./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-56.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_loopvsstraightlinecode_50-while_file-56.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 57abe4a17479f92187af35d02268c3491944d7b837e25c921d34fc68b95e20be --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 13:56:36,104 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 13:56:36,161 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-09 13:56:36,166 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 13:56:36,166 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 13:56:36,187 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 13:56:36,187 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 13:56:36,187 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 13:56:36,187 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 13:56:36,187 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 13:56:36,189 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 13:56:36,189 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 13:56:36,189 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 13:56:36,189 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 13:56:36,189 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 13:56:36,190 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 13:56:36,190 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 13:56:36,190 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 13:56:36,190 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 13:56:36,190 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 13:56:36,190 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 13:56:36,190 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 13:56:36,190 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 13:56:36,190 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 13:56:36,190 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 13:56:36,191 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 13:56:36,191 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 13:56:36,191 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 13:56:36,191 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 13:56:36,191 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 13:56:36,191 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 13:56:36,191 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 13:56:36,191 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 13:56:36,191 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 13:56:36,191 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 13:56:36,192 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 13:56:36,192 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 13:56:36,192 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 13:56:36,192 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 13:56:36,192 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 13:56:36,192 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 13:56:36,192 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 13:56:36,192 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 13:56:36,192 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 13:56:36,192 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 13:56:36,192 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 13:56:36,193 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 13:56:36,193 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 13:56:36,193 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 -> 57abe4a17479f92187af35d02268c3491944d7b837e25c921d34fc68b95e20be [2025-01-09 13:56:36,398 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 13:56:36,406 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 13:56:36,408 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 13:56:36,409 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 13:56:36,409 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 13:56:36,410 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-56.i [2025-01-09 13:56:37,506 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/03fe574fd/6fd5f8203db34b8cb80c2886381ce74c/FLAGc686bc338 [2025-01-09 13:56:37,765 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 13:56:37,765 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-56.i [2025-01-09 13:56:37,771 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/03fe574fd/6fd5f8203db34b8cb80c2886381ce74c/FLAGc686bc338 [2025-01-09 13:56:38,078 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/03fe574fd/6fd5f8203db34b8cb80c2886381ce74c [2025-01-09 13:56:38,079 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 13:56:38,080 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 13:56:38,082 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 13:56:38,082 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 13:56:38,084 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 13:56:38,085 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 01:56:38" (1/1) ... [2025-01-09 13:56:38,085 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bc95332 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 01:56:38, skipping insertion in model container [2025-01-09 13:56:38,085 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 01:56:38" (1/1) ... [2025-01-09 13:56:38,097 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 13:56:38,198 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_loopvsstraightlinecode_50-while_file-56.i[915,928] [2025-01-09 13:56:38,243 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 13:56:38,253 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 13:56:38,259 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_loopvsstraightlinecode_50-while_file-56.i[915,928] [2025-01-09 13:56:38,275 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 13:56:38,287 INFO L204 MainTranslator]: Completed translation [2025-01-09 13:56:38,288 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 01:56:38 WrapperNode [2025-01-09 13:56:38,288 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 13:56:38,289 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 13:56:38,289 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 13:56:38,289 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 13:56:38,293 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 01:56:38" (1/1) ... [2025-01-09 13:56:38,303 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 01:56:38" (1/1) ... [2025-01-09 13:56:38,330 INFO L138 Inliner]: procedures = 26, calls = 35, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 130 [2025-01-09 13:56:38,331 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 13:56:38,331 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 13:56:38,331 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 13:56:38,332 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 13:56:38,338 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 01:56:38" (1/1) ... [2025-01-09 13:56:38,338 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 01:56:38" (1/1) ... [2025-01-09 13:56:38,343 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 01:56:38" (1/1) ... [2025-01-09 13:56:38,359 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 13:56:38,360 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 01:56:38" (1/1) ... [2025-01-09 13:56:38,360 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 01:56:38" (1/1) ... [2025-01-09 13:56:38,373 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 01:56:38" (1/1) ... [2025-01-09 13:56:38,375 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 01:56:38" (1/1) ... [2025-01-09 13:56:38,378 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 01:56:38" (1/1) ... [2025-01-09 13:56:38,381 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 01:56:38" (1/1) ... [2025-01-09 13:56:38,385 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 01:56:38" (1/1) ... [2025-01-09 13:56:38,388 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 13:56:38,388 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 13:56:38,388 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 13:56:38,388 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 13:56:38,389 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 01:56:38" (1/1) ... [2025-01-09 13:56:38,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 13:56:38,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 13:56:38,414 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 13:56:38,416 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 13:56:38,432 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 13:56:38,432 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-01-09 13:56:38,432 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-01-09 13:56:38,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 13:56:38,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 13:56:38,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 13:56:38,492 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 13:56:38,493 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 13:56:38,765 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2025-01-09 13:56:38,765 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 13:56:38,773 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 13:56:38,774 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2025-01-09 13:56:38,774 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 01:56:38 BoogieIcfgContainer [2025-01-09 13:56:38,774 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 13:56:38,776 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 13:56:38,777 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 13:56:38,780 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 13:56:38,780 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 01:56:38" (1/3) ... [2025-01-09 13:56:38,781 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2176b0ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 01:56:38, skipping insertion in model container [2025-01-09 13:56:38,781 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 01:56:38" (2/3) ... [2025-01-09 13:56:38,781 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2176b0ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 01:56:38, skipping insertion in model container [2025-01-09 13:56:38,781 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 01:56:38" (3/3) ... [2025-01-09 13:56:38,782 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_50-while_file-56.i [2025-01-09 13:56:38,792 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 13:56:38,794 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_loopvsstraightlinecode_50-while_file-56.i that has 2 procedures, 61 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-01-09 13:56:38,834 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 13:56:38,842 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;@1ebfa0cb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 13:56:38,842 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-09 13:56:38,845 INFO L276 IsEmpty]: Start isEmpty. Operand has 61 states, 36 states have (on average 1.3055555555555556) internal successors, (47), 37 states have internal predecessors, (47), 22 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2025-01-09 13:56:38,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2025-01-09 13:56:38,851 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 13:56:38,852 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:56:38,852 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 13:56:38,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 13:56:38,855 INFO L85 PathProgramCache]: Analyzing trace with hash -982789905, now seen corresponding path program 1 times [2025-01-09 13:56:38,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 13:56:38,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673092312] [2025-01-09 13:56:38,860 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 13:56:38,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 13:56:38,932 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 139 statements into 1 equivalence classes. [2025-01-09 13:56:39,041 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 139 of 139 statements. [2025-01-09 13:56:39,044 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 13:56:39,044 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 13:56:39,460 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2025-01-09 13:56:39,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 13:56:39,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673092312] [2025-01-09 13:56:39,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673092312] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 13:56:39,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 13:56:39,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 13:56:39,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835857697] [2025-01-09 13:56:39,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 13:56:39,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 13:56:39,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 13:56:39,478 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 13:56:39,479 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 13:56:39,480 INFO L87 Difference]: Start difference. First operand has 61 states, 36 states have (on average 1.3055555555555556) internal successors, (47), 37 states have internal predecessors, (47), 22 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2025-01-09 13:56:39,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 13:56:39,532 INFO L93 Difference]: Finished difference Result 171 states and 307 transitions. [2025-01-09 13:56:39,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 13:56:39,535 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 139 [2025-01-09 13:56:39,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 13:56:39,540 INFO L225 Difference]: With dead ends: 171 [2025-01-09 13:56:39,541 INFO L226 Difference]: Without dead ends: 113 [2025-01-09 13:56:39,544 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 13:56:39,546 INFO L435 NwaCegarLoop]: 84 mSDtfsCounter, 44 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 13:56:39,546 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 163 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 13:56:39,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2025-01-09 13:56:39,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 111. [2025-01-09 13:56:39,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 64 states have (on average 1.234375) internal successors, (79), 64 states have internal predecessors, (79), 44 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2025-01-09 13:56:39,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 167 transitions. [2025-01-09 13:56:39,581 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 167 transitions. Word has length 139 [2025-01-09 13:56:39,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 13:56:39,582 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 167 transitions. [2025-01-09 13:56:39,582 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2025-01-09 13:56:39,582 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 167 transitions. [2025-01-09 13:56:39,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2025-01-09 13:56:39,588 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 13:56:39,588 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:56:39,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-09 13:56:39,589 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 13:56:39,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 13:56:39,589 INFO L85 PathProgramCache]: Analyzing trace with hash -281725327, now seen corresponding path program 1 times [2025-01-09 13:56:39,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 13:56:39,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317431209] [2025-01-09 13:56:39,590 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 13:56:39,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 13:56:39,601 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 139 statements into 1 equivalence classes. [2025-01-09 13:56:39,717 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 139 of 139 statements. [2025-01-09 13:56:39,718 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 13:56:39,718 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat