./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-programs/partial_mod_count_1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-programs/partial_mod_count_1.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a899e425fabfbfedb683b8dde873d61190b064645b1f5edf26c70c4b83dfe4a2 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-08 22:20:14,029 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-08 22:20:14,074 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-08 22:20:14,080 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-08 22:20:14,081 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-08 22:20:14,098 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-08 22:20:14,100 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-08 22:20:14,100 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-08 22:20:14,100 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-08 22:20:14,101 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-08 22:20:14,101 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-08 22:20:14,101 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-08 22:20:14,102 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-08 22:20:14,102 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-08 22:20:14,102 INFO L153 SettingsManager]: * Use SBE=true [2025-01-08 22:20:14,102 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-08 22:20:14,102 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-08 22:20:14,102 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-08 22:20:14,102 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-08 22:20:14,103 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-08 22:20:14,103 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-08 22:20:14,103 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-08 22:20:14,103 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-08 22:20:14,103 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-08 22:20:14,103 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-08 22:20:14,103 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-08 22:20:14,103 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-08 22:20:14,103 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-08 22:20:14,103 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-08 22:20:14,103 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-08 22:20:14,103 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-08 22:20:14,104 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-08 22:20:14,104 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-08 22:20:14,104 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-08 22:20:14,104 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-08 22:20:14,104 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-08 22:20:14,104 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-08 22:20:14,104 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-08 22:20:14,104 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-08 22:20:14,105 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-08 22:20:14,105 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-08 22:20:14,105 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-08 22:20:14,105 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-08 22:20:14,105 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-08 22:20:14,105 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-08 22:20:14,105 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-08 22:20:14,105 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-08 22:20:14,105 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-08 22:20:14,105 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 -> a899e425fabfbfedb683b8dde873d61190b064645b1f5edf26c70c4b83dfe4a2 [2025-01-08 22:20:14,324 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-08 22:20:14,329 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-08 22:20:14,331 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-08 22:20:14,332 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-08 22:20:14,332 INFO L274 PluginConnector]: CDTParser initialized [2025-01-08 22:20:14,333 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-programs/partial_mod_count_1.c [2025-01-08 22:20:15,420 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/03d9cc60d/e0e430ca2ee34d93804bdec593eb4fef/FLAG65331d79a [2025-01-08 22:20:15,618 INFO L384 CDTParser]: Found 1 translation units. [2025-01-08 22:20:15,618 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/array-programs/partial_mod_count_1.c [2025-01-08 22:20:15,623 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/03d9cc60d/e0e430ca2ee34d93804bdec593eb4fef/FLAG65331d79a [2025-01-08 22:20:15,990 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/03d9cc60d/e0e430ca2ee34d93804bdec593eb4fef [2025-01-08 22:20:15,991 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-08 22:20:15,992 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-08 22:20:15,993 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-08 22:20:15,993 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-08 22:20:15,996 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-08 22:20:15,997 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.01 10:20:15" (1/1) ... [2025-01-08 22:20:15,997 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17ef315d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:20:15, skipping insertion in model container [2025-01-08 22:20:15,997 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.01 10:20:15" (1/1) ... [2025-01-08 22:20:16,009 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-08 22:20:16,096 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/array-programs/partial_mod_count_1.c[323,336] [2025-01-08 22:20:16,106 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-08 22:20:16,112 INFO L200 MainTranslator]: Completed pre-run [2025-01-08 22:20:16,119 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/array-programs/partial_mod_count_1.c[323,336] [2025-01-08 22:20:16,122 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-08 22:20:16,132 INFO L204 MainTranslator]: Completed translation [2025-01-08 22:20:16,132 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:20:16 WrapperNode [2025-01-08 22:20:16,132 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-08 22:20:16,133 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-08 22:20:16,133 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-08 22:20:16,133 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-08 22:20:16,137 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:20:16" (1/1) ... [2025-01-08 22:20:16,142 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:20:16" (1/1) ... [2025-01-08 22:20:16,154 INFO L138 Inliner]: procedures = 13, calls = 14, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 45 [2025-01-08 22:20:16,156 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-08 22:20:16,157 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-08 22:20:16,157 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-08 22:20:16,158 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-08 22:20:16,164 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:20:16" (1/1) ... [2025-01-08 22:20:16,165 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:20:16" (1/1) ... [2025-01-08 22:20:16,169 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:20:16" (1/1) ... [2025-01-08 22:20:16,183 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [2, 3]. 60 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2025-01-08 22:20:16,186 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:20:16" (1/1) ... [2025-01-08 22:20:16,186 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:20:16" (1/1) ... [2025-01-08 22:20:16,189 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:20:16" (1/1) ... [2025-01-08 22:20:16,190 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:20:16" (1/1) ... [2025-01-08 22:20:16,193 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:20:16" (1/1) ... [2025-01-08 22:20:16,196 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:20:16" (1/1) ... [2025-01-08 22:20:16,196 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:20:16" (1/1) ... [2025-01-08 22:20:16,198 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-08 22:20:16,200 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-08 22:20:16,200 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-08 22:20:16,200 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-08 22:20:16,201 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:20:16" (1/1) ... [2025-01-08 22:20:16,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-08 22:20:16,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:20:16,226 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 22:20:16,229 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 22:20:16,248 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-08 22:20:16,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-08 22:20:16,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-01-08 22:20:16,248 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-01-08 22:20:16,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-01-08 22:20:16,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-01-08 22:20:16,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-08 22:20:16,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-08 22:20:16,249 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-01-08 22:20:16,249 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-01-08 22:20:16,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-01-08 22:20:16,300 INFO L234 CfgBuilder]: Building ICFG [2025-01-08 22:20:16,301 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-08 22:20:16,415 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2025-01-08 22:20:16,415 INFO L283 CfgBuilder]: Performing block encoding [2025-01-08 22:20:16,423 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-08 22:20:16,423 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-08 22:20:16,423 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.01 10:20:16 BoogieIcfgContainer [2025-01-08 22:20:16,423 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-08 22:20:16,425 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-08 22:20:16,425 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-08 22:20:16,428 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-08 22:20:16,428 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.01 10:20:15" (1/3) ... [2025-01-08 22:20:16,429 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@193c8e43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.01 10:20:16, skipping insertion in model container [2025-01-08 22:20:16,429 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:20:16" (2/3) ... [2025-01-08 22:20:16,429 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@193c8e43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.01 10:20:16, skipping insertion in model container [2025-01-08 22:20:16,429 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.01 10:20:16" (3/3) ... [2025-01-08 22:20:16,431 INFO L128 eAbstractionObserver]: Analyzing ICFG partial_mod_count_1.c [2025-01-08 22:20:16,441 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-08 22:20:16,442 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG partial_mod_count_1.c that has 1 procedures, 15 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2025-01-08 22:20:16,481 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-08 22:20:16,490 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;@5f21692a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-08 22:20:16,491 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-08 22:20:16,494 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:20:16,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-01-08 22:20:16,498 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:20:16,499 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:20:16,499 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:20:16,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:20:16,505 INFO L85 PathProgramCache]: Analyzing trace with hash 415218381, now seen corresponding path program 1 times [2025-01-08 22:20:16,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:20:16,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966495835] [2025-01-08 22:20:16,514 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:20:16,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:20:16,560 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-01-08 22:20:16,571 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-01-08 22:20:16,571 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:20:16,571 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:20:16,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:20:16,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:20:16,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966495835] [2025-01-08 22:20:16,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966495835] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-08 22:20:16,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-08 22:20:16,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-08 22:20:16,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238586519] [2025-01-08 22:20:16,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-08 22:20:16,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-08 22:20:16,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:20:16,687 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-08 22:20:16,687 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-01-08 22:20:16,688 INFO L87 Difference]: Start difference. First operand has 15 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:20:16,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:20:16,736 INFO L93 Difference]: Finished difference Result 38 states and 51 transitions. [2025-01-08 22:20:16,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-08 22:20:16,738 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2025-01-08 22:20:16,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:20:16,742 INFO L225 Difference]: With dead ends: 38 [2025-01-08 22:20:16,742 INFO L226 Difference]: Without dead ends: 22 [2025-01-08 22:20:16,745 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-01-08 22:20:16,746 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 36 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:20:16,747 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 14 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:20:16,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2025-01-08 22:20:16,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 14. [2025-01-08 22:20:16,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:20:16,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2025-01-08 22:20:16,771 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 17 transitions. Word has length 8 [2025-01-08 22:20:16,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:20:16,771 INFO L471 AbstractCegarLoop]: Abstraction has 14 states and 17 transitions. [2025-01-08 22:20:16,772 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:20:16,772 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 17 transitions. [2025-01-08 22:20:16,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-01-08 22:20:16,772 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:20:16,772 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:20:16,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-08 22:20:16,772 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:20:16,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:20:16,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1427380529, now seen corresponding path program 1 times [2025-01-08 22:20:16,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:20:16,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603740420] [2025-01-08 22:20:16,773 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:20:16,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:20:16,780 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-01-08 22:20:16,794 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-01-08 22:20:16,794 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:20:16,795 