./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/xcsp/Haystacks-18.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 798a7b37 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/xcsp/Haystacks-18.c -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 f9a9ba623d3c8e76f720044f6cee806c2cbb3a59e31c97b7ec192a59b4bad2aa --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-03 15:32:18,502 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-03 15:32:18,550 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-03 15:32:18,555 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-03 15:32:18,555 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-03 15:32:18,577 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-03 15:32:18,577 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-03 15:32:18,577 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-03 15:32:18,577 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-03 15:32:18,577 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-03 15:32:18,577 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-03 15:32:18,578 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-03 15:32:18,578 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-03 15:32:18,578 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-03 15:32:18,578 INFO L153 SettingsManager]: * Use SBE=true [2025-03-03 15:32:18,578 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-03 15:32:18,578 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-03 15:32:18,578 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-03 15:32:18,578 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-03 15:32:18,578 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-03 15:32:18,578 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-03 15:32:18,578 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-03 15:32:18,578 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-03 15:32:18,579 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-03 15:32:18,579 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-03 15:32:18,579 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-03 15:32:18,580 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-03 15:32:18,580 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-03 15:32:18,580 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-03 15:32:18,580 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-03 15:32:18,580 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-03 15:32:18,580 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-03 15:32:18,580 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 15:32:18,580 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-03 15:32:18,580 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-03 15:32:18,580 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-03 15:32:18,580 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-03 15:32:18,581 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-03 15:32:18,581 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-03 15:32:18,581 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-03 15:32:18,581 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-03 15:32:18,581 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-03 15:32:18,581 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-03 15:32:18,581 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 -> f9a9ba623d3c8e76f720044f6cee806c2cbb3a59e31c97b7ec192a59b4bad2aa [2025-03-03 15:32:18,796 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-03 15:32:18,803 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-03 15:32:18,805 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-03 15:32:18,806 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-03 15:32:18,806 INFO L274 PluginConnector]: CDTParser initialized [2025-03-03 15:32:18,807 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/xcsp/Haystacks-18.c [2025-03-03 15:32:19,955 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd8fa9894/d37aeaa5b97544eaba273e131a37e7ed/FLAGd6499d193 [2025-03-03 15:32:20,290 INFO L384 CDTParser]: Found 1 translation units. [2025-03-03 15:32:20,291 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/xcsp/Haystacks-18.c [2025-03-03 15:32:20,311 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd8fa9894/d37aeaa5b97544eaba273e131a37e7ed/FLAGd6499d193 [2025-03-03 15:32:20,520 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd8fa9894/d37aeaa5b97544eaba273e131a37e7ed [2025-03-03 15:32:20,522 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-03 15:32:20,523 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-03 15:32:20,524 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-03 15:32:20,524 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-03 15:32:20,527 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-03 15:32:20,528 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 03:32:20" (1/1) ... [2025-03-03 15:32:20,529 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@411ec248 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:32:20, skipping insertion in model container [2025-03-03 15:32:20,529 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 03:32:20" (1/1) ... [2025-03-03 15:32:20,588 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-03 15:32:21,036 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/xcsp/Haystacks-18.c[147234,147247] [2025-03-03 15:32:21,074 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 15:32:21,084 INFO L200 MainTranslator]: Completed pre-run [2025-03-03 15:32:21,216 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/xcsp/Haystacks-18.c[147234,147247] [2025-03-03 15:32:21,225 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 15:32:21,236 INFO L204 MainTranslator]: Completed translation [2025-03-03 15:32:21,237 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:32:21 WrapperNode [2025-03-03 15:32:21,237 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-03 15:32:21,238 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-03 15:32:21,238 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-03 15:32:21,238 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-03 15:32:21,243 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:32:21" (1/1) ... [2025-03-03 15:32:21,288 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:32:21" (1/1) ... [2025-03-03 15:32:21,426 INFO L138 Inliner]: procedures = 13, calls = 3715, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 