./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops-crafted-1/nested3-1_abstracted.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d 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/loops-crafted-1/nested3-1_abstracted.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 898ef25fdb2ae04f56304d500631f410c196b9a77fbfba6f83248dcfc33b301f --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 06:52:02,149 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 06:52:02,204 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 06:52:02,209 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 06:52:02,209 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 06:52:02,233 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 06:52:02,235 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 06:52:02,235 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 06:52:02,236 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 06:52:02,237 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 06:52:02,237 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 06:52:02,238 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 06:52:02,238 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 06:52:02,238 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 06:52:02,240 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 06:52:02,240 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 06:52:02,241 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 06:52:02,241 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 06:52:02,241 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 06:52:02,241 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 06:52:02,242 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 06:52:02,242 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 06:52:02,245 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 06:52:02,246 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 06:52:02,246 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 06:52:02,246 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 06:52:02,246 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 06:52:02,246 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 06:52:02,247 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 06:52:02,247 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 06:52:02,247 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 06:52:02,247 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 06:52:02,247 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 06:52:02,247 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 06:52:02,248 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 06:52:02,248 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 06:52:02,248 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 06:52:02,248 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 06:52:02,248 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 06:52:02,248 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 06:52:02,249 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 06:52:02,249 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 06:52:02,249 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 898ef25fdb2ae04f56304d500631f410c196b9a77fbfba6f83248dcfc33b301f [2024-11-16 06:52:02,424 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 06:52:02,443 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 06:52:02,445 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 06:52:02,446 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 06:52:02,446 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 06:52:02,447 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops-crafted-1/nested3-1_abstracted.c [2024-11-16 06:52:03,656 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 06:52:03,783 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 06:52:03,784 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/nested3-1_abstracted.c [2024-11-16 06:52:03,791 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6fd3c73d1/82ad0823a15c4f119a11225121e3ea76/FLAG27983eb08 [2024-11-16 06:52:04,206 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6fd3c73d1/82ad0823a15c4f119a11225121e3ea76 [2024-11-16 06:52:04,208 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 06:52:04,209 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 06:52:04,210 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 06:52:04,210 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 06:52:04,214 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 06:52:04,214 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 06:52:04" (1/1) ... [2024-11-16 06:52:04,215 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@297a8304 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:52:04, skipping insertion in model container [2024-11-16 06:52:04,215 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 06:52:04" (1/1) ... [2024-11-16 06:52:04,229 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 06:52:04,356 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/loops-crafted-1/nested3-1_abstracted.c[739,752] [2024-11-16 06:52:04,368 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 06:52:04,375 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 06:52:04,384 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/loops-crafted-1/nested3-1_abstracted.c[739,752] [2024-11-16 06:52:04,387 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 06:52:04,400 INFO L204 MainTranslator]: Completed translation [2024-11-16 06:52:04,401 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:52:04 WrapperNode [2024-11-16 06:52:04,401 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 06:52:04,402 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 06:52:04,402 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 06:52:04,402 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 06:52:04,408 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:52:04" (1/1) ... [2024-11-16 06:52:04,413 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:52:04" (1/1) ... [2024-11-16 06:52:04,425 INFO L138 Inliner]: procedures = 20, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 44 [2024-11-16 06:52:04,425 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 06:52:04,426 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 06:52:04,426 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 06:52:04,426 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 06:52:04,432 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:52:04" (1/1) ... [2024-11-16 06:52:04,432 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:52:04" (1/1) ... [2024-11-16 06:52:04,433 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:52:04" (1/1) ... [2024-11-16 06:52:04,440 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]. [2024-11-16 06:52:04,440 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:52:04" (1/1) ... [2024-11-16 06:52:04,442 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:52:04" (1/1) ... [2024-11-16 06:52:04,444 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:52:04" (1/1) ... [2024-11-16 06:52:04,446 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:52:04" (1/1) ... [2024-11-16 06:52:04,446 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:52:04" (1/1) ... [2024-11-16 06:52:04,447 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:52:04" (1/1) ... [2024-11-16 06:52:04,448 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 06:52:04,448 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 06:52:04,448 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 06:52:04,448 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 06:52:04,449 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:52:04" (1/1) ... [2024-11-16 06:52:04,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 06:52:04,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:52:04,472 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) [2024-11-16 06:52:04,477 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 [2024-11-16 06:52:04,504 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 06:52:04,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 06:52:04,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 06:52:04,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 06:52:04,505 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-16 06:52:04,505 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-16 06:52:04,549 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 06:52:04,551 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 06:52:04,665 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2024-11-16 06:52:04,665 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 06:52:04,677 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 06:52:04,677 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 06:52:04,677 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 06:52:04 BoogieIcfgContainer [2024-11-16 06:52:04,678 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 06:52:04,680 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 06:52:04,680 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 06:52:04,683 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 06:52:04,683 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 06:52:04" (1/3) ... [2024-11-16 06:52:04,684 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30e4f4c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 06:52:04, skipping insertion in model container [2024-11-16 06:52:04,684 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:52:04" (2/3) ... [2024-11-16 06:52:04,684 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30e4f4c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 06:52:04, skipping insertion in model container [2024-11-16 06:52:04,685 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 06:52:04" (3/3) ... [2024-11-16 06:52:04,686 INFO L112 eAbstractionObserver]: Analyzing ICFG nested3-1_abstracted.c [2024-11-16 06:52:04,700 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 06:52:04,701 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 06:52:04,815 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 06:52:04,820 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;@466b3b72, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 06:52:04,821 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 06:52:04,824 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 22 states have internal predecessors, (31), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-16 06:52:04,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-16 06:52:04,831 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:52:04,831 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:52:04,832 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:52:04,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:52:04,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1379845673, now seen corresponding path program 1 times [2024-11-16 06:52:04,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:52:04,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670225523] [2024-11-16 06:52:04,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:52:04,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:52:04,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:04,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:52:04,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:52:04,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670225523] [2024-11-16 06:52:04,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670225523] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:52:04,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 06:52:04,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 06:52:04,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604053158] [2024-11-16 06:52:04,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:52:04,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 06:52:04,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:52:04,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 06:52:04,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 06:52:04,982 INFO L87 Difference]: Start difference. First operand has 27 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 22 states have internal predecessors, (31), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:04,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:52:04,998 INFO L93 Difference]: Finished difference Result 51 states and 74 transitions. [2024-11-16 06:52:05,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 06:52:05,001 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-16 06:52:05,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:52:05,006 INFO L225 Difference]: With dead ends: 51 [2024-11-16 06:52:05,006 INFO L226 Difference]: Without dead ends: 22 [2024-11-16 06:52:05,009 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 06:52:05,013 INFO L432 NwaCegarLoop]: 31 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, 31 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 [2024-11-16 06:52:05,015 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:52:05,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-16 06:52:05,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2024-11-16 06:52:05,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 18 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-16 06:52:05,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2024-11-16 06:52:05,044 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 8 [2024-11-16 06:52:05,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:52:05,044 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2024-11-16 06:52:05,044 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:05,044 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2024-11-16 06:52:05,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-16 06:52:05,046 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:52:05,046 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:52:05,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 06:52:05,047 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:52:05,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:52:05,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1518119545, now seen corresