./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/reducercommutativity/sum40-2.i --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/reducercommutativity/sum40-2.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d615723bd3f4193c30af142b587a80ce924c7083a75b532c90d98415d1700958 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-08 22:16:24,852 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-08 22:16:24,902 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-08 22:16:24,906 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-08 22:16:24,906 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-08 22:16:24,919 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-08 22:16:24,920 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-08 22:16:24,920 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-08 22:16:24,920 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-08 22:16:24,920 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-08 22:16:24,920 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-08 22:16:24,921 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-08 22:16:24,921 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-08 22:16:24,921 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-08 22:16:24,921 INFO L153 SettingsManager]: * Use SBE=true [2025-01-08 22:16:24,921 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-08 22:16:24,921 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-08 22:16:24,921 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-08 22:16:24,921 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-08 22:16:24,921 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-08 22:16:24,921 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-08 22:16:24,922 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-08 22:16:24,922 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-08 22:16:24,922 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-08 22:16:24,922 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-08 22:16:24,922 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-08 22:16:24,922 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-08 22:16:24,922 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-08 22:16:24,922 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-08 22:16:24,922 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-08 22:16:24,922 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-08 22:16:24,922 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-08 22:16:24,922 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-08 22:16:24,923 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-08 22:16:24,923 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-08 22:16:24,923 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-08 22:16:24,923 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-08 22:16:24,923 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-08 22:16:24,923 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-08 22:16:24,923 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-08 22:16:24,923 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-08 22:16:24,923 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-08 22:16:24,923 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-08 22:16:24,923 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-08 22:16:24,923 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-08 22:16:24,923 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-08 22:16:24,923 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-08 22:16:24,924 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-08 22:16:24,924 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 -> d615723bd3f4193c30af142b587a80ce924c7083a75b532c90d98415d1700958 [2025-01-08 22:16:25,104 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-08 22:16:25,113 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-08 22:16:25,115 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-08 22:16:25,116 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-08 22:16:25,117 INFO L274 PluginConnector]: CDTParser initialized [2025-01-08 22:16:25,118 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/reducercommutativity/sum40-2.i [2025-01-08 22:16:26,227 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/ce877caa7/a19669805a1d4553b7b248006d33985f/FLAGc8faae30b [2025-01-08 22:16:26,506 INFO L384 CDTParser]: Found 1 translation units. [2025-01-08 22:16:26,507 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/reducercommutativity/sum40-2.i [2025-01-08 22:16:26,512 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/ce877caa7/a19669805a1d4553b7b248006d33985f/FLAGc8faae30b [2025-01-08 22:16:26,812 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/ce877caa7/a19669805a1d4553b7b248006d33985f [2025-01-08 22:16:26,814 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-08 22:16:26,815 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-08 22:16:26,818 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-08 22:16:26,818 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-08 22:16:26,821 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-08 22:16:26,824 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.01 10:16:26" (1/1) ... [2025-01-08 22:16:26,825 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c351223 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:16:26, skipping insertion in model container [2025-01-08 22:16:26,825 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.01 10:16:26" (1/1) ... [2025-01-08 22:16:26,836 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-08 22:16:26,935 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/reducercommutativity/sum40-2.i[1277,1290] [2025-01-08 22:16:26,937 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-08 22:16:26,943 INFO L200 MainTranslator]: Completed pre-run [2025-01-08 22:16:26,954 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/reducercommutativity/sum40-2.i[1277,1290] [2025-01-08 22:16:26,955 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-08 22:16:26,964 INFO L204 MainTranslator]: Completed translation [2025-01-08 22:16:26,965 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:16:26 WrapperNode [2025-01-08 22:16:26,965 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-08 22:16:26,966 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-08 22:16:26,966 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-08 22:16:26,966 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-08 22:16:26,970 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:16:26" (1/1) ... [2025-01-08 22:16:26,974 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:16:26" (1/1) ... [2025-01-08 22:16:26,984 INFO L138 Inliner]: procedures = 16, calls = 22, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 63 [2025-01-08 22:16:26,984 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-08 22:16:26,985 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-08 22:16:26,985 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-08 22:16:26,985 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-08 22:16:26,991 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:16:26" (1/1) ... [2025-01-08 22:16:26,991 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:16:26" (1/1) ... [2025-01-08 22:16:26,993 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:16:26" (1/1) ... [2025-01-08 22:16:26,999 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 5 writes are split as follows [0, 5]. [2025-01-08 22:16:27,000 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:16:26" (1/1) ... [2025-01-08 22:16:27,000 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:16:26" (1/1) ... [2025-01-08 22:16:27,006 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:16:26" (1/1) ... [2025-01-08 22:16:27,007 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:16:26" (1/1) ... [2025-01-08 22:16:27,010 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:16:26" (1/1) ... [2025-01-08 22:16:27,011 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:16:26" (1/1) ... [2025-01-08 22:16:27,014 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:16:26" (1/1) ... [2025-01-08 22:16:27,015 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-08 22:16:27,016 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-08 22:16:27,016 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-08 22:16:27,016 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-08 22:16:27,016 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:16:26" (1/1) ... [2025-01-08 22:16:27,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-08 22:16:27,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:16:27,039 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-08 22:16:27,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-08 22:16:27,058 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-08 22:16:27,058 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2025-01-08 22:16:27,058 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2025-01-08 22:16:27,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-08 22:16:27,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-01-08 22:16:27,058 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-01-08 22:16:27,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-01-08 22:16:27,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-01-08 22:16:27,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-08 22:16:27,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-08 22:16:27,059 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-01-08 22:16:27,059 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-01-08 22:16:27,059 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-01-08 22:16:27,105 INFO L234 CfgBuilder]: Building ICFG [2025-01-08 22:16:27,106 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-08 22:16:27,208 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2025-01-08 22:16:27,208 INFO L283 CfgBuilder]: Performing block encoding [2025-01-08 22:16:27,214 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-08 22:16:27,214 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-08 22:16:27,214 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.01 10:16:27 BoogieIcfgContainer [2025-01-08 22:16:27,215 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-08 22:16:27,216 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-08 22:16:27,216 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-08 22:16:27,219 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-08 22:16:27,220 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.01 10:16:26" (1/3) ... [2025-01-08 22:16:27,220 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d535258 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.01 10:16:27, skipping insertion in model container [2025-01-08 22:16:27,220 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:16:26" (2/3) ... [2025-01-08 22:16:27,220 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d535258 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.01 10:16:27, skipping insertion in model container [2025-01-08 22:16:27,221 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.01 10:16:27" (3/3) ... [2025-01-08 22:16:27,221 INFO L128 eAbstractionObserver]: Analyzing ICFG sum40-2.i [2025-01-08 22:16:27,232 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-08 22:16:27,233 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG sum40-2.i that has 2 procedures, 21 locations, 1 initial locations, 3 loop locations, and 1 error locations. [2025-01-08 22:16:27,283 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-08 22:16:27,291 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;@310c4068, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-08 22:16:27,291 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-08 22:16:27,295 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 16 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-08 22:16:27,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-01-08 22:16:27,301 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:16:27,301 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:16:27,301 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:16:27,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:16:27,307 INFO L85 PathProgramCache]: Analyzing trace with hash -733969895, now seen corresponding path program 1 times [2025-01-08 22:16:27,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:16:27,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160765816] [2025-01-08 22:16:27,313 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:16:27,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:16:27,387 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-01-08 22:16:27,402 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-01-08 22:16:27,403 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:16:27,403 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:16:27,523 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-01-08 22:16:27,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:16:27,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160765816] [2025-01-08 22:16:27,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160765816] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-08 22:16:27,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-08 22:16:27,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-08 22:16:27,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758944989] [2025-01-08 22:16:27,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-08 22:16:27,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-08 22:16:27,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:16:27,544 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-08 22:16:27,545 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-08 22:16:27,546 INFO L87 Difference]: Start difference. First operand has 21 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 16 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2025-01-08 22:16:27,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:16:27,568 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions. [2025-01-08 22:16:27,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-08 22:16:27,570 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 24 [2025-01-08 22:16:27,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:16:27,578 INFO L225 Difference]: With dead ends: 40 [2025-01-08 22:16:27,578 INFO L226 Difference]: Without dead ends: 18 [2025-01-08 22:16:27,584 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-08 22:16:27,586 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:16:27,587 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:16:27,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2025-01-08 22:16:27,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2025-01-08 22:16:27,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-08 22:16:27,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2025-01-08 22:16:27,634 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 24 [2025-01-08 22:16:27,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:16:27,634 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2025-01-08 22:16:27,634 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2025-01-08 22:16:27,634 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2025-01-08 22:16:27,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-01-08 22:16:27,635 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:16:27,635 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:16:27,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-08 22:16:27,636 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:16:27,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:16:27,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1924336377, now seen corresponding path program 1 times [2025-01-08 22:16:27,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:16:27,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686242419] [2025-01-08 22:16:27,637 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:16:27,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:16:27,656 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-01-08 22:16:27,664 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-01-08 22:16:27,667 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:16:27,667 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:16:27,762 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-01-08 22:16:27,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:16:27,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686242419] [2025-01-08 22:16:27,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686242419] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:16:27,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2111650402] [2025-01-08 22:16:27,764 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:16:27,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:16:27,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:16:27,767 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:16:27,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-01-08 22:16:27,808 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-01-08 22:16:27,837 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-01-08 22:16:27,837 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:16:27,837 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:16:27,839 INFO L256 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-01-08 22:16:27,842 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:16:27,859 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-01-08 22:16:27,859 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-08 22:16:27,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2111650402] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-08 22:16:27,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-08 22:16:27,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2025-01-08 22:16:27,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501485761] [2025-01-08 22:16:27,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-08 22:16:27,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-08 22:16:27,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:16:27,864 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-08 22:16:27,864 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-01-08 22:16:27,865 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2025-01-08 22:16:27,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:16:27,872 INFO L93 Difference]: Finished difference Result 32 states and 42 transitions. [2025-01-08 22:16:27,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-08 22:16:27,873 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25 [2025-01-08 22:16:27,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:16:27,873 INFO L225 Difference]: With dead ends: 32 [2025-01-08 22:16:27,873 INFO L226 Difference]: Without dead ends: 19 [2025-01-08 22:16:27,873 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-01-08 22:16:27,874 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:16:27,874 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:16:27,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2025-01-08 22:16:27,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2025-01-08 22:16:27,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-08 22:16:27,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2025-01-08 22:16:27,878 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 25 [2025-01-08 22:16:27,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:16:27,878 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2025-01-08 22:16:27,878 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2025-01-08 22:16:27,878 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2025-01-08 22:16:27,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2025-01-08 22:16:27,879 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:16:27,879 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:16:27,887 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-01-08 22:16:28,079 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:16:28,080 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:16:28,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:16:28,081 INFO L85 PathProgramCache]: Analyzing trace with hash -777568978, now seen corresponding path program 1 times [2025-01-08 22:16:28,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:16:28,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098099443] [2025-01-08 22:16:28,081 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:16:28,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:16:28,092 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-01-08 22:16:28,095 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-01-08 22:16:28,095 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:16:28,095 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:16:28,159 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-01-08 22:16:28,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:16:28,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098099443] [2025-01-08 22:16:28,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098099443] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:16:28,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1729945553] [2025-01-08 22:16:28,160 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:16:28,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:16:28,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:16:28,165 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:16:28,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-01-08 22:16:28,207 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-01-08 22:16:28,228 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-01-08 22:16:28,229 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:16:28,229 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:16:28,230 INFO L256 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-01-08 22:16:28,231 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:16:28,240 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-01-08 22:16:28,241 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-08 22:16:28,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1729945553] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-08 22:16:28,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-08 22:16:28,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2025-01-08 22:16:28,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085643065] [2025-01-08 22:16:28,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-08 22:16:28,242 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-08 22:16:28,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:16:28,242 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-08 22:16:28,242 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-01-08 22:16:28,242 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-01-08 22:16:28,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:16:28,250 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2025-01-08 22:16:28,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-08 22:16:28,251 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 28 [2025-01-08 22:16:28,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:16:28,251 INFO L225 Difference]: With dead ends: 30 [2025-01-08 22:16:28,251 INFO L226 Difference]: Without dead ends: 20 [2025-01-08 22:16:28,252 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-01-08 22:16:28,252 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:16:28,253 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 37 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:16:28,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2025-01-08 22:16:28,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2025-01-08 22:16:28,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-08 22:16:28,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2025-01-08 22:16:28,256 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 28 [2025-01-08 22:16:28,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:16:28,257 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2025-01-08 22:16:28,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-01-08 22:16:28,257 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2025-01-08 22:16:28,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-01-08 22:16:28,257 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:16:28,257 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:16:28,266 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-01-08 22:16:28,462 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 [2025-01-08 22:16:28,462 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:16:28,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:16:28,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1570668432, now seen corresponding path program 1 times [2025-01-08 22:16:28,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:16:28,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453009191] [2025-01-08 22:16:28,463 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:16:28,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:16:28,475 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-01-08 22:16:28,481 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-01-08 22:16:28,484 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:16:28,485 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:16:28,555 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-01-08 22:16:28,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:16:28,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453009191] [2025-01-08 22:16:28,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453009191] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:16:28,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347470435] [2025-01-08 22:16:28,556 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:16:28,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:16:28,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:16:28,558 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:16:28,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-01-08 22:16:28,600 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-01-08 22:16:28,621 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-01-08 22:16:28,621 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:16:28,621 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:16:28,622 INFO L256 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-08 22:16:28,623 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:16:28,642 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-01-08 22:16:28,642 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:16:28,674 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-01-08 22:16:28,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [347470435] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:16:28,674 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:16:28,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-01-08 22:16:28,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148482412] [2025-01-08 22:16:28,675 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:16:28,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-08 22:16:28,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:16:28,676 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-08 22:16:28,676 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-01-08 22:16:28,676 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2025-01-08 22:16:28,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:16:28,688 INFO L93 Difference]: Finished difference Result 39 states and 49 transitions. [2025-01-08 22:16:28,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-08 22:16:28,689 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 29 [2025-01-08 22:16:28,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:16:28,689 INFO L225 Difference]: With dead ends: 39 [2025-01-08 22:16:28,689 INFO L226 Difference]: Without dead ends: 23 [2025-01-08 22:16:28,689 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-01-08 22:16:28,690 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:16:28,690 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 74 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:16:28,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2025-01-08 22:16:28,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2025-01-08 22:16:28,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-08 22:16:28,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2025-01-08 22:16:28,693 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 29 [2025-01-08 22:16:28,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:16:28,693 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2025-01-08 22:16:28,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2025-01-08 22:16:28,694 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2025-01-08 22:16:28,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2025-01-08 22:16:28,694 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:16:28,694 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:16:28,702 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-01-08 22:16:28,895 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 [2025-01-08 22:16:28,895 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:16:28,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:16:28,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1010131280, now seen corresponding path program 2 times [2025-01-08 22:16:28,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:16:28,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410348146] [2025-01-08 22:16:28,896 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:16:28,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:16:28,905 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 32 statements into 2 equivalence classes. [2025-01-08 22:16:28,915 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 32 of 32 statements. [2025-01-08 22:16:28,916 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:16:28,916 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:16:28,956 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-01-08 22:16:28,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:16:28,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410348146] [2025-01-08 22:16:28,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410348146] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:16:28,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885355168] [2025-01-08 22:16:28,957 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:16:28,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:16:28,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:16:28,961 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:16:28,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-01-08 22:16:29,004 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 32 statements into 2 equivalence classes. [2025-01-08 22:16:29,026 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 32 of 32 statements. [2025-01-08 22:16:29,026 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:16:29,026 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:16:29,027 INFO L256 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-08 22:16:29,028 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:16:29,066 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-01-08 22:16:29,066 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:16:29,134 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-01-08 22:16:29,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1885355168] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:16:29,134 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:16:29,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2025-01-08 22:16:29,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601393831] [2025-01-08 22:16:29,134 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:16:29,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-01-08 22:16:29,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:16:29,135 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-01-08 22:16:29,135 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2025-01-08 22:16:29,135 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 14 states have internal predecessors, (34), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2025-01-08 22:16:29,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:16:29,161 INFO L93 Difference]: Finished difference Result 46 states and 63 transitions. [2025-01-08 22:16:29,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-01-08 22:16:29,161 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 14 states have internal predecessors, (34), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) Word has length 32 [2025-01-08 22:16:29,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:16:29,162 INFO L225 Difference]: With dead ends: 46 [2025-01-08 22:16:29,162 INFO L226 Difference]: Without dead ends: 30 [2025-01-08 22:16:29,162 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2025-01-08 22:16:29,163 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:16:29,163 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 155 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:16:29,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2025-01-08 22:16:29,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2025-01-08 22:16:29,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 25 states have (on average 1.12) internal successors, (28), 25 states have internal predecessors, (28), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-08 22:16:29,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2025-01-08 22:16:29,167 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 32 [2025-01-08 22:16:29,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:16:29,167 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2025-01-08 22:16:29,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 14 states have internal predecessors, (34), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2025-01-08 22:16:29,167 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2025-01-08 22:16:29,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2025-01-08 22:16:29,168 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:16:29,168 INFO L218 NwaCegarLoop]: trace histogram [10, 6, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:16:29,176 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 [2025-01-08 22:16:29,372 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 [2025-01-08 22:16:29,372 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:16:29,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:16:29,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1583012915, now seen corresponding path program 3 times [2025-01-08 22:16:29,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:16:29,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067257468] [2025-01-08 22:16:29,374 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:16:29,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:16:29,391 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 41 statements into 6 equivalence classes. [2025-01-08 22:16:29,406 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 22 of 41 statements. [2025-01-08 22:16:29,407 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-08 22:16:29,407 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:16:29,461 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 22 proven. 3 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2025-01-08 22:16:29,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:16:29,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067257468] [2025-01-08 22:16:29,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067257468] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:16:29,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2105703939] [2025-01-08 22:16:29,462 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:16:29,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:16:29,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:16:29,468 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:16:29,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-01-08 22:16:29,518 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 41 statements into 6 equivalence classes. [2025-01-08 22:16:29,532 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 22 of 41 statements. [2025-01-08 22:16:29,533 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-08 22:16:29,533 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:16:29,533 INFO L256 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-08 22:16:29,535 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:16:29,546 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 22 proven. 3 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2025-01-08 22:16:29,547 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:16:29,604 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 22 proven. 3 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2025-01-08 22:16:29,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2105703939] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:16:29,605 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:16:29,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2025-01-08 22:16:29,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210547780] [2025-01-08 22:16:29,605 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:16:29,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-01-08 22:16:29,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:16:29,606 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-01-08 22:16:29,606 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2025-01-08 22:16:29,606 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2025-01-08 22:16:29,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:16:29,619 INFO L93 Difference]: Finished difference Result 50 states and 63 transitions. [2025-01-08 22:16:29,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-08 22:16:29,619 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 41 [2025-01-08 22:16:29,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:16:29,620 INFO L225 Difference]: With dead ends: 50 [2025-01-08 22:16:29,620 INFO L226 Difference]: Without dead ends: 34 [2025-01-08 22:16:29,620 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2025-01-08 22:16:29,620 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:16:29,621 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 74 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:16:29,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2025-01-08 22:16:29,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2025-01-08 22:16:29,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 29 states have (on average 1.103448275862069) internal successors, (32), 29 states have internal predecessors, (32), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-08 22:16:29,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2025-01-08 22:16:29,625 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 41 [2025-01-08 22:16:29,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:16:29,625 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2025-01-08 22:16:29,625 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2025-01-08 22:16:29,625 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2025-01-08 22:16:29,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2025-01-08 22:16:29,626 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:16:29,626 INFO L218 NwaCegarLoop]: trace histogram [18, 10, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:16:29,635 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-01-08 22:16:29,830 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 [2025-01-08 22:16:29,830 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:16:29,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:16:29,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1087566323, now seen corresponding path program 4 times [2025-01-08 22:16:29,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:16:29,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156151100] [2025-01-08 22:16:29,831 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:16:29,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:16:29,843 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 53 statements into 2 equivalence classes. [2025-01-08 22:16:29,870 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 53 of 53 statements. [2025-01-08 22:16:29,874 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-08 22:16:29,874 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:16:30,115 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2025-01-08 22:16:30,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:16:30,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156151100] [2025-01-08 22:16:30,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156151100] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:16:30,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319003060] [2025-01-08 22:16:30,115 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:16:30,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:16:30,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:16:30,117 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:16:30,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-01-08 22:16:30,165 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 53 statements into 2 equivalence classes. [2025-01-08 22:16:30,197 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 53 of 53 statements. [2025-01-08 22:16:30,197 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-08 22:16:30,197 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:16:30,198 INFO L256 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-01-08 22:16:30,200 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:16:30,221 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2025-01-08 22:16:30,222 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:16:30,433 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2025-01-08 22:16:30,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1319003060] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:16:30,433 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:16:30,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2025-01-08 22:16:30,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387177174] [2025-01-08 22:16:30,433 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:16:30,434 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-01-08 22:16:30,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:16:30,434 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-01-08 22:16:30,435 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2025-01-08 22:16:30,435 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand has 25 states, 25 states have (on average 1.68) internal successors, (42), 25 states have internal predecessors, (42), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2025-01-08 22:16:30,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:16:30,483 INFO L93 Difference]: Finished difference Result 67 states and 86 transitions. [2025-01-08 22:16:30,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-01-08 22:16:30,484 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.68) internal successors, (42), 25 states have internal predecessors, (42), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 53 [2025-01-08 22:16:30,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:16:30,484 INFO L225 Difference]: With dead ends: 67 [2025-01-08 22:16:30,484 INFO L226 Difference]: Without dead ends: 46 [2025-01-08 22:16:30,484 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2025-01-08 22:16:30,485 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:16:30,485 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 110 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:16:30,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2025-01-08 22:16:30,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2025-01-08 22:16:30,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 41 states have (on average 1.0731707317073171) internal successors, (44), 41 states have internal predecessors, (44), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-08 22:16:30,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2025-01-08 22:16:30,489 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 53 [2025-01-08 22:16:30,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:16:30,489 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2025-01-08 22:16:30,490 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.68) internal successors, (42), 25 states have internal predecessors, (42), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2025-01-08 22:16:30,490 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2025-01-08 22:16:30,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2025-01-08 22:16:30,491 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:16:30,491 INFO L218 NwaCegarLoop]: trace histogram [22, 18, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:16:30,496 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-01-08 22:16:30,691 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 [2025-01-08 22:16:30,692 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:16:30,692 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:16:30,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1967540723, now seen corresponding path program 5 times [2025-01-08 22:16:30,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:16:30,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980871394] [2025-01-08 22:16:30,693 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-08 22:16:30,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:16:30,707 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 65 statements into 12 equivalence classes. [2025-01-08 22:16:30,777 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) and asserted 54 of 65 statements. [2025-01-08 22:16:30,777 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2025-01-08 22:16:30,777 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:16:30,826 INFO L134 CoverageAnalysis]: Checked inductivity of 473 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 472 trivial. 0 not checked. [2025-01-08 22:16:30,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:16:30,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980871394] [2025-01-08 22:16:30,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980871394] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:16:30,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [446418285] [2025-01-08 22:16:30,827 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-08 22:16:30,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:16:30,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:16:30,829 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:16:30,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-01-08 22:16:30,884 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 65 statements into 12 equivalence classes. [2025-01-08 22:16:31,240 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) and asserted 54 of 65 statements. [2025-01-08 22:16:31,240 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2025-01-08 22:16:31,240 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:16:31,243 INFO L256 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-08 22:16:31,245 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:16:31,250 INFO L134 CoverageAnalysis]: Checked inductivity of 473 backedges. 104 proven. 1 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked. [2025-01-08 22:16:31,250 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:16:31,270 INFO L134 CoverageAnalysis]: Checked inductivity of 473 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 472 trivial. 0 not checked. [2025-01-08 22:16:31,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [446418285] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:16:31,270 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:16:31,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2025-01-08 22:16:31,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135972972] [2025-01-08 22:16:31,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:16:31,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-08 22:16:31,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:16:31,271 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-08 22:16:31,271 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-01-08 22:16:31,271 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-01-08 22:16:31,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:16:31,288 INFO L93 Difference]: Finished difference Result 64 states and 71 transitions. [2025-01-08 22:16:31,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-08 22:16:31,289 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 65 [2025-01-08 22:16:31,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:16:31,289 INFO L225 Difference]: With dead ends: 64 [2025-01-08 22:16:31,289 INFO L226 Difference]: Without dead ends: 49 [2025-01-08 22:16:31,289 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-01-08 22:16:31,290 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:16:31,290 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 37 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:16:31,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2025-01-08 22:16:31,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2025-01-08 22:16:31,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 44 states have (on average 1.0681818181818181) internal successors, (47), 44 states have internal predecessors, (47), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-08 22:16:31,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2025-01-08 22:16:31,294 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 65 [2025-01-08 22:16:31,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:16:31,294 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2025-01-08 22:16:31,294 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-01-08 22:16:31,294 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2025-01-08 22:16:31,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-01-08 22:16:31,295 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:16:31,295 INFO L218 NwaCegarLoop]: trace histogram [22, 18, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:16:31,303 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-01-08 22:16:31,495 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 [2025-01-08 22:16:31,495 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:16:31,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:16:31,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1178644153, now seen corresponding path program 6 times [2025-01-08 22:16:31,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:16:31,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347734618] [2025-01-08 22:16:31,496 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-08 22:16:31,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:16:31,512 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 68 statements into 12 equivalence classes. [2025-01-08 22:16:31,548 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 44 of 68 statements. [2025-01-08 22:16:31,548 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2025-01-08 22:16:31,548 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:16:31,682 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 102 proven. 21 refuted. 0 times theorem prover too weak. 359 trivial. 0 not checked. [2025-01-08 22:16:31,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:16:31,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347734618] [2025-01-08 22:16:31,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347734618] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:16:31,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1775012320] [2025-01-08 22:16:31,683 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-08 22:16:31,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:16:31,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:16:31,685 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:16:31,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-01-08 22:16:31,749 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 68 statements into 12 equivalence classes. [2025-01-08 22:16:31,874 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 44 of 68 statements. [2025-01-08 22:16:31,875 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2025-01-08 22:16:31,875 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:16:31,876 INFO L256 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-01-08 22:16:31,878 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:16:31,928 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 126 proven. 10 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2025-01-08 22:16:31,928 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:16:32,007 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 472 trivial. 0 not checked. [2025-01-08 22:16:32,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1775012320] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:16:32,008 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:16:32,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 7] total 20 [2025-01-08 22:16:32,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135726863] [2025-01-08 22:16:32,008 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:16:32,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-01-08 22:16:32,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:16:32,009 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-01-08 22:16:32,009 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2025-01-08 22:16:32,009 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand has 20 states, 20 states have (on average 2.05) internal successors, (41), 20 states have internal predecessors, (41), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-08 22:16:32,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:16:32,053 INFO L93 Difference]: Finished difference Result 79 states and 95 transitions. [2025-01-08 22:16:32,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-01-08 22:16:32,054 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.05) internal successors, (41), 20 states have internal predecessors, (41), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 68 [2025-01-08 22:16:32,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:16:32,055 INFO L225 Difference]: With dead ends: 79 [2025-01-08 22:16:32,055 INFO L226 Difference]: Without dead ends: 56 [2025-01-08 22:16:32,055 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2025-01-08 22:16:32,056 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:16:32,056 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 119 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:16:32,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2025-01-08 22:16:32,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2025-01-08 22:16:32,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 51 states have (on average 1.0588235294117647) internal successors, (54), 51 states have internal predecessors, (54), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-08 22:16:32,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2025-01-08 22:16:32,064 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 68 [2025-01-08 22:16:32,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:16:32,065 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2025-01-08 22:16:32,065 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.05) internal successors, (41), 20 states have internal predecessors, (41), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-08 22:16:32,065 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2025-01-08 22:16:32,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2025-01-08 22:16:32,066 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:16:32,066 INFO L218 NwaCegarLoop]: trace histogram [22, 21, 10, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:16:32,074 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-01-08 22:16:32,267 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 [2025-01-08 22:16:32,267 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:16:32,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:16:32,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1368943150, now seen corresponding path program 7 times [2025-01-08 22:16:32,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:16:32,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705860420] [2025-01-08 22:16:32,267 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-08 22:16:32,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:16:32,285 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 77 statements into 1 equivalence classes. [2025-01-08 22:16:32,318 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 77 of 77 statements. [2025-01-08 22:16:32,318 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:16:32,318 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:16:32,945 INFO L134 CoverageAnalysis]: Checked inductivity of 593 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked. [2025-01-08 22:16:32,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:16:32,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705860420] [2025-01-08 22:16:32,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705860420] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:16:32,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262439836] [2025-01-08 22:16:32,946 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-08 22:16:32,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:16:32,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:16:32,950 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:16:32,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-01-08 22:16:33,039 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 77 statements into 1 equivalence classes. [2025-01-08 22:16:33,094 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 77 of 77 statements. [2025-01-08 22:16:33,094 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:16:33,094 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:16:33,096 INFO L256 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-01-08 22:16:33,099 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:16:33,156 INFO L134 CoverageAnalysis]: Checked inductivity of 593 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked. [2025-01-08 22:16:33,156 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:16:33,792 INFO L134 CoverageAnalysis]: Checked inductivity of 593 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked. [2025-01-08 22:16:33,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [262439836] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:16:33,792 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:16:33,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 43 [2025-01-08 22:16:33,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722316880] [2025-01-08 22:16:33,793 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:16:33,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2025-01-08 22:16:33,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:16:33,795 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2025-01-08 22:16:33,796 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2025-01-08 22:16:33,796 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand has 43 states, 43 states have (on average 1.4186046511627908) internal successors, (61), 43 states have internal predecessors, (61), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2025-01-08 22:16:33,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:16:33,844 INFO L93 Difference]: Finished difference Result 105 states and 130 transitions. [2025-01-08 22:16:33,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2025-01-08 22:16:33,852 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 1.4186046511627908) internal successors, (61), 43 states have internal predecessors, (61), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 77 [2025-01-08 22:16:33,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:16:33,853 INFO L225 Difference]: With dead ends: 105 [2025-01-08 22:16:33,853 INFO L226 Difference]: Without dead ends: 74 [2025-01-08 22:16:33,854 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 130 SyntacticMatches, 6 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2025-01-08 22:16:33,854 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:16:33,854 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 92 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:16:33,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2025-01-08 22:16:33,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2025-01-08 22:16:33,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 69 states have (on average 1.0434782608695652) internal successors, (72), 69 states have internal predecessors, (72), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-08 22:16:33,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 78 transitions. [2025-01-08 22:16:33,873 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 78 transitions. Word has length 77 [2025-01-08 22:16:33,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:16:33,873 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 78 transitions. [2025-01-08 22:16:33,873 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 1.4186046511627908) internal successors, (61), 43 states have internal predecessors, (61), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2025-01-08 22:16:33,873 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 78 transitions. [2025-01-08 22:16:33,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2025-01-08 22:16:33,874 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:16:33,874 INFO L218 NwaCegarLoop]: trace histogram [40, 21, 10, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:16:33,889 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-01-08 22:16:34,075 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 [2025-01-08 22:16:34,075 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:16:34,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:16:34,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1354755630, now seen corresponding path program 8 times [2025-01-08 22:16:34,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:16:34,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034646916] [2025-01-08 22:16:34,076 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:16:34,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:16:34,116 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 95 statements into 2 equivalence classes. [2025-01-08 22:16:34,150 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 95 of 95 statements. [2025-01-08 22:16:34,150 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:16:34,150 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:16:34,351 INFO L134 CoverageAnalysis]: Checked inductivity of 1160 backedges. 0 proven. 160 refuted. 0 times theorem prover too weak. 1000 trivial. 0 not checked. [2025-01-08 22:16:34,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:16:34,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034646916] [2025-01-08 22:16:34,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034646916] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:16:34,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215312715] [2025-01-08 22:16:34,351 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:16:34,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:16:34,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:16:34,353 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:16:34,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-01-08 22:16:34,448 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 95 statements into 2 equivalence classes. [2025-01-08 22:16:34,506 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 95 of 95 statements. [2025-01-08 22:16:34,506 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:16:34,506 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:16:34,509 INFO L256 TraceCheckSpWp]: Trace formula consists of 658 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-01-08 22:16:34,510 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:16:34,551 INFO L134 CoverageAnalysis]: Checked inductivity of 1160 backedges. 130 proven. 28 refuted. 0 times theorem prover too weak. 1002 trivial. 0 not checked. [2025-01-08 22:16:34,552 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:16:34,680 INFO L134 CoverageAnalysis]: Checked inductivity of 1160 backedges. 0 proven. 160 refuted. 0 times theorem prover too weak. 1000 trivial. 0 not checked. [2025-01-08 22:16:34,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1215312715] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:16:34,681 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:16:34,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 19 [2025-01-08 22:16:34,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425264415] [2025-01-08 22:16:34,681 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:16:34,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-01-08 22:16:34,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:16:34,681 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-01-08 22:16:34,682 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2025-01-08 22:16:34,682 INFO L87 Difference]: Start difference. First operand 74 states and 78 transitions. Second operand has 19 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 19 states have internal predecessors, (39), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-08 22:16:34,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:16:34,701 INFO L93 Difference]: Finished difference Result 113 states and 131 transitions. [2025-01-08 22:16:34,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-01-08 22:16:34,701 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 19 states have internal predecessors, (39), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 95 [2025-01-08 22:16:34,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:16:34,703 INFO L225 Difference]: With dead ends: 113 [2025-01-08 22:16:34,703 INFO L226 Difference]: Without dead ends: 83 [2025-01-08 22:16:34,704 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2025-01-08 22:16:34,705 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:16:34,705 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 56 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:16:34,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2025-01-08 22:16:34,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2025-01-08 22:16:34,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 78 states have (on average 1.0384615384615385) internal successors, (81), 78 states have internal predecessors, (81), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-08 22:16:34,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2025-01-08 22:16:34,713 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 95 [2025-01-08 22:16:34,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:16:34,713 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2025-01-08 22:16:34,713 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 19 states have internal predecessors, (39), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-08 22:16:34,713 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2025-01-08 22:16:34,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2025-01-08 22:16:34,714 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:16:34,714 INFO L218 NwaCegarLoop]: trace histogram [48, 40, 10, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:16:34,720 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 [2025-01-08 22:16:34,914 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 [2025-01-08 22:16:34,915 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:16:34,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:16:34,915 INFO L85 PathProgramCache]: Analyzing trace with hash -440528551, now seen corresponding path program 9 times [2025-01-08 22:16:34,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:16:34,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092165466] [2025-01-08 22:16:34,915 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:16:34,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:16:34,944 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 122 statements into 21 equivalence classes. [2025-01-08 22:16:35,002 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) and asserted 62 of 122 statements. [2025-01-08 22:16:35,002 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2025-01-08 22:16:35,002 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:16:35,185 INFO L134 CoverageAnalysis]: Checked inductivity of 2159 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2104 trivial. 0 not checked. [2025-01-08 22:16:35,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:16:35,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092165466] [2025-01-08 22:16:35,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092165466] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:16:35,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716559014] [2025-01-08 22:16:35,186 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:16:35,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:16:35,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:16:35,192 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:16:35,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-01-08 22:16:35,289 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 122 statements into 21 equivalence classes. [2025-01-08 22:16:35,427 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) and asserted 62 of 122 statements. [2025-01-08 22:16:35,427 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2025-01-08 22:16:35,427 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:16:35,430 INFO L256 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-01-08 22:16:35,432 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:16:35,458 INFO L134 CoverageAnalysis]: Checked inductivity of 2159 backedges. 584 proven. 55 refuted. 0 times theorem prover too weak. 1520 trivial. 0 not checked. [2025-01-08 22:16:35,458 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:16:35,646 INFO L134 CoverageAnalysis]: Checked inductivity of 2159 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2104 trivial. 0 not checked. [2025-01-08 22:16:35,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716559014] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:16:35,647 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:16:35,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2025-01-08 22:16:35,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771769656] [2025-01-08 22:16:35,647 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:16:35,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-01-08 22:16:35,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:16:35,648 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-01-08 22:16:35,648 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2025-01-08 22:16:35,648 INFO L87 Difference]: Start difference. First operand 83 states and 87 transitions. Second operand has 25 states, 25 states have (on average 1.68) internal successors, (42), 25 states have internal predecessors, (42), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-01-08 22:16:35,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:16:35,678 INFO L93 Difference]: Finished difference Result 120 states and 136 transitions. [2025-01-08 22:16:35,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-01-08 22:16:35,678 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.68) internal successors, (42), 25 states have internal predecessors, (42), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 122 [2025-01-08 22:16:35,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:16:35,679 INFO L225 Difference]: With dead ends: 120 [2025-01-08 22:16:35,679 INFO L226 Difference]: Without dead ends: 95 [2025-01-08 22:16:35,679 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2025-01-08 22:16:35,680 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:16:35,680 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 54 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:16:35,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2025-01-08 22:16:35,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2025-01-08 22:16:35,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 90 states have (on average 1.0333333333333334) internal successors, (93), 90 states have internal predecessors, (93), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-08 22:16:35,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 99 transitions. [2025-01-08 22:16:35,685 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 99 transitions. Word has length 122 [2025-01-08 22:16:35,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:16:35,685 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 99 transitions. [2025-01-08 22:16:35,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.68) internal successors, (42), 25 states have internal predecessors, (42), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-01-08 22:16:35,686 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 99 transitions. [2025-01-08 22:16:35,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2025-01-08 22:16:35,686 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:16:35,686 INFO L218 NwaCegarLoop]: trace histogram [48, 40, 22, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:16:35,694 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-01-08 22:16:35,887 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 [2025-01-08 22:16:35,887 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:16:35,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:16:35,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1563038503, now seen corresponding path program 10 times [2025-01-08 22:16:35,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:16:35,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899423938] [2025-01-08 22:16:35,888 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:16:35,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:16:35,910 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 134 statements into 2 equivalence classes. [2025-01-08 22:16:35,931 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 134 of 134 statements. [2025-01-08 22:16:35,931 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-08 22:16:35,931 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:16:36,300 INFO L134 CoverageAnalysis]: Checked inductivity of 2357 backedges. 0 proven. 718 refuted. 0 times theorem prover too weak. 1639 trivial. 0 not checked. [2025-01-08 22:16:36,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:16:36,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899423938] [2025-01-08 22:16:36,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899423938] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:16:36,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1073277196] [2025-01-08 22:16:36,301 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:16:36,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:16:36,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:16:36,303 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:16:36,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-01-08 22:16:36,411 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 134 statements into 2 equivalence classes. [2025-01-08 22:16:36,486 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 134 of 134 statements. [2025-01-08 22:16:36,487 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-08 22:16:36,487 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:16:36,489 INFO L256 TraceCheckSpWp]: Trace formula consists of 877 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-01-08 22:16:36,492 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:16:36,514 INFO L134 CoverageAnalysis]: Checked inductivity of 2357 backedges. 580 proven. 136 refuted. 0 times theorem prover too weak. 1641 trivial. 0 not checked. [2025-01-08 22:16:36,514 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:16:36,843 INFO L134 CoverageAnalysis]: Checked inductivity of 2357 backedges. 0 proven. 718 refuted. 0 times theorem prover too weak. 1639 trivial. 0 not checked. [2025-01-08 22:16:36,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1073277196] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:16:36,843 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:16:36,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 36 [2025-01-08 22:16:36,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072995431] [2025-01-08 22:16:36,844 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:16:36,844 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2025-01-08 22:16:36,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:16:36,845 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2025-01-08 22:16:36,845 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2025-01-08 22:16:36,845 INFO L87 Difference]: Start difference. First operand 95 states and 99 transitions. Second operand has 36 states, 36 states have (on average 1.5277777777777777) internal successors, (55), 36 states have internal predecessors, (55), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-08 22:16:36,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:16:36,874 INFO L93 Difference]: Finished difference Result 164 states and 191 transitions. [2025-01-08 22:16:36,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2025-01-08 22:16:36,875 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.5277777777777777) internal successors, (55), 36 states have internal predecessors, (55), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2025-01-08 22:16:36,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:16:36,875 INFO L225 Difference]: With dead ends: 164 [2025-01-08 22:16:36,876 INFO L226 Difference]: Without dead ends: 113 [2025-01-08 22:16:36,876 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2025-01-08 22:16:36,877 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:16:36,877 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 110 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:16:36,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2025-01-08 22:16:36,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2025-01-08 22:16:36,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 108 states have (on average 1.0277777777777777) internal successors, (111), 108 states have internal predecessors, (111), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-08 22:16:36,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 117 transitions. [2025-01-08 22:16:36,886 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 117 transitions. Word has length 134 [2025-01-08 22:16:36,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:16:36,887 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 117 transitions. [2025-01-08 22:16:36,887 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.5277777777777777) internal successors, (55), 36 states have internal predecessors, (55), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-08 22:16:36,887 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 117 transitions. [2025-01-08 22:16:36,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2025-01-08 22:16:36,888 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:16:36,888 INFO L218 NwaCegarLoop]: trace histogram [102, 40, 22, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:16:36,896 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 [2025-01-08 22:16:37,088 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 [2025-01-08 22:16:37,089 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:16:37,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:16:37,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1197288647, now seen corresponding path program 11 times [2025-01-08 22:16:37,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:16:37,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819335722] [2025-01-08 22:16:37,089 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-08 22:16:37,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:16:37,115 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 188 statements into 37 equivalence classes. [2025-01-08 22:16:38,204 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) and asserted 177 of 188 statements. [2025-01-08 22:16:38,204 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2025-01-08 22:16:38,204 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:16:39,391 INFO L134 CoverageAnalysis]: Checked inductivity of 6542 backedges. 1227 proven. 1822 refuted. 0 times theorem prover too weak. 3493 trivial. 0 not checked. [2025-01-08 22:16:39,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:16:39,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819335722] [2025-01-08 22:16:39,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819335722] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:16:39,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846240062] [2025-01-08 22:16:39,391 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-08 22:16:39,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:16:39,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:16:39,393 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:16:39,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-01-08 22:16:39,531 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 188 statements into 37 equivalence classes.