./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-45.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-45.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/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 325f6f71ceb6097da9c4ecc253ba619e9443c6de9757f3c89b1cfd251d5bc1e1 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 10:36:15,223 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 10:36:15,283 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 10:36:15,290 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 10:36:15,292 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 10:36:15,315 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 10:36:15,316 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 10:36:15,316 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 10:36:15,317 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 10:36:15,317 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 10:36:15,317 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 10:36:15,318 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 10:36:15,318 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 10:36:15,318 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 10:36:15,318 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 10:36:15,319 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 10:36:15,319 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 10:36:15,319 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 10:36:15,319 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 10:36:15,319 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 10:36:15,319 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 10:36:15,319 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 10:36:15,319 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 10:36:15,320 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 10:36:15,320 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 10:36:15,320 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 10:36:15,320 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 10:36:15,320 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 10:36:15,320 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 10:36:15,320 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 10:36:15,320 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 10:36:15,320 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 10:36:15,320 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 10:36:15,320 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 10:36:15,321 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 10:36:15,321 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 10:36:15,321 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 10:36:15,321 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 10:36:15,321 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 10:36:15,321 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 10:36:15,321 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 10:36:15,322 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 10:36:15,322 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 10:36:15,322 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/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 -> 325f6f71ceb6097da9c4ecc253ba619e9443c6de9757f3c89b1cfd251d5bc1e1 [2025-03-08 10:36:15,557 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 10:36:15,563 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 10:36:15,564 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 10:36:15,565 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 10:36:15,565 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 10:36:15,566 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-45.i [2025-03-08 10:36:16,703 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c22c77e2/b032bf7535214776b044881535d64b3e/FLAG3a2152b85 [2025-03-08 10:36:16,955 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 10:36:16,955 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-45.i [2025-03-08 10:36:16,963 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c22c77e2/b032bf7535214776b044881535d64b3e/FLAG3a2152b85 [2025-03-08 10:36:17,287 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c22c77e2/b032bf7535214776b044881535d64b3e [2025-03-08 10:36:17,290 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 10:36:17,291 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 10:36:17,293 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 10:36:17,294 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 10:36:17,298 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 10:36:17,299 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 10:36:17" (1/1) ... [2025-03-08 10:36:17,300 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d1c6a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:36:17, skipping insertion in model container [2025-03-08 10:36:17,300 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 10:36:17" (1/1) ... [2025-03-08 10:36:17,319 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 10:36:17,428 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-45.i[916,929] [2025-03-08 10:36:17,533 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 10:36:17,550 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 10:36:17,559 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-45.i[916,929] [2025-03-08 10:36:17,598 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 10:36:17,613 INFO L204 MainTranslator]: Completed translation [2025-03-08 10:36:17,614 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:36:17 WrapperNode [2025-03-08 10:36:17,615 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 10:36:17,616 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 10:36:17,616 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 10:36:17,616 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 10:36:17,621 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:36:17" (1/1) ... [2025-03-08 10:36:17,630 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:36:17" (1/1) ... [2025-03-08 10:36:17,658 INFO L138 Inliner]: procedures = 26, calls = 82, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 351 [2025-03-08 10:36:17,659 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 10:36:17,659 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 10:36:17,659 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 10:36:17,659 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 10:36:17,667 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:36:17" (1/1) ... [2025-03-08 10:36:17,667 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:36:17" (1/1) ... [2025-03-08 10:36:17,672 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:36:17" (1/1) ... [2025-03-08 10:36:17,692 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]. [2025-03-08 10:36:17,693 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:36:17" (1/1) ... [2025-03-08 10:36:17,693 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:36:17" (1/1) ... [2025-03-08 10:36:17,701 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:36:17" (1/1) ... [2025-03-08 10:36:17,702 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:36:17" (1/1) ... [2025-03-08 10:36:17,703 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:36:17" (1/1) ... [2025-03-08 10:36:17,704 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:36:17" (1/1) ... [2025-03-08 10:36:17,707 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 10:36:17,708 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 10:36:17,708 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 10:36:17,708 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 10:36:17,712 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:36:17" (1/1) ... [2025-03-08 10:36:17,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 10:36:17,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 10:36:17,741 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-08 10:36:17,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-08 10:36:17,762 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 10:36:17,762 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-08 10:36:17,762 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-08 10:36:17,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 10:36:17,762 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 10:36:17,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 10:36:17,849 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 10:36:17,851 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 10:36:18,308 INFO L? ?]: Removed 16 outVars from TransFormulas that were not future-live. [2025-03-08 10:36:18,309 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 10:36:18,322 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 10:36:18,322 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 10:36:18,322 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 10:36:18 BoogieIcfgContainer [2025-03-08 10:36:18,322 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 10:36:18,324 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 10:36:18,324 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 10:36:18,329 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 10:36:18,330 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 10:36:17" (1/3) ... [2025-03-08 10:36:18,330 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8d0486 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 10:36:18, skipping insertion in model container [2025-03-08 10:36:18,330 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:36:17" (2/3) ... [2025-03-08 10:36:18,330 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8d0486 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 10:36:18, skipping insertion in model container [2025-03-08 10:36:18,330 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 10:36:18" (3/3) ... [2025-03-08 10:36:18,331 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-100_file-45.i [2025-03-08 10:36:18,342 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 10:36:18,345 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodesize_ps-cn-100_file-45.i that has 2 procedures, 157 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-08 10:36:18,402 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 10:36:18,412 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;@27c405a4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 10:36:18,413 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 10:36:18,417 INFO L276 IsEmpty]: Start isEmpty. Operand has 157 states, 85 states have (on average 1.3529411764705883) internal successors, (115), 86 states have internal predecessors, (115), 69 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2025-03-08 10:36:18,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2025-03-08 10:36:18,461 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 10:36:18,462 INFO L218 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 10:36:18,462 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 10:36:18,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 10:36:18,472 INFO L85 PathProgramCache]: Analyzing trace with hash 775097602, now seen corresponding path program 1 times [2025-03-08 10:36:18,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 10:36:18,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415698538] [2025-03-08 10:36:18,480 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 10:36:18,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 10:36:18,589 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 414 statements into 1 equivalence classes. [2025-03-08 10:36:18,620 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 414 of 414 statements. [2025-03-08 10:36:18,623 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 10:36:18,623 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 10:36:18,942 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 9248 trivial. 0 not checked. [2025-03-08 10:36:18,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 10:36:18,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415698538] [2025-03-08 10:36:18,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415698538] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 10:36:18,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193218143] [2025-03-08 10:36:18,944 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 10:36:18,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 10:36:18,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 10:36:18,946 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 10:36:18,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-08 10:36:19,041 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 414 statements into 1 equivalence classes. [2025-03-08 10:36:19,160 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 414 of 414 statements. [2025-03-08 10:36:19,160 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 10:36:19,160 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 10:36:19,166 INFO L256 TraceCheckSpWp]: Trace formula consists of 895 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-08 10:36:19,205 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 10:36:19,238 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 9248 trivial. 0 not checked. [2025-03-08 10:36:19,239 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 10:36:19,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [193218143] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 10:36:19,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 10:36:19,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-08 10:36:19,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596532440] [2025-03-08 10:36:19,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 10:36:19,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-08 10:36:19,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 10:36:19,257 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-08 10:36:19,258 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 10:36:19,259 INFO L87 Difference]: Start difference. First operand has 157 states, 85 states have (on average 1.3529411764705883) internal successors, (115), 86 states have internal predecessors, (115), 69 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) Second operand has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 2 states have call successors, (69), 2 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 2 states have call successors, (69) [2025-03-08 10:36:19,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 10:36:19,292 INFO L93 Difference]: Finished difference Result 308 states and 570 transitions. [2025-03-08 10:36:19,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-08 10:36:19,294 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 2 states have call successors, (69), 2 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 2 states have call successors, (69) Word has length 414 [2025-03-08 10:36:19,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 10:36:19,301 INFO L225 Difference]: With dead ends: 308 [2025-03-08 10:36:19,302 INFO L226 Difference]: Without dead ends: 154 [2025-03-08 10:36:19,305 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 415 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 10:36:19,307 INFO L435 NwaCegarLoop]: 248 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, 248 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 [2025-03-08 10:36:19,308 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 10:36:19,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2025-03-08 10:36:19,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2025-03-08 10:36:19,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 83 states have (on average 1.3253012048192772) internal successors, (110), 83 states have internal predecessors, (110), 69 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2025-03-08 10:36:19,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 248 transitions. [2025-03-08 10:36:19,348 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 248 transitions. Word has length 414 [2025-03-08 10:36:19,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 10:36:19,349 INFO L471 AbstractCegarLoop]: Abstraction has 154 states and 248 transitions. [2025-03-08 10:36:19,349 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 2 states have call successors, (69), 2 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 2 states have call successors, (69) [2025-03-08 10:36:19,350 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 248 transitions. [2025-03-08 10:36:19,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2025-03-08 10:36:19,355 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 10:36:19,355 INFO L218 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 10:36:19,363 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-08 10:36:19,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-03-08 10:36:19,556 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 10:36:19,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 10:36:19,557 INFO L85 PathProgramCache]: Analyzing trace with hash -958400577, now seen corresponding path program 1 times [2025-03-08 10:36:19,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 10:36:19,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862438209] [2025-03-08 10:36:19,557 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 10:36:19,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 10:36:19,592 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 414 statements into 1 equivalence classes. [2025-03-08 10:36:19,645 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 414 of 414 statements. [2025-03-08 10:36:19,645 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 10:36:19,645 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 10:36:19,864 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9384 trivial. 0 not checked. [2025-03-08 10:36:19,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 10:36:19,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862438209] [2025-03-08 10:36:19,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862438209] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 10:36:19,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 10:36:19,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 10:36:19,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632067861] [2025-03-08 10:36:19,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 10:36:19,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 10:36:19,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 10:36:19,870 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 10:36:19,870 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 10:36:19,870 INFO L87 Difference]: Start difference. First operand 154 states and 248 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2025-03-08 10:36:19,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 10:36:19,934 INFO L93 Difference]: Finished difference Result 370 states and 596 transitions. [2025-03-08 10:36:19,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 10:36:19,935 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) Word has length 414 [2025-03-08 10:36:19,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 10:36:19,938 INFO L225 Difference]: With dead ends: 370 [2025-03-08 10:36:19,938 INFO L226 Difference]: Without dead ends: 219 [2025-03-08 10:36:19,939 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 10:36:19,939 INFO L435 NwaCegarLoop]: 300 mSDtfsCounter, 106 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 532 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 10:36:19,943 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 532 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 10:36:19,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2025-03-08 10:36:19,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 216. [2025-03-08 10:36:19,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 128 states have (on average 1.390625) internal successors, (178), 129 states have internal predecessors, (178), 85 states have call successors, (85), 2 states have call predecessors, (85), 2 states have return successors, (85), 84 states have call predecessors, (85), 85 states have call successors, (85) [2025-03-08 10:36:19,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 348 transitions. [2025-03-08 10:36:19,983 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 348 transitions. Word has length 414 [2025-03-08 10:36:19,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 10:36:19,985 INFO L471 AbstractCegarLoop]: Abstraction has 216 states and 348 transitions. [2025-03-08 10:36:19,985 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2025-03-08 10:36:19,986 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 348 transitions. [2025-03-08 10:36:19,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2025-03-08 10:36:19,992 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 10:36:19,992 INFO L218 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 10:36:19,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 10:36:19,993 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 10:36:19,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 10:36:19,994 INFO L85 PathProgramCache]: Analyzing trace with hash -927380770, now seen corresponding path program 1 times [2025-03-08 10:36:19,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 10:36:19,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299194366] [2025-03-08 10:36:19,996 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 10:36:19,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 10:36:20,027 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 414 statements into 1 equivalence classes. [2025-03-08 10:36:20,073 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 414 of 414 statements. [2025-03-08 10:36:20,074 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 10:36:20,074 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 10:36:20,268 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9384 trivial. 0 not checked. [2025-03-08 10:36:20,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 10:36:20,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299194366] [2025-03-08 10:36:20,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299194366] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 10:36:20,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 10:36:20,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 10:36:20,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254150514] [2025-03-08 10:36:20,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 10:36:20,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 10:36:20,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 10:36:20,271 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 10:36:20,271 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 10:36:20,271 INFO L87 Difference]: Start difference. First operand 216 states and 348 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2025-03-08 10:36:20,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 10:36:20,339 INFO L93 Difference]: Finished difference Result 636 states and 1026 transitions. [2025-03-08 10:36:20,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 10:36:20,340 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) Word has length 414 [2025-03-08 10:36:20,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 10:36:20,348 INFO L225 Difference]: With dead ends: 636 [2025-03-08 10:36:20,349 INFO L226 Difference]: Without dead ends: 423 [2025-03-08 10:36:20,349 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 10:36:20,350 INFO L435 NwaCegarLoop]: 256 mSDtfsCounter, 237 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 10:36:20,350 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 489 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 10:36:20,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2025-03-08 10:36:20,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 421. [2025-03-08 10:36:20,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 246 states have (on average 1.3577235772357723) internal successors, (334), 248 states have internal predecessors, (334), 170 states have call successors, (170), 4 states have call predecessors, (170), 4 states have return successors, (170), 168 states have call predecessors, (170), 170 states have call successors, (170) [2025-03-08 10:36:20,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 674 transitions. [2025-03-08 10:36:20,439 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 674 transitions. Word has length 414 [2025-03-08 10:36:20,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 10:36:20,440 INFO L471 AbstractCegarLoop]: Abstraction has 421 states and 674 transitions. [2025-03-08 10:36:20,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2025-03-08 10:36:20,440 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 674 transitions. [2025-03-08 10:36:20,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2025-03-08 10:36:20,461 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 10:36:20,461 INFO L218 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 10:36:20,461 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 10:36:20,462 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 10:36:20,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 10:36:20,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1962333716, now seen corresponding path program 1 times [2025-03-08 10:36:20,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 10:36:20,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327512864] [2025-03-08 10:36:20,462 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 10:36:20,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 10:36:20,491 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 415 statements into 1 equivalence classes. [2025-03-08 10:36:20,751 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 415 of 415 statements. [2025-03-08 10:36:20,751 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 10:36:20,752 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat