./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-44.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-44.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 bd18df5335c166ad57722e76e66445ba6bc9802d8c865b1ba91e68124487e889 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 09:26:58,466 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 09:26:58,537 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-24 09:26:58,543 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 09:26:58,546 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 09:26:58,574 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 09:26:58,575 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 09:26:58,575 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 09:26:58,576 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 09:26:58,578 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 09:26:58,578 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 09:26:58,579 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 09:26:58,579 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 09:26:58,581 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 09:26:58,581 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 09:26:58,582 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 09:26:58,582 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 09:26:58,582 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 09:26:58,583 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 09:26:58,583 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 09:26:58,585 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 09:26:58,586 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 09:26:58,586 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 09:26:58,586 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 09:26:58,587 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 09:26:58,587 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 09:26:58,587 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 09:26:58,588 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 09:26:58,588 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 09:26:58,588 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 09:26:58,588 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 09:26:58,588 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 09:26:58,589 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 09:26:58,589 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 09:26:58,589 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 09:26:58,590 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 09:26:58,590 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 09:26:58,591 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 09:26:58,591 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 09:26:58,591 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 09:26:58,592 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 09:26:58,592 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 09:26:58,592 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bd18df5335c166ad57722e76e66445ba6bc9802d8c865b1ba91e68124487e889 [2024-10-24 09:26:58,814 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 09:26:58,833 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 09:26:58,836 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 09:26:58,837 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 09:26:58,837 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 09:26:58,838 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-44.i [2024-10-24 09:27:00,286 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 09:27:00,489 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 09:27:00,490 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-44.i [2024-10-24 09:27:00,499 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05f8bf04b/d4c4ab60e41d4ae8a9dbb5b45defa153/FLAG1fc1997d2 [2024-10-24 09:27:00,864 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05f8bf04b/d4c4ab60e41d4ae8a9dbb5b45defa153 [2024-10-24 09:27:00,867 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 09:27:00,868 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 09:27:00,869 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 09:27:00,870 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 09:27:00,877 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 09:27:00,878 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:27:00" (1/1) ... [2024-10-24 09:27:00,879 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e045854 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:27:00, skipping insertion in model container [2024-10-24 09:27:00,879 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:27:00" (1/1) ... [2024-10-24 09:27:00,905 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 09:27:01,064 WARN L248 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_loopvsstraightlinecode_25-1loop_file-44.i[915,928] [2024-10-24 09:27:01,120 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 09:27:01,129 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 09:27:01,141 WARN L248 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_loopvsstraightlinecode_25-1loop_file-44.i[915,928] [2024-10-24 09:27:01,162 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 09:27:01,179 INFO L204 MainTranslator]: Completed translation [2024-10-24 09:27:01,180 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:27:01 WrapperNode [2024-10-24 09:27:01,180 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 09:27:01,181 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 09:27:01,181 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 09:27:01,181 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 09:27:01,188 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:27:01" (1/1) ... [2024-10-24 09:27:01,195 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:27:01" (1/1) ... [2024-10-24 09:27:01,230 INFO L138 Inliner]: procedures = 26, calls = 34, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 141 [2024-10-24 09:27:01,231 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 09:27:01,232 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 09:27:01,232 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 09:27:01,232 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 09:27:01,243 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:27:01" (1/1) ... [2024-10-24 09:27:01,243 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:27:01" (1/1) ... [2024-10-24 09:27:01,246 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:27:01" (1/1) ... [2024-10-24 09:27:01,266 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]. [2024-10-24 09:27:01,266 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:27:01" (1/1) ... [2024-10-24 09:27:01,267 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:27:01" (1/1) ... [2024-10-24 09:27:01,274 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:27:01" (1/1) ... [2024-10-24 09:27:01,277 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:27:01" (1/1) ... [2024-10-24 09:27:01,279 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:27:01" (1/1) ... [2024-10-24 09:27:01,288 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:27:01" (1/1) ... [2024-10-24 09:27:01,295 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 09:27:01,296 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 09:27:01,296 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 09:27:01,297 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 09:27:01,298 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:27:01" (1/1) ... [2024-10-24 09:27:01,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 09:27:01,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 09:27:01,330 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) [2024-10-24 09:27:01,334 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 [2024-10-24 09:27:01,379 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 09:27:01,379 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-10-24 09:27:01,379 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-10-24 09:27:01,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 09:27:01,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 09:27:01,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 09:27:01,459 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 09:27:01,463 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 09:27:01,798 INFO L? ?]: Removed 17 outVars from TransFormulas that were not future-live. [2024-10-24 09:27:01,799 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 09:27:01,838 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 09:27:01,838 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-24 09:27:01,839 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:27:01 BoogieIcfgContainer [2024-10-24 09:27:01,840 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 09:27:01,842 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 09:27:01,843 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 09:27:01,846 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 09:27:01,847 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:27:00" (1/3) ... [2024-10-24 09:27:01,848 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b7869e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:27:01, skipping insertion in model container [2024-10-24 09:27:01,848 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:27:01" (2/3) ... [2024-10-24 09:27:01,848 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b7869e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:27:01, skipping insertion in model container [2024-10-24 09:27:01,849 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:27:01" (3/3) ... [2024-10-24 09:27:01,850 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-1loop_file-44.i [2024-10-24 09:27:01,869 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 09:27:01,870 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-24 09:27:01,937 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 09:27:01,946 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;@67699fe1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 09:27:01,946 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-24 09:27:01,951 INFO L276 IsEmpty]: Start isEmpty. Operand has 57 states, 33 states have (on average 1.3636363636363635) internal successors, (45), 34 states have internal predecessors, (45), 21 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-10-24 09:27:01,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-10-24 09:27:01,966 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 09:27:01,966 INFO L215 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 09:27:01,967 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 09:27:01,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 09:27:01,973 INFO L85 PathProgramCache]: Analyzing trace with hash 583432601, now seen corresponding path program 1 times [2024-10-24 09:27:01,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 09:27:01,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969989898] [2024-10-24 09:27:01,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 09:27:01,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 09:27:02,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:27:02,245 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 09:27:02,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:27:02,259 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 09:27:02,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:27:02,268 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-24 09:27:02,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:27:02,277 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-24 09:27:02,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:27:02,283 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-24 09:27:02,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:27:02,292 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-24 09:27:02,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:27:02,300 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-24 09:27:02,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:27:02,310 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-24 09:27:02,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:27:02,314 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-10-24 09:27:02,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:27:02,319 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-24 09:27:02,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:27:02,325 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-24 09:27:02,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:27:02,332 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-24 09:27:02,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:27:02,339 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-24 09:27:02,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:27:02,347 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-10-24 09:27:02,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:27:02,354 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-24 09:27:02,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:27:02,360 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-10-24 09:27:02,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:27:02,370 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-10-24 09:27:02,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:27:02,376 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-10-24 09:27:02,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:27:02,380 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-10-24 09:27:02,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:27:02,385 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-10-24 09:27:02,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:27:02,389 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-10-24 09:27:02,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:27:02,398 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-10-24 09:27:02,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 09:27:02,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969989898] [2024-10-24 09:27:02,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969989898] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 09:27:02,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 09:27:02,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 09:27:02,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143163022] [2024-10-24 09:27:02,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 09:27:02,407 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-24 09:27:02,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 09:27:02,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-24 09:27:02,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-24 09:27:02,434 INFO L87 Difference]: Start difference. First operand has 57 states, 33 states have (on average 1.3636363636363635) internal successors, (45), 34 states have internal predecessors, (45), 21 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) Second operand has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 2 states have call successors, (21) [2024-10-24 09:27:02,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 09:27:02,512 INFO L93 Difference]: Finished difference Result 113 states and 194 transitions. [2024-10-24 09:27:02,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-24 09:27:02,516 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 2 states have call successors, (21) Word has length 128 [2024-10-24 09:27:02,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 09:27:02,528 INFO L225 Difference]: With dead ends: 113 [2024-10-24 09:27:02,529 INFO L226 Difference]: Without dead ends: 55 [2024-10-24 09:27:02,533 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-24 09:27:02,552 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 09:27:02,554 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 79 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 09:27:02,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-10-24 