5344 [2025-03-03 15:32:21,426 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-03 15:32:21,427 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-03 15:32:21,427 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-03 15:32:21,427 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-03 15:32:21,433 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:32:21" (1/1) ... [2025-03-03 15:32:21,434 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:32:21" (1/1) ... [2025-03-03 15:32:21,459 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:32:21" (1/1) ... [2025-03-03 15:32:21,499 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]. [2025-03-03 15:32:21,501 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:32:21" (1/1) ... [2025-03-03 15:32:21,501 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:32:21" (1/1) ... [2025-03-03 15:32:21,549 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:32:21" (1/1) ... [2025-03-03 15:32:21,558 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:32:21" (1/1) ... [2025-03-03 15:32:21,568 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:32:21" (1/1) ... [2025-03-03 15:32:21,577 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:32:21" (1/1) ... [2025-03-03 15:32:21,596 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-03 15:32:21,598 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-03 15:32:21,598 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-03 15:32:21,599 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-03 15:32:21,599 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:32:21" (1/1) ... [2025-03-03 15:32:21,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 15:32:21,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 15:32:21,626 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) [2025-03-03 15:32:21,629 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 [2025-03-03 15:32:21,648 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-03 15:32:21,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-03 15:32:21,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-03 15:32:21,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-03 15:32:21,649 INFO L130 BoogieDeclarations]: Found specification of procedure assume [2025-03-03 15:32:21,649 INFO L138 BoogieDeclarations]: Found implementation of procedure assume [2025-03-03 15:32:21,828 INFO L256 CfgBuilder]: Building ICFG [2025-03-03 15:32:21,830 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-03 15:32:39,801 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2025-03-03 15:32:39,801 INFO L307 CfgBuilder]: Performing block encoding [2025-03-03 15:32:39,863 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-03 15:32:39,864 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-03 15:32:39,864 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 03:32:39 BoogieIcfgContainer [2025-03-03 15:32:39,864 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-03 15:32:39,866 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-03 15:32:39,866 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-03 15:32:39,869 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-03 15:32:39,870 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 03:32:20" (1/3) ... [2025-03-03 15:32:39,870 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66b35a95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 03:32:39, skipping insertion in model container [2025-03-03 15:32:39,870 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:32:21" (2/3) ... [2025-03-03 15:32:39,870 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66b35a95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 03:32:39, skipping insertion in model container [2025-03-03 15:32:39,870 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 03:32:39" (3/3) ... [2025-03-03 15:32:39,871 INFO L128 eAbstractionObserver]: Analyzing ICFG Haystacks-18.c [2025-03-03 15:32:39,881 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-03 15:32:39,883 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Haystacks-18.c that has 2 procedures, 4043 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2025-03-03 15:32:40,020 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-03 15:32:40,030 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;@2f9a49dc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-03 15:32:40,031 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-03 15:32:40,045 INFO L276 IsEmpty]: Start isEmpty. Operand has 4043 states, 332 states have (on average 1.0060240963855422) internal successors, (334), 333 states have internal predecessors, (334), 3708 states have call successors, (3708), 1 states have call predecessors, (3708), 1 states have return successors, (3708), 3708 states have call predecessors, (3708), 3708 states have call successors, (3708) [2025-03-03 15:32:41,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18868 [2025-03-03 15:32:41,983 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 15:32:41,989 INFO L218 NwaCegarLoop]: trace histogram [3708, 3708, 3708, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 15:32:41,989 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 15:32:41,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 15:32:41,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1438304561, now seen corresponding path program 1 times [2025-03-03 15:32:42,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 15:32:42,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548642304] [2025-03-03 15:32:42,007 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:32:42,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 15:32:42,498 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18867 statements into 1 equivalence classes. [2025-03-03 15:32:42,600 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18867 of 18867 statements. [2025-03-03 15:32:42,600 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:32:42,601 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:33:20,028 INFO L134 CoverageAnalysis]: Checked inductivity of 27491112 backedges. 0 proven. 7414 refuted. 0 times theorem prover too weak. 27483698 trivial. 0 not checked. [2025-03-03 15:33:20,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 15:33:20,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548642304] [2025-03-03 15:33:20,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548642304] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 15:33:20,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1864372868] [2025-03-03 15:33:20,031 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:33:20,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 15:33:20,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 15:33:20,034 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) [2025-03-03 15:33:20,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-03 15:33:21,271 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18867 statements into 1 equivalence classes. [2025-03-03 15:33:23,945 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18867 of 18867 statements. [2025-03-03 15:33:23,946 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:33:23,946 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:33:24,087 INFO L256 TraceCheckSpWp]: Trace formula consists of 34046 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-03 15:33:24,291 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 15:33:25,294 INFO L134 CoverageAnalysis]: Checked inductivity of 27491112 backedges. 7414 proven. 0 refuted. 0 times theorem prover too weak. 27483698 trivial. 0 not checked. [2025-03-03 15:33:25,294 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 15:33:25,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1864372868] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 15:33:25,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 15:33:25,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-03 15:33:25,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597058551] [2025-03-03 15:33:25,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 15:33:25,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-03 15:33:25,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 15:33:25,342 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-03 15:33:25,342 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-03 15:33:25,365 INFO L87 Difference]: Start difference. First operand has 4043 states, 332 states have (on average 1.0060240963855422) internal successors, (334), 333 states have internal predecessors, (334), 3708 states have call successors, (3708), 1 states have call predecessors, (3708), 1 states have return successors, (3708), 3708 states have call predecessors, (3708), 3708 states have call successors, (3708) Second operand has 2 states, 2 states have (on average 166.0) internal successors, (332), 2 states have internal predecessors, (332), 2 states have call successors, (3708), 2 states have call predecessors, (3708), 1 states have return successors, (3708), 1 states have call predecessors, (3708), 2 states have call successors, (3708) [2025-03-03 15:33:25,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 15:33:25,654 INFO L93 Difference]: Finished difference Result 8080 states and 19202 transitions. [2025-03-03 15:33:25,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-03 15:33:25,664 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 166.0) internal successors, (332), 2 states have internal predecessors, (332), 2 states have call successors, (3708), 2 states have call predecessors, (3708), 1 states have return successors, (3708), 1 states have call predecessors, (3708), 2 states have call successors, (3708) Word has length 18867 [2025-03-03 15:33:25,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 15:33:25,724 INFO L225 Difference]: With dead ends: 8080 [2025-03-03 15:33:25,724 INFO L226 Difference]: Without dead ends: 4040 [2025-03-03 15:33:25,773 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18868 GetRequests, 18868 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-03 15:33:25,776 INFO L435 NwaCegarLoop]: 7746 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, 7746 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 [2025-03-03 15:33:25,778 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 7746 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 15:33:25,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4040 states. [2025-03-03 15:33:31,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4040 to 4040. [2025-03-03 15:33:31,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4040 states, 330 states have (on average 1.0) internal successors, (330), 330 states have internal predecessors, (330), 3708 states have call successors, (3708), 1 states have call predecessors, (3708), 1 states have return successors, (3708), 3708 states have call predecessors, (3708), 3708 states have call successors, (3708) [2025-03-03 15:33:31,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4040 states to 4040 states and 7746 transitions. [2025-03-03 15:33:31,141 INFO L78 Accepts]: Start accepts. Automaton has 4040 states and 7746 transitions. Word has length 18867 [2025-03-03 15:33:31,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 15:33:31,147 INFO L471 AbstractCegarLoop]: Abstraction has 4040 states and 7746 transitions. [2025-03-03 15:33:31,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 166.0) internal successors, (332), 2 states have internal predecessors, (332), 2 states have call successors, (3708), 2 states have call predecessors, (3708), 1 states have return successors, (3708), 1 states have call predecessors, (3708), 2 states have call successors, (3708) [2025-03-03 15:33:31,153 INFO L276 IsEmpty]: Start isEmpty. Operand 4040 states and 7746 transitions. [2025-03-03 15:33:33,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18868 [2025-03-03 15:33:33,317 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 15:33:33,322 INFO L218 NwaCegarLoop]: trace histogram [3708, 3708, 3708, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 15:33:33,384 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-03 15:33:33,523 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 [2025-03-03 15:33:33,523 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 15:33:33,527 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 15:33:33,531 INFO L85 PathProgramCache]: Analyzing trace with hash -705440527, now seen corresponding path program 1 times [2025-03-03 15:33:33,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 15:33:33,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352088728] [2025-03-03 15:33:33,533 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:33:33,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 15:33:33,878 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18867 statements into 1 equivalence classes.