./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 c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-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-?-c00e63d-m [2025-02-05 09:58:33,470 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-05 09:58:33,542 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-05 09:58:33,547 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-05 09:58:33,548 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-05 09:58:33,572 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-05 09:58:33,573 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-05 09:58:33,573 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-05 09:58:33,573 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-05 09:58:33,573 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-05 09:58:33,573 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-05 09:58:33,574 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-05 09:58:33,574 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-05 09:58:33,574 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-05 09:58:33,574 INFO L153 SettingsManager]: * Use SBE=true [2025-02-05 09:58:33,574 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-05 09:58:33,574 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-05 09:58:33,575 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-05 09:58:33,575 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-05 09:58:33,575 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-05 09:58:33,575 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-05 09:58:33,575 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-05 09:58:33,575 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-05 09:58:33,575 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-05 09:58:33,575 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-05 09:58:33,575 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-05 09:58:33,575 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-05 09:58:33,575 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-05 09:58:33,575 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-05 09:58:33,576 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-05 09:58:33,576 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-05 09:58:33,576 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-05 09:58:33,576 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 09:58:33,576 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-05 09:58:33,576 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-05 09:58:33,576 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-05 09:58:33,576 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-05 09:58:33,576 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-05 09:58:33,576 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-05 09:58:33,576 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-05 09:58:33,576 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-05 09:58:33,576 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-05 09:58:33,576 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-05 09:58:33,576 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 [2025-02-05 09:58:33,867 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-05 09:58:33,876 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-05 09:58:33,880 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-05 09:58:33,881 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-05 09:58:33,881 INFO L274 PluginConnector]: CDTParser initialized [2025-02-05 09:58:33,884 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/standard_password_ground.i [2025-02-05 09:58:35,218 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/478ab1c4e/bf3d649ec8b04e4bafd2dacf5820301d/FLAGefbdf1b25 [2025-02-05 09:58:35,479 INFO L384 CDTParser]: Found 1 translation units. [2025-02-05 09:58:35,479 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/array-examples/standard_password_ground.i [2025-02-05 09:58:35,494 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/478ab1c4e/bf3d649ec8b04e4bafd2dacf5820301d/FLAGefbdf1b25 [2025-02-05 09:58:35,774 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/478ab1c4e/bf3d649ec8b04e4bafd2dacf5820301d [2025-02-05 09:58:35,776 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-05 09:58:35,777 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-05 09:58:35,778 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-05 09:58:35,778 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-05 09:58:35,781 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-05 09:58:35,782 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 09:58:35" (1/1) ... [2025-02-05 09:58:35,782 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41d319fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:58:35, skipping insertion in model container [2025-02-05 09:58:35,782 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 09:58:35" (1/1) ... [2025-02-05 09:58:35,794 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-05 09:58:35,930 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] [2025-02-05 09:58:35,948 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 09:58:35,958 INFO L200 MainTranslator]: Completed pre-run [2025-02-05 09:58:35,968 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] [2025-02-05 09:58:35,979 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 09:58:35,993 INFO L204 MainTranslator]: Completed translation [2025-02-05 09:58:35,993 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:58:35 WrapperNode [2025-02-05 09:58:35,993 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-05 09:58:35,995 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-05 09:58:35,995 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-05 09:58:35,995 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-05 09:58:36,000 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:58:35" (1/1) ... [2025-02-05 09:58:36,007 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:58:35" (1/1) ... [2025-02-05 09:58:36,020 INFO L138 Inliner]: procedures = 16, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 66 [2025-02-05 09:58:36,020 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-05 09:58:36,021 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-05 09:58:36,021 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-05 09:58:36,021 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-05 09:58:36,029 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:58:35" (1/1) ... [2025-02-05 09:58:36,029 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:58:35" (1/1) ... [2025-02-05 09:58:36,034 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:58:35" (1/1) ... [2025-02-05 09:58:36,049 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]. [2025-02-05 09:58:36,050 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:58:35" (1/1) ... [2025-02-05 09:58:36,051 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:58:35" (1/1) ... [2025-02-05 09:58:36,058 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:58:35" (1/1) ... [2025-02-05 09:58:36,060 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:58:35" (1/1) ... [2025-02-05 09:58:36,061 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:58:35" (1/1) ... [2025-02-05 09:58:36,065 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:58:35" (1/1) ... [2025-02-05 09:58:36,067 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-05 09:58:36,068 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-05 09:58:36,068 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-05 09:58:36,068 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-05 09:58:36,068 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:58:35" (1/1) ... [2025-02-05 09:58:36,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 09:58:36,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 09:58:36,102 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-05 09:58:36,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-05 09:58:36,126 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-05 09:58:36,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-05 09:58:36,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-05 09:58:36,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-05 09:58:36,126 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-05 09:58:36,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-05 09:58:36,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-05 09:58:36,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-02-05 09:58:36,127 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-05 09:58:36,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-05 09:58:36,127 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-05 09:58:36,127 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-05 09:58:36,127 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-02-05 09:58:36,127 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-05 09:58:36,179 INFO L257 CfgBuilder]: Building ICFG [2025-02-05 09:58:36,181 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-05 09:58:36,302 INFO L1309 $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; [2025-02-05 09:58:36,307 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2025-02-05 09:58:36,308 INFO L308 CfgBuilder]: Performing block encoding [2025-02-05 09:58:36,314 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-05 09:58:36,315 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-05 09:58:36,315 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 09:58:36 BoogieIcfgContainer [2025-02-05 09:58:36,315 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-05 09:58:36,318 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-05 09:58:36,318 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-05 09:58:36,322 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-05 09:58:36,323 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.02 09:58:35" (1/3) ... [2025-02-05 09:58:36,323 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c8148dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 09:58:36, skipping insertion in model container [2025-02-05 09:58:36,323 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:58:35" (2/3) ... [2025-02-05 09:58:36,324 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c8148dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 09:58:36, skipping insertion in model container [2025-02-05 09:58:36,324 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 09:58:36" (3/3) ... [2025-02-05 09:58:36,325 INFO L128 eAbstractionObserver]: Analyzing ICFG standard_password_ground.i [2025-02-05 09:58:36,338 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-05 09:58:36,339 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG standard_password_ground.i that has 1 procedures, 16 locations, 1 initial locations, 3 loop locations, and 1 error locations. [2025-02-05 09:58:36,383 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-05 09:58:36,393 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;@5b84d31f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-05 09:58:36,393 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-05 09:58:36,398 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 14 states have (on average 1.5) internal successors, (21), 15 states have internal predecessors, (21), 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) [2025-02-05 09:58:36,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-02-05 09:58:36,404 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 09:58:36,404 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 09:58:36,405 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 09:58:36,411 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 09:58:36,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1533390781, now seen corresponding path program 1 times [2025-02-05 09:58:36,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 09:58:36,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274416661] [2025-02-05 09:58:36,419 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 09:58:36,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 09:58:36,474 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-05 09:58:36,488 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-05 09:58:36,488 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 09:58:36,488 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:58:36,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 09:58:36,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 09:58:36,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274416661] [2025-02-05 09:58:36,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274416661] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 09:58:36,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 09:58:36,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-05 09:58:36,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140259022] [2025-02-05 09:58:36,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 09:58:36,584 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 09:58:36,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 09:58:36,598 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 09:58:36,599 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 09:58:36,600 INFO L87 Difference]: Start difference. First operand has 16 states, 14 states have (on average 1.5) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 09:58:36,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 09:58:36,633 INFO L93 Difference]: Finished difference Result 33 states and 45 transitions. [2025-02-05 09:58:36,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 09:58:36,634 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2025-02-05 09:58:36,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 09:58:36,638 INFO L225 Difference]: With dead ends: 33 [2025-02-05 09:58:36,638 INFO L226 Difference]: Without dead ends: 16 [2025-02-05 09:58:36,640 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 09:58:36,646 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 3 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 30 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 [2025-02-05 09:58:36,646 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 30 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 09:58:36,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2025-02-05 09:58:36,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 14. [2025-02-05 09:58:36,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 09:58:36,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2025-02-05 09:58:36,676 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 17 transitions. Word has length 8 [2025-02-05 09:58:36,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 09:58:36,677 INFO L471 AbstractCegarLoop]: Abstraction has 14 states and 17 transitions. [2025-02-05 09:58:36,677 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 09:58:36,677 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 17 transitions. [2025-02-05 09:58:36,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-02-05 09:58:36,678 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 09:58:36,678 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 09:58:36,679 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-05 09:58:36,679 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 09:58:36,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 09:58:36,680 INFO L85 PathProgramCache]: Analyzing trace with hash 973374335, now seen corresponding path program 1 times [2025-02-05 09:58:36,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 09:58:36,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476137022] [2025-02-05 09:58:36,681 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 09:58:36,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 09:58:36,700 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-05 09:58:36,713 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-05 09:58:36,715 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 09:58:36,715 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:58:36,817 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-05 09:58:36,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 09:58:36,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476137022] [2025-02-05 09:58:36,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476137022] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 09:58:36,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1075721289] [2025-02-05 09:58:36,818 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 09:58:36,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 09:58:36,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 09:58:36,821 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 09:58:36,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-05 09:58:36,864 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-05 09:58:36,881 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-05 09:58:36,881 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 09:58:36,881 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:58:36,883 INFO L256 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 09:58:36,885 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 09:58:36,910 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-05 09:58:36,911 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 09:58:36,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1075721289] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 09:58:36,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 09:58:36,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2025-02-05 09:58:36,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633897905] [2025-02-05 09:58:36,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 09:58:36,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 09:58:36,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 09:58:36,912 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 09:58:36,915 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-05 09:58:36,915 INFO L87 Difference]: Start difference. First operand 14 states and 17 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 09:58:36,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 09:58:36,925 INFO L93 Difference]: Finished difference Result 23 states and 28 transitions. [2025-02-05 09:58:36,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 09:58:36,926 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2025-02-05 09:58:36,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 09:58:36,926 INFO L225 Difference]: With dead ends: 23 [2025-02-05 09:58:36,927 INFO L226 Difference]: Without dead ends: 14 [2025-02-05 09:58:36,927 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-05 09:58:36,927 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 2 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 30 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 [2025-02-05 09:58:36,928 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 30 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 09:58:36,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2025-02-05 09:58:36,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2025-02-05 09:58:36,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 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) [2025-02-05 09:58:36,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2025-02-05 09:58:36,933 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 12 [2025-02-05 09:58:36,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 09:58:36,933 INFO L471 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2025-02-05 09:58:36,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2025-02-05 09:58:36,934 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2025-02-05 09:58:36,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-02-05 09:58:36,935 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 09:58:36,935 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 09:58:36,944 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-05 09:58:37,139 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 09:58:37,139 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 09:58:37,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 09:58:37,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1860878016, now seen corresponding path program 1 times [2025-02-05 09:58:37,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 09:58:37,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089961591] [2025-02-05 09:58:37,140 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 09:58:37,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 09:58:37,151 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-05 09:58:37,162 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-05 09:58:37,165 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 09:58:37,166 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:58:37,226 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-05 09:58:37,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 09:58:37,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089961591] [2025-02-05 09:58:37,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089961591] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 09:58:37,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245656831] [2025-02-05 09:58:37,227 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 09:58:37,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 09:58:37,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 09:58:37,229 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 09:58:37,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-05 09:58:37,281 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-05 09:58:37,305 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-05 09:58:37,305 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 09:58:37,306 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:58:37,307 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 09:58:37,309 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 09:58:37,343 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-05 09:58:37,346 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 09:58:37,373 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-05 09:58:37,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [245656831] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 09:58:37,373 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 09:58:37,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-02-05 09:58:37,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283738514] [2025-02-05 09:58:37,374 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 09:58:37,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-05 09:58:37,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 09:58:37,374 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-05 09:58:37,375 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-02-05 09:58:37,375 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 09:58:37,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 09:58:37,427 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2025-02-05 09:58:37,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-05 09:58:37,428 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2025-02-05 09:58:37,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 09:58:37,428 INFO L225 Difference]: With dead ends: 36 [2025-02-05 09:58:37,428 INFO L226 Difference]: Without dead ends: 26 [2025-02-05 09:58:37,429 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-02-05 09:58:37,430 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 14 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 22 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 [2025-02-05 09:58:37,431 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 22 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 09:58:37,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2025-02-05 09:58:37,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2025-02-05 09:58:37,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.12) internal successors, (28), 25 states have internal predecessors, (28), 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) [2025-02-05 09:58:37,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2025-02-05 09:58:37,438 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 12 [2025-02-05 09:58:37,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 09:58:37,439 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2025-02-05 09:58:37,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 09:58:37,439 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2025-02-05 09:58:37,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-02-05 09:58:37,440 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 09:58:37,440 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 09:58:37,448 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-05 09:58:37,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 09:58:37,641 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 09:58:37,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 09:58:37,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1359361277, now seen corresponding path program 2 times [2025-02-05 09:58:37,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 09:58:37,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914027005] [2025-02-05 09:58:37,642 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 09:58:37,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 09:58:37,661 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 24 statements into 2 equivalence classes. [2025-02-05 09:58:37,694 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 24 of 24 statements. [2025-02-05 09:58:37,694 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 09:58:37,694 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:58:37,855 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-05 09:58:37,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 09:58:37,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914027005] [2025-02-05 09:58:37,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914027005] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 09:58:37,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127322092] [2025-02-05 09:58:37,856 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 09:58:37,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 09:58:37,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 09:58:37,859 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 09:58:37,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-05 09:58:37,912 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 24 statements into 2 equivalence classes. [2025-02-05 09:58:37,941 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 24 of 24 statements. [2025-02-05 09:58:37,941 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 09:58:37,941 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:58:37,943 INFO L256 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-05 09:58:37,944 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 09:58:37,971 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-05 09:58:37,971 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 09:58:38,037 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-05 09:58:38,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [127322092] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 09:58:38,037 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 09:58:38,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2025-02-05 09:58:38,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723305847] [2025-02-05 09:58:38,038 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 09:58:38,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-05 09:58:38,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 09:58:38,039 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-05 09:58:38,039 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-02-05 09:58:38,039 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 09:58:38,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 09:58:38,128 INFO L93 Difference]: Finished difference Result 69 states and 84 transitions. [2025-02-05 09:58:38,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-05 09:58:38,128 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2025-02-05 09:58:38,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 09:58:38,129 INFO L225 Difference]: With dead ends: 69 [2025-02-05 09:58:38,129 INFO L226 Difference]: Without dead ends: 50 [2025-02-05 09:58:38,129 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-02-05 09:58:38,130 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 56 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 09:58:38,130 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 28 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 09:58:38,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2025-02-05 09:58:38,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2025-02-05 09:58:38,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.0612244897959184) internal successors, (52), 49 states have internal predecessors, (52), 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) [2025-02-05 09:58:38,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 52 transitions. [2025-02-05 09:58:38,141 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 52 transitions. Word has length 24 [2025-02-05 09:58:38,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 09:58:38,141 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 52 transitions. [2025-02-05 09:58:38,142 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 09:58:38,142 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 52 transitions. [2025-02-05 09:58:38,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2025-02-05 09:58:38,143 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 09:58:38,143 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 09:58:38,150 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-05 09:58:38,343 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 09:58:38,344 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 09:58:38,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 09:58:38,344 INFO L85 PathProgramCache]: Analyzing trace with hash 438249693, now seen corresponding path program 3 times [2025-02-05 09:58:38,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 09:58:38,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603512431] [2025-02-05 09:58:38,344 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 09:58:38,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 09:58:38,371 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 48 statements into 11 equivalence classes. [2025-02-05 09:58:38,399 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 18 of 48 statements. [2025-02-05 09:58:38,402 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-02-05 09:58:38,403 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:58:38,814 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2025-02-05 09:58:38,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 09:58:38,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603512431] [2025-02-05 09:58:38,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603512431] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 09:58:38,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812860082] [2025-02-05 09:58:38,816 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 09:58:38,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 09:58:38,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 09:58:38,819 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 09:58:38,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-05 09:58:38,888 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 48 statements into 11 equivalence classes. [2025-02-05 09:58:38,911 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 18 of 48 statements. [2025-02-05 09:58:38,911 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-02-05 09:58:38,911 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:58:38,912 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-02-05 09:58:38,916 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 09:58:39,286 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2025-02-05 09:58:39,287 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 09:58:39,449 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-02-05 09:58:39,449 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 [2025-02-05 09:58:39,483 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2025-02-05 09:58:39,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [812860082] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 09:58:39,484 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 09:58:39,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 13 [2025-02-05 09:58:39,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527055227] [2025-02-05 09:58:39,484 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 09:58:39,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-05 09:58:39,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 09:58:39,485 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-05 09:58:39,485 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2025-02-05 09:58:39,485 INFO L87 Difference]: Start difference. First operand 50 states and 52 transitions. Second operand has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 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) [2025-02-05 09:58:39,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 09:58:39,586 INFO L93 Difference]: Finished difference Result 55 states and 57 transitions. [2025-02-05 09:58:39,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-05 09:58:39,586 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2025-02-05 09:58:39,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 09:58:39,587 INFO L225 Difference]: With dead ends: 55 [2025-02-05 09:58:39,587 INFO L226 Difference]: Without dead ends: 53 [2025-02-05 09:58:39,588 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2025-02-05 09:58:39,588 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 24 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 09:58:39,588 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 36 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 09:58:39,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2025-02-05 09:58:39,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2025-02-05 09:58:39,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.0588235294117647) internal successors, (54), 51 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) [2025-02-05 09:58:39,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 54 transitions. [2025-02-05 09:58:39,600 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 54 transitions. Word has length 48 [2025-02-05 09:58:39,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 09:58:39,601 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 54 transitions. [2025-02-05 09:58:39,601 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 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) [2025-02-05 09:58:39,601 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 54 transitions. [2025-02-05 09:58:39,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2025-02-05 09:58:39,603 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 09:58:39,603 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 09:58:39,610 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-05 09:58:39,807 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 09:58:39,807 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 09:58:39,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 09:58:39,808 INFO L85 PathProgramCache]: Analyzing trace with hash -803101873, now seen corresponding path program 1 times [2025-02-05 09:58:39,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 09:58:39,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838890689] [2025-02-05 09:58:39,808 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 09:58:39,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 09:58:39,827 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes. [2025-02-05 09:58:39,850 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements. [2025-02-05 09:58:39,850 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 09:58:39,850 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:58:40,086 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2025-02-05 09:58:40,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 09:58:40,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838890689] [2025-02-05 09:58:40,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838890689] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 09:58:40,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328442107] [2025-02-05 09:58:40,086 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 09:58:40,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 09:58:40,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 09:58:40,090 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 09:58:40,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-05 09:58:40,157 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes. [2025-02-05 09:58:40,198 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements. [2025-02-05 09:58:40,198 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 09:58:40,198 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:58:40,200 INFO L256 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-02-05 09:58:40,202 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 09:58:40,233 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2025-02-05 09:58:40,233 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 09:58:40,475 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2025-02-05 09:58:40,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1328442107] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 09:58:40,475 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 09:58:40,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2025-02-05 09:58:40,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077311592] [2025-02-05 09:58:40,475 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 09:58:40,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-02-05 09:58:40,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 09:58:40,476 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-02-05 09:58:40,476 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2025-02-05 09:58:40,477 INFO L87 Difference]: Start difference. First operand 52 states and 54 transitions. Second operand has 25 states, 25 states have (on average 1.48) internal successors, (37), 25 states have internal predecessors, (37), 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) [2025-02-05 09:58:40,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 09:58:40,632 INFO L93 Difference]: Finished difference Result 139 states and 166 transitions. [2025-02-05 09:58:40,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-02-05 09:58:40,633 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.48) internal successors, (37), 25 states have internal predecessors, (37), 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 51 [2025-02-05 09:58:40,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 09:58:40,634 INFO L225 Difference]: With dead ends: 139 [2025-02-05 09:58:40,634 INFO L226 Difference]: Without dead ends: 100 [2025-02-05 09:58:40,634 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2025-02-05 09:58:40,635 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 92 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 09:58:40,635 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 68 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 09:58:40,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2025-02-05 09:58:40,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2025-02-05 09:58:40,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.0303030303030303) internal successors, (102), 99 states have internal predecessors, (102), 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) [2025-02-05 09:58:40,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 102 transitions. [2025-02-05 09:58:40,650 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 102 transitions. Word has length 51 [2025-02-05 09:58:40,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 09:58:40,650 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 102 transitions. [2025-02-05 09:58:40,651 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.48) internal successors, (37), 25 states have internal predecessors, (37), 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) [2025-02-05 09:58:40,653 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 102 transitions. [2025-02-05 09:58:40,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2025-02-05 09:58:40,655 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 09:58:40,655 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 09:58:40,665 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 [2025-02-05 09:58:40,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 09:58:40,856 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 09:58:40,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 09:58:40,856 INFO L85 PathProgramCache]: Analyzing trace with hash 844000143, now seen corresponding path program 2 times [2025-02-05 09:58:40,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 09:58:40,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262356097] [2025-02-05 09:58:40,856 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 09:58:40,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 09:58:40,888 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 99 statements into 2 equivalence classes. [2025-02-05 09:58:40,920 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 99 of 99 statements. [2025-02-05 09:58:40,920 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 09:58:40,920 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:58:41,634 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 717 trivial. 0 not checked. [2025-02-05 09:58:41,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 09:58:41,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262356097] [2025-02-05 09:58:41,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262356097] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 09:58:41,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069315239] [2025-02-05 09:58:41,634 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 09:58:41,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 09:58:41,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 09:58:41,637 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 09:58:41,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-05 09:58:41,732 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 99 statements into 2 equivalence classes. [2025-02-05 09:58:41,813 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 99 of 99 statements. [2025-02-05 09:58:41,814 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 09:58:41,814 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:58:41,817 INFO L256 TraceCheckSpWp]: Trace formula consists of 602 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-02-05 09:58:41,821 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 09:58:41,873 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 717 trivial. 0 not checked. [2025-02-05 09:58:41,873 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 09:58:42,688 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 717 trivial. 0 not checked. [2025-02-05 09:58:42,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2069315239] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 09:58:42,689 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 09:58:42,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2025-02-05 09:58:42,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629825738] [2025-02-05 09:58:42,689 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 09:58:42,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2025-02-05 09:58:42,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 09:58:42,691 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2025-02-05 09:58:42,692 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2025-02-05 09:58:42,692 INFO L87 Difference]: Start difference. First operand 100 states and 102 transitions. Second operand has 49 states, 49 states have (on average 1.2448979591836735) internal successors, (61), 49 states have internal predecessors, (61), 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) [2025-02-05 09:58:43,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 09:58:43,090 INFO L93 Difference]: Finished difference Result 271 states and 322 transitions. [2025-02-05 09:58:43,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2025-02-05 09:58:43,091 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.2448979591836735) internal successors, (61), 49 states have internal predecessors, (61), 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 99 [2025-02-05 09:58:43,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 09:58:43,092 INFO L225 Difference]: With dead ends: 271 [2025-02-05 09:58:43,092 INFO L226 Difference]: Without dead ends: 196 [2025-02-05 09:58:43,094 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2025-02-05 09:58:43,094 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 252 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-05 09:58:43,095 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 105 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-05 09:58:43,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2025-02-05 09:58:43,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2025-02-05 09:58:43,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 195 states have (on average 1.0153846153846153) internal successors, (198), 195 states have internal predecessors, (198), 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) [2025-02-05 09:58:43,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 198 transitions. [2025-02-05 09:58:43,125 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 198 transitions. Word has length 99 [2025-02-05 09:58:43,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 09:58:43,126 INFO L471 AbstractCegarLoop]: Abstraction has 196 states and 198 transitions. [2025-02-05 09:58:43,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.2448979591836735) internal successors, (61), 49 states have internal predecessors, (61), 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) [2025-02-05 09:58:43,126 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 198 transitions. [2025-02-05 09:58:43,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2025-02-05 09:58:43,127 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 09:58:43,127 INFO L218 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 09:58:43,138 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-02-05 09:58:43,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2025-02-05 09:58:43,329 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 09:58:43,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 09:58:43,329 INFO L85 PathProgramCache]: Analyzing trace with hash -296543217, now seen corresponding path program 3 times [2025-02-05 09:58:43,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 09:58:43,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557369592] [2025-02-05 09:58:43,330 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 09:58:43,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 09:58:43,380 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 195 statements into 47 equivalence classes. [2025-02-05 09:58:43,436 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 36 of 195 statements. [2025-02-05 09:58:43,436 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-02-05 09:58:43,436 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:58:44,015 INFO L134 CoverageAnalysis]: Checked inductivity of 4234 backedges. 0 proven. 227 refuted. 0 times theorem prover too weak. 4007 trivial. 0 not checked. [2025-02-05 09:58:44,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 09:58:44,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557369592] [2025-02-05 09:58:44,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557369592] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 09:58:44,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538624236] [2025-02-05 09:58:44,016 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 09:58:44,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 09:58:44,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 09:58:44,019 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 09:58:44,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-05 09:58:44,192 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 195 statements into 47 equivalence classes. [2025-02-05 09:58:44,322 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 36 of 195 statements. [2025-02-05 09:58:44,322 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-02-05 09:58:44,322 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:58:44,324 INFO L256 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-02-05 09:58:44,336 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 09:58:45,379 INFO L134 CoverageAnalysis]: Checked inductivity of 4234 backedges. 0 proven. 227 refuted. 0 times theorem prover too weak. 4007 trivial. 0 not checked. [2025-02-05 09:58:45,379 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 09:58:45,695 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-02-05 09:58:45,695 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 [2025-02-05 09:58:45,725 INFO L134 CoverageAnalysis]: Checked inductivity of 4234 backedges. 44 proven. 183 refuted. 0 times theorem prover too weak. 4007 trivial. 0 not checked. [2025-02-05 09:58:45,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1538624236] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 09:58:45,726 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 09:58:45,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 24 [2025-02-05 09:58:45,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667712765] [2025-02-05 09:58:45,726 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 09:58:45,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-02-05 09:58:45,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 09:58:45,727 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-02-05 09:58:45,727 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2025-02-05 09:58:45,728 INFO L87 Difference]: Start difference. First operand 196 states and 198 transitions. Second operand has 24 states, 24 states have (on average 2.2916666666666665) internal successors, (55), 24 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 09:58:45,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 09:58:45,854 INFO L93 Difference]: Finished difference Result 202 states and 204 transitions. [2025-02-05 09:58:45,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-05 09:58:45,855 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.2916666666666665) internal successors, (55), 24 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 195 [2025-02-05 09:58:45,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 09:58:45,857 INFO L225 Difference]: With dead ends: 202 [2025-02-05 09:58:45,858 INFO L226 Difference]: Without dead ends: 200 [2025-02-05 09:58:45,858 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 375 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=131, Invalid=571, Unknown=0, NotChecked=0, Total=702 [2025-02-05 09:58:45,859 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 26 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 09:58:45,859 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 72 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 09:58:45,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2025-02-05 09:58:45,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 199. [2025-02-05 09:58:45,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 198 states have (on average 1.0151515151515151) internal successors, (201), 198 states have internal predecessors, (201), 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) [2025-02-05 09:58:45,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 201 transitions. [2025-02-05 09:58:45,878 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 201 transitions. Word has length 195 [2025-02-05 09:58:45,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 09:58:45,879 INFO L471 AbstractCegarLoop]: Abstraction has 199 states and 201 transitions. [2025-02-05 09:58:45,879 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.2916666666666665) internal successors, (55), 24 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 09:58:45,879 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 201 transitions. [2025-02-05 09:58:45,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2025-02-05 09:58:45,883 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 09:58:45,887 INFO L218 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 09:58:45,894 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-05 09:58:46,087 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 09:58:46,088 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 09:58:46,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 09:58:46,088 INFO L85 PathProgramCache]: Analyzing trace with hash 429624029, now seen corresponding path program 4 times [2025-02-05 09:58:46,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 09:58:46,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701858522] [2025-02-05 09:58:46,088 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 09:58:46,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 09:58:46,137 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 198 statements into 2 equivalence classes. [2025-02-05 09:58:46,185 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 198 of 198 statements. [2025-02-05 09:58:46,186 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-05 09:58:46,186 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:58:48,696 INFO L134 CoverageAnalysis]: Checked inductivity of 4239 backedges. 0 proven. 3151 refuted. 0 times theorem prover too weak. 1088 trivial. 0 not checked. [2025-02-05 09:58:48,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 09:58:48,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701858522] [2025-02-05 09:58:48,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701858522] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 09:58:48,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861119022] [2025-02-05 09:58:48,697 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 09:58:48,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 09:58:48,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 09:58:48,698 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 09:58:48,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-05 09:58:48,859 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 198 statements into 2 equivalence classes. [2025-02-05 09:58:48,983 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 198 of 198 statements. [2025-02-05 09:58:48,983 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-05 09:58:48,983 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:58:48,987 INFO L256 TraceCheckSpWp]: Trace formula consists of 1190 conjuncts, 48 conjuncts are in the unsatisfiable core [2025-02-05 09:58:48,991 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 09:58:49,175 INFO L134 CoverageAnalysis]: Checked inductivity of 4239 backedges. 0 proven. 3151 refuted. 0 times theorem prover too weak. 1088 trivial. 0 not checked. [2025-02-05 09:58:49,175 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 09:58:51,568 INFO L134 CoverageAnalysis]: Checked inductivity of 4239 backedges. 0 proven. 3151 refuted. 0 times theorem prover too weak. 1088 trivial. 0 not checked. [2025-02-05 09:58:51,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [861119022] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 09:58:51,568 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 09:58:51,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 96 [2025-02-05 09:58:51,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645347899] [2025-02-05 09:58:51,569 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 09:58:51,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2025-02-05 09:58:51,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 09:58:51,572 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2025-02-05 09:58:51,576 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2025-02-05 09:58:51,576 INFO L87 Difference]: Start difference. First operand 199 states and 201 transitions. Second operand has 96 states, 96 states have (on average 3.0104166666666665) internal successors, (289), 96 states have internal predecessors, (289), 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) [2025-02-05 09:58:52,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 09:58:52,279 INFO L93 Difference]: Finished difference Result 541 states and 640 transitions. [2025-02-05 09:58:52,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2025-02-05 09:58:52,279 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 3.0104166666666665) internal successors, (289), 96 states have internal predecessors, (289), 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 198 [2025-02-05 09:58:52,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 09:58:52,281 INFO L225 Difference]: With dead ends: 541 [2025-02-05 09:58:52,281 INFO L226 Difference]: Without dead ends: 391 [2025-02-05 09:58:52,283 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 443 GetRequests, 349 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2025-02-05 09:58:52,284 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 413 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 413 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-05 09:58:52,284 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 167 Invalid, 706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [413 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-05 09:58:52,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2025-02-05 09:58:52,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 391. [2025-02-05 09:58:52,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 1.0076923076923077) internal successors, (393), 390 states have internal predecessors, (393), 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) [2025-02-05 09:58:52,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 393 transitions. [2025-02-05 09:58:52,322 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 393 transitions. Word has length 198 [2025-02-05 09:58:52,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 09:58:52,322 INFO L471 AbstractCegarLoop]: Abstraction has 391 states and 393 transitions. [2025-02-05 09:58:52,326 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 3.0104166666666665) internal successors, (289), 96 states have internal predecessors, (289), 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) [2025-02-05 09:58:52,327 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 393 transitions. [2025-02-05 09:58:52,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2025-02-05 09:58:52,331 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 09:58:52,331 INFO L218 NwaCegarLoop]: trace histogram [94, 94, 94, 94, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 09:58:52,341 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-02-05 09:58:52,532 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 09:58:52,532 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 09:58:52,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 09:58:52,533 INFO L85 PathProgramCache]: Analyzing trace with hash 609094109, now seen corresponding path program 5 times [2025-02-05 09:58:52,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 09:58:52,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309521336] [2025-02-05 09:58:52,533 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 09:58:52,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 09:58:52,615 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 390 statements into 95 equivalence classes. [2025-02-05 09:58:58,380 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 95 check-sat command(s) and asserted 390 of 390 statements. [2025-02-05 09:58:58,380 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 95 check-sat command(s) [2025-02-05 09:58:58,380 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:59:04,673 INFO L134 CoverageAnalysis]: Checked inductivity of 17679 backedges. 0 proven. 13207 refuted. 0 times theorem prover too weak. 4472 trivial. 0 not checked. [2025-02-05 09:59:04,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 09:59:04,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309521336] [2025-02-05 09:59:04,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309521336] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 09:59:04,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1176457910] [2025-02-05 09:59:04,674 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 09:59:04,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 09:59:04,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 09:59:04,676 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 09:59:04,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-02-05 09:59:04,952 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 390 statements into 95 equivalence classes.