09:27:02,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2024-10-24 09:27:02,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 32 states have (on average 1.25) internal successors, (40), 32 states have internal predecessors, (40), 21 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-10-24 09:27:02,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 82 transitions. [2024-10-24 09:27:02,594 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 82 transitions. Word has length 128 [2024-10-24 09:27:02,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 09:27:02,595 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 82 transitions. [2024-10-24 09:27:02,595 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 2 states have call successors, (21) [2024-10-24 09:27:02,596 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 82 transitions. [2024-10-24 09:27:02,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-10-24 09:27:02,600 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 09:27:02,600 INFO L215 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 09:27:02,600 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 09:27:02,601 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 09:27:02,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 09:27:02,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1497503017, now seen corresponding path program 1 times [2024-10-24 09:27:02,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 09:27:02,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292234073] [2024-10-24 09:27:02,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 09:27:02,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 09:27:02,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:28:16,677 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 09:28:16,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:28:16,681 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 09:28:16,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:28:16,683 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-24 09:28:16,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:28:16,685 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-24 09:28:16,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:28:16,687 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-24 09:28:16,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:28:16,688 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-24 09:28:16,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:28:16,690 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-24 09:28:16,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:28:16,692 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-24 09:28:16,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:28:16,694 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-10-24 09:28:16,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:28:16,695 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-24 09:28:16,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:28:16,697 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-24 09:28:16,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:28:16,703 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-24 09:28:16,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:28:16,705 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-24 09:28:16,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:28:16,711 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-10-24 09:28:16,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:28:16,713 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-24 09:28:16,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:28:16,715 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-10-24 09:28:16,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:28:16,721 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-10-24 09:28:16,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:28:16,723 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-10-24 09:28:16,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:28:16,728 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-10-24 09:28:16,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:28:16,732 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-10-24 09:28:16,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:28:16,735 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-10-24 09:28:16,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:28:16,739 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-10-24 09:28:16,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 09:28:16,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292234073] [2024-10-24 09:28:16,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292234073] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 09:28:16,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 09:28:16,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 09:28:16,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926516901] [2024-10-24 09:28:16,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 09:28:16,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 09:28:16,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 09:28:16,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 09:28:16,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-10-24 09:28:16,747 INFO L87 Difference]: Start difference. First operand 55 states and 82 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2024-10-24 09:28:17,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 09:28:17,439 INFO L93 Difference]: Finished difference Result 139 states and 203 transitions. [2024-10-24 09:28:17,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 09:28:17,440 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 128 [2024-10-24 09:28:17,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 09:28:17,443 INFO L225 Difference]: With dead ends: 139 [2024-10-24 09:28:17,443 INFO L226 Difference]: Without dead ends: 85 [2024-10-24 09:28:17,444 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-10-24 09:28:17,445 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 92 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 09:28:17,446 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 237 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 09:28:17,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-10-24 09:28:17,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 75. [2024-10-24 09:28:17,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 44 states have (on average 1.2272727272727273) internal successors, (54), 45 states have internal predecessors, (54), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2024-10-24 09:28:17,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 110 transitions. [2024-10-24 09:28:17,479 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 110 transitions. Word has length 128 [2024-10-24 09:28:17,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 09:28:17,480 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 110 transitions. [2024-10-24 09:28:17,480 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2024-10-24 09:28:17,480 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 110 transitions. [2024-10-24 09:28:17,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-10-24 09:28:17,482 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 09:28:17,482 INFO L215 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 09:28:17,483 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 09:28:17,483 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 09:28:17,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 09:28:17,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1434116668, now seen corresponding path program 1 times [2024-10-24 09:28:17,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 09:28:17,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486736012] [2024-10-24 09:28:17,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 09:28:17,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 09:28:17,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat