./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound2.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bda512f5ab4e84c08e80fd02a1c07c8fba5ca60aa45d55edfde2cc268dd1288e --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 03:19:23,650 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 03:19:23,696 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-09 03:19:23,701 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 03:19:23,702 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 03:19:23,716 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 03:19:23,717 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 03:19:23,717 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 03:19:23,717 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 03:19:23,717 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 03:19:23,717 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 03:19:23,717 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 03:19:23,718 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 03:19:23,718 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 03:19:23,718 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 03:19:23,718 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 03:19:23,718 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 03:19:23,718 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 03:19:23,718 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 03:19:23,718 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 03:19:23,718 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 03:19:23,718 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 03:19:23,719 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 03:19:23,719 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 03:19:23,719 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 03:19:23,719 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 03:19:23,719 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 03:19:23,719 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 03:19:23,719 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 03:19:23,719 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 03:19:23,719 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 03:19:23,719 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 03:19:23,719 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 03:19:23,720 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 03:19:23,720 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 03:19:23,720 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 03:19:23,720 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 03:19:23,720 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 03:19:23,720 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 03:19:23,720 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 03:19:23,720 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 03:19:23,720 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 03:19:23,720 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 03:19:23,720 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 03:19:23,720 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 03:19:23,721 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 03:19:23,721 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 03:19:23,721 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 03:19:23,721 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 -> bda512f5ab4e84c08e80fd02a1c07c8fba5ca60aa45d55edfde2cc268dd1288e [2025-01-09 03:19:23,966 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 03:19:23,974 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 03:19:23,976 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 03:19:23,976 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 03:19:23,977 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 03:19:23,977 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound2.c [2025-01-09 03:19:25,149 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/82b4e9a74/f0c273bd6f204963ad4b889b733b487c/FLAG759c1347a [2025-01-09 03:19:25,388 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 03:19:25,389 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound2.c [2025-01-09 03:19:25,408 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/82b4e9a74/f0c273bd6f204963ad4b889b733b487c/FLAG759c1347a [2025-01-09 03:19:25,727 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/82b4e9a74/f0c273bd6f204963ad4b889b733b487c [2025-01-09 03:19:25,732 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 03:19:25,733 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 03:19:25,733 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 03:19:25,734 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 03:19:25,741 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 03:19:25,742 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 03:19:25" (1/1) ... [2025-01-09 03:19:25,742 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ea24f20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:19:25, skipping insertion in model container [2025-01-09 03:19:25,743 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 03:19:25" (1/1) ... [2025-01-09 03:19:25,754 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 03:19:25,857 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/nla-digbench-scaling/egcd3-ll_valuebound2.c[490,503] [2025-01-09 03:19:25,881 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 03:19:25,893 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 03:19:25,902 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/nla-digbench-scaling/egcd3-ll_valuebound2.c[490,503] [2025-01-09 03:19:25,912 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 03:19:25,921 INFO L204 MainTranslator]: Completed translation [2025-01-09 03:19:25,923 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:19:25 WrapperNode [2025-01-09 03:19:25,923 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 03:19:25,925 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 03:19:25,925 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 03:19:25,925 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 03:19:25,929 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:19:25" (1/1) ... [2025-01-09 03:19:25,935 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:19:25" (1/1) ... [2025-01-09 03:19:25,946 INFO L138 Inliner]: procedures = 14, calls = 16, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 74 [2025-01-09 03:19:25,947 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 03:19:25,947 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 03:19:25,947 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 03:19:25,948 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 03:19:25,953 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:19:25" (1/1) ... [2025-01-09 03:19:25,954 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:19:25" (1/1) ... [2025-01-09 03:19:25,958 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:19:25" (1/1) ... [2025-01-09 03:19:25,967 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-01-09 03:19:25,967 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:19:25" (1/1) ... [2025-01-09 03:19:25,967 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:19:25" (1/1) ... [2025-01-09 03:19:25,969 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:19:25" (1/1) ... [2025-01-09 03:19:25,970 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:19:25" (1/1) ... [2025-01-09 03:19:25,972 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:19:25" (1/1) ... [2025-01-09 03:19:25,973 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:19:25" (1/1) ... [2025-01-09 03:19:25,974 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:19:25" (1/1) ... [2025-01-09 03:19:25,975 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 03:19:25,976 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 03:19:25,976 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 03:19:25,976 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 03:19:25,977 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:19:25" (1/1) ... [2025-01-09 03:19:25,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 03:19:25,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:19:26,004 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-09 03:19:26,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-09 03:19:26,023 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 03:19:26,023 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-01-09 03:19:26,023 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-01-09 03:19:26,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 03:19:26,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 03:19:26,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 03:19:26,023 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-01-09 03:19:26,023 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-01-09 03:19:26,069 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 03:19:26,070 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 03:19:26,191 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2025-01-09 03:19:26,192 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 03:19:26,198 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 03:19:26,198 INFO L312 CfgBuilder]: Removed 3 assume(true) statements. [2025-01-09 03:19:26,198 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 03:19:26 BoogieIcfgContainer [2025-01-09 03:19:26,198 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 03:19:26,200 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 03:19:26,200 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 03:19:26,203 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 03:19:26,203 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 03:19:25" (1/3) ... [2025-01-09 03:19:26,204 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@359f59e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 03:19:26, skipping insertion in model container [2025-01-09 03:19:26,204 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:19:25" (2/3) ... [2025-01-09 03:19:26,205 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@359f59e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 03:19:26, skipping insertion in model container [2025-01-09 03:19:26,205 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 03:19:26" (3/3) ... [2025-01-09 03:19:26,205 INFO L128 eAbstractionObserver]: Analyzing ICFG egcd3-ll_valuebound2.c [2025-01-09 03:19:26,216 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 03:19:26,217 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG egcd3-ll_valuebound2.c that has 3 procedures, 32 locations, 1 initial locations, 3 loop locations, and 1 error locations. [2025-01-09 03:19:26,254 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 03:19:26,263 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;@5723f73e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 03:19:26,264 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-09 03:19:26,267 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 20 states have (on average 1.4) internal successors, (28), 20 states have internal predecessors, (28), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-01-09 03:19:26,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-01-09 03:19:26,272 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:19:26,272 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:19:26,273 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:19:26,277 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:19:26,277 INFO L85 PathProgramCache]: Analyzing trace with hash 903646462, now seen corresponding path program 1 times [2025-01-09 03:19:26,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:19:26,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737201654] [2025-01-09 03:19:26,284 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:19:26,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:19:26,333 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-01-09 03:19:26,343 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-01-09 03:19:26,343 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:19:26,343 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:19:26,384 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-01-09 03:19:26,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:19:26,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737201654] [2025-01-09 03:19:26,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737201654] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:19:26,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709902660] [2025-01-09 03:19:26,385 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:19:26,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:19:26,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:19:26,393 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:19:26,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-01-09 03:19:26,449 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-01-09 03:19:26,474 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-01-09 03:19:26,475 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:19:26,477 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:19:26,478 INFO L256 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-01-09 03:19:26,481 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:19:26,492 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-01-09 03:19:26,492 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 03:19:26,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1709902660] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:19:26,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 03:19:26,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-01-09 03:19:26,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071085623] [2025-01-09 03:19:26,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:19:26,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-01-09 03:19:26,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:19:26,514 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-01-09 03:19:26,514 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 03:19:26,515 INFO L87 Difference]: Start difference. First operand has 32 states, 20 states have (on average 1.4) internal successors, (28), 20 states have internal predecessors, (28), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2025-01-09 03:19:26,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:19:26,531 INFO L93 Difference]: Finished difference Result 61 states and 97 transitions. [2025-01-09 03:19:26,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-09 03:19:26,535 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 29 [2025-01-09 03:19:26,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:19:26,539 INFO L225 Difference]: With dead ends: 61 [2025-01-09 03:19:26,539 INFO L226 Difference]: Without dead ends: 28 [2025-01-09 03:19:26,541 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 03:19:26,544 INFO L435 NwaCegarLoop]: 41 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:19:26,545 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:19:26,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2025-01-09 03:19:26,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2025-01-09 03:19:26,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2025-01-09 03:19:26,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 37 transitions. [2025-01-09 03:19:26,571 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 37 transitions. Word has length 29 [2025-01-09 03:19:26,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:19:26,571 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 37 transitions. [2025-01-09 03:19:26,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2025-01-09 03:19:26,572 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 37 transitions. [2025-01-09 03:19:26,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-01-09 03:19:26,573 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:19:26,573 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:19:26,579 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-01-09 03:19:26,773 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-01-09 03:19:26,774 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:19:26,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:19:26,774 INFO L85 PathProgramCache]: Analyzing trace with hash -975807550, now seen corresponding path program 1 times [2025-01-09 03:19:26,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:19:26,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066011947] [2025-01-09 03:19:26,775 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:19:26,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:19:26,783 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-01-09 03:19:26,804 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-01-09 03:19:26,805 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:19:26,805 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:19:26,961 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-01-09 03:19:26,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:19:26,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066011947] [2025-01-09 03:19:26,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066011947] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:19:26,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 03:19:26,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-09 03:19:26,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265821985] [2025-01-09 03:19:26,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:19:26,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 03:19:26,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:19:26,963 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 03:19:26,963 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-01-09 03:19:26,963 INFO L87 Difference]: Start difference. First operand 28 states and 37 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2025-01-09 03:19:27,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:19:27,039 INFO L93 Difference]: Finished difference Result 44 states and 59 transitions. [2025-01-09 03:19:27,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 03:19:27,040 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 29 [2025-01-09 03:19:27,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:19:27,040 INFO L225 Difference]: With dead ends: 44 [2025-01-09 03:19:27,040 INFO L226 Difference]: Without dead ends: 37 [2025-01-09 03:19:27,041 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-01-09 03:19:27,041 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 21 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 03:19:27,041 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 90 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 03:19:27,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2025-01-09 03:19:27,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 29. [2025-01-09 03:19:27,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2025-01-09 03:19:27,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 38 transitions. [2025-01-09 03:19:27,054 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 38 transitions. Word has length 29 [2025-01-09 03:19:27,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:19:27,055 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 38 transitions. [2025-01-09 03:19:27,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2025-01-09 03:19:27,055 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 38 transitions. [2025-01-09 03:19:27,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2025-01-09 03:19:27,057 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:19:27,057 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:19:27,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-09 03:19:27,057 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:19:27,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:19:27,057 INFO L85 PathProgramCache]: Analyzing trace with hash -186546870, now seen corresponding path program 1 times [2025-01-09 03:19:27,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:19:27,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945397743] [2025-01-09 03:19:27,058 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:19:27,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:19:27,065 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-01-09 03:19:27,073 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-01-09 03:19:27,073 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:19:27,073 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-09 03:19:27,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1458446345] [2025-01-09 03:19:27,075 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:19:27,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:19:27,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:19:27,077 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:19:27,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-01-09 03:19:27,114 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-01-09 03:19:27,158 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-01-09 03:19:27,158 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:19:27,158 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:19:27,161 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-01-09 03:19:27,163 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:19:27,235 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-01-09 03:19:27,235 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 03:19:27,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:19:27,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945397743] [2025-01-09 03:19:27,236 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-09 03:19:27,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1458446345] [2025-01-09 03:19:27,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1458446345] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:19:27,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 03:19:27,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 03:19:27,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890563148] [2025-01-09 03:19:27,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:19:27,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 03:19:27,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:19:27,238 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 03:19:27,238 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 03:19:27,238 INFO L87 Difference]: Start difference. First operand 29 states and 38 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2025-01-09 03:19:27,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:19:27,284 INFO L93 Difference]: Finished difference Result 43 states and 57 transitions. [2025-01-09 03:19:27,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 03:19:27,284 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 30 [2025-01-09 03:19:27,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:19:27,285 INFO L225 Difference]: With dead ends: 43 [2025-01-09 03:19:27,285 INFO L226 Difference]: Without dead ends: 41 [2025-01-09 03:19:27,285 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-01-09 03:19:27,286 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 7 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:19:27,286 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 128 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:19:27,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2025-01-09 03:19:27,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2025-01-09 03:19:27,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 24 states have internal predecessors, (29), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2025-01-09 03:19:27,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 54 transitions. [2025-01-09 03:19:27,297 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 54 transitions. Word has length 30 [2025-01-09 03:19:27,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:19:27,297 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 54 transitions. [2025-01-09 03:19:27,297 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2025-01-09 03:19:27,298 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 54 transitions. [2025-01-09 03:19:27,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2025-01-09 03:19:27,298 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:19:27,298 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:19:27,305 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-01-09 03:19:27,503 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 [2025-01-09 03:19:27,503 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:19:27,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:19:27,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1731265694, now seen corresponding path program 1 times [2025-01-09 03:19:27,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:19:27,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950643324] [2025-01-09 03:19:27,505 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:19:27,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:19:27,509 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-01-09 03:19:27,516 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-01-09 03:19:27,516 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:19:27,516 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:19:27,618 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-01-09 03:19:27,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:19:27,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950643324] [2025-01-09 03:19:27,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950643324] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:19:27,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1077311592] [2025-01-09 03:19:27,619 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:19:27,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:19:27,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:19:27,621 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:19:27,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-01-09 03:19:27,647 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-01-09 03:19:27,658 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-01-09 03:19:27,658 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:19:27,659 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:19:27,659 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-01-09 03:19:27,660 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:19:27,702 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-01-09 03:19:27,702 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:19:27,813 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-01-09 03:19:27,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1077311592] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:19:27,813 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:19:27,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 12 [2025-01-09 03:19:27,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822550223] [2025-01-09 03:19:27,813 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:19:27,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-01-09 03:19:27,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:19:27,814 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-01-09 03:19:27,814 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2025-01-09 03:19:27,814 INFO L87 Difference]: Start difference. First operand 40 states and 54 transitions. Second operand has 12 states, 12 states have (on average 2.0) internal successors, (24), 11 states have internal predecessors, (24), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-01-09 03:19:27,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:19:27,957 INFO L93 Difference]: Finished difference Result 82 states and 122 transitions. [2025-01-09 03:19:27,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 03:19:27,958 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 11 states have internal predecessors, (24), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 32 [2025-01-09 03:19:27,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:19:27,959 INFO L225 Difference]: With dead ends: 82 [2025-01-09 03:19:27,959 INFO L226 Difference]: Without dead ends: 75 [2025-01-09 03:19:27,960 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 56 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2025-01-09 03:19:27,960 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 67 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 03:19:27,960 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 166 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 03:19:27,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2025-01-09 03:19:27,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 54. [2025-01-09 03:19:27,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 33 states have (on average 1.3636363636363635) internal successors, (45), 34 states have internal predecessors, (45), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2025-01-09 03:19:27,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 78 transitions. [2025-01-09 03:19:27,976 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 78 transitions. Word has length 32 [2025-01-09 03:19:27,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:19:27,976 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 78 transitions. [2025-01-09 03:19:27,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 11 states have internal predecessors, (24), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-01-09 03:19:27,976 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 78 transitions. [2025-01-09 03:19:27,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2025-01-09 03:19:27,977 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:19:27,977 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:19:27,983 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-01-09 03:19:28,181 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 [2025-01-09 03:19:28,182 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:19:28,182 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:19:28,182 INFO L85 PathProgramCache]: Analyzing trace with hash -2130912854, now seen corresponding path program 1 times [2025-01-09 03:19:28,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:19:28,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209914347] [2025-01-09 03:19:28,183 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:19:28,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:19:28,191 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-01-09 03:19:28,207 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-01-09 03:19:28,207 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:19:28,207 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-09 03:19:28,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2079619323] [2025-01-09 03:19:28,208 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:19:28,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:19:28,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:19:28,214 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:19:28,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-01-09 03:19:28,240 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-01-09 03:19:28,252 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-01-09 03:19:28,253 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:19:28,253 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:19:28,253 INFO L256 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-01-09 03:19:28,255 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:19:28,344 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-01-09 03:19:28,345 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:19:28,447 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-01-09 03:19:28,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:19:28,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209914347] [2025-01-09 03:19:28,448 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-09 03:19:28,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2079619323] [2025-01-09 03:19:28,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2079619323] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:19:28,448 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-09 03:19:28,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2025-01-09 03:19:28,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125141333] [2025-01-09 03:19:28,449 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-09 03:19:28,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-01-09 03:19:28,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:19:28,450 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-01-09 03:19:28,450 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-01-09 03:19:28,450 INFO L87 Difference]: Start difference. First operand 54 states and 78 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2025-01-09 03:19:28,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:19:28,546 INFO L93 Difference]: Finished difference Result 83 states and 120 transitions. [2025-01-09 03:19:28,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 03:19:28,546 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 33 [2025-01-09 03:19:28,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:19:28,547 INFO L225 Difference]: With dead ends: 83 [2025-01-09 03:19:28,548 INFO L226 Difference]: Without dead ends: 81 [2025-01-09 03:19:28,548 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 56 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2025-01-09 03:19:28,549 INFO L435 NwaCegarLoop]: 51 mSDtfsCounter, 16 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 03:19:28,549 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 246 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 03:19:28,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2025-01-09 03:19:28,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 77. [2025-01-09 03:19:28,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 47 states have (on average 1.3829787234042554) internal successors, (65), 48 states have internal predecessors, (65), 25 states have call successors, (25), 4 states have call predecessors, (25), 4 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2025-01-09 03:19:28,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 114 transitions. [2025-01-09 03:19:28,569 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 114 transitions. Word has length 33 [2025-01-09 03:19:28,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:19:28,569 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 114 transitions. [2025-01-09 03:19:28,569 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2025-01-09 03:19:28,569 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 114 transitions. [2025-01-09 03:19:28,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2025-01-09 03:19:28,570 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:19:28,570 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:19:28,580 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-01-09 03:19:28,770 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 [2025-01-09 03:19:28,771 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:19:28,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:19:28,772 INFO L85 PathProgramCache]: Analyzing trace with hash -514021046, now seen corresponding path program 2 times [2025-01-09 03:19:28,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:19:28,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449417389] [2025-01-09 03:19:28,772 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 03:19:28,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:19:28,778 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 36 statements into 2 equivalence classes. [2025-01-09 03:19:28,790 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 36 of 36 statements. [2025-01-09 03:19:28,790 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 03:19:28,790 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:19:28,883 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-01-09 03:19:28,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:19:28,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449417389] [2025-01-09 03:19:28,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449417389] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:19:28,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636746568] [2025-01-09 03:19:28,883 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 03:19:28,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:19:28,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:19:28,885 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:19:28,886 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-01-09 03:19:28,905 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 36 statements into 2 equivalence classes. [2025-01-09 03:19:28,918 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 36 of 36 statements. [2025-01-09 03:19:28,918 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 03:19:28,918 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:19:28,918 INFO L256 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-01-09 03:19:28,919 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:19:28,942 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-01-09 03:19:28,942 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 03:19:28,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1636746568] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:19:28,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 03:19:28,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2025-01-09 03:19:28,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490528469] [2025-01-09 03:19:28,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:19:28,943 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 03:19:28,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:19:28,943 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 03:19:28,943 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2025-01-09 03:19:28,943 INFO L87 Difference]: Start difference. First operand 77 states and 114 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2025-01-09 03:19:29,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:19:29,007 INFO L93 Difference]: Finished difference Result 116 states and 178 transitions. [2025-01-09 03:19:29,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 03:19:29,007 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 36 [2025-01-09 03:19:29,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:19:29,008 INFO L225 Difference]: With dead ends: 116 [2025-01-09 03:19:29,008 INFO L226 Difference]: Without dead ends: 87 [2025-01-09 03:19:29,008 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2025-01-09 03:19:29,009 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 13 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:19:29,009 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 122 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:19:29,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2025-01-09 03:19:29,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 58. [2025-01-09 03:19:29,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 36 states have (on average 1.2777777777777777) internal successors, (46), 37 states have internal predecessors, (46), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2025-01-09 03:19:29,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 79 transitions. [2025-01-09 03:19:29,022 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 79 transitions. Word has length 36 [2025-01-09 03:19:29,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:19:29,022 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 79 transitions. [2025-01-09 03:19:29,022 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2025-01-09 03:19:29,022 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 79 transitions. [2025-01-09 03:19:29,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-01-09 03:19:29,023 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:19:29,023 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:19:29,029 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-01-09 03:19:29,223 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 [2025-01-09 03:19:29,224 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:19:29,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:19:29,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1071490868, now seen corresponding path program 1 times [2025-01-09 03:19:29,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:19:29,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861119022] [2025-01-09 03:19:29,224 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:19:29,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:19:29,228 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-01-09 03:19:29,235 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-01-09 03:19:29,235 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:19:29,235 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-09 03:19:29,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1645347899] [2025-01-09 03:19:29,236 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:19:29,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:19:29,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:19:29,238 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:19:29,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-01-09 03:19:29,276 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-01-09 03:19:29,314 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-01-09 03:19:29,315 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:19:29,315 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:19:29,319 INFO L256 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-01-09 03:19:29,320 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:19:29,415 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-01-09 03:19:29,415 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:19:29,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:19:29,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861119022] [2025-01-09 03:19:29,460 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-09 03:19:29,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645347899] [2025-01-09 03:19:29,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1645347899] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:19:29,461 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-01-09 03:19:29,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2025-01-09 03:19:29,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182367783] [2025-01-09 03:19:29,461 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-01-09 03:19:29,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-09 03:19:29,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:19:29,462 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-09 03:19:29,462 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-01-09 03:19:29,463 INFO L87 Difference]: Start difference. First operand 58 states and 79 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-09 03:19:29,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:19:29,597 INFO L93 Difference]: Finished difference Result 79 states and 110 transitions. [2025-01-09 03:19:29,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-09 03:19:29,599 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 38 [2025-01-09 03:19:29,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:19:29,600 INFO L225 Difference]: With dead ends: 79 [2025-01-09 03:19:29,600 INFO L226 Difference]: Without dead ends: 77 [2025-01-09 03:19:29,600 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2025-01-09 03:19:29,601 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 21 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 03:19:29,602 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 179 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 03:19:29,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2025-01-09 03:19:29,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 75. [2025-01-09 03:19:29,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 44 states have (on average 1.2954545454545454) internal successors, (57), 45 states have internal predecessors, (57), 25 states have call successors, (25), 5 states have call predecessors, (25), 5 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2025-01-09 03:19:29,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 106 transitions. [2025-01-09 03:19:29,624 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 106 transitions. Word has length 38 [2025-01-09 03:19:29,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:19:29,624 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 106 transitions. [2025-01-09 03:19:29,624 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-09 03:19:29,624 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 106 transitions. [2025-01-09 03:19:29,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2025-01-09 03:19:29,625 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:19:29,625 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:19:29,631 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-01-09 03:19:29,829 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 [2025-01-09 03:19:29,829 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:19:29,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:19:29,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1978738774, now seen corresponding path program 1 times [2025-01-09 03:19:29,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:19:29,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505173165] [2025-01-09 03:19:29,832 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:19:29,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:19:29,836 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 43 statements into 1 equivalence classes. [2025-01-09 03:19:29,845 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 43 of 43 statements. [2025-01-09 03:19:29,845 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:19:29,845 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-09 03:19:29,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1582286815] [2025-01-09 03:19:29,846 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:19:29,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:19:29,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:19:29,848 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:19:29,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-01-09 03:19:29,874 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 43 statements into 1 equivalence classes. [2025-01-09 03:19:29,885 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 43 of 43 statements. [2025-01-09 03:19:29,885 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:19:29,885 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:19:29,886 INFO L256 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-01-09 03:19:29,887 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:19:29,921 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2025-01-09 03:19:29,922 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 03:19:29,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:19:29,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505173165] [2025-01-09 03:19:29,922 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-09 03:19:29,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1582286815] [2025-01-09 03:19:29,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1582286815] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:19:29,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 03:19:29,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 03:19:29,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820145651] [2025-01-09 03:19:29,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:19:29,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 03:19:29,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:19:29,923 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 03:19:29,923 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 03:19:29,923 INFO L87 Difference]: Start difference. First operand 75 states and 106 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2025-01-09 03:19:29,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:19:29,966 INFO L93 Difference]: Finished difference Result 104 states and 148 transitions. [2025-01-09 03:19:29,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 03:19:29,967 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 43 [2025-01-09 03:19:29,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:19:29,968 INFO L225 Difference]: With dead ends: 104 [2025-01-09 03:19:29,968 INFO L226 Difference]: Without dead ends: 102 [2025-01-09 03:19:29,968 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-01-09 03:19:29,969 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 6 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:19:29,969 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 112 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:19:29,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2025-01-09 03:19:29,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 98. [2025-01-09 03:19:29,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 53 states have (on average 1.3018867924528301) internal successors, (69), 54 states have internal predecessors, (69), 37 states have call successors, (37), 7 states have call predecessors, (37), 7 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2025-01-09 03:19:29,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 142 transitions. [2025-01-09 03:19:29,989 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 142 transitions. Word has length 43 [2025-01-09 03:19:29,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:19:29,989 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 142 transitions. [2025-01-09 03:19:29,989 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2025-01-09 03:19:29,989 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 142 transitions. [2025-01-09 03:19:29,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2025-01-09 03:19:29,989 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:19:29,990 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:19:29,996 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-01-09 03:19:30,190 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 [2025-01-09 03:19:30,190 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:19:30,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:19:30,191 INFO L85 PathProgramCache]: Analyzing trace with hash -628147948, now seen corresponding path program 1 times [2025-01-09 03:19:30,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:19:30,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951603592] [2025-01-09 03:19:30,191 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:19:30,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:19:30,195 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-01-09 03:19:30,204 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-01-09 03:19:30,205 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:19:30,205 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-09 03:19:30,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [759027231] [2025-01-09 03:19:30,209 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:19:30,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:19:30,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:19:30,211 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:19:30,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-01-09 03:19:30,236 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-01-09 03:19:30,259 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-01-09 03:19:30,259 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:19:30,259 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:19:30,261 INFO L256 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-01-09 03:19:30,262 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:19:30,293 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-01-09 03:19:30,293 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 03:19:30,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:19:30,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951603592] [2025-01-09 03:19:30,293 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-09 03:19:30,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [759027231] [2025-01-09 03:19:30,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [759027231] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:19:30,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 03:19:30,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 03:19:30,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526938427] [2025-01-09 03:19:30,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:19:30,294 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 03:19:30,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:19:30,296 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 03:19:30,296 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 03:19:30,296 INFO L87 Difference]: Start difference. First operand 98 states and 142 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-01-09 03:19:30,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:19:30,344 INFO L93 Difference]: Finished difference Result 148 states and 231 transitions. [2025-01-09 03:19:30,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 03:19:30,344 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 45 [2025-01-09 03:19:30,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:19:30,345 INFO L225 Difference]: With dead ends: 148 [2025-01-09 03:19:30,345 INFO L226 Difference]: Without dead ends: 146 [2025-01-09 03:19:30,345 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-01-09 03:19:30,346 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 4 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:19:30,346 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 120 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:19:30,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2025-01-09 03:19:30,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 134. [2025-01-09 03:19:30,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 56 states have (on average 1.2857142857142858) internal successors, (72), 65 states have internal predecessors, (72), 69 states have call successors, (69), 8 states have call predecessors, (69), 8 states have return successors, (68), 60 states have call predecessors, (68), 68 states have call successors, (68) [2025-01-09 03:19:30,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 209 transitions. [2025-01-09 03:19:30,373 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 209 transitions. Word has length 45 [2025-01-09 03:19:30,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:19:30,373 INFO L471 AbstractCegarLoop]: Abstraction has 134 states and 209 transitions. [2025-01-09 03:19:30,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-01-09 03:19:30,373 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 209 transitions. [2025-01-09 03:19:30,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2025-01-09 03:19:30,376 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:19:30,376 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:19:30,382 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-01-09 03:19:30,581 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 [2025-01-09 03:19:30,581 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:19:30,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:19:30,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1720621866, now seen corresponding path program 1 times [2025-01-09 03:19:30,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:19:30,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661786286] [2025-01-09 03:19:30,582 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:19:30,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:19:30,586 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 55 statements into 1 equivalence classes. [2025-01-09 03:19:30,596 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 55 of 55 statements. [2025-01-09 03:19:30,599 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:19:30,599 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-09 03:19:30,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1549252414] [2025-01-09 03:19:30,600 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:19:30,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:19:30,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:19:30,604 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:19:30,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-01-09 03:19:30,631 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 55 statements into 1 equivalence classes. [2025-01-09 03:19:30,647 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 55 of 55 statements. [2025-01-09 03:19:30,648 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:19:30,648 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:19:30,649 INFO L256 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 51 conjuncts are in the unsatisfiable core [2025-01-09 03:19:30,650 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:19:31,125 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 14 proven. 5 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2025-01-09 03:19:31,126 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:19:31,474 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2025-01-09 03:19:31,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:19:31,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661786286] [2025-01-09 03:19:31,474 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-09 03:19:31,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1549252414] [2025-01-09 03:19:31,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1549252414] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:19:31,474 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-09 03:19:31,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 23 [2025-01-09 03:19:31,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096779133] [2025-01-09 03:19:31,475 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-09 03:19:31,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-01-09 03:19:31,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:19:31,475 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-01-09 03:19:31,476 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=429, Unknown=0, NotChecked=0, Total=506 [2025-01-09 03:19:31,476 INFO L87 Difference]: Start difference. First operand 134 states and 209 transitions. Second operand has 23 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 20 states have internal predecessors, (33), 6 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2025-01-09 03:19:33,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:19:33,752 INFO L93 Difference]: Finished difference Result 358 states and 580 transitions. [2025-01-09 03:19:33,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2025-01-09 03:19:33,753 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 20 states have internal predecessors, (33), 6 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) Word has length 55 [2025-01-09 03:19:33,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:19:33,758 INFO L225 Difference]: With dead ends: 358 [2025-01-09 03:19:33,759 INFO L226 Difference]: Without dead ends: 276 [2025-01-09 03:19:33,761 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 431 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=398, Invalid=1672, Unknown=0, NotChecked=0, Total=2070 [2025-01-09 03:19:33,764 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 107 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-01-09 03:19:33,764 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 288 Invalid, 732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 614 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-01-09 03:19:33,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2025-01-09 03:19:33,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 204. [2025-01-09 03:19:33,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 99 states have (on average 1.3131313131313131) internal successors, (130), 106 states have internal predecessors, (130), 93 states have call successors, (93), 11 states have call predecessors, (93), 11 states have return successors, (92), 86 states have call predecessors, (92), 92 states have call successors, (92) [2025-01-09 03:19:33,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 315 transitions. [2025-01-09 03:19:33,844 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 315 transitions. Word has length 55 [2025-01-09 03:19:33,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:19:33,845 INFO L471 AbstractCegarLoop]: Abstraction has 204 states and 315 transitions. [2025-01-09 03:19:33,845 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 20 states have internal predecessors, (33), 6 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2025-01-09 03:19:33,845 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 315 transitions. [2025-01-09 03:19:33,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2025-01-09 03:19:33,847 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:19:33,847 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:19:33,859 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-01-09 03:19:34,052 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:19:34,052 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:19:34,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:19:34,053 INFO L85 PathProgramCache]: Analyzing trace with hash -51889386, now seen corresponding path program 1 times [2025-01-09 03:19:34,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:19:34,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999205990] [2025-01-09 03:19:34,054 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:19:34,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:19:34,057 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 59 statements into 1 equivalence classes. [2025-01-09 03:19:34,072 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 59 of 59 statements. [2025-01-09 03:19:34,075 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:19:34,075 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:19:34,301 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 19 proven. 