./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-98.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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_1.5.800.v20200727-1323.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_fillercodestructure_filler-pr-co_file-98.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 b1b9302ff54a53ad4ae263e58d48d5865cea0604451c8d951e928f2ef921524a --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 21:13:26,566 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 21:13:26,640 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 21:13:26,645 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 21:13:26,646 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 21:13:26,667 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 21:13:26,668 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 21:13:26,668 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 21:13:26,669 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 21:13:26,669 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 21:13:26,670 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 21:13:26,670 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 21:13:26,670 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 21:13:26,671 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 21:13:26,671 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 21:13:26,672 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 21:13:26,672 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 21:13:26,675 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 21:13:26,675 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 21:13:26,675 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 21:13:26,676 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 21:13:26,676 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 21:13:26,677 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 21:13:26,677 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 21:13:26,677 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 21:13:26,678 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 21:13:26,678 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 21:13:26,678 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 21:13:26,679 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 21:13:26,679 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 21:13:26,679 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 21:13:26,682 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 21:13:26,682 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 21:13:26,683 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 21:13:26,683 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 21:13:26,683 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 21:13:26,683 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 21:13:26,683 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 21:13:26,684 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 21:13:26,684 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 21:13:26,684 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 21:13:26,685 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 21:13:26,686 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b1b9302ff54a53ad4ae263e58d48d5865cea0604451c8d951e928f2ef921524a [2024-11-18 21:13:26,968 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 21:13:26,996 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 21:13:26,999 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 21:13:27,001 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 21:13:27,002 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 21:13:27,004 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-98.i [2024-11-18 21:13:28,507 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 21:13:28,748 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 21:13:28,749 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-98.i [2024-11-18 21:13:28,762 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69b3f7f6a/d74665e2e1944f3b95b8e0334e8a52ac/FLAGe99247103 [2024-11-18 21:13:28,778 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69b3f7f6a/d74665e2e1944f3b95b8e0334e8a52ac [2024-11-18 21:13:28,781 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 21:13:28,782 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 21:13:28,783 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 21:13:28,783 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 21:13:28,790 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 21:13:28,790 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:13:28" (1/1) ... [2024-11-18 21:13:28,791 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44ff1e40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:13:28, skipping insertion in model container [2024-11-18 21:13:28,791 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:13:28" (1/1) ... [2024-11-18 21:13:28,830 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 21:13:29,001 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_fillercodestructure_filler-pr-co_file-98.i[919,932] [2024-11-18 21:13:29,077 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 21:13:29,092 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 21:13:29,102 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_fillercodestructure_filler-pr-co_file-98.i[919,932] [2024-11-18 21:13:29,142 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 21:13:29,165 INFO L204 MainTranslator]: Completed translation [2024-11-18 21:13:29,165 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:13:29 WrapperNode [2024-11-18 21:13:29,165 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 21:13:29,166 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 21:13:29,166 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 21:13:29,166 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 21:13:29,172 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:13:29" (1/1) ... [2024-11-18 21:13:29,183 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:13:29" (1/1) ... [2024-11-18 21:13:29,221 INFO L138 Inliner]: procedures = 26, calls = 47, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 248 [2024-11-18 21:13:29,222 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 21:13:29,223 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 21:13:29,223 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 21:13:29,223 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 21:13:29,237 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:13:29" (1/1) ... [2024-11-18 21:13:29,238 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:13:29" (1/1) ... [2024-11-18 21:13:29,243 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:13:29" (1/1) ... [2024-11-18 21:13:29,271 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]. [2024-11-18 21:13:29,271 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:13:29" (1/1) ... [2024-11-18 21:13:29,271 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:13:29" (1/1) ... [2024-11-18 21:13:29,290 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:13:29" (1/1) ... [2024-11-18 21:13:29,296 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:13:29" (1/1) ... [2024-11-18 21:13:29,304 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:13:29" (1/1) ... [2024-11-18 21:13:29,308 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:13:29" (1/1) ... [2024-11-18 21:13:29,315 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 21:13:29,317 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 21:13:29,318 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 21:13:29,318 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 21:13:29,319 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:13:29" (1/1) ... [2024-11-18 21:13:29,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 21:13:29,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 21:13:29,354 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) [2024-11-18 21:13:29,360 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 [2024-11-18 21:13:29,405 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 21:13:29,406 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 21:13:29,407 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 21:13:29,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 21:13:29,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 21:13:29,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 21:13:29,497 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 21:13:29,501 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 21:13:30,022 INFO L? ?]: Removed 16 outVars from TransFormulas that were not future-live. [2024-11-18 21:13:30,023 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 21:13:30,045 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 21:13:30,045 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 21:13:30,046 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:13:30 BoogieIcfgContainer [2024-11-18 21:13:30,046 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 21:13:30,050 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 21:13:30,050 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 21:13:30,054 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 21:13:30,054 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 09:13:28" (1/3) ... [2024-11-18 21:13:30,055 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ddb3cb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:13:30, skipping insertion in model container [2024-11-18 21:13:30,055 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:13:29" (2/3) ... [2024-11-18 21:13:30,056 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ddb3cb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:13:30, skipping insertion in model container [2024-11-18 21:13:30,056 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:13:30" (3/3) ... [2024-11-18 21:13:30,057 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pr-co_file-98.i [2024-11-18 21:13:30,077 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 21:13:30,078 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 21:13:30,150 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 21:13:30,158 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;@62fdc5ef, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 21:13:30,158 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 21:13:30,163 INFO L276 IsEmpty]: Start isEmpty. Operand has 106 states, 69 states have (on average 1.434782608695652) internal successors, (99), 70 states have internal predecessors, (99), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-11-18 21:13:30,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2024-11-18 21:13:30,178 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:13:30,179 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 21:13:30,180 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:13:30,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:13:30,185 INFO L85 PathProgramCache]: Analyzing trace with hash 2007489777, now seen corresponding path program 1 times [2024-11-18 21:13:30,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:13:30,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805265328] [2024-11-18 21:13:30,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:13:30,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:13:30,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:13:30,615 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 2178 trivial. 0 not checked. [2024-11-18 21:13:30,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:13:30,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805265328] [2024-11-18 21:13:30,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805265328] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 21:13:30,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886376721] [2024-11-18 21:13:30,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:13:30,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 21:13:30,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 21:13:30,622 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) [2024-11-18 21:13:30,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 21:13:30,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:13:30,934 INFO L255 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 21:13:30,944 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 21:13:30,977 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 2178 trivial. 0 not checked. [2024-11-18 21:13:30,977 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 21:13:30,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [886376721] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:13:30,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 21:13:30,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-18 21:13:30,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725589934] [2024-11-18 21:13:30,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:13:30,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 21:13:30,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:13:31,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 21:13:31,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 21:13:31,010 INFO L87 Difference]: Start difference. First operand has 106 states, 69 states have (on average 1.434782608695652) internal successors, (99), 70 states have internal predecessors, (99), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Second operand has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 2 states have call successors, (34) [2024-11-18 21:13:31,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:13:31,053 INFO L93 Difference]: Finished difference Result 205 states and 362 transitions. [2024-11-18 21:13:31,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 21:13:31,056 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 2 states have call successors, (34) Word has length 217 [2024-11-18 21:13:31,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:13:31,067 INFO L225 Difference]: With dead ends: 205 [2024-11-18 21:13:31,067 INFO L226 Difference]: Without dead ends: 102 [2024-11-18 21:13:31,073 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 21:13:31,078 INFO L432 NwaCegarLoop]: 159 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, 159 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 [2024-11-18 21:13:31,079 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 21:13:31,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-11-18 21:13:31,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2024-11-18 21:13:31,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 66 states have (on average 1.378787878787879) internal successors, (91), 66 states have internal predecessors, (91), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-11-18 21:13:31,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 159 transitions. [2024-11-18 21:13:31,142 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 159 transitions. Word has length 217 [2024-11-18 21:13:31,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:13:31,143 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 159 transitions. [2024-11-18 21:13:31,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 2 states have call successors, (34) [2024-11-18 21:13:31,143 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 159 transitions. [2024-11-18 21:13:31,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2024-11-18 21:13:31,152 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:13:31,153 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 21:13:31,169 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-18 21:13:31,354 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 [2024-11-18 21:13:31,354 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:13:31,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:13:31,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1922861391, now seen corresponding path program 1 times [2024-11-18 21:13:31,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:13:31,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184690044] [2024-11-18 21:13:31,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:13:31,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:13:31,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:13:32,764 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-18 21:13:32,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:13:32,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184690044] [2024-11-18 21:13:32,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184690044] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:13:32,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:13:32,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 21:13:32,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947816864] [2024-11-18 21:13:32,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:13:32,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 21:13:32,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:13:32,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 21:13:32,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 21:13:32,776 INFO L87 Difference]: Start difference. First operand 102 states and 159 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-18 21:13:32,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:13:32,995 INFO L93 Difference]: Finished difference Result 202 states and 317 transitions. [2024-11-18 21:13:32,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 21:13:32,997 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 217 [2024-11-18 21:13:32,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:13:32,999 INFO L225 Difference]: With dead ends: 202 [2024-11-18 21:13:33,000 INFO L226 Difference]: Without dead ends: 103 [2024-11-18 21:13:33,001 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 21:13:33,002 INFO L432 NwaCegarLoop]: 152 mSDtfsCounter, 85 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 21:13:33,002 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 229 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 21:13:33,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-11-18 21:13:33,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2024-11-18 21:13:33,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 67 states have (on average 1.373134328358209) internal successors, (92), 67 states have internal predecessors, (92), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-11-18 21:13:33,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 160 transitions. [2024-11-18 21:13:33,019 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 160 transitions. Word has length 217 [2024-11-18 21:13:33,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:13:33,021 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 160 transitions. [2024-11-18 21:13:33,021 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-18 21:13:33,021 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 160 transitions. [2024-11-18 21:13:33,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2024-11-18 21:13:33,025 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:13:33,025 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 21:13:33,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 21:13:33,025 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:13:33,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:13:33,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1653562041, now seen corresponding path program 1 times [2024-11-18 21:13:33,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:13:33,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672796354] [2024-11-18 21:13:33,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:13:33,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:13:33,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:13:34,080 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-18 21:13:34,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:13:34,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672796354] [2024-11-18 21:13:34,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672796354] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:13:34,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:13:34,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 21:13:34,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503865024] [2024-11-18 21:13:34,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:13:34,083 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 21:13:34,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:13:34,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 21:13:34,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 21:13:34,084 INFO L87 Difference]: Start difference. First operand 103 states and 160 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-18 21:13:34,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:13:34,740 INFO L93 Difference]: Finished difference Result 315 states and 500 transitions. [2024-11-18 21:13:34,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 21:13:34,744 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 218 [2024-11-18 21:13:34,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:13:34,747 INFO L225 Difference]: With dead ends: 315 [2024-11-18 21:13:34,747 INFO L226 Difference]: Without dead ends: 215 [2024-11-18 21:13:34,748 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-18 21:13:34,749 INFO L432 NwaCegarLoop]: 156 mSDtfsCounter, 165 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 21:13:34,750 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 419 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 21:13:34,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2024-11-18 21:13:34,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 188. [2024-11-18 21:13:34,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 117 states have (on average 1.3675213675213675) internal successors, (160), 117 states have internal predecessors, (160), 68 states have call successors, (68), 2 states have call predecessors, (68), 2 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2024-11-18 21:13:34,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 296 transitions. [2024-11-18 21:13:34,799 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 296 transitions. Word has length 218 [2024-11-18 21:13:34,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:13:34,800 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 296 transitions. [2024-11-18 21:13:34,801 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-18 21:13:34,801 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 296 transitions. [2024-11-18 21:13:34,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2024-11-18 21:13:34,804 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:13:34,804 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 21:13:34,804 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 21:13:34,805 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:13:34,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:13:34,805 INFO L85 PathProgramCache]: Analyzing trace with hash -340582665, now seen corresponding path program 1 times [2024-11-18 21:13:34,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:13:34,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189198136] [2024-11-18 21:13:34,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:13:34,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:13:34,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:13:36,189 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-18 21:13:36,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:13:36,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189198136] [2024-11-18 21:13:36,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189198136] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:13:36,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:13:36,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 21:13:36,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508328627] [2024-11-18 21:13:36,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:13:36,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 21:13:36,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:13:36,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 21:13:36,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-18 21:13:36,196 INFO L87 Difference]: Start difference. First operand 188 states and 296 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-18 21:13:37,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:13:37,590 INFO L93 Difference]: Finished difference Result 528 states and 828 transitions. [2024-11-18 21:13:37,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 21:13:37,591 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 218 [2024-11-18 21:13:37,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:13:37,595 INFO L225 Difference]: With dead ends: 528 [2024-11-18 21:13:37,596 INFO L226 Difference]: Without dead ends: 423 [2024-11-18 21:13:37,597 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-18 21:13:37,597 INFO L432 NwaCegarLoop]: 230 mSDtfsCounter, 389 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 871 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 712 SdHoareTripleChecker+Invalid, 968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-18 21:13:37,598 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [389 Valid, 712 Invalid, 968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 871 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-18 21:13:37,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2024-11-18 21:13:37,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 401. [2024-11-18 21:13:37,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 253 states have (on average 1.3280632411067195) internal successors, (336), 255 states have internal predecessors, (336), 142 states have call successors, (142), 5 states have call predecessors, (142), 5 states have return successors, (142), 140 states have call predecessors, (142), 142 states have call successors, (142) [2024-11-18 21:13:37,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 620 transitions. [2024-11-18 21:13:37,685 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 620 transitions. Word has length 218 [2024-11-18 21:13:37,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:13:37,686 INFO L471 AbstractCegarLoop]: Abstraction has 401 states and 620 transitions. [2024-11-18 21:13:37,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-18 21:13:37,686 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 620 transitions. [2024-11-18 21:13:37,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2024-11-18 21:13:37,689 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:13:37,690 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 21:13:37,690 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 21:13:37,690 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:13:37,691 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:13:37,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1000778015, now seen corresponding path program 1 times [2024-11-18 21:13:37,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:13:37,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936929678] [2024-11-18 21:13:37,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:13:37,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:13:37,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat