577 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-07 16:49:08,577 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 16:49:08,577 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:49:08,579 INFO L256 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-07 16:49:08,582 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 16:49:08,603 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-07 16:49:08,603 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-07 16:49:08,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1904167872] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 16:49:08,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-07 16:49:08,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2025-02-07 16:49:08,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148485330] [2025-02-07 16:49:08,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 16:49:08,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-07 16:49:08,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 16:49:08,605 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-07 16:49:08,605 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-07 16:49:08,605 INFO L87 Difference]: Start difference. First operand 13 states and 16 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:49:08,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 16:49:08,613 INFO L93 Difference]: Finished difference Result 22 states and 27 transitions. [2025-02-07 16:49:08,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-07 16:49:08,614 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2025-02-07 16:49:08,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 16:49:08,615 INFO L225 Difference]: With dead ends: 22 [2025-02-07 16:49:08,615 INFO L226 Difference]: Without dead ends: 13 [2025-02-07 16:49:08,615 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-07 16:49:08,615 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 2 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 16:49:08,616 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 28 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 16:49:08,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2025-02-07 16:49:08,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2025-02-07 16:49:08,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:49:08,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2025-02-07 16:49:08,620 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 11 [2025-02-07 16:49:08,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 16:49:08,620 INFO L471 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2025-02-07 16:49:08,620 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:49:08,621 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2025-02-07 16:49:08,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-02-07 16:49:08,621 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 16:49:08,622 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 16:49:08,629 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-07 16:49:08,823 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 [2025-02-07 16:49:08,823 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 16:49:08,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 16:49:08,823 INFO L85 PathProgramCache]: Analyzing trace with hash -427373357, now seen corresponding path program 1 times [2025-02-07 16:49:08,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 16:49:08,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761050249] [2025-02-07 16:49:08,823 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 16:49:08,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 16:49:08,830 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-07 16:49:08,839 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-07 16:49:08,839 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 16:49:08,839 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:49:08,904 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-07 16:49:08,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 16:49:08,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761050249] [2025-02-07 16:49:08,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761050249] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 16:49:08,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1175583567] [2025-02-07 16:49:08,905 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 16:49:08,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:49:08,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 16:49:08,907 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) [2025-02-07 16:49:08,908 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 [2025-02-07 16:49:08,950 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-07 16:49:08,961 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-07 16:49:08,962 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 16:49:08,962 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:49:08,962 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-07 16:49:08,963 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 16:49:08,982 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-07 16:49:08,982 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 16:49:08,999 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-07 16:49:08,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1175583567] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 16:49:08,999 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 16:49:09,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2025-02-07 16:49:09,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224878919] [2025-02-07 16:49:09,000 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 16:49:09,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-07 16:49:09,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 16:49:09,001 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-07 16:49:09,001 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-02-07 16:49:09,001 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:49:09,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 16:49:09,054 INFO L93 Difference]: Finished difference Result 35 states and 44 transitions. [2025-02-07 16:49:09,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-07 16:49:09,054 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2025-02-07 16:49:09,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 16:49:09,055 INFO L225 Difference]: With dead ends: 35 [2025-02-07 16:49:09,055 INFO L226 Difference]: Without dead ends: 25 [2025-02-07 16:49:09,055 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-02-07 16:49:09,055 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 14 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 16:49:09,056 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 20 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 16:49:09,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2025-02-07 16:49:09,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2025-02-07 16:49:09,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.125) internal successors, (27), 24 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:49:09,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2025-02-07 16:49:09,058 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 11 [2025-02-07 16:49:09,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 16:49:09,058 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2025-02-07 16:49:09,058 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:49:09,058 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2025-02-07 16:49:09,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-02-07 16:49:09,058 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 16:49:09,059 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 16:49:09,064 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-07 16:49:09,259 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:49:09,259 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 16:49:09,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 16:49:09,260 INFO L85 PathProgramCache]: Analyzing trace with hash 481738384, now seen corresponding path program 2 times [2025-02-07 16:49:09,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 16:49:09,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449805010] [2025-02-07 16:49:09,260 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 16:49:09,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 16:49:09,275 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 23 statements into 2 equivalence classes. [2025-02-07 16:49:09,292 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 23 of 23 statements. [2025-02-07 16:49:09,292 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 16:49:09,292 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:49:09,397 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-07 16:49:09,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 16:49:09,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449805010] [2025-02-07 16:49:09,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449805010] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 16:49:09,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1284698714] [2025-02-07 16:49:09,401 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 16:49:09,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:49:09,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 16:49:09,404 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) [2025-02-07 16:49:09,405 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 [2025-02-07 16:49:09,456 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 23 statements into 2 equivalence classes. [2025-02-07 16:49:09,480 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 23 of 23 statements. [2025-02-07 16:49:09,480 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 16:49:09,480 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:49:09,481 INFO L256 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-07 16:49:09,482 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 16:49:09,498 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-07 16:49:09,500 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 16:49:09,553 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-07 16:49:09,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1284698714] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 16:49:09,553 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 16:49:09,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2025-02-07 16:49:09,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265821985] [2025-02-07 16:49:09,553 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 16:49:09,554 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-07 16:49:09,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 16:49:09,554 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-07 16:49:09,554 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2025-02-07 16:49:09,555 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand has 12 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 11 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:49:09,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 16:49:09,609 INFO L93 Difference]: Finished difference Result 68 states and 83 transitions. [2025-02-07 16:49:09,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-07 16:49:09,610 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 11 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2025-02-07 16:49:09,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 16:49:09,610 INFO L225 Difference]: With dead ends: 68 [2025-02-07 16:49:09,611 INFO L226 Difference]: Without dead ends: 49 [2025-02-07 16:49:09,611 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2025-02-07 16:49:09,612 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 32 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 16:49:09,613 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 49 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 16:49:09,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2025-02-07 16:49:09,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2025-02-07 16:49:09,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.0625) internal successors, (51), 48 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:49:09,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 51 transitions. [2025-02-07 16:49:09,618 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 51 transitions. Word has length 23 [2025-02-07 16:49:09,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 16:49:09,618 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 51 transitions. [2025-02-07 16:49:09,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 11 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:49:09,618 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 51 transitions. [2025-02-07 16:49:09,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2025-02-07 16:49:09,619 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 16:49:09,619 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 16:49:09,624 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-07 16:49:09,823 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:49:09,823 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 16:49:09,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 16:49:09,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1765742224, now seen corresponding path program 3 times [2025-02-07 16:49:09,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 16:49:09,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342540406] [2025-02-07 16:49:09,823 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-07 16:49:09,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 16:49:09,842 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 47 statements into 11 equivalence classes. [2025-02-07 16:49:09,857 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 17 of 47 statements. [2025-02-07 16:49:09,858 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-02-07 16:49:09,858 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:49:10,176 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2025-02-07 16:49:10,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 16:49:10,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342540406] [2025-02-07 16:49:10,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342540406] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 16:49:10,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053613094] [2025-02-07 16:49:10,176 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-07 16:49:10,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:49:10,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 16:49:10,178 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) [2025-02-07 16:49:10,180 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 [2025-02-07 16:49:10,227 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 47 statements into 11 equivalence classes. [2025-02-07 16:49:10,244 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 17 of 47 statements. [2025-02-07 16:49:10,244 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-02-07 16:49:10,244 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:49:10,245 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-02-07 16:49:10,247 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 16:49:10,529 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2025-02-07 16:49:10,529 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 16:49:10,628 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-02-07 16:49:10,629 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 23 [2025-02-07 16:49:10,638 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2025-02-07 16:49:10,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2053613094] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 16:49:10,639 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 16:49:10,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2025-02-07 16:49:10,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840552209] [2025-02-07 16:49:10,639 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 16:49:10,639 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-07 16:49:10,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 16:49:10,639 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-07 16:49:10,640 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2025-02-07 16:49:10,640 INFO L87 Difference]: Start difference. First operand 49 states and 51 transitions. Second operand has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:49:10,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 16:49:10,707 INFO L93 Difference]: Finished difference Result 54 states and 56 transitions. [2025-02-07 16:49:10,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-07 16:49:10,707 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2025-02-07 16:49:10,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 16:49:10,708 INFO L225 Difference]: With dead ends: 54 [2025-02-07 16:49:10,708 INFO L226 Difference]: Without dead ends: 52 [2025-02-07 16:49:10,708 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 87 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2025-02-07 16:49:10,709 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 12 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 16:49:10,709 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 39 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 16:49:10,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2025-02-07 16:49:10,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2025-02-07 16:49:10,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.06) internal successors, (53), 50 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:49:10,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2025-02-07 16:49:10,714 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 53 transitions. Word has length 47 [2025-02-07 16:49:10,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 16:49:10,714 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 53 transitions. [2025-02-07 16:49:10,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:49:10,714 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 53 transitions. [2025-02-07 16:49:10,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2025-02-07 16:49:10,715 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 16:49:10,715 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 16:49:10,720 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-07 16:49:10,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:49:10,919 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 16:49:10,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 16:49:10,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1533720028, now seen corresponding path program 1 times [2025-02-07 16:49:10,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 16:49:10,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166515394] [2025-02-07 16:49:10,920 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 16:49:10,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 16:49:10,933 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 50 statements into 1 equivalence classes. [2025-02-07 16:49:10,941 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 50 of 50 statements. [2025-02-07 16:49:10,942 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 16:49:10,942 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:49:11,115 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2025-02-07 16:49:11,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 16:49:11,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166515394] [2025-02-07 16:49:11,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166515394] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 16:49:11,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707829060] [2025-02-07 16:49:11,116 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 16:49:11,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:49:11,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 16:49:11,118 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) [2025-02-07 16:49:11,120 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 [2025-02-07 16:49:11,180 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 50 statements into 1 equivalence classes. [2025-02-07 16:49:11,214 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 50 of 50 statements. [2025-02-07 16:49:11,214 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 16:49:11,214 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:49:11,217 INFO L256 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-02-07 16:49:11,219 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 16:49:11,245 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2025-02-07 16:49:11,246 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 16:49:11,438 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2025-02-07 16:49:11,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1707829060] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 16:49:11,439 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 16:49:11,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2025-02-07 16:49:11,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723413814] [2025-02-07 16:49:11,440 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 16:49:11,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-02-07 16:49:11,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 16:49:11,441 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-02-07 16:49:11,441 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2025-02-07 16:49:11,441 INFO L87 Difference]: Start difference. First operand 51 states and 53 transitions. Second operand has 25 states, 25 states have (on average 1.44) internal successors, (36), 24 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:49:11,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 16:49:11,560 INFO L93 Difference]: Finished difference Result 138 states and 165 transitions. [2025-02-07 16:49:11,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-02-07 16:49:11,560 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.44) internal successors, (36), 24 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2025-02-07 16:49:11,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 16:49:11,561 INFO L225 Difference]: With dead ends: 138 [2025-02-07 16:49:11,561 INFO L226 Difference]: Without dead ends: 99 [2025-02-07 16:49:11,562 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2025-02-07 16:49:11,563 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 122 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 16:49:11,563 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 49 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 16:49:11,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2025-02-07 16:49:11,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2025-02-07 16:49:11,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 98 states have (on average 1.030612244897959) internal successors, (101), 98 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:49:11,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 101 transitions. [2025-02-07 16:49:11,576 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 101 transitions. Word has length 50 [2025-02-07 16:49:11,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 16:49:11,576 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 101 transitions. [2025-02-07 16:49:11,576 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.44) internal successors, (36), 24 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:49:11,579 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 101 transitions. [2025-02-07 16:49:11,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2025-02-07 16:49:11,580 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 16:49:11,580 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 16:49:11,588 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-02-07 16:49:11,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:49:11,781 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 16:49:11,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 16:49:11,781 INFO L85 PathProgramCache]: Analyzing trace with hash 322261020, now seen corresponding path program 2 times [2025-02-07 16:49:11,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 16:49:11,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906689065] [2025-02-07 16:49:11,782 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 16:49:11,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 16:49:11,809 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 98 statements into 2 equivalence classes. [2025-02-07 16:49:11,834 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 98 of 98 statements. [2025-02-07 16:49:11,835 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 16:49:11,835 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:49:12,397 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 717 trivial. 0 not checked. [2025-02-07 16:49:12,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 16:49:12,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906689065] [2025-02-07 16:49:12,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906689065] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 16:49:12,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1990170827] [2025-02-07 16:49:12,398 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 16:49:12,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:49:12,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 16:49:12,400 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) [2025-02-07 16:49:12,401 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 [2025-02-07 16:49:12,471 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 98 statements into 2 equivalence classes. [2025-02-07 16:49:12,526 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 98 of 98 statements. [2025-02-07 16:49:12,526 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 16:49:12,527 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:49:12,529 INFO L256 TraceCheckSpWp]: Trace formula consists of 602 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-02-07 16:49:12,531 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 16:49:12,563 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 717 trivial. 0 not checked. [2025-02-07 16:49:12,564 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 16:49:13,184 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 717 trivial. 0 not checked. [2025-02-07 16:49:13,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1990170827] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 16:49:13,185 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 16:49:13,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2025-02-07 16:49:13,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931016271] [2025-02-07 16:49:13,185 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 16:49:13,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2025-02-07 16:49:13,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 16:49:13,186 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2025-02-07 16:49:13,187 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2025-02-07 16:49:13,187 INFO L87 Difference]: Start difference. First operand 99 states and 101 transitions. Second operand has 48 states, 48 states have (on average 1.2083333333333333) internal successors, (58), 47 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:49:13,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 16:49:13,455 INFO L93 Difference]: Finished difference Result 270 states and 321 transitions. [2025-02-07 16:49:13,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2025-02-07 16:49:13,455 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.2083333333333333) internal successors, (58), 47 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2025-02-07 16:49:13,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 16:49:13,456 INFO L225 Difference]: With dead ends: 270 [2025-02-07 16:49:13,456 INFO L226 Difference]: Without dead ends: 195 [2025-02-07 16:49:13,457 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2025-02-07 16:49:13,458 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 348 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-07 16:49:13,458 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [348 Valid, 79 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-07 16:49:13,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2025-02-07 16:49:13,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2025-02-07 16:49:13,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 194 states have (on average 1.0154639175257731) internal successors, (197), 194 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:49:13,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 197 transitions. [2025-02-07 16:49:13,473 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 197 transitions. Word has length 98 [2025-02-07 16:49:13,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 16:49:13,473 INFO L471 AbstractCegarLoop]: Abstraction has 195 states and 197 transitions. [2025-02-07 16:49:13,474 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.2083333333333333) internal successors, (58), 47 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:49:13,474 