8 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2025-01-09 03:19:34,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:19:34,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999205990] [2025-01-09 03:19:34,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999205990] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:19:34,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194066337] [2025-01-09 03:19:34,302 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:19:34,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:19:34,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:19:34,304 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:19:34,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-01-09 03:19:34,325 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 59 statements into 1 equivalence classes. [2025-01-09 03:19:34,338 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 59 of 59 statements. [2025-01-09 03:19:34,338 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:19:34,338 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:19:34,339 INFO L256 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-01-09 03:19:34,340 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:19:34,422 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2025-01-09 03:19:34,422 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:19:34,533 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 19 proven. 8 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2025-01-09 03:19:34,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [194066337] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:19:34,533 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:19:34,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2025-01-09 03:19:34,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629035835] [2025-01-09 03:19:34,533 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:19:34,534 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-01-09 03:19:34,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:19:34,534 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-01-09 03:19:34,534 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2025-01-09 03:19:34,535 INFO L87 Difference]: Start difference. First operand 204 states and 315 transitions. Second operand has 21 states, 21 states have (on average 2.0) internal successors, (42), 19 states have internal predecessors, (42), 7 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 6 states have call predecessors, (19), 6 states have call successors, (19) [2025-01-09 03:19:34,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:19:34,863 INFO L93 Difference]: Finished difference Result 304 states and 465 transitions. [2025-01-09 03:19:34,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-01-09 03:19:34,863 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.0) internal successors, (42), 19 states have internal predecessors, (42), 7 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 6 states have call predecessors, (19), 6 states have call successors, (19) Word has length 59 [2025-01-09 03:19:34,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:19:34,864 INFO L225 Difference]: With dead ends: 304 [2025-01-09 03:19:34,864 INFO L226 Difference]: Without dead ends: 197 [2025-01-09 03:19:34,865 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 106 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=126, Invalid=524, Unknown=0, NotChecked=0, Total=650 [2025-01-09 03:19:34,865 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 44 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 03:19:34,865 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 412 Invalid, 416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 367 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 03:19:34,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2025-01-09 03:19:34,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 185. [2025-01-09 03:19:34,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 84 states have (on average 1.2619047619047619) internal successors, (106), 90 states have internal predecessors, (106), 89 states have call successors, (89), 11 states have call predecessors, (89), 11 states have return successors, (88), 83 states have call predecessors, (88), 88 states have call successors, (88) [2025-01-09 03:19:34,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 283 transitions. [2025-01-09 03:19:34,928 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 283 transitions. Word has length 59 [2025-01-09 03:19:34,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:19:34,929 INFO L471 AbstractCegarLoop]: Abstraction has 185 states and 283 transitions. [2025-01-09 03:19:34,929 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.0) internal successors, (42), 19 states have internal predecessors, (42), 7 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 6 states have call predecessors, (19), 6 states have call successors, (19) [2025-01-09 03:19:34,929 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 283 transitions. [2025-01-09 03:19:34,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-01-09 03:19:34,929 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:19:34,930 INFO L218 NwaCegarLoop]: trace histogram [8, 7, 7, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:19:34,936 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-01-09 03:19:35,130 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:19:35,131 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:19:35,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:19:35,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1688694770, now seen corresponding path program 1 times [2025-01-09 03:19:35,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:19:35,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703703350] [2025-01-09 03:19:35,131 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:19:35,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:19:35,135 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-01-09 03:19:35,141 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-01-09 03:19:35,141 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:19:35,141 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-09 03:19:35,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1380691795] [2025-01-09 03:19:35,142 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:19:35,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:19:35,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:19:35,143 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:19:35,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-01-09 03:19:35,164 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-01-09 03:19:35,177 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-01-09 03:19:35,177 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:19:35,177 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:19:35,179 INFO L256 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-01-09 03:19:35,183 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:19:35,243 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2025-01-09 03:19:35,243 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:19:35,290 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2025-01-09 03:19:35,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:19:35,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703703350] [2025-01-09 03:19:35,290 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-09 03:19:35,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1380691795] [2025-01-09 03:19:35,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1380691795] provided 1 perfect and 1 imperfect interpolant sequences [2025-01-09 03:19:35,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 03:19:35,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2025-01-09 03:19:35,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328303696] [2025-01-09 03:19:35,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:19:35,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 03:19:35,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:19:35,291 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 03:19:35,292 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-01-09 03:19:35,292 INFO L87 Difference]: Start difference. First operand 185 states and 283 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-01-09 03:19:35,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:19:35,360 INFO L93 Difference]: Finished difference Result 191 states and 288 transitions. [2025-01-09 03:19:35,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 03:19:35,360 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 66 [2025-01-09 03:19:35,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:19:35,362 INFO L225 Difference]: With dead ends: 191 [2025-01-09 03:19:35,362 INFO L226 Difference]: Without dead ends: 189 [2025-01-09 03:19:35,362 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-01-09 03:19:35,363 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 4 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:19:35,363 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 116 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:19:35,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2025-01-09 03:19:35,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2025-01-09 03:19:35,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 87 states have (on average 1.2528735632183907) internal successors, (109), 93 states have internal predecessors, (109), 89 states have call successors, (89), 12 states have call predecessors, (89), 12 states have return successors, (88), 83 states have call predecessors, (88), 88 states have call successors, (88) [2025-01-09 03:19:35,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 286 transitions. [2025-01-09 03:19:35,408 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 286 transitions. Word has length 66 [2025-01-09 03:19:35,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:19:35,408 INFO L471 AbstractCegarLoop]: Abstraction has 189 states and 286 transitions. [2025-01-09 03:19:35,408 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-01-09 03:19:35,408 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 286 transitions. [2025-01-09 03:19:35,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2025-01-09 03:19:35,409 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:19:35,409 INFO L218 NwaCegarLoop]: trace histogram [9, 8, 8, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:19:35,415 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-01-09 03:19:35,613 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-01-09 03:19:35,613 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:19:35,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:19:35,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1516996688, now seen corresponding path program 1 times [2025-01-09 03:19:35,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:19:35,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166671507] [2025-01-09 03:19:35,614 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:19:35,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:19:35,617 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 79 statements into 1 equivalence classes. [2025-01-09 03:19:35,626 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 79 of 79 statements. [2025-01-09 03:19:35,626 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:19:35,626 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-09 03:19:35,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [146685224] [2025-01-09 03:19:35,626 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:19:35,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:19:35,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:19:35,628 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:19:35,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-01-09 03:19:35,676 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 79 statements into 1 equivalence classes. [2025-01-09 03:19:35,701 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 79 of 79 statements. [2025-01-09 03:19:35,701 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:19:35,701 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:19:35,702 INFO L256 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 70 conjuncts are in the unsatisfiable core [2025-01-09 03:19:35,705 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:19:36,405 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 22 proven. 18 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2025-01-09 03:19:36,405 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:19:36,957 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 19 proven. 18 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2025-01-09 03:19:36,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:19:36,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166671507] [2025-01-09 03:19:36,958 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-09 03:19:36,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146685224] [2025-01-09 03:19:36,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146685224] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:19:36,958 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-09 03:19:36,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 32 [2025-01-09 03:19:36,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814568434] [2025-01-09 03:19:36,958 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-09 03:19:36,958 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2025-01-09 03:19:36,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:19:36,959 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2025-01-09 03:19:36,959 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=838, Unknown=0, NotChecked=0, Total=992 [2025-01-09 03:19:36,959 INFO L87 Difference]: Start difference. First operand 189 states and 286 transitions. Second operand has 32 states, 30 states have (on average 1.4333333333333333) internal successors, (43), 26 states have internal predecessors, (43), 11 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (23), 9 states have call predecessors, (23), 9 states have call successors, (23) [2025-01-09 03:19:44,958 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.97s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2025-01-09 03:19:46,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:19:46,004 INFO L93 Difference]: Finished difference Result 355 states and 562 transitions. [2025-01-09 03:19:46,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2025-01-09 03:19:46,004 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 30 states have (on average 1.4333333333333333) internal successors, (43), 26 states have internal predecessors, (43), 11 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (23), 9 states have call predecessors, (23), 9 states have call successors, (23) Word has length 79 [2025-01-09 03:19:46,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:19:46,010 INFO L225 Difference]: With dead ends: 355 [2025-01-09 03:19:46,010 INFO L226 Difference]: Without dead ends: 351 [2025-01-09 03:19:46,011 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2330 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=1586, Invalid=7156, Unknown=0, NotChecked=0, Total=8742 [2025-01-09 03:19:46,013 INFO L435 NwaCegarLoop]: 48 mSDtfsCounter, 173 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 941 mSolverCounterSat, 205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 620 SdHoareTripleChecker+Invalid, 1146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 205 IncrementalHoareTripleChecker+Valid, 941 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:19:46,013 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 620 Invalid, 1146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [205 Valid, 941 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2025-01-09 03:19:46,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2025-01-09 03:19:46,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 257. [2025-01-09 03:19:46,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 123 states have (on average 1.2520325203252032) internal successors, (154), 130 states have internal predecessors, (154), 117 states have call successors, (117), 16 states have call predecessors, (117), 16 states have return successors, (116), 110 states have call predecessors, (116), 116 states have call successors, (116) [2025-01-09 03:19:46,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 387 transitions. [2025-01-09 03:19:46,124 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 387 transitions. Word has length 79 [2025-01-09 03:19:46,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:19:46,124 INFO L471 AbstractCegarLoop]: Abstraction has 257 states and 387 transitions. [2025-01-09 03:19:46,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 30 states have (on average 1.4333333333333333) internal successors, (43), 26 states have internal predecessors, (43), 11 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (23), 9 states have call predecessors, (23), 9 states have call successors, (23) [2025-01-09 03:19:46,125 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 387 transitions. [2025-01-09 03:19:46,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2025-01-09 03:19:46,128 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:19:46,128 INFO L218 NwaCegarLoop]: trace histogram [10, 9, 9, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:19:46,134 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-01-09 03:19:46,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:19:46,329 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:19:46,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:19:46,329 INFO L85 PathProgramCache]: Analyzing trace with hash 182471842, now seen corresponding path program 1 times [2025-01-09 03:19:46,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:19:46,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65577051] [2025-01-09 03:19:46,329 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:19:46,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:19:46,336 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 82 statements into 1 equivalence classes. [2025-01-09 03:19:46,350 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 82 of 82 statements. [2025-01-09 03:19:46,350 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:19:46,351 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:19:46,549 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 24 proven. 16 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2025-01-09 03:19:46,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:19:46,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65577051] [2025-01-09 03:19:46,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65577051] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:19:46,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533311259] [2025-01-09 03:19:46,550 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:19:46,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:19:46,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:19:46,552 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:19:46,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-01-09 03:19:46,577 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 82 statements into 1 equivalence classes. [2025-01-09 03:19:46,593 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 82 of 82 statements. [2025-01-09 03:19:46,593 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:19:46,593 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:19:46,594 INFO L256 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-01-09 03:19:46,596 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:19:46,796 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 54 proven. 16 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2025-01-09 03:19:46,796 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:19:46,994 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 24 proven. 16 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2025-01-09 03:19:46,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1533311259] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:19:46,995 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:19:46,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 22 [2025-01-09 03:19:46,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110951228] [2025-01-09 03:19:46,995 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:19:46,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-01-09 03:19:46,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:19:46,996 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-01-09 03:19:46,996 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=396, Unknown=0, NotChecked=0, Total=462 [2025-01-09 03:19:46,996 INFO L87 Difference]: Start difference. First operand 257 states and 387 transitions. Second operand has 22 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 22 states have internal predecessors, (43), 11 states have call successors, (37), 2 states have call predecessors, (37), 3 states have return successors, (38), 10 states have call predecessors, (38), 11 states have call successors, (38) [2025-01-09 03:19:47,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:19:47,615 INFO L93 Difference]: Finished difference Result 344 states and 518 transitions. [2025-01-09 03:19:47,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-01-09 03:19:47,616 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 22 states have internal predecessors, (43), 11 states have call successors, (37), 2 states have call predecessors, (37), 3 states have return successors, (38), 10 states have call predecessors, (38), 11 states have call successors, (38) Word has length 82 [2025-01-09 03:19:47,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:19:47,617 INFO L225 Difference]: With dead ends: 344 [2025-01-09 03:19:47,617 INFO L226 Difference]: Without dead ends: 239 [2025-01-09 03:19:47,618 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 154 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=313, Invalid=1169, Unknown=0, NotChecked=0, Total=1482 [2025-01-09 03:19:47,618 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 80 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 03:19:47,618 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 377 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 03:19:47,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2025-01-09 03:19:47,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 238. [2025-01-09 03:19:47,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 113 states have (on average 1.247787610619469) internal successors, (141), 120 states have internal predecessors, (141), 109 states have call successors, (109), 15 states have call predecessors, (109), 15 states have return successors, (108), 102 states have call predecessors, (108), 108 states have call successors, (108) [2025-01-09 03:19:47,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 358 transitions. [2025-01-09 03:19:47,712 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 358 transitions. Word has length 82 [2025-01-09 03:19:47,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:19:47,712 INFO L471 AbstractCegarLoop]: Abstraction has 238 states and 358 transitions. [2025-01-09 03:19:47,712 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 22 states have internal predecessors, (43), 11 states have call successors, (37), 2 states have call predecessors, (37), 3 states have return successors, (38), 10 states have call predecessors, (38), 11 states have call successors, (38) [2025-01-09 03:19:47,712 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 358 transitions. [2025-01-09 03:19:47,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2025-01-09 03:19:47,713 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:19:47,713 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 10, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:19:47,723 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-01-09 03:19:47,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:19:47,914 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:19:47,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:19:47,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1480097080, now seen corresponding path program 1 times [2025-01-09 03:19:47,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:19:47,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94942434] [2025-01-09 03:19:47,915 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:19:47,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:19:47,920 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 84 statements into 1 equivalence classes. [2025-01-09 03:19:47,927 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 84 of 84 statements. [2025-01-09 03:19:47,930 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:19:47,930 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:19:48,095 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 26 proven. 15 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2025-01-09 03:19:48,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:19:48,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94942434] [2025-01-09 03:19:48,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94942434] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:19:48,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73830790] [2025-01-09 03:19:48,096 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:19:48,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:19:48,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:19:48,098 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:19:48,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-01-09 03:19:48,122 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 84 statements into 1 equivalence classes. [2025-01-09 03:19:48,137 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 84 of 84 statements. [2025-01-09 03:19:48,137 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:19:48,137 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:19:48,138 INFO L256 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-01-09 03:19:48,139 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:19:48,240 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 87 proven. 14 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2025-01-09 03:19:48,240 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:19:48,415 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 26 proven. 15 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2025-01-09 03:19:48,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [73830790] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:19:48,415 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:19:48,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2025-01-09 03:19:48,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891457438] [2025-01-09 03:19:48,415 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:19:48,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-01-09 03:19:48,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:19:48,416 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-01-09 03:19:48,416 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=463, Unknown=0, NotChecked=0, Total=552 [2025-01-09 03:19:48,416 INFO L87 Difference]: Start difference. First operand 238 states and 358 transitions. Second operand has 24 states, 24 states have (on average 1.7083333333333333) internal successors, (41), 24 states have internal predecessors, (41), 10 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (36), 9 states have call predecessors, (36), 10 states have call successors, (36) [2025-01-09 03:19:48,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:19:48,763 INFO L93 Difference]: Finished difference Result 353 states and 522 transitions. [2025-01-09 03:19:48,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-01-09 03:19:48,763 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.7083333333333333) internal successors, (41), 24 states have internal predecessors, (41), 10 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (36), 9 states have call predecessors, (36), 10 states have call successors, (36) Word has length 84 [2025-01-09 03:19:48,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:19:48,765 INFO L225 Difference]: With dead ends: 353 [2025-01-09 03:19:48,765 INFO L226 Difference]: Without dead ends: 197 [2025-01-09 03:19:48,765 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=183, Invalid=747, Unknown=0, NotChecked=0, Total=930 [2025-01-09 03:19:48,766 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 45 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 03:19:48,766 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 254 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 03:19:48,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2025-01-09 03:19:48,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 195. [2025-01-09 03:19:48,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 103 states have (on average 1.2135922330097086) internal successors, (125), 104 states have internal predecessors, (125), 77 states have call successors, (77), 14 states have call predecessors, (77), 14 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2025-01-09 03:19:48,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 278 transitions. [2025-01-09 03:19:48,832 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 278 transitions. Word has length 84 [2025-01-09 03:19:48,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:19:48,832 INFO L471 AbstractCegarLoop]: Abstraction has 195 states and 278 transitions. [2025-01-09 03:19:48,833 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.7083333333333333) internal successors, (41), 24 states have internal predecessors, (41), 10 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (36), 9 states have call predecessors, (36), 10 states have call successors, (36) [2025-01-09 03:19:48,833 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 278 transitions. [2025-01-09 03:19:48,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2025-01-09 03:19:48,833 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:19:48,833 INFO L218 NwaCegarLoop]: trace histogram [10, 9, 9, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:19:48,839 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-01-09 03:19:49,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-01-09 03:19:49,038 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:19:49,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:19:49,039 INFO L85 PathProgramCache]: Analyzing trace with hash -2017709822, now seen corresponding path program 2 times [2025-01-09 03:19:49,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:19:49,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509785143] [2025-01-09 03:19:49,039 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 03:19:49,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:19:49,042 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 85 statements into 2 equivalence classes. [2025-01-09 03:19:49,052 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 85 of 85 statements. [2025-01-09 03:19:49,052 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 03:19:49,052 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:19:49,464 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 28 proven. 18 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2025-01-09 03:19:49,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:19:49,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509785143] [2025-01-09 03:19:49,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509785143] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:19:49,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645474257] [2025-01-09 03:19:49,465 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 03:19:49,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:19:49,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:19:49,469 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:19:49,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-01-09 03:19:49,494 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 85 statements into 2 equivalence classes. [2025-01-09 03:19:49,514 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 85 of 85 statements. [2025-01-09 03:19:49,515 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 03:19:49,515 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:19:49,516 INFO L256 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-01-09 03:19:49,517 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:19:49,806 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 60 proven. 16 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2025-01-09 03:19:49,806 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:19:50,061 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 29 proven. 17 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2025-01-09 03:19:50,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645474257] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:19:50,061 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:19:50,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 13] total 32 [2025-01-09 03:19:50,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762076163] [2025-01-09 03:19:50,061 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:19:50,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2025-01-09 03:19:50,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:19:50,062 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2025-01-09 03:19:50,062 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=891, Unknown=0, NotChecked=0, Total=992 [2025-01-09 03:19:50,063 INFO L87 Difference]: Start difference. First operand 195 states and 278 transitions. Second operand has 32 states, 32 states have (on average 1.6875) internal successors, (54), 29 states have internal predecessors, (54), 11 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (36), 11 states have call predecessors, (36), 11 states have call successors, (36) [2025-01-09 03:19:51,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:19:51,986 INFO L93 Difference]: Finished difference Result 254 states and 371 transitions. [2025-01-09 03:19:51,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2025-01-09 03:19:51,986 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.6875) internal successors, (54), 29 states have internal predecessors, (54), 11 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (36), 11 states have call predecessors, (36), 11 states have call successors, (36) Word has length 85 [2025-01-09 03:19:51,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:19:51,988 INFO L225 Difference]: With dead ends: 254 [2025-01-09 03:19:51,988 INFO L226 Difference]: Without dead ends: 155 [2025-01-09 03:19:51,989 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 594 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=613, Invalid=2809, Unknown=0, NotChecked=0, Total=3422 [2025-01-09 03:19:51,990 INFO L435 NwaCegarLoop]: 55 mSDtfsCounter, 249 mSDsluCounter, 704 mSDsCounter, 0 mSdLazyCounter, 780 mSolverCounterSat, 309 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 759 SdHoareTripleChecker+Invalid, 1089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 309 IncrementalHoareTripleChecker+Valid, 780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-01-09 03:19:51,990 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 759 Invalid, 1089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [309 Valid, 780 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-01-09 03:19:51,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2025-01-09 03:19:52,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 107. [2025-01-09 03:19:52,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 61 states have (on average 1.1147540983606556) internal successors, (68), 62 states have internal predecessors, (68), 33 states have call successors, (33), 12 states have call predecessors, (33), 12 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2025-01-09 03:19:52,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 133 transitions. [2025-01-09 03:19:52,030 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 133 transitions. Word has length 85 [2025-01-09 03:19:52,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:19:52,030 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 133 transitions. [2025-01-09 03:19:52,031 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.6875) internal successors, (54), 29 states have internal predecessors, (54), 11 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (36), 11 states have call predecessors, (36), 11 states have call successors, (36) [2025-01-09 03:19:52,031 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 133 transitions. [2025-01-09 03:19:52,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2025-01-09 03:19:52,031 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:19:52,031 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 10, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:19:52,039 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2025-01-09 03:19:52,232 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-01-09 03:19:52,232 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:19:52,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:19:52,233 INFO L85 PathProgramCache]: Analyzing trace with hash 229427608, now seen corresponding path program 3 times [2025-01-09 03:19:52,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:19:52,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783854460] [2025-01-09 03:19:52,233 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 03:19:52,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:19:52,242 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 87 statements into 6 equivalence classes. [2025-01-09 03:19:52,268 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 72 of 87 statements. [2025-01-09 03:19:52,268 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-01-09 03:19:52,268 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:19:52,587 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 26 proven. 16 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2025-01-09 03:19:52,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:19:52,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783854460] [2025-01-09 03:19:52,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783854460] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:19:52,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797580289] [2025-01-09 03:19:52,588 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 03:19:52,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:19:52,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:19:52,593 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:19:52,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-01-09 03:19:52,628 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 87 statements into 6 equivalence classes. [2025-01-09 03:19:52,649 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 56 of 87 statements. [2025-01-09 03:19:52,649 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-01-09 03:19:52,649 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:19:52,651 INFO L256 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 33 conjuncts are in the unsatisfiable core [2025-01-09 03:19:52,652 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:19:52,867 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 31 proven. 12 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2025-01-09 03:19:52,867 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:19:53,014 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 22 proven. 11 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2025-01-09 03:19:53,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1797580289] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:19:53,015 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:19:53,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 7] total 24 [2025-01-09 03:19:53,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870473465] [2025-01-09 03:19:53,015 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:19:53,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-01-09 03:19:53,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:19:53,016 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-01-09 03:19:53,016 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=477, Unknown=0, NotChecked=0, Total=552 [2025-01-09 03:19:53,017 INFO L87 Difference]: Start difference. First operand 107 states and 133 transitions. Second operand has 24 states, 23 states have (on average 2.0) internal successors, (46), 20 states have internal predecessors, (46), 11 states have call successors, (36), 4 states have call predecessors, (36), 2 states have return successors, (35), 11 states have call predecessors, (35), 11 states have call successors, (35) [2025-01-09 03:19:53,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:19:53,859 INFO L93 Difference]: Finished difference Result 137 states and 164 transitions. [2025-01-09 03:19:53,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-01-09 03:19:53,860 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.0) internal successors, (46), 20 states have internal predecessors, (46), 11 states have call successors, (36), 4 states have call predecessors, (36), 2 states have return successors, (35), 11 states have call predecessors, (35), 11 states have call successors, (35) Word has length 87 [2025-01-09 03:19:53,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:19:53,861 INFO L225 Difference]: With dead ends: 137 [2025-01-09 03:19:53,861 INFO L226 Difference]: Without dead ends: 58 [2025-01-09 03:19:53,862 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=253, Invalid=1229, Unknown=0, NotChecked=0, Total=1482 [2025-01-09 03:19:53,862 INFO L435 NwaCegarLoop]: 41 mSDtfsCounter, 66 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-01-09 03:19:53,862 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 385 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 509 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-01-09 03:19:53,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2025-01-09 03:19:53,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2025-01-09 03:19:53,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 34 states have (on average 1.0294117647058822) internal successors, (35), 34 states have internal predecessors, (35), 17 states have call successors, (17), 7 states have call predecessors, (17), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2025-01-09 03:19:53,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 68 transitions. [2025-01-09 03:19:53,874 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 68 transitions. Word has length 87 [2025-01-09 03:19:53,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:19:53,874 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 68 transitions. [2025-01-09 03:19:53,874 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.0) internal successors, (46), 20 states have internal predecessors, (46), 11 states have call successors, (36), 4 states have call predecessors, (36), 2 states have return successors, (35), 11 states have call predecessors, (35), 11 states have call successors, (35) [2025-01-09 03:19:53,874 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 68 transitions. [2025-01-09 03:19:53,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2025-01-09 03:19:53,875 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:19:53,875 INFO L218 NwaCegarLoop]: trace histogram [13, 12, 12, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:19:53,881 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2025-01-09 03:19:54,077 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-01-09 03:19:54,078 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:19:54,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:19:54,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1995959018, now seen corresponding path program 2 times [2025-01-09 03:19:54,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:19:54,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360774031] [2025-01-09 03:19:54,079 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 03:19:54,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:19:54,083 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 97 statements into 2 equivalence classes. [2025-01-09 03:19:54,094 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 97 of 97 statements. [2025-01-09 03:19:54,094 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 03:19:54,095 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:19:54,272 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 24 proven. 