./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-59.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-59.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 60abcfb910222ed2fbb6950de4d87076e559bee1f898e234a2e9cc0109e44a67 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 10:16:57,866 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 10:16:57,925 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-09 10:16:57,930 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 10:16:57,931 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 10:16:57,955 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 10:16:57,957 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 10:16:57,957 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 10:16:57,958 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 10:16:57,958 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 10:16:57,959 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 10:16:57,959 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 10:16:57,959 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 10:16:57,959 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 10:16:57,959 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 10:16:57,960 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 10:16:57,960 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 10:16:57,960 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 10:16:57,960 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 10:16:57,960 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 10:16:57,960 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 10:16:57,960 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 10:16:57,961 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 10:16:57,961 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 10:16:57,961 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 10:16:57,961 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 10:16:57,961 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 10:16:57,961 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 10:16:57,961 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 10:16:57,961 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 10:16:57,961 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 10:16:57,961 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 10:16:57,961 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 10:16:57,962 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 10:16:57,962 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 10:16:57,962 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 10:16:57,962 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 10:16:57,962 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 10:16:57,962 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 10:16:57,962 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 10:16:57,962 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 10:16:57,962 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 10:16:57,963 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 10:16:57,963 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 10:16:57,963 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 10:16:57,963 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 10:16:57,963 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 10:16:57,963 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 10:16:57,963 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 -> 60abcfb910222ed2fbb6950de4d87076e559bee1f898e234a2e9cc0109e44a67 [2025-01-09 10:16:58,190 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 10:16:58,198 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 10:16:58,201 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 10:16:58,202 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 10:16:58,202 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 10:16:58,203 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-59.i [2025-01-09 10:16:59,354 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e0f803322/d7d2c03fe18d45fdbb35895a642cae72/FLAG3a0f1cb97 [2025-01-09 10:16:59,637 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 10:16:59,639 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-59.i [2025-01-09 10:16:59,647 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e0f803322/d7d2c03fe18d45fdbb35895a642cae72/FLAG3a0f1cb97 [2025-01-09 10:16:59,926 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e0f803322/d7d2c03fe18d45fdbb35895a642cae72 [2025-01-09 10:16:59,928 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 10:16:59,929 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 10:16:59,930 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 10:16:59,930 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 10:16:59,933 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 10:16:59,934 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 10:16:59" (1/1) ... [2025-01-09 10:16:59,934 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77a1a9c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:16:59, skipping insertion in model container [2025-01-09 10:16:59,935 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 10:16:59" (1/1) ... [2025-01-09 10:16:59,951 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 10:17:00,058 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/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-59.i[915,928] [2025-01-09 10:17:00,118 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 10:17:00,127 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 10:17:00,136 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/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-59.i[915,928] [2025-01-09 10:17:00,177 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 10:17:00,188 INFO L204 MainTranslator]: Completed translation [2025-01-09 10:17:00,189 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:17:00 WrapperNode [2025-01-09 10:17:00,189 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 10:17:00,190 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 10:17:00,190 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 10:17:00,190 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 10:17:00,195 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:17:00" (1/1) ... [2025-01-09 10:17:00,206 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:17:00" (1/1) ... [2025-01-09 10:17:00,239 INFO L138 Inliner]: procedures = 26, calls = 47, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 239 [2025-01-09 10:17:00,240 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 10:17:00,240 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 10:17:00,240 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 10:17:00,240 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 10:17:00,247 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:17:00" (1/1) ... [2025-01-09 10:17:00,247 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:17:00" (1/1) ... [2025-01-09 10:17:00,254 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:17:00" (1/1) ... [2025-01-09 10:17:00,275 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-01-09 10:17:00,276 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:17:00" (1/1) ... [2025-01-09 10:17:00,276 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:17:00" (1/1) ... [2025-01-09 10:17:00,287 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:17:00" (1/1) ... [2025-01-09 10:17:00,290 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:17:00" (1/1) ... [2025-01-09 10:17:00,293 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:17:00" (1/1) ... [2025-01-09 10:17:00,299 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:17:00" (1/1) ... [2025-01-09 10:17:00,300 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:17:00" (1/1) ... [2025-01-09 10:17:00,304 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 10:17:00,306 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 10:17:00,306 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 10:17:00,306 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 10:17:00,307 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:17:00" (1/1) ... [2025-01-09 10:17:00,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 10:17:00,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 10:17:00,331 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-09 10:17:00,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-09 10:17:00,350 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 10:17:00,350 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-01-09 10:17:00,350 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-01-09 10:17:00,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 10:17:00,350 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 10:17:00,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 10:17:00,407 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 10:17:00,408 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 10:17:00,739 INFO L? ?]: Removed 20 outVars from TransFormulas that were not future-live. [2025-01-09 10:17:00,739 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 10:17:00,749 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 10:17:00,749 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2025-01-09 10:17:00,750 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 10:17:00 BoogieIcfgContainer [2025-01-09 10:17:00,750 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 10:17:00,751 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 10:17:00,752 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 10:17:00,755 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 10:17:00,755 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 10:16:59" (1/3) ... [2025-01-09 10:17:00,755 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7909dfa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 10:17:00, skipping insertion in model container [2025-01-09 10:17:00,756 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:17:00" (2/3) ... [2025-01-09 10:17:00,756 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7909dfa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 10:17:00, skipping insertion in model container [2025-01-09 10:17:00,756 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 10:17:00" (3/3) ... [2025-01-09 10:17:00,757 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-50_file-59.i [2025-01-09 10:17:00,768 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 10:17:00,769 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodesize_ps-cn-50_file-59.i that has 2 procedures, 103 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-01-09 10:17:00,810 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 10:17:00,818 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;@2bdcaad2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 10:17:00,819 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-09 10:17:00,821 INFO L276 IsEmpty]: Start isEmpty. Operand has 103 states, 66 states have (on average 1.4545454545454546) internal successors, (96), 67 states have internal predecessors, (96), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2025-01-09 10:17:00,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2025-01-09 10:17:00,830 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 10:17:00,831 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 10:17:00,831 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 10:17:00,835 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 10:17:00,836 INFO L85 PathProgramCache]: Analyzing trace with hash -780559133, now seen corresponding path program 1 times [2025-01-09 10:17:00,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 10:17:00,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706035423] [2025-01-09 10:17:00,844 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 10:17:00,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 10:17:00,927 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 215 statements into 1 equivalence classes. [2025-01-09 10:17:00,950 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 215 of 215 statements. [2025-01-09 10:17:00,951 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 10:17:00,951 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 10:17:01,146 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 2178 trivial. 0 not checked. [2025-01-09 10:17:01,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 10:17:01,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706035423] [2025-01-09 10:17:01,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706035423] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 10:17:01,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250786942] [2025-01-09 10:17:01,147 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 10:17:01,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 10:17:01,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 10:17:01,152 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 10:17:01,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-01-09 10:17:01,250 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 215 statements into 1 equivalence classes. [2025-01-09 10:17:01,315 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 215 of 215 statements. [2025-01-09 10:17:01,316 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 10:17:01,316 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 10:17:01,319 INFO L256 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-01-09 10:17:01,328 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 10:17:01,352 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 2178 trivial. 0 not checked. [2025-01-09 10:17:01,353 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 10:17:01,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1250786942] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 10:17:01,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 10:17:01,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-01-09 10:17:01,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114414119] [2025-01-09 10:17:01,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 10:17:01,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-01-09 10:17:01,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 10:17:01,376 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-01-09 10:17:01,376 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 10:17:01,378 INFO L87 Difference]: Start difference. First operand has 103 states, 66 states have (on average 1.4545454545454546) internal successors, (96), 67 states have internal predecessors, (96), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Second operand has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 2 states have call successors, (34) [2025-01-09 10:17:01,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 10:17:01,400 INFO L93 Difference]: Finished difference Result 200 states and 357 transitions. [2025-01-09 10:17:01,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-09 10:17:01,402 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 2 states have call successors, (34) Word has length 215 [2025-01-09 10:17:01,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 10:17:01,408 INFO L225 Difference]: With dead ends: 200 [2025-01-09 10:17:01,408 INFO L226 Difference]: Without dead ends: 100 [2025-01-09 10:17:01,410 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 10:17:01,412 INFO L435 NwaCegarLoop]: 158 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 10:17:01,412 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 10:17:01,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2025-01-09 10:17:01,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2025-01-09 10:17:01,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 64 states have (on average 1.40625) internal successors, (90), 64 states have internal predecessors, (90), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2025-01-09 10:17:01,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 158 transitions. [2025-01-09 10:17:01,443 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 158 transitions. Word has length 215 [2025-01-09 10:17:01,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 10:17:01,443 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 158 transitions. [2025-01-09 10:17:01,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 2 states have call successors, (34) [2025-01-09 10:17:01,443 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 158 transitions. [2025-01-09 10:17:01,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2025-01-09 10:17:01,446 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 10:17:01,446 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 10:17:01,453 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-01-09 10:17:01,646 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-01-09 10:17:01,647 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 10:17:01,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 10:17:01,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1453621349, now seen corresponding path program 1 times [2025-01-09 10:17:01,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 10:17:01,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662257882] [2025-01-09 10:17:01,648 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 10:17:01,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 10:17:01,672 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 215 statements into 1 equivalence classes. [2025-01-09 10:17:01,728 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 215 of 215 statements. [2025-01-09 10:17:01,728 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 10:17:01,728 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 10:17:02,131 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2025-01-09 10:17:02,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 10:17:02,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662257882] [2025-01-09 10:17:02,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662257882] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 10:17:02,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 10:17:02,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 10:17:02,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401654825] [2025-01-09 10:17:02,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 10:17:02,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 10:17:02,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 10:17:02,132 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 10:17:02,132 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 10:17:02,133 INFO L87 Difference]: Start difference. First operand 100 states and 158 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2025-01-09 10:17:02,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 10:17:02,331 INFO L93 Difference]: Finished difference Result 295 states and 469 transitions. [2025-01-09 10:17:02,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 10:17:02,332 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 215 [2025-01-09 10:17:02,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 10:17:02,334 INFO L225 Difference]: With dead ends: 295 [2025-01-09 10:17:02,334 INFO L226 Difference]: Without dead ends: 198 [2025-01-09 10:17:02,335 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-01-09 10:17:02,338 INFO L435 NwaCegarLoop]: 155 mSDtfsCounter, 121 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 10:17:02,338 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 458 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 10:17:02,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2025-01-09 10:17:02,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 179. [2025-01-09 10:17:02,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 108 states have (on average 1.3796296296296295) internal successors, (149), 108 states have internal predecessors, (149), 68 states have call successors, (68), 2 states have call predecessors, (68), 2 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2025-01-09 10:17:02,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 285 transitions. [2025-01-09 10:17:02,366 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 285 transitions. Word has length 215 [2025-01-09 10:17:02,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 10:17:02,367 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 285 transitions. [2025-01-09 10:17:02,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2025-01-09 10:17:02,367 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 285 transitions. [2025-01-09 10:17:02,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2025-01-09 10:17:02,373 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 10:17:02,373 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 10:17:02,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-09 10:17:02,373 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 10:17:02,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 10:17:02,374 INFO L85 PathProgramCache]: Analyzing trace with hash -70073828, now seen corresponding path program 1 times [2025-01-09 10:17:02,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 10:17:02,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901054538] [2025-01-09 10:17:02,374 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 10:17:02,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 10:17:02,391 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 216 statements into 1 equivalence classes. [2025-01-09 10:17:02,460 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 216 of 216 statements. [2025-01-09 10:17:02,460 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 10:17:02,460 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 10:17:02,726 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2025-01-09 10:17:02,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 10:17:02,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901054538] [2025-01-09 10:17:02,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901054538] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 10:17:02,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 10:17:02,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 10:17:02,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418240793] [2025-01-09 10:17:02,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 10:17:02,729 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 10:17:02,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 10:17:02,731 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 10:17:02,731 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 10:17:02,731 INFO L87 Difference]: Start difference. First operand 179 states and 285 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2025-01-09 10:17:02,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 10:17:02,953 INFO L93 Difference]: Finished difference Result 383 states and 607 transitions. [2025-01-09 10:17:02,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 10:17:02,954 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 216 [2025-01-09 10:17:02,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 10:17:02,957 INFO L225 Difference]: With dead ends: 383 [2025-01-09 10:17:02,957 INFO L226 Difference]: Without dead ends: 286 [2025-01-09 10:17:02,958 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-01-09 10:17:02,959 INFO L435 NwaCegarLoop]: 160 mSDtfsCounter, 136 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 10:17:02,959 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 456 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 10:17:02,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2025-01-09 10:17:02,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 274. [2025-01-09 10:17:02,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 168 states have (on average 1.3869047619047619) internal successors, (233), 168 states have internal predecessors, (233), 102 states have call successors, (102), 3 states have call predecessors, (102), 3 states have return successors, (102), 102 states have call predecessors, (102), 102 states have call successors, (102) [2025-01-09 10:17:02,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 437 transitions. [2025-01-09 10:17:02,988 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 437 transitions. Word has length 216 [2025-01-09 10:17:02,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 10:17:02,988 INFO L471 AbstractCegarLoop]: Abstraction has 274 states and 437 transitions. [2025-01-09 10:17:02,989 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2025-01-09 10:17:02,989 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 437 transitions. [2025-01-09 10:17:02,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2025-01-09 10:17:02,991 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 10:17:02,991 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 10:17:02,991 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-09 10:17:02,991 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 10:17:02,992 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 10:17:02,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1741454572, now seen corresponding path program 1 times [2025-01-09 10:17:02,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 10:17:02,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111311561] [2025-01-09 10:17:02,994 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 10:17:02,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 10:17:03,018 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 217 statements into 1 equivalence classes. [2025-01-09 10:17:03,162 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 217 of 217 statements. [2025-01-09 10:17:03,162 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 10:17:03,162 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 10:17:03,495 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 36 proven. 63 refuted. 0 times theorem prover too weak. 2145 trivial. 0 not checked. [2025-01-09 10:17:03,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 10:17:03,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111311561] [2025-01-09 10:17:03,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111311561] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 10:17:03,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2138311912] [2025-01-09 10:17:03,495 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 10:17:03,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 10:17:03,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 10:17:03,498 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 10:17:03,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-01-09 10:17:03,571 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 217 statements into 1 equivalence classes. [2025-01-09 10:17:03,642 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 217 of 217 statements. [2025-01-09 10:17:03,642 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 10:17:03,642 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 10:17:03,645 INFO L256 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-01-09 10:17:03,654 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 10:17:04,012 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 1025 proven. 213 refuted. 0 times theorem prover too weak. 1006 trivial. 0 not checked. [2025-01-09 10:17:04,012 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 10:17:04,308 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 36 proven. 63 refuted. 0 times theorem prover too weak. 2145 trivial. 0 not checked. [2025-01-09 10:17:04,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2138311912] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 10:17:04,308 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 10:17:04,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10, 6] total 14 [2025-01-09 10:17:04,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132744821] [2025-01-09 10:17:04,309 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 10:17:04,309 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-01-09 10:17:04,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 10:17:04,310 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-01-09 10:17:04,310 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2025-01-09 10:17:04,311 INFO L87 Difference]: Start difference. First operand 274 states and 437 transitions. Second operand has 14 states, 14 states have (on average 6.928571428571429) internal successors, (97), 14 states have internal predecessors, (97), 3 states have call successors, (55), 3 states have call predecessors, (55), 5 states have return successors, (57), 3 states have call predecessors, (57), 3 states have call successors, (57) [2025-01-09 10:17:05,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 10:17:05,174 INFO L93 Difference]: Finished difference Result 832 states and 1266 transitions. [2025-01-09 10:17:05,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2025-01-09 10:17:05,174 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.928571428571429) internal successors, (97), 14 states have internal predecessors, (97), 3 states have call successors, (55), 3 states have call predecessors, (55), 5 states have return successors, (57), 3 states have call predecessors, (57), 3 states have call successors, (57) Word has length 217 [2025-01-09 10:17:05,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 10:17:05,179 INFO L225 Difference]: With dead ends: 832 [2025-01-09 10:17:05,179 INFO L226 Difference]: Without dead ends: 640 [2025-01-09 10:17:05,181 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 430 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 386 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=395, Invalid=1011, Unknown=0, NotChecked=0, Total=1406 [2025-01-09 10:17:05,181 INFO L435 NwaCegarLoop]: 113 mSDtfsCounter, 467 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 493 SdHoareTripleChecker+Valid, 731 SdHoareTripleChecker+Invalid, 773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-01-09 10:17:05,181 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [493 Valid, 731 Invalid, 773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [228 Valid, 545 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-01-09 10:17:05,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2025-01-09 10:17:05,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 476. [2025-01-09 10:17:05,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 287 states have (on average 1.2578397212543555) internal successors, (361), 289 states have internal predecessors, (361), 170 states have call successors, (170), 18 states have call predecessors, (170), 18 states have return successors, (170), 168 states have call predecessors, (170), 170 states have call successors, (170) [2025-01-09 10:17:05,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 701 transitions. [2025-01-09 10:17:05,234 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 701 transitions. Word has length 217 [2025-01-09 10:17:05,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 10:17:05,234 INFO L471 AbstractCegarLoop]: Abstraction has 476 states and 701 transitions. [2025-01-09 10:17:05,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.928571428571429) internal successors, (97), 14 states have internal predecessors, (97), 3 states have call successors, (55), 3 states have call predecessors, (55), 5 states have return successors, (57), 3 states have call predecessors, (57), 3 states have call successors, (57) [2025-01-09 10:17:05,235 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 701 transitions. [2025-01-09 10:17:05,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2025-01-09 10:17:05,236 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 10:17:05,236 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 10:17:05,244 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-01-09 10:17:05,437 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 [2025-01-09 10:17:05,437 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 10:17:05,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 10:17:05,438 INFO L85 PathProgramCache]: Analyzing trace with hash -778505362, now seen corresponding path program 1 times [2025-01-09 10:17:05,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 10:17:05,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691271273] [2025-01-09 10:17:05,438 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 10:17:05,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 10:17:05,459 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 217 statements into 1 equivalence classes. [2025-01-09 10:17:05,591 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 217 of 217 statements. [2025-01-09 10:17:05,591 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 10:17:05,591 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-09 10:17:05,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [719563768] [2025-01-09 10:17:05,593 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 10:17:05,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 10:17:05,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 10:17:05,596 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 10:17:05,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-01-09 10:17:05,658 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 217 statements into 1 equivalence classes. [2025-01-09 10:17:05,722 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 217 of 217 statements. [2025-01-09 10:17:05,723 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 10:17:05,723 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 10:17:05,731 INFO L256 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-01-09 10:17:05,735 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 10:17:07,645 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 353 proven. 261 refuted. 0 times theorem prover too weak. 1630 trivial. 0 not checked. [2025-01-09 10:17:07,645 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 10:17:19,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 10:17:19,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691271273] [2025-01-09 10:17:19,288 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-09 10:17:19,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [719563768] [2025-01-09 10:17:19,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [719563768] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 10:17:19,288 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-01-09 10:17:19,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2025-01-09 10:17:19,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793643647] [2025-01-09 10:17:19,288 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-01-09 10:17:19,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-01-09 10:17:19,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 10:17:19,289 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-01-09 10:17:19,289 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=594, Unknown=0, NotChecked=0, Total=812 [2025-01-09 10:17:19,289 INFO L87 Difference]: Start difference. First operand 476 states and 701 transitions. Second operand has 18 states, 18 states have (on average 3.4444444444444446) internal successors, (62), 16 states have internal predecessors, (62), 4 states have call successors, (34), 4 states have call predecessors, (34), 5 states have return successors, (34), 4 states have call predecessors, (34), 4 states have call successors, (34) [2025-01-09 10:17:20,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 10:17:20,470 INFO L93 Difference]: Finished difference Result 1140 states and 1648 transitions. [2025-01-09 10:17:20,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2025-01-09 10:17:20,470 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.4444444444444446) internal successors, (62), 16 states have internal predecessors, (62), 4 states have call successors, (34), 4 states have call predecessors, (34), 5 states have return successors, (34), 4 states have call predecessors, (34), 4 states have call successors, (34) Word has length 217 [2025-01-09 10:17:20,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 10:17:20,476 INFO L225 Difference]: With dead ends: 1140 [2025-01-09 10:17:20,476 INFO L226 Difference]: Without dead ends: 741 [2025-01-09 10:17:20,477 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 381 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 423 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=480, Invalid=1242, Unknown=0, NotChecked=0, Total=1722 [2025-01-09 10:17:20,479 INFO L435 NwaCegarLoop]: 103 mSDtfsCounter, 405 mSDsluCounter, 736 mSDsCounter, 0 mSdLazyCounter, 976 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 839 SdHoareTripleChecker+Invalid, 995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 976 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-01-09 10:17:20,479 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [405 Valid, 839 Invalid, 995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 976 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-01-09 10:17:20,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2025-01-09 10:17:20,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 532. [2025-01-09 10:17:20,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 334 states have (on average 1.2574850299401197) internal successors, (420), 336 states have internal predecessors, (420), 170 states have call successors, (170), 27 states have call predecessors, (170), 27 states have return successors, (170), 168 states have call predecessors, (170), 170 states have call successors, (170) [2025-01-09 10:17:20,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 760 transitions. [2025-01-09 10:17:20,535 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 760 transitions. Word has length 217 [2025-01-09 10:17:20,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 10:17:20,535 INFO L471 AbstractCegarLoop]: Abstraction has 532 states and 760 transitions. [2025-01-09 10:17:20,535 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.4444444444444446) internal successors, (62), 16 states have internal predecessors, (62), 4 states have call successors, (34), 4 states have call predecessors, (34), 5 states have return successors, (34), 4 states have call predecessors, (34), 4 states have call successors, (34) [2025-01-09 10:17:20,536 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 760 transitions. [2025-01-09 10:17:20,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2025-01-09 10:17:20,537 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 10:17:20,537 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 10:17:20,545 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-01-09 10:17:20,738 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 [2025-01-09 10:17:20,738 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 10:17:20,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 10:17:20,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1483289134, now seen corresponding path program 1 times [2025-01-09 10:17:20,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 10:17:20,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931814818] [2025-01-09 10:17:20,739 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 10:17:20,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 10:17:20,748 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 217 statements into 1 equivalence classes. [2025-01-09 10:17:20,826 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 217 of 217 statements. [2025-01-09 10:17:20,826 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 10:17:20,826 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-09 10:17:20,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1305297220] [2025-01-09 10:17:20,829 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 10:17:20,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 10:17:20,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 10:17:20,833 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 10:17:20,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-01-09 10:17:20,894 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 217 statements into 1 equivalence classes. [2025-01-09 10:17:20,997 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 217 of 217 statements. [2025-01-09 10:17:20,997 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 10:17:20,997 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 10:17:21,003 INFO L256 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 38 conjuncts are in the unsatisfiable core [2025-01-09 10:17:21,007 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 10:17:22,841 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 429 proven. 405 refuted. 0 times theorem prover too weak. 1410 trivial. 0 not checked. [2025-01-09 10:17:22,842 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 10:17:47,250 WARN L286 SmtUtils]: Spent 8.31s on a formula simplification that was a NOOP. DAG size: 49 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)