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 197 transitions. [2025-02-07 16:49:13,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2025-02-07 16:49:13,477 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 16:49:13,477 INFO L218 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 16:49:13,484 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-07 16:49:13,678 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2025-02-07 16:49:13,678 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 16:49:13,678 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 16:49:13,678 INFO L85 PathProgramCache]: Analyzing trace with hash -109992804, now seen corresponding path program 3 times [2025-02-07 16:49:13,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 16:49:13,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988193504] [2025-02-07 16:49:13,679 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-07 16:49:13,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 16:49:13,715 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 194 statements into 47 equivalence classes. [2025-02-07 16:49:13,752 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 35 of 194 statements. [2025-02-07 16:49:13,752 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-02-07 16:49:13,753 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:49:14,117 INFO L134 CoverageAnalysis]: Checked inductivity of 4234 backedges. 0 proven. 227 refuted. 0 times theorem prover too weak. 4007 trivial. 0 not checked. [2025-02-07 16:49:14,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 16:49:14,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988193504] [2025-02-07 16:49:14,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988193504] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 16:49:14,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1730985960] [2025-02-07 16:49:14,118 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-07 16:49:14,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:49:14,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 16:49:14,121 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) [2025-02-07 16:49:14,122 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 [2025-02-07 16:49:14,232 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 194 statements into 47 equivalence classes. [2025-02-07 16:49:14,339 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 35 of 194 statements. [2025-02-07 16:49:14,339 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-02-07 16:49:14,339 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:49:14,341 INFO L256 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-02-07 16:49:14,345 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 16:49:15,502 INFO L134 CoverageAnalysis]: Checked inductivity of 4234 backedges. 0 proven. 227 refuted. 0 times theorem prover too weak. 4007 trivial. 0 not checked. [2025-02-07 16:49:15,503 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 16:49:15,979 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-02-07 16:49:15,979 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 25 [2025-02-07 16:49:16,017 INFO L134 CoverageAnalysis]: Checked inductivity of 4234 backedges. 44 proven. 183 refuted. 0 times theorem prover too weak. 4007 trivial. 0 not checked. [2025-02-07 16:49:16,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1730985960] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 16:49:16,017 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 16:49:16,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2025-02-07 16:49:16,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129858460] [2025-02-07 16:49:16,018 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 16:49:16,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-02-07 16:49:16,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 16:49:16,018 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-02-07 16:49:16,019 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=459, Unknown=0, NotChecked=0, Total=552 [2025-02-07 16:49:16,019 INFO L87 Difference]: Start difference. First operand 195 states and 197 transitions. Second operand has 24 states, 24 states have (on average 2.25) internal successors, (54), 24 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:49:16,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 16:49:16,162 INFO L93 Difference]: Finished difference Result 201 states and 203 transitions. [2025-02-07 16:49:16,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-07 16:49:16,162 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.25) internal successors, (54), 24 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 194 [2025-02-07 16:49:16,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 16:49:16,163 INFO L225 Difference]: With dead ends: 201 [2025-02-07 16:49:16,164 INFO L226 Difference]: Without dead ends: 199 [2025-02-07 16:49:16,164 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 373 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=125, Invalid=577, Unknown=0, NotChecked=0, Total=702 [2025-02-07 16:49:16,164 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 28 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 16:49:16,164 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 85 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 16:49:16,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2025-02-07 16:49:16,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 198. [2025-02-07 16:49:16,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 197 states have (on average 1.015228426395939) internal successors, (200), 197 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:49:16,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 200 transitions. [2025-02-07 16:49:16,185 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 200 transitions. Word has length 194 [2025-02-07 16:49:16,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 16:49:16,187 INFO L471 AbstractCegarLoop]: Abstraction has 198 states and 200 transitions. [2025-02-07 16:49:16,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.25) internal successors, (54), 24 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:49:16,187 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 200 transitions. [2025-02-07 16:49:16,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2025-02-07 16:49:16,192 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 16:49:16,192 INFO L218 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2025-02-07 16:49:16,199 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 [2025-02-07 16:49:16,392 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:49:16,392 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 16:49:16,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 16:49:16,393 INFO L85 PathProgramCache]: Analyzing trace with hash 265296688, now seen corresponding path program 4 times [2025-02-07 16:49:16,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 16:49:16,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106260177] [2025-02-07 16:49:16,393 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-07 16:49:16,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 16:49:16,428 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 197 statements into 2 equivalence classes. [2025-02-07 16:49:16,460 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 197 of 197 statements. [2025-02-07 16:49:16,461 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-07 16:49:16,461 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:49:18,301 INFO L134 CoverageAnalysis]: Checked inductivity of 4239 backedges. 0 proven. 3151 refuted. 0 times theorem prover too weak. 1088 trivial. 0 not checked. [2025-02-07 16:49:18,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 16:49:18,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106260177] [2025-02-07 16:49:18,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106260177] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 16:49:18,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018847735] [2025-02-07 16:49:18,302 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-07 16:49:18,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:49:18,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 16:49:18,304 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) [2025-02-07 16:49:18,305 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 [2025-02-07 16:49:18,428 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 197 statements into 2 equivalence classes. [2025-02-07 16:49:18,523 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 197 of 197 statements. [2025-02-07 16:49:18,523 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-07 16:49:18,523 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:49:18,527 INFO L256 TraceCheckSpWp]: Trace formula consists of 1190 conjuncts, 48 conjuncts are in the unsatisfiable core [2025-02-07 16:49:18,531 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 16:49:18,685 INFO L134 CoverageAnalysis]: Checked inductivity of 4239 backedges. 0 proven. 3151 refuted. 0 times theorem prover too weak. 1088 trivial. 0 not checked. [2025-02-07 16:49:18,685 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 16:49:20,603 INFO L134 CoverageAnalysis]: Checked inductivity of 4239 backedges. 0 proven. 3151 refuted. 0 times theorem prover too weak. 1088 trivial. 0 not checked. [2025-02-07 16:49:20,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1018847735] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 16:49:20,603 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 16:49:20,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 96 [2025-02-07 16:49:20,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707353140] [2025-02-07 16:49:20,603 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 16:49:20,604 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2025-02-07 16:49:20,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 16:49:20,605 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2025-02-07 16:49:20,608 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2025-02-07 16:49:20,608 INFO L87 Difference]: Start difference. First operand 198 states and 200 transitions. Second operand has 96 states, 96 states have (on average 3.0) internal successors, (288), 96 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:49:21,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 16:49:21,190 INFO L93 Difference]: Finished difference Result 540 states and 639 transitions. [2025-02-07 16:49:21,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2025-02-07 16:49:21,190 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 3.0) internal successors, (288), 96 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 197 [2025-02-07 16:49:21,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 16:49:21,192 INFO L225 Difference]: With dead ends: 540 [2025-02-07 16:49:21,192 INFO L226 Difference]: Without dead ends: 390 [2025-02-07 16:49:21,194 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2025-02-07 16:49:21,194 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 4 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 407 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 407 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-07 16:49:21,194 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 151 Invalid, 699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [407 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-07 16:49:21,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2025-02-07 16:49:21,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 390. [2025-02-07 16:49:21,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 1.0077120822622108) internal successors, (392), 389 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:49:21,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 392 transitions. [2025-02-07 16:49:21,214 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 392 transitions. Word has length 197 [2025-02-07 16:49:21,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 16:49:21,215 INFO L471 AbstractCegarLoop]: Abstraction has 390 states and 392 transitions. [2025-02-07 16:49:21,215 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 3.0) internal successors, (288), 96 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:49:21,215 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 392 transitions. [2025-02-07 16:49:21,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2025-02-07 16:49:21,218 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 16:49:21,218 INFO L218 NwaCegarLoop]: trace histogram [94, 94, 94, 94, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2025-02-07 16:49:21,225 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-02-07 16:49:21,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:49:21,418 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 16:49:21,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 16:49:21,419 INFO L85 PathProgramCache]: Analyzing trace with hash 981357104, now seen corresponding path program 5 times [2025-02-07 16:49:21,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 16:49:21,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924354889] [2025-02-07 16:49:21,419 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-07 16:49:21,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 16:49:21,485 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 389 statements into 95 equivalence classes. [2025-02-07 16:49:24,969 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 95 check-sat command(s) and asserted 389 of 389 statements. [2025-02-07 16:49:24,970 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 95 check-sat command(s) [2025-02-07 16:49:24,970 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:49:29,881 INFO L134 CoverageAnalysis]: Checked inductivity of 17679 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 13214 trivial. 0 not checked. [2025-02-07 16:49:29,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 16:49:29,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924354889] [2025-02-07 16:49:29,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924354889] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 16:49:29,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268577513] [2025-02-07 16:49:29,881 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-07 16:49:29,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:49:29,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 16:49:29,883 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) [2025-02-07 16:49:29,884 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 [2025-02-07 16:49:30,085 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 389 statements into 95 equivalence classes.