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:20:16,878 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:20:16,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:20:16,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603740420] [2025-01-08 22:20:16,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603740420] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:20:16,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253420177] [2025-01-08 22:20:16,878 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:20:16,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:20:16,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:20:16,881 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 22:20:16,882 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 22:20:16,916 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-01-08 22:20:16,928 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-01-08 22:20:16,928 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:20:16,928 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:20:16,930 INFO L256 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-08 22:20:16,932 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:20:16,990 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:20:16,990 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:20:17,027 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:20:17,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [253420177] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:20:17,028 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:20:17,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2025-01-08 22:20:17,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811823265] [2025-01-08 22:20:17,028 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:20:17,029 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-01-08 22:20:17,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:20:17,029 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-01-08 22:20:17,029 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2025-01-08 22:20:17,029 INFO L87 Difference]: Start difference. First operand 14 states and 17 transitions. Second operand has 10 states, 10 states have (on average 2.2) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:20:17,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:20:17,135 INFO L93 Difference]: Finished difference Result 54 states and 68 transitions. [2025-01-08 22:20:17,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-08 22:20:17,136 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2025-01-08 22:20:17,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:20:17,137 INFO L225 Difference]: With dead ends: 54 [2025-01-08 22:20:17,137 INFO L226 Difference]: Without dead ends: 44 [2025-01-08 22:20:17,137 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2025-01-08 22:20:17,138 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 105 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:20:17,139 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 31 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:20:17,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2025-01-08 22:20:17,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 22. [2025-01-08 22:20:17,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:20:17,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2025-01-08 22:20:17,147 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 11 [2025-01-08 22:20:17,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:20:17,147 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2025-01-08 22:20:17,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:20:17,147 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2025-01-08 22:20:17,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-01-08 22:20:17,147 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:20:17,147 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:20:17,155 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 22:20:17,348 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 22:20:17,348 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:20:17,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:20:17,349 INFO L85 PathProgramCache]: Analyzing trace with hash -667599603, now seen corresponding path program 1 times [2025-01-08 22:20:17,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:20:17,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870869885] [2025-01-08 22:20:17,349 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:20:17,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:20:17,357 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-01-08 22:20:17,377 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-01-08 22:20:17,378 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:20:17,378 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:20:17,683 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-01-08 22:20:17,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:20:17,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870869885] [2025-01-08 22:20:17,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870869885] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-08 22:20:17,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-08 22:20:17,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-08 22:20:17,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777820761] [2025-01-08 22:20:17,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-08 22:20:17,683 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-08 22:20:17,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:20:17,684 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-08 22:20:17,684 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-01-08 22:20:17,684 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:20:17,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:20:17,759 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2025-01-08 22:20:17,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-08 22:20:17,759 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2025-01-08 22:20:17,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:20:17,759 INFO L225 Difference]: With dead ends: 34 [2025-01-08 22:20:17,759 INFO L226 Difference]: Without dead ends: 32 [2025-01-08 22:20:17,760 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2025-01-08 22:20:17,760 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 26 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:20:17,760 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 18 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:20:17,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2025-01-08 22:20:17,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2025-01-08 22:20:17,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 31 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:20:17,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2025-01-08 22:20:17,769 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 20 [2025-01-08 22:20:17,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:20:17,769 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2025-01-08 22:20:17,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:20:17,769 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2025-01-08 22:20:17,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-01-08 22:20:17,770 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:20:17,770 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:20:17,770 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-08 22:20:17,771 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:20:17,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:20:17,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1087728236, now seen corresponding path program 1 times [2025-01-08 22:20:17,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:20:17,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849760199] [2025-01-08 22:20:17,772 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:20:17,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:20:17,782 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-01-08 22:20:17,795 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-01-08 22:20:17,795 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:20:17,795 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:20:18,020 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-08 22:20:18,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:20:18,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849760199] [2025-01-08 22:20:18,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849760199] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:20:18,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2027514365] [2025-01-08 22:20:18,020 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:20:18,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:20:18,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:20:18,023 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 22:20:18,025 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 22:20:18,053 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-01-08 22:20:18,067 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-01-08 22:20:18,068 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:20:18,068 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:20:18,068 INFO L256 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-01-08 22:20:18,069 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:20:18,148 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-08 22:20:18,148 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:20:18,226 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-08 22:20:18,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2027514365] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:20:18,226 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:20:18,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 17 [2025-01-08 22:20:18,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602895282] [2025-01-08 22:20:18,226 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:20:18,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-01-08 22:20:18,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:20:18,227 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-01-08 22:20:18,227 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=190, Unknown=0, NotChecked=0, Total=306 [2025-01-08 22:20:18,227 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand has 18 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 17 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:20:18,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:20:18,407 INFO L93 Difference]: Finished difference Result 219 states and 264 transitions. [2025-01-08 22:20:18,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-01-08 22:20:18,408 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 17 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2025-01-08 22:20:18,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:20:18,410 INFO L225 Difference]: With dead ends: 219 [2025-01-08 22:20:18,410 INFO L226 Difference]: Without dead ends: 197 [2025-01-08 22:20:18,410 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=191, Invalid=315, Unknown=0, NotChecked=0, Total=506 [2025-01-08 22:20:18,411 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 272 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:20:18,411 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 61 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:20:18,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2025-01-08 22:20:18,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 50. [2025-01-08 22:20:18,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.2040816326530612) internal successors, (59), 49 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:20:18,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 59 transitions. [2025-01-08 22:20:18,424 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 59 transitions. Word has length 25 [2025-01-08 22:20:18,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:20:18,424 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 59 transitions. [2025-01-08 22:20:18,424 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 17 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:20:18,424 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 59 transitions. [2025-01-08 22:20:18,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2025-01-08 22:20:18,425 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:20:18,425 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:20:18,430 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 22:20:18,625 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:20:18,625 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:20:18,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:20:18,626 INFO L85 PathProgramCache]: Analyzing trace with hash -85535382, now seen corresponding path program 2 times [2025-01-08 22:20:18,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:20:18,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394937161] [2025-01-08 22:20:18,626 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:20:18,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:20:18,640 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 43 statements into 2 equivalence classes. [2025-01-08 22:20:18,655 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 43 of 43 statements. [2025-01-08 22:20:18,656 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:20:18,656 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:20:19,029 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-01-08 22:20:19,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:20:19,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394937161] [2025-01-08 22:20:19,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394937161] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:20:19,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042424291] [2025-01-08 22:20:19,030 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:20:19,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:20:19,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:20:19,036 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 22:20:19,040 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 22:20:19,080 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 43 statements into 2 equivalence classes. [2025-01-08 22:20:19,102 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 43 of 43 statements. [2025-01-08 22:20:19,102 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:20:19,102 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:20:19,104 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-01-08 22:20:19,105 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:20:19,315 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-08 22:20:19,315 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:20:19,518 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-08 22:20:19,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2042424291] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:20:19,518 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:20:19,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 13, 13] total 29 [2025-01-08 22:20:19,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748895817] [2025-01-08 22:20:19,519 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:20:19,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2025-01-08 22:20:19,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:20:19,519 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2025-01-08 22:20:19,520 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=320, Invalid=550, Unknown=0, NotChecked=0, Total=870 [2025-01-08 22:20:19,520 INFO L87 Difference]: Start difference. First operand 50 states and 59 transitions. Second operand has 30 states, 30 states have (on average 2.933333333333333) internal successors, (88), 29 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:20:22,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:20:22,468 INFO L93 Difference]: Finished difference Result 574 states and 713 transitions. [2025-01-08 