./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-25_file-33.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-25_file-33.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 8be6ce3aed04a0f72fff72ce21ac27fefd98e972dd5fa46b07e62cac65a15dd5 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 09:52:53,912 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 09:52:53,975 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-09 09:52:53,980 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 09:52:53,980 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 09:52:53,998 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 09:52:53,999 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 09:52:53,999 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 09:52:54,000 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 09:52:54,000 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 09:52:54,000 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 09:52:54,000 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 09:52:54,001 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 09:52:54,001 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 09:52:54,001 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 09:52:54,001 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 09:52:54,001 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 09:52:54,001 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 09:52:54,001 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 09:52:54,002 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 09:52:54,002 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 09:52:54,002 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 09:52:54,002 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 09:52:54,002 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 09:52:54,002 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 09:52:54,002 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 09:52:54,002 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 09:52:54,003 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 09:52:54,003 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 09:52:54,003 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 09:52:54,003 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 09:52:54,003 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 09:52:54,003 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 09:52:54,003 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 09:52:54,003 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 09:52:54,004 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 09:52:54,004 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 09:52:54,004 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 09:52:54,004 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 09:52:54,004 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 09:52:54,004 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 09:52:54,004 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 09:52:54,004 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 09:52:54,005 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 09:52:54,005 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 09:52:54,005 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 09:52:54,005 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 09:52:54,005 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 09:52:54,005 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 -> 8be6ce3aed04a0f72fff72ce21ac27fefd98e972dd5fa46b07e62cac65a15dd5 [2025-01-09 09:52:54,282 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 09:52:54,289 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 09:52:54,294 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 09:52:54,296 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 09:52:54,296 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 09:52:54,297 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-25_file-33.i [2025-01-09 09:52:55,551 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/4043feec2/6f477d4402624dc09ecfa60ee8ac5b70/FLAG1254e7c79 [2025-01-09 09:52:55,800 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 09:52:55,800 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-25_file-33.i [2025-01-09 09:52:55,807 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/4043feec2/6f477d4402624dc09ecfa60ee8ac5b70/FLAG1254e7c79 [2025-01-09 09:52:55,819 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/4043feec2/6f477d4402624dc09ecfa60ee8ac5b70 [2025-01-09 09:52:55,821 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 09:52:55,822 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 09:52:55,823 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 09:52:55,824 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 09:52:55,827 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 09:52:55,828 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 09:52:55" (1/1) ... [2025-01-09 09:52:55,829 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f68d2cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:52:55, skipping insertion in model container [2025-01-09 09:52:55,829 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 09:52:55" (1/1) ... [2025-01-09 09:52:55,852 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 09:52:56,004 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-25_file-33.i[915,928] [2025-01-09 09:52:56,087 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 09:52:56,109 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 09:52:56,121 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-25_file-33.i[915,928] [2025-01-09 09:52:56,167 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 09:52:56,190 INFO L204 MainTranslator]: Completed translation [2025-01-09 09:52:56,192 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:52:56 WrapperNode [2025-01-09 09:52:56,193 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 09:52:56,195 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 09:52:56,195 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 09:52:56,196 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 09:52:56,202 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:52:56" (1/1) ... [2025-01-09 09:52:56,216 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:52:56" (1/1) ... [2025-01-09 09:52:56,253 INFO L138 Inliner]: procedures = 26, calls = 45, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 240 [2025-01-09 09:52:56,254 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 09:52:56,259 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 09:52:56,259 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 09:52:56,259 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 09:52:56,267 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:52:56" (1/1) ... [2025-01-09 09:52:56,268 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:52:56" (1/1) ... [2025-01-09 09:52:56,271 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:52:56" (1/1) ... [2025-01-09 09:52:56,307 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 09:52:56,307 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:52:56" (1/1) ... [2025-01-09 09:52:56,307 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:52:56" (1/1) ... [2025-01-09 09:52:56,320 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:52:56" (1/1) ... [2025-01-09 09:52:56,325 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:52:56" (1/1) ... [2025-01-09 09:52:56,331 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:52:56" (1/1) ... [2025-01-09 09:52:56,336 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:52:56" (1/1) ... [2025-01-09 09:52:56,338 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:52:56" (1/1) ... [2025-01-09 09:52:56,345 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 09:52:56,349 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 09:52:56,349 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 09:52:56,349 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 09:52:56,350 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:52:56" (1/1) ... [2025-01-09 09:52:56,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 09:52:56,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 09:52:56,390 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 09:52:56,393 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 09:52:56,414 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 09:52:56,414 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-01-09 09:52:56,415 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-01-09 09:52:56,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 09:52:56,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 09:52:56,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 09:52:56,488 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 09:52:56,490 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 09:52:56,890 INFO L? ?]: Removed 18 outVars from TransFormulas that were not future-live. [2025-01-09 09:52:56,890 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 09:52:56,902 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 09:52:56,903 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2025-01-09 09:52:56,904 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 09:52:56 BoogieIcfgContainer [2025-01-09 09:52:56,904 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 09:52:56,906 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 09:52:56,906 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 09:52:56,910 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 09:52:56,911 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 09:52:55" (1/3) ... [2025-01-09 09:52:56,912 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ce62fe8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 09:52:56, skipping insertion in model container [2025-01-09 09:52:56,912 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:52:56" (2/3) ... [2025-01-09 09:52:56,912 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ce62fe8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 09:52:56, skipping insertion in model container [2025-01-09 09:52:56,913 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 09:52:56" (3/3) ... [2025-01-09 09:52:56,914 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-25_file-33.i [2025-01-09 09:52:56,929 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 09:52:56,930 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodesize_ps-cn-25_file-33.i that has 2 procedures, 100 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-01-09 09:52:56,985 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 09:52:57,000 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;@39f7db7f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 09:52:57,000 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-09 09:52:57,004 INFO L276 IsEmpty]: Start isEmpty. Operand has 100 states, 65 states have (on average 1.3846153846153846) internal successors, (90), 66 states have internal predecessors, (90), 32 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2025-01-09 09:52:57,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2025-01-09 09:52:57,020 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 09:52:57,021 INFO L218 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:52:57,022 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 09:52:57,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 09:52:57,028 INFO L85 PathProgramCache]: Analyzing trace with hash 116210233, now seen corresponding path program 1 times [2025-01-09 09:52:57,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 09:52:57,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164179279] [2025-01-09 09:52:57,038 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 09:52:57,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 09:52:57,141 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 204 statements into 1 equivalence classes. [2025-01-09 09:52:57,168 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 204 of 204 statements. [2025-01-09 09:52:57,171 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 09:52:57,171 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 09:52:57,394 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 1922 trivial. 0 not checked. [2025-01-09 09:52:57,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 09:52:57,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164179279] [2025-01-09 09:52:57,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164179279] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 09:52:57,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760360190] [2025-01-09 09:52:57,396 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 09:52:57,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 09:52:57,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 09:52:57,399 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 09:52:57,400 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 09:52:57,493 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 204 statements into 1 equivalence classes. [2025-01-09 09:52:57,595 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 204 of 204 statements. [2025-01-09 09:52:57,595 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 09:52:57,595 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 09:52:57,599 INFO L256 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-01-09 09:52:57,614 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 09:52:57,656 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 1922 trivial. 0 not checked. [2025-01-09 09:52:57,657 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 09:52:57,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1760360190] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 09:52:57,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 09:52:57,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-01-09 09:52:57,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171288107] [2025-01-09 09:52:57,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 09:52:57,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-01-09 09:52:57,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 09:52:57,707 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-01-09 09:52:57,707 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 09:52:57,711 INFO L87 Difference]: Start difference. First operand has 100 states, 65 states have (on average 1.3846153846153846) internal successors, (90), 66 states have internal predecessors, (90), 32 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) 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, (32), 2 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 2 states have call successors, (32) [2025-01-09 09:52:57,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 09:52:57,746 INFO L93 Difference]: Finished difference Result 194 states and 335 transitions. [2025-01-09 09:52:57,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-09 09:52:57,748 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, (32), 2 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 2 states have call successors, (32) Word has length 204 [2025-01-09 09:52:57,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 09:52:57,755 INFO L225 Difference]: With dead ends: 194 [2025-01-09 09:52:57,756 INFO L226 Difference]: Without dead ends: 97 [2025-01-09 09:52:57,760 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 205 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 09:52:57,765 INFO L435 NwaCegarLoop]: 148 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, 148 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 09:52:57,767 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 09:52:57,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2025-01-09 09:52:57,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2025-01-09 09:52:57,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 63 states have (on average 1.3333333333333333) internal successors, (84), 63 states have internal predecessors, (84), 32 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2025-01-09 09:52:57,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 148 transitions. [2025-01-09 09:52:57,823 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 148 transitions. Word has length 204 [2025-01-09 09:52:57,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 09:52:57,825 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 148 transitions. [2025-01-09 09:52:57,825 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, (32), 2 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 2 states have call successors, (32) [2025-01-09 09:52:57,826 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 148 transitions. [2025-01-09 09:52:57,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2025-01-09 09:52:57,832 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 09:52:57,832 INFO L218 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:52:57,842 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-01-09 09:52:58,036 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 09:52:58,037 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 09:52:58,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 09:52:58,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1246383801, now seen corresponding path program 1 times [2025-01-09 09:52:58,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 09:52:58,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727723882] [2025-01-09 09:52:58,038 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 09:52:58,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 09:52:58,060 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 204 statements into 1 equivalence classes. [2025-01-09 09:52:58,211 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 204 of 204 statements. [2025-01-09 09:52:58,211 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 09:52:58,211 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 09:52:59,078 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2025-01-09 09:52:59,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 09:52:59,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727723882] [2025-01-09 09:52:59,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727723882] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 09:52:59,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 09:52:59,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 09:52:59,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726983664] [2025-01-09 09:52:59,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 09:52:59,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 09:52:59,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 09:52:59,084 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 09:52:59,084 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 09:52:59,084 INFO L87 Difference]: Start difference. First operand 97 states and 148 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, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2025-01-09 09:52:59,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 09:52:59,476 INFO L93 Difference]: Finished difference Result 290 states and 446 transitions. [2025-01-09 09:52:59,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 09:52:59,477 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, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) Word has length 204 [2025-01-09 09:52:59,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 09:52:59,483 INFO L225 Difference]: With dead ends: 290 [2025-01-09 09:52:59,483 INFO L226 Difference]: Without dead ends: 196 [2025-01-09 09:52:59,485 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 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 09:52:59,485 INFO L435 NwaCegarLoop]: 130 mSDtfsCounter, 113 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 09:52:59,485 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 381 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 09:52:59,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2025-01-09 09:52:59,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 182. [2025-01-09 09:52:59,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 115 states have (on average 1.3304347826086957) internal successors, (153), 115 states have internal predecessors, (153), 64 states have call successors, (64), 2 states have call predecessors, (64), 2 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2025-01-09 09:52:59,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 281 transitions. [2025-01-09 09:52:59,541 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 281 transitions. Word has length 204 [2025-01-09 09:52:59,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 09:52:59,543 INFO L471 AbstractCegarLoop]: Abstraction has 182 states and 281 transitions. [2025-01-09 09:52:59,543 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, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2025-01-09 09:52:59,543 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 281 transitions. [2025-01-09 09:52:59,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2025-01-09 09:52:59,549 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 09:52:59,550 INFO L218 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:52:59,550 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-09 09:52:59,550 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 09:52:59,551 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 09:52:59,551 INFO L85 PathProgramCache]: Analyzing trace with hash 762000, now seen corresponding path program 1 times [2025-01-09 09:52:59,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 09:52:59,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593555807] [2025-01-09 09:52:59,551 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 09:52:59,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 09:52:59,596 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 205 statements into 1 equivalence classes. [2025-01-09 09:52:59,629 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 205 of 205 statements. [2025-01-09 09:52:59,629 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 09:52:59,629 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 09:52:59,920 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2025-01-09 09:52:59,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 09:52:59,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593555807] [2025-01-09 09:52:59,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593555807] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 09:52:59,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 09:52:59,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 09:52:59,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890844526] [2025-01-09 09:52:59,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 09:52:59,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 09:52:59,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 09:52:59,926 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 09:52:59,926 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 09:52:59,926 INFO L87 Difference]: Start difference. First operand 182 states and 281 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, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2025-01-09 09:53:00,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 09:53:00,204 INFO L93 Difference]: Finished difference Result 299 states and 457 transitions. [2025-01-09 09:53:00,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 09:53:00,204 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, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) Word has length 205 [2025-01-09 09:53:00,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 09:53:00,207 INFO L225 Difference]: With dead ends: 299 [2025-01-09 09:53:00,207 INFO L226 Difference]: Without dead ends: 192 [2025-01-09 09:53:00,208 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 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 09:53:00,208 INFO L435 NwaCegarLoop]: 130 mSDtfsCounter, 110 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 09:53:00,209 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 386 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 09:53:00,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2025-01-09 09:53:00,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 183. [2025-01-09 09:53:00,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 116 states have (on average 1.3189655172413792) internal successors, (153), 116 states have internal predecessors, (153), 64 states have call successors, (64), 2 states have call predecessors, (64), 2 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2025-01-09 09:53:00,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 281 transitions. [2025-01-09 09:53:00,246 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 281 transitions. Word has length 205 [2025-01-09 09:53:00,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 09:53:00,247 INFO L471 AbstractCegarLoop]: Abstraction has 183 states and 281 transitions. [2025-01-09 09:53:00,248 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, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2025-01-09 09:53:00,249 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 281 transitions. [2025-01-09 09:53:00,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2025-01-09 09:53:00,264 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 09:53:00,264 INFO L218 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:53:00,264 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-09 09:53:00,264 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 09:53:00,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 09:53:00,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1475484042, now seen corresponding path program 1 times [2025-01-09 09:53:00,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 09:53:00,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418331140] [2025-01-09 09:53:00,266 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 09:53:00,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 09:53:00,287 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 206 statements into 1 equivalence classes. [2025-01-09 09:53:00,442 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 206 of 206 statements. [2025-01-09 09:53:00,443 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 09:53:00,443 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat