./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-cn_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_fillercodestructure_filler-pe-cn_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 f9927c34c970864456f4c5388ccaa1ce21141abde04e0eb758df03be2f9ce8de --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 10:41:44,667 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 10:41:44,722 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-09 10:41:44,727 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 10:41:44,727 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 10:41:44,756 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 10:41:44,757 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 10:41:44,757 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 10:41:44,757 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 10:41:44,757 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 10:41:44,758 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 10:41:44,758 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 10:41:44,759 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 10:41:44,759 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 10:41:44,759 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 10:41:44,759 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 10:41:44,759 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 10:41:44,760 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 10:41:44,760 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 10:41:44,760 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 10:41:44,760 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 10:41:44,760 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 10:41:44,760 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 10:41:44,760 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 10:41:44,760 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 10:41:44,760 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 10:41:44,760 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 10:41:44,760 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 10:41:44,760 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 10:41:44,761 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 10:41:44,761 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 10:41:44,761 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 10:41:44,761 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 10:41:44,761 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 10:41:44,761 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 10:41:44,762 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 10:41:44,762 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 10:41:44,762 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 10:41:44,762 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 10:41:44,762 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 10:41:44,762 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 10:41:44,762 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 10:41:44,762 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 10:41:44,762 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 10:41:44,762 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 10:41:44,762 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 10:41:44,762 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 10:41:44,762 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 10:41:44,762 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 -> f9927c34c970864456f4c5388ccaa1ce21141abde04e0eb758df03be2f9ce8de [2025-01-09 10:41:45,022 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 10:41:45,032 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 10:41:45,034 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 10:41:45,035 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 10:41:45,036 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 10:41:45,036 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-cn_file-59.i [2025-01-09 10:41:46,251 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/2fafceeff/53f7efa94b4c4e119561f4d9b738f96f/FLAG81dbf52f1 [2025-01-09 10:41:46,531 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 10:41:46,531 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-cn_file-59.i [2025-01-09 10:41:46,545 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/2fafceeff/53f7efa94b4c4e119561f4d9b738f96f/FLAG81dbf52f1 [2025-01-09 10:41:46,833 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/2fafceeff/53f7efa94b4c4e119561f4d9b738f96f [2025-01-09 10:41:46,838 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 10:41:46,840 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 10:41:46,842 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 10:41:46,843 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 10:41:46,846 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 10:41:46,847 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 10:41:46" (1/1) ... [2025-01-09 10:41:46,847 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7038780b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:41:46, skipping insertion in model container [2025-01-09 10:41:46,848 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 10:41:46" (1/1) ... [2025-01-09 10:41:46,870 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 10:41:46,978 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_fillercodestructure_filler-pe-cn_file-59.i[919,932] [2025-01-09 10:41:47,057 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 10:41:47,072 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 10:41:47,081 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_fillercodestructure_filler-pe-cn_file-59.i[919,932] [2025-01-09 10:41:47,121 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 10:41:47,139 INFO L204 MainTranslator]: Completed translation [2025-01-09 10:41:47,141 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:41:47 WrapperNode [2025-01-09 10:41:47,141 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 10:41:47,142 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 10:41:47,142 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 10:41:47,143 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 10:41:47,148 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:41:47" (1/1) ... [2025-01-09 10:41:47,158 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:41:47" (1/1) ... [2025-01-09 10:41:47,196 INFO L138 Inliner]: procedures = 26, calls = 47, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 239 [2025-01-09 10:41:47,197 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 10:41:47,197 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 10:41:47,197 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 10:41:47,197 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 10:41:47,205 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:41:47" (1/1) ... [2025-01-09 10:41:47,205 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:41:47" (1/1) ... [2025-01-09 10:41:47,212 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:41:47" (1/1) ... [2025-01-09 10:41:47,234 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 10:41:47,235 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:41:47" (1/1) ... [2025-01-09 10:41:47,235 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:41:47" (1/1) ... [2025-01-09 10:41:47,248 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:41:47" (1/1) ... [2025-01-09 10:41:47,249 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:41:47" (1/1) ... [2025-01-09 10:41:47,252 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:41:47" (1/1) ... [2025-01-09 10:41:47,256 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:41:47" (1/1) ... [2025-01-09 10:41:47,260 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:41:47" (1/1) ... [2025-01-09 10:41:47,263 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 10:41:47,266 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 10:41:47,266 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 10:41:47,266 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 10:41:47,267 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:41:47" (1/1) ... [2025-01-09 10:41:47,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 10:41:47,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 10:41:47,293 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 10:41:47,295 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 10:41:47,312 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 10:41:47,312 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-01-09 10:41:47,312 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-01-09 10:41:47,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 10:41:47,313 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 10:41:47,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 10:41:47,372 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 10:41:47,373 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 10:41:47,686 INFO L? ?]: Removed 20 outVars from TransFormulas that were not future-live. [2025-01-09 10:41:47,686 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 10:41:47,694 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 10:41:47,694 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2025-01-09 10:41:47,694 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 10:41:47 BoogieIcfgContainer [2025-01-09 10:41:47,694 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 10:41:47,696 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 10:41:47,696 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 10:41:47,699 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 10:41:47,700 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 10:41:46" (1/3) ... [2025-01-09 10:41:47,700 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e993e07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 10:41:47, skipping insertion in model container [2025-01-09 10:41:47,700 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:41:47" (2/3) ... [2025-01-09 10:41:47,700 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e993e07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 10:41:47, skipping insertion in model container [2025-01-09 10:41:47,701 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 10:41:47" (3/3) ... [2025-01-09 10:41:47,701 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pe-cn_file-59.i [2025-01-09 10:41:47,711 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 10:41:47,714 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodestructure_filler-pe-cn_file-59.i that has 2 procedures, 102 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-01-09 10:41:47,752 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 10:41:47,759 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;@5f7a9ea4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 10:41:47,760 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-09 10:41:47,763 INFO L276 IsEmpty]: Start isEmpty. Operand has 102 states, 65 states have (on average 1.4615384615384615) internal successors, (95), 66 states have internal predecessors, (95), 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 10:41:47,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2025-01-09 10:41:47,772 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 10:41:47,773 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] [2025-01-09 10:41:47,773 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 10:41:47,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 10:41:47,777 INFO L85 PathProgramCache]: Analyzing trace with hash 635253736, now seen corresponding path program 1 times [2025-01-09 10:41:47,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 10:41:47,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546065184] [2025-01-09 10:41:47,783 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 10:41:47,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 10:41:47,867 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 214 statements into 1 equivalence classes. [2025-01-09 10:41:47,884 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 214 of 214 statements. [2025-01-09 10:41:47,884 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 10:41:47,884 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 10:41:48,034 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 10:41:48,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 10:41:48,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546065184] [2025-01-09 10:41:48,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546065184] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 10:41:48,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [362796923] [2025-01-09 10:41:48,036 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 10:41:48,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 10:41:48,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 10:41:48,043 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 10:41:48,044 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 10:41:48,115 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 214 statements into 1 equivalence classes. [2025-01-09 10:41:48,179 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 214 of 214 statements. [2025-01-09 10:41:48,179 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 10:41:48,179 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 10:41:48,182 INFO L256 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-01-09 10:41:48,191 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 10:41:48,223 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 10:41:48,226 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 10:41:48,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [362796923] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 10:41:48,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 10:41:48,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-01-09 10:41:48,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915898236] [2025-01-09 10:41:48,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 10:41:48,232 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-01-09 10:41:48,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 10:41:48,247 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-01-09 10:41:48,247 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 10:41:48,249 INFO L87 Difference]: Start difference. First operand has 102 states, 65 states have (on average 1.4615384615384615) internal successors, (95), 66 states have internal predecessors, (95), 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 24.5) internal successors, (49), 2 states have internal predecessors, (49), 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 10:41:48,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 10:41:48,275 INFO L93 Difference]: Finished difference Result 198 states and 355 transitions. [2025-01-09 10:41:48,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-09 10:41:48,276 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 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 214 [2025-01-09 10:41:48,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 10:41:48,281 INFO L225 Difference]: With dead ends: 198 [2025-01-09 10:41:48,283 INFO L226 Difference]: Without dead ends: 99 [2025-01-09 10:41:48,285 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 215 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 10:41:48,287 INFO L435 NwaCegarLoop]: 157 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, 157 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 10:41:48,287 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 10:41:48,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2025-01-09 10:41:48,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2025-01-09 10:41:48,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 63 states have (on average 1.4126984126984128) internal successors, (89), 63 states have internal predecessors, (89), 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 10:41:48,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 157 transitions. [2025-01-09 10:41:48,327 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 157 transitions. Word has length 214 [2025-01-09 10:41:48,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 10:41:48,327 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 157 transitions. [2025-01-09 10:41:48,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 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 10:41:48,328 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 157 transitions. [2025-01-09 10:41:48,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2025-01-09 10:41:48,330 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 10:41:48,331 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] [2025-01-09 10:41:48,338 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 10:41:48,531 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 10:41:48,532 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 10:41:48,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 10:41:48,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1029184048, now seen corresponding path program 1 times [2025-01-09 10:41:48,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 10:41:48,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962309345] [2025-01-09 10:41:48,533 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 10:41:48,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 10:41:48,550 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 214 statements into 1 equivalence classes. [2025-01-09 10:41:48,591 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 214 of 214 statements. [2025-01-09 10:41:48,592 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 10:41:48,592 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 10:41:49,021 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 10:41:49,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 10:41:49,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962309345] [2025-01-09 10:41:49,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962309345] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 10:41:49,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 10:41:49,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 10:41:49,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357289474] [2025-01-09 10:41:49,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 10:41:49,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 10:41:49,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 10:41:49,025 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 10:41:49,025 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 10:41:49,025 INFO L87 Difference]: Start difference. First operand 99 states and 157 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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 10:41:49,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 10:41:49,192 INFO L93 Difference]: Finished difference Result 292 states and 466 transitions. [2025-01-09 10:41:49,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 10:41:49,193 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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 214 [2025-01-09 10:41:49,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 10:41:49,195 INFO L225 Difference]: With dead ends: 292 [2025-01-09 10:41:49,195 INFO L226 Difference]: Without dead ends: 196 [2025-01-09 10:41:49,196 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 10:41:49,197 INFO L435 NwaCegarLoop]: 154 mSDtfsCounter, 95 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 455 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 10:41:49,197 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 455 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 10:41:49,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2025-01-09 10:41:49,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 159. [2025-01-09 10:41:49,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 88 states have (on average 1.2954545454545454) internal successors, (114), 88 states have internal predecessors, (114), 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 10:41:49,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 250 transitions. [2025-01-09 10:41:49,216 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 250 transitions. Word has length 214 [2025-01-09 10:41:49,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 10:41:49,216 INFO L471 AbstractCegarLoop]: Abstraction has 159 states and 250 transitions. [2025-01-09 10:41:49,216 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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 10:41:49,217 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 250 transitions. [2025-01-09 10:41:49,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2025-01-09 10:41:49,218 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 10:41:49,218 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 10:41:49,218 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-09 10:41:49,219 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 10:41:49,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 10:41:49,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1324096076, now seen corresponding path program 1 times [2025-01-09 10:41:49,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 10:41:49,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069514886] [2025-01-09 10:41:49,219 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 10:41:49,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 10:41:49,234 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 215 statements into 1 equivalence classes. [2025-01-09 10:41:49,315 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 215 of 215 statements. [2025-01-09 10:41:49,315 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 10:41:49,315 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 10:41:49,849 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 10:41:49,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 10:41:49,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069514886] [2025-01-09 10:41:49,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069514886] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 10:41:49,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 10:41:49,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-01-09 10:41:49,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361646910] [2025-01-09 10:41:49,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 10:41:49,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-09 10:41:49,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 10:41:49,851 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-09 10:41:49,851 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-01-09 10:41:49,851 INFO L87 Difference]: Start difference. First operand 159 states and 250 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 2 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2025-01-09 10:41:50,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 10:41:50,269 INFO L93 Difference]: Finished difference Result 379 states and 603 transitions. [2025-01-09 10:41:50,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 10:41:50,270 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 2 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 215 [2025-01-09 10:41:50,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 10:41:50,273 INFO L225 Difference]: With dead ends: 379 [2025-01-09 10:41:50,273 INFO L226 Difference]: Without dead ends: 283 [2025-01-09 10:41:50,274 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2025-01-09 10:41:50,274 INFO L435 NwaCegarLoop]: 188 mSDtfsCounter, 315 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 735 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 10:41:50,275 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [315 Valid, 735 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 10:41:50,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2025-01-09 10:41:50,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 253. [2025-01-09 10:41:50,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 147 states have (on average 1.3401360544217686) internal successors, (197), 147 states have internal predecessors, (197), 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 10:41:50,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 401 transitions. [2025-01-09 10:41:50,323 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 401 transitions. Word has length 215 [2025-01-09 10:41:50,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 10:41:50,325 INFO L471 AbstractCegarLoop]: Abstraction has 253 states and 401 transitions. [2025-01-09 10:41:50,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 2 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2025-01-09 10:41:50,325 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 401 transitions. [2025-01-09 10:41:50,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2025-01-09 10:41:50,332 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 10:41:50,333 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 10:41:50,333 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-09 10:41:50,333 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 10:41:50,334 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 10:41:50,334 INFO L85 PathProgramCache]: Analyzing trace with hash 2004683233, now seen corresponding path program 1 times [2025-01-09 10:41:50,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 10:41:50,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346635747] [2025-01-09 10:41:50,334 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 10:41:50,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 10:41:50,358 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 216 statements into 1 equivalence classes. [2025-01-09 10:41:50,468 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 216 of 216 statements. [2025-01-09 10:41:50,468 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 10:41:50,469 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 10:41:50,890 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 10:41:50,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 10:41:50,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346635747] [2025-01-09 10:41:50,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346635747] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 10:41:50,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2813948] [2025-01-09 10:41:50,890 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 10:41:50,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 10:41:50,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 10:41:50,893 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 10:41:50,907 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 10:41:50,975 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 216 statements into 1 equivalence classes. [2025-01-09 10:41:51,033 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 216 of 216 statements. [2025-01-09 10:41:51,033 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 10:41:51,033 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 10:41:51,035 INFO L256 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-01-09 10:41:51,040 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 10:41:51,292 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 1065 proven. 63 refuted. 0 times theorem prover too weak. 1116 trivial. 0 not checked. [2025-01-09 10:41:51,292 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 10:41:51,545 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 10:41:51,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2813948] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 10:41:51,546 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 10:41:51,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 10 [2025-01-09 10:41:51,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299553308] [2025-01-09 10:41:51,547 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 10:41:51,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-01-09 10:41:51,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 10:41:51,548 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-01-09 10:41:51,550 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2025-01-09 10:41:51,550 INFO L87 Difference]: Start difference. First operand 253 states and 401 transitions. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 2 states have call successors, (55), 2 states have call predecessors, (55), 4 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2025-01-09 10:41:52,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 10:41:52,064 INFO L93 Difference]: Finished difference Result 688 states and 1067 transitions. [2025-01-09 10:41:52,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-01-09 10:41:52,065 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 2 states have call successors, (55), 2 states have call predecessors, (55), 4 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) Word has length 216 [2025-01-09 10:41:52,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 10:41:52,071 INFO L225 Difference]: With dead ends: 688 [2025-01-09 10:41:52,071 INFO L226 Difference]: Without dead ends: 498 [2025-01-09 10:41:52,072 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 428 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=155, Invalid=307, Unknown=0, NotChecked=0, Total=462 [2025-01-09 10:41:52,073 INFO L435 NwaCegarLoop]: 112 mSDtfsCounter, 430 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-01-09 10:41:52,074 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [455 Valid, 570 Invalid, 581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 420 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-01-09 10:41:52,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2025-01-09 10:41:52,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 387. [2025-01-09 10:41:52,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 251 states have (on average 1.3545816733067728) internal successors, (340), 253 states have internal predecessors, (340), 126 states have call successors, (126), 9 states have call predecessors, (126), 9 states have return successors, (126), 124 states have call predecessors, (126), 126 states have call successors, (126) [2025-01-09 10:41:52,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 592 transitions. [2025-01-09 10:41:52,141 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 592 transitions. Word has length 216 [2025-01-09 10:41:52,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 10:41:52,142 INFO L471 AbstractCegarLoop]: Abstraction has 387 states and 592 transitions. [2025-01-09 10:41:52,142 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 2 states have call successors, (55), 2 states have call predecessors, (55), 4 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2025-01-09 10:41:52,142 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 592 transitions. [2025-01-09 10:41:52,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2025-01-09 10:41:52,144 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 10:41:52,144 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 10:41:52,153 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-01-09 10:41:52,344 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 10:41:52,345 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 10:41:52,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 10:41:52,347 INFO L85 PathProgramCache]: Analyzing trace with hash 724819555, now seen corresponding path program 1 times [2025-01-09 10:41:52,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 10:41:52,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884380354] [2025-01-09 10:41:52,347 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 10:41:52,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 10:41:52,366 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 216 statements into 1 equivalence classes. [2025-01-09 10:41:52,488 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 216 of 216 statements. [2025-01-09 10:41:52,488 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 10:41:52,488 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-09 10:41:52,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [461125345] [2025-01-09 10:41:52,492 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 10:41:52,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 10:41:52,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 10:41:52,494 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 10:41:52,498 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 10:41:52,571 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 216 statements into 1 equivalence classes. [2025-01-09 10:41:52,636 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 216 of 216 statements. [2025-01-09 10:41:52,636 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 10:41:52,636 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 10:41:52,643 INFO L256 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-01-09 10:41:52,650 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 10:41:54,188 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 10:41:54,189 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 10:42:09,583 WARN L286 SmtUtils]: Spent 5.24s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2025-01-09 10:42:19,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 10:42:19,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884380354] [2025-01-09 10:42:19,329 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-09 10:42:19,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [461125345] [2025-01-09 10:42:19,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [461125345] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 10:42:19,329 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-01-09 10:42:19,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2025-01-09 10:42:19,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575438802] [2025-01-09 10:42:19,329 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-01-09 10:42:19,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-01-09 10:42:19,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 10:42:19,331 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-01-09 10:42:19,331 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2025-01-09 10:42:19,332 INFO L87 Difference]: Start difference. First operand 387 states and 592 transitions. Second operand has 14 states, 14 states have (on average 4.357142857142857) internal successors, (61), 12 states have internal predecessors, (61), 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 10:42:19,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 10:42:19,913 INFO L93 Difference]: Finished difference Result 755 states and 1124 transitions. [2025-01-09 10:42:19,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-01-09 10:42:19,914 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.357142857142857) internal successors, (61), 12 states have internal predecessors, (61), 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 216 [2025-01-09 10:42:19,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 10:42:19,917 INFO L225 Difference]: With dead ends: 755 [2025-01-09 10:42:19,917 INFO L226 Difference]: Without dead ends: 439 [2025-01-09 10:42:19,918 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 387 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=176, Invalid=424, Unknown=0, NotChecked=0, Total=600 [2025-01-09 10:42:19,919 INFO L435 NwaCegarLoop]: 156 mSDtfsCounter, 61 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 843 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-01-09 10:42:19,919 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 843 Invalid, 529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 513 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-01-09 10:42:19,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2025-01-09 10:42:19,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 423. [2025-01-09 10:42:19,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 278 states have (on average 1.3129496402877698) internal successors, (365), 280 states have internal predecessors, (365), 126 states have call successors, (126), 18 states have call predecessors, (126), 18 states have return successors, (126), 124 states have call predecessors, (126), 126 states have call successors, (126) [2025-01-09 10:42:19,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 617 transitions. [2025-01-09 10:42:19,983 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 617 transitions. Word has length 216 [2025-01-09 10:42:19,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 10:42:19,987 INFO L471 AbstractCegarLoop]: Abstraction has 423 states and 617 transitions. [2025-01-09 10:42:19,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.357142857142857) internal successors, (61), 12 states have internal predecessors, (61), 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 10:42:19,988 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 617 transitions. [2025-01-09 10:42:19,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2025-01-09 10:42:19,989 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 10:42:19,989 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 10:42:20,009 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 10:42:20,193 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 10:42:20,194 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 10:42:20,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 10:42:20,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1472635613, now seen corresponding path program 1 times [2025-01-09 10:42:20,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 10:42:20,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766646766] [2025-01-09 10:42:20,194 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 10:42:20,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 10:42:20,217 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 216 statements into 1 equivalence classes. [2025-01-09 10:42:20,322 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 216 of 216 statements. [2025-01-09 10:42:20,324 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 10:42:20,324 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-09 10:42:20,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1920403719] [2025-01-09 10:42:20,329 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 10:42:20,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 10:42:20,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 10:42:20,334 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 10:42:20,339 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 10:42:20,405 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 216 statements into 1 equivalence classes. [2025-01-09 10:42:20,473 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 216 of 216 statements. [2025-01-09 10:42:20,474 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 10:42:20,474 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 10:42:20,477 INFO L256 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 42 conjuncts are in the unsatisfiable core [2025-01-09 10:42:20,482 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 10:42:22,600 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 10:42:22,600 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 10:42:59,147 WARN L286 SmtUtils]: Spent 12.58s 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) [2025-01-09 10:43:13,819 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse7 (mod c_~var_1_4~0 256))) (let ((.cse2 (div (mod c_~var_1_6~0 65536) .cse7)) (.cse4 (mod c_~var_1_19~0 4294967296))) (let ((.cse0 (mod (+ .cse7 c_~var_1_7~0) 65536)) (.cse1 (+ .cse4 1)) (.cse6 (mod |c_ULTIMATE.start_step_~stepLocal_2~0#1| 65536)) (.cse5 (+ (mod c_~var_1_7~0 65536) .cse7 1)) (.cse3 (mod (* c_~var_1_19~0 .cse2) 4294967296))) (and (or (< .cse0 .cse1) (not (= (mod (* .cse2 .cse0) 4294967296) .cse0))) (or (not (= .cse3 .cse0)) (< .cse4 .cse0)) (forall ((v_z_8 Int)) (or (< v_z_8 .cse1) (not (= (mod (* v_z_8 .cse2) 4294967296) v_z_8)) (< v_z_8 .cse5) (< .cse6 v_z_8))) (or (< .cse6 .cse3) (< .cse3 .cse5) (< .cse4 .cse3)))))) is different from false