22:20:22,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2025-01-08 22:20:22,468 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.933333333333333) internal successors, (88), 29 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2025-01-08 22:20:22,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:20:22,470 INFO L225 Difference]: With dead ends: 574 [2025-01-08 22:20:22,470 INFO L226 Difference]: Without dead ends: 543 [2025-01-08 22:20:22,479 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13191 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=8379, Invalid=20691, Unknown=0, NotChecked=0, Total=29070 [2025-01-08 22:20:22,480 INFO L435 NwaCegarLoop]: 4 mSDtfsCounter, 757 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 757 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-01-08 22:20:22,481 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [757 Valid, 179 Invalid, 569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 489 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-01-08 22:20:22,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2025-01-08 22:20:22,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 91. [2025-01-08 22:20:22,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 90 states have (on average 1.1888888888888889) internal successors, (107), 90 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:20:22,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 107 transitions. [2025-01-08 22:20:22,500 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 107 transitions. Word has length 43 [2025-01-08 22:20:22,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:20:22,501 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 107 transitions. [2025-01-08 22:20:22,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.933333333333333) internal successors, (88), 29 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:20:22,501 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 107 transitions. [2025-01-08 22:20:22,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2025-01-08 22:20:22,502 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:20:22,502 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 11, 11, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1] [2025-01-08 22:20:22,510 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 22:20:22,703 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:20:22,703 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:20:22,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:20:22,704 INFO L85 PathProgramCache]: Analyzing trace with hash -228131217, now seen corresponding path program 3 times [2025-01-08 22:20:22,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:20:22,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294056816] [2025-01-08 22:20:22,704 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:20:22,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:20:22,725 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 84 statements into 23 equivalence classes. [2025-01-08 22:20:22,743 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 24 of 84 statements. [2025-01-08 22:20:22,743 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-01-08 22:20:22,743 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:20:22,928 INFO L134 CoverageAnalysis]: Checked inductivity of 728 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2025-01-08 22:20:22,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:20:22,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294056816] [2025-01-08 22:20:22,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294056816] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:20:22,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [786393813] [2025-01-08 22:20:22,929 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:20:22,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:20:22,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:20:22,931 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 22:20:22,932 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 22:20:22,981 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 84 statements into 23 equivalence classes. [2025-01-08 22:20:23,003 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 24 of 84 statements. [2025-01-08 22:20:23,003 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-01-08 22:20:23,003 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:20:23,004 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-08 22:20:23,006 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:20:23,197 INFO L134 CoverageAnalysis]: Checked inductivity of 728 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2025-01-08 22:20:23,197 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:20:23,970 INFO L134 CoverageAnalysis]: Checked inductivity of 728 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2025-01-08 22:20:23,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [786393813] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:20:23,971 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:20:23,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2025-01-08 22:20:23,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733349468] [2025-01-08 22:20:23,971 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:20:23,972 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-01-08 22:20:23,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:20:23,973 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-01-08 22:20:23,973 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2025-01-08 22:20:23,973 INFO L87 Difference]: Start difference. First operand 91 states and 107 transitions. Second operand has 15 states, 15 states have (on average 3.466666666666667) internal successors, (52), 14 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:20:24,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:20:24,141 INFO L93 Difference]: Finished difference Result 118 states and 143 transitions. [2025-01-08 22:20:24,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-01-08 22:20:24,141 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.466666666666667) internal successors, (52), 14 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2025-01-08 22:20:24,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:20:24,142 INFO L225 Difference]: With dead ends: 118 [2025-01-08 22:20:24,142 INFO L226 Difference]: Without dead ends: 116 [2025-01-08 22:20:24,143 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 159 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=266, Invalid=436, Unknown=0, NotChecked=0, Total=702 [2025-01-08 22:20:24,143 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 113 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:20:24,143 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 36 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:20:24,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2025-01-08 22:20:24,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2025-01-08 22:20:24,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 1.191304347826087) internal successors, (137), 115 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:20:24,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 137 transitions. [2025-01-08 22:20:24,156 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 137 transitions. Word has length 84 [2025-01-08 22:20:24,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:20:24,156 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 137 transitions. [2025-01-08 22:20:24,156 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.466666666666667) internal successors, (52), 14 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:20:24,156 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 137 transitions. [2025-01-08 22:20:24,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2025-01-08 22:20:24,158 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:20:24,158 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 11, 11, 8, 8, 8, 7, 7, 1, 1, 1, 1, 1] [2025-01-08 22:20:24,163 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 22:20:24,358 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2025-01-08 22:20:24,359 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:20:24,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:20:24,359 INFO L85 PathProgramCache]: Analyzing trace with hash -567835510, now seen corresponding path program 4 times [2025-01-08 22:20:24,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:20:24,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005611734] [2025-01-08 22:20:24,359 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:20:24,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:20:24,378 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 109 statements into 2 equivalence classes. [2025-01-08 22:20:24,548 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 109 of 109 statements. [2025-01-08 22:20:24,548 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-08 22:20:24,549 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:20:26,029 INFO L134 CoverageAnalysis]: Checked inductivity of 848 backedges. 0 proven. 693 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2025-01-08 22:20:26,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:20:26,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005611734] [2025-01-08 22:20:26,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005611734] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:20:26,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239770442] [2025-01-08 22:20:26,030 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:20:26,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:20:26,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:20:26,032 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 22:20:26,034 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 22:20:26,085 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 109 statements into 2 equivalence classes. [2025-01-08 22:20:26,388 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 109 of 109 statements. [2025-01-08 22:20:26,388 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-08 22:20:26,388 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:20:26,390 INFO L256 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-01-08 22:20:26,393 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:20:27,068 INFO L134 CoverageAnalysis]: Checked inductivity of 848 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2025-01-08 22:20:27,068 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:20:27,915 INFO L134 CoverageAnalysis]: Checked inductivity of 848 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2025-01-08 22:20:27,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [239770442] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:20:27,916 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:20:27,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 72 [2025-01-08 22:20:27,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949021233] [2025-01-08 22:20:27,916 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:20:27,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2025-01-08 22:20:27,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:20:27,917 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2025-01-08 22:20:27,919 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1640, Invalid=3616, Unknown=0, NotChecked=0, Total=5256 [2025-01-08 22:20:27,919 INFO L87 Difference]: Start difference. First operand 116 states and 137 transitions. Second operand has 73 states, 73 states have (on average 3.0684931506849313) internal successors, (224), 72 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:20:29,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:20:29,664 INFO L93 Difference]: Finished difference Result 2250 states and 2706 transitions. [2025-01-08 22:20:29,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2025-01-08 22:20:29,664 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 3.0684931506849313) internal successors, (224), 72 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2025-01-08 22:20:29,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:20:29,670 INFO L225 Difference]: With dead ends: 2250 [2025-01-08 22:20:29,670 INFO L226 Difference]: Without dead ends: 2171 [2025-01-08 22:20:29,674 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2605 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=3830, Invalid=7942, Unknown=0, NotChecked=0, Total=11772 [2025-01-08 22:20:29,674 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 1593 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 231 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1593 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 231 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-01-08 22:20:29,674 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1593 Valid, 247 Invalid, 623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [231 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-01-08 22:20:29,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2171 states. [2025-01-08 22:20:29,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2171 to 188. [2025-01-08 22:20:29,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 187 states have (on average 1.1818181818181819) internal successors, (221), 187 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:20:29,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 221 transitions. [2025-01-08 22:20:29,701 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 221 transitions. Word has length 109 [2025-01-08 22:20:29,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:20:29,701 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 221 transitions. [2025-01-08 22:20:29,701 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 3.0684931506849313) internal successors, (224), 72 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:20:29,701 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 221 transitions. [2025-01-08 22:20:29,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2025-01-08 22:20:29,702 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:20:29,703 INFO L218 NwaCegarLoop]: trace histogram [46, 46, 23, 23, 8, 8, 8, 7, 7, 1, 1, 1, 1, 1] [2025-01-08 22:20:29,711 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-01-08 22:20:29,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:20:29,903 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:20:29,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:20:29,904 INFO L85 PathProgramCache]: Analyzing trace with hash -595513334, now seen corresponding path program 5 times [2025-01-08 22:20:29,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:20:29,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063610417] [2025-01-08 22:20:29,904 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-08 22:20:29,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:20:29,926 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 181 statements into 47 equivalence classes. [2025-01-08 22:20:31,280 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) and asserted 181 of 181 statements. [2025-01-08 22:20:31,280 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2025-01-08 22:20:31,280 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:20:33,752 INFO L134 CoverageAnalysis]: Checked inductivity of 3284 backedges. 808 proven. 2343 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2025-01-08 22:20:33,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:20:33,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063610417] [2025-01-08 22:20:33,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063610417] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:20:33,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667566639] [2025-01-08 22:20:33,752 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-08 22:20:33,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:20:33,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:20:33,754 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 22:20:33,755 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 22:20:33,828 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 181 statements into 47 equivalence classes.