26 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2025-01-09 03:19:54,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:19:54,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360774031] [2025-01-09 03:19:54,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360774031] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:19:54,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566732871] [2025-01-09 03:19:54,273 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 03:19:54,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:19:54,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:19:54,275 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:19:54,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-01-09 03:19:54,300 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 97 statements into 2 equivalence classes. [2025-01-09 03:19:54,318 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 97 of 97 statements. [2025-01-09 03:19:54,318 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 03:19:54,318 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:19:54,319 INFO L256 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-01-09 03:19:54,320 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:19:54,481 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 25 proven. 25 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2025-01-09 03:19:54,481 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:19:54,725 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 25 proven. 25 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2025-01-09 03:19:54,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [566732871] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:19:54,725 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:19:54,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 28 [2025-01-09 03:19:54,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970359684] [2025-01-09 03:19:54,725 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:19:54,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-01-09 03:19:54,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:19:54,726 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-01-09 03:19:54,726 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=667, Unknown=0, NotChecked=0, Total=756 [2025-01-09 03:19:54,727 INFO L87 Difference]: Start difference. First operand 58 states and 68 transitions. Second operand has 28 states, 28 states have (on average 1.6785714285714286) internal successors, (47), 28 states have internal predecessors, (47), 14 states have call successors, (47), 2 states have call predecessors, (47), 2 states have return successors, (48), 12 states have call predecessors, (48), 13 states have call successors, (48) [2025-01-09 03:19:55,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:19:55,011 INFO L93 Difference]: Finished difference Result 58 states and 68 transitions. [2025-01-09 03:19:55,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-01-09 03:19:55,011 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.6785714285714286) internal successors, (47), 28 states have internal predecessors, (47), 14 states have call successors, (47), 2 states have call predecessors, (47), 2 states have return successors, (48), 12 states have call predecessors, (48), 13 states have call successors, (48) Word has length 97 [2025-01-09 03:19:55,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:19:55,012 INFO L225 Difference]: With dead ends: 58 [2025-01-09 03:19:55,012 INFO L226 Difference]: Without dead ends: 0 [2025-01-09 03:19:55,012 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=215, Invalid=975, Unknown=0, NotChecked=0, Total=1190 [2025-01-09 03:19:55,013 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 46 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 03:19:55,013 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 390 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 03:19:55,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2025-01-09 03:19:55,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2025-01-09 03:19:55,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:19:55,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2025-01-09 03:19:55,013 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 97 [2025-01-09 03:19:55,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:19:55,013 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-01-09 03:19:55,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.6785714285714286) internal successors, (47), 28 states have internal predecessors, (47), 14 states have call successors, (47), 2 states have call predecessors, (47), 2 states have return successors, (48), 12 states have call predecessors, (48), 13 states have call successors, (48) [2025-01-09 03:19:55,014 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2025-01-09 03:19:55,014 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2025-01-09 03:19:55,015 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-01-09 03:19:55,021 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2025-01-09 03:19:55,216 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-01-09 03:19:55,219 INFO L422 BasicCegarLoop]: Path program histogram: [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:19:55,220 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2025-01-09 03:19:59,178 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-01-09 03:19:59,203 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.01 03:19:59 BoogieIcfgContainer [2025-01-09 03:19:59,203 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-01-09 03:19:59,204 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-01-09 03:19:59,204 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-01-09 03:19:59,204 INFO L274 PluginConnector]: Witness Printer initialized [2025-01-09 03:19:59,212 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 03:19:26" (3/4) ... [2025-01-09 03:19:59,213 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-01-09 03:19:59,220 INFO L362 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2025-01-09 03:19:59,220 INFO L362 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2025-01-09 03:19:59,224 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2025-01-09 03:19:59,224 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2025-01-09 03:19:59,224 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-01-09 03:19:59,224 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-01-09 03:19:59,293 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-01-09 03:19:59,293 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-01-09 03:19:59,293 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-01-09 03:19:59,294 INFO L158 Benchmark]: Toolchain (without parser) took 33561.30ms. Allocated memory was 142.6MB in the beginning and 478.2MB in the end (delta: 335.5MB). Free memory was 107.2MB in the beginning and 284.4MB in the end (delta: -177.2MB). Peak memory consumption was 152.5MB. Max. memory is 16.1GB. [2025-01-09 03:19:59,294 INFO L158 Benchmark]: CDTParser took 1.77ms. Allocated memory is still 201.3MB. Free memory is still 125.0MB. There was no memory consumed. Max. memory is 16.1GB. [2025-01-09 03:19:59,294 INFO L158 Benchmark]: CACSL2BoogieTranslator took 190.61ms. Allocated memory is still 142.6MB. Free memory was 107.2MB in the beginning and 95.3MB in the end (delta: 11.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-09 03:19:59,294 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.02ms. Allocated memory is still 142.6MB. Free memory was 95.3MB in the beginning and 94.3MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-09 03:19:59,295 INFO L158 Benchmark]: Boogie Preprocessor took 28.05ms. Allocated memory is still 142.6MB. Free memory was 94.3MB in the beginning and 93.2MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-09 03:19:59,295 INFO L158 Benchmark]: RCFGBuilder took 222.53ms. Allocated memory is still 142.6MB. Free memory was 93.2MB in the beginning and 81.6MB in the end (delta: 11.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-01-09 03:19:59,296 INFO L158 Benchmark]: TraceAbstraction took 33003.72ms. Allocated memory was 142.6MB in the beginning and 478.2MB in the end (delta: 335.5MB). Free memory was 80.6MB in the beginning and 292.7MB in the end (delta: -212.1MB). Peak memory consumption was 254.0MB. Max. memory is 16.1GB. [2025-01-09 03:19:59,296 INFO L158 Benchmark]: Witness Printer took 89.59ms. Allocated memory is still 478.2MB. Free memory was 292.7MB in the beginning and 284.4MB in the end (delta: 8.3MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-09 03:19:59,297 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.77ms. Allocated memory is still 201.3MB. Free memory is still 125.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 190.61ms. Allocated memory is still 142.6MB. Free memory was 107.2MB in the beginning and 95.3MB in the end (delta: 11.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.02ms. Allocated memory is still 142.6MB. Free memory was 95.3MB in the beginning and 94.3MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 28.05ms. Allocated memory is still 142.6MB. Free memory was 94.3MB in the beginning and 93.2MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 222.53ms. Allocated memory is still 142.6MB. Free memory was 93.2MB in the beginning and 81.6MB in the end (delta: 11.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 33003.72ms. Allocated memory was 142.6MB in the beginning and 478.2MB in the end (delta: 335.5MB). Free memory was 80.6MB in the beginning and 292.7MB in the end (delta: -212.1MB). Peak memory consumption was 254.0MB. Max. memory is 16.1GB. * Witness Printer took 89.59ms. Allocated memory is still 478.2MB. Free memory was 292.7MB in the beginning and 284.4MB in the end (delta: 8.3MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 29.0s, OverallIterations: 18, TraceHistogramMax: 13, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 16.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1027 SdHoareTripleChecker+Valid, 7.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 969 mSDsluCounter, 4805 SdHoareTripleChecker+Invalid, 6.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4143 mSDsCounter, 1052 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4553 IncrementalHoareTripleChecker+Invalid, 5605 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1052 mSolverCounterUnsat, 662 mSDtfsCounter, 4553 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1996 GetRequests, 1572 SyntacticMatches, 12 SemanticMatches, 412 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4316 ImplicationChecksByTransitivity, 10.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=257occurred in iteration=13, InterpolantAutomatonStates: 275, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 18 MinimizatonAttempts, 310 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 6.9s InterpolantComputationTime, 1989 NumberOfCodeBlocks, 1943 NumberOfCodeBlocksAsserted, 46 NumberOfCheckSat, 2321 ConstructedInterpolants, 6 QuantifiedInterpolants, 9128 SizeOfPredicates, 46 NumberOfNonLiveVariables, 2587 ConjunctsInSsa, 311 ConjunctsInUnsatCore, 38 InterpolantComputations, 7 PerfectInterpolantSequences, 4557/4910 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 42]: Loop Invariant Derived loop invariant: ((((((((((((((p == 0) && (((__int128) b + 1) <= a)) && (q == 1)) && (k == 0)) && (s == 0)) && (1 <= x)) && (c <= 2)) && (r == 1)) && (c == y)) && (((__int128) 2 * b) <= y)) && (((__int128) ((long long) 2 * x) + a) <= (((__int128) 2 * b) + 2))) || (((((((((((p == 0) && (((__int128) b + 1) <= a)) && ((((__int128) 3 * b) + 1) <= (((long long) 2 * x) + y))) && (q == 1)) && (s == 0)) && (r == 1)) && (((__int128) c + x) <= b)) && (2 == k)) && (((__int128) ((long long) 2 * x) + a) <= (((__int128) 2 * b) + 2))) && (((__int128) b + 1) <= ((__int128) ((long long) 2 * x) + c))) && ((((long long) 2 * x) + y) <= (((__int128) 2 * b) + 2)))) || (((((((((((c == 0) && ((y + ((__int128) k * y)) == ((__int128) b + x))) && (p == 1)) && (1 <= y)) && (b == y)) && (r == 0)) && (q == 0)) && (1 <= x)) && (a == x)) && (x <= 2)) && (s == 1))) || ((((((((((((p == 1) && (1 <= y)) && (a == c)) && (b == y)) && (r == 0)) && (q == 0)) && (k == 0)) && (1 <= x)) && (a == x)) && ((((long long) 2 * x) + y) <= (2 + ((__int128) 2 * a)))) && (x <= 2)) && (s == 1))) - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: ((((((((((((((((d == 1) && (p == 1)) && (1 <= y)) && (a == c)) && (b == v)) && (v == y)) && (r == 0)) && (q == 0)) && (k == 0)) && (b <= c)) && (a == x)) && (x <= 2)) && (s == 1)) || ((((((((((((((d == 1) && (p == 0)) && (((__int128) b + 1) <= a)) && (b == x)) && (((__int128) b + 1) <= c)) && (b == v)) && (q == 1)) && (k == 0)) && (s == 0)) && (1 <= x)) && (r == 1)) && (c == y)) && (((__int128) ((long long) 2 * x) + a) <= (((__int128) 2 * b) + 2))) && ((((long long) 2 * x) + y) <= (((__int128) 2 * b) + 2)))) || (((((((((((((p == 1) && (1 <= y)) && (b == y)) && (v <= c)) && (r == 0)) && (q == 0)) && (((long long) 3 * y) == ((__int128) b + x))) && (k == 0)) && (c <= 2)) && (((__int128) 2 * b) == v)) && (a == x)) && (2 == d)) && (s == 1))) || ((((((((((((((p == 0) && (a == y)) && (((__int128) b + 1) <= a)) && (b == x)) && (((__int128) b + 1) <= c)) && (q == 1)) && (k == 0)) && (s == 0)) && (1 <= x)) && (r == 1)) && (((__int128) 2 * b) == v)) && (2 == d)) && (((__int128) ((long long) 2 * x) + c) <= (((__int128) 2 * b) + 2))) && ((((long long) 2 * x) + y) <= (((__int128) 2 * b) + 2)))) - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: ((((((((((((((long long) x + 1) <= y) && (p == 1)) && (y <= 2)) && (b == 0)) && (r == 0)) && (1 <= x)) && (((__int128) 2 + q) == 0)) && (a == x)) && (s == 1)) || ((((((((b == 1) && (p == 0)) && (2 == y)) && (x == 1)) && (q == 1)) && (s == 0)) && (r == 1)) && (2 == a))) || ((((((((((p == 1) && (b == y)) && (1 <= b)) && (r == 0)) && (q == 0)) && (1 <= x)) && (a == x)) && ((((long long) 2 * x) + y) <= (2 + ((__int128) 2 * a)))) && (x <= 2)) && (s == 1))) || (((((((((y == ((a + ((__int128) s * y)) + ((__int128) q * x))) && (p == 0)) && (a == y)) && (a <= 2)) && (b == 0)) && (1 <= a)) && (1 <= x)) && (r == 1)) && (x <= 2))) RESULT: Ultimate proved your program to be correct! [2025-01-09 03:19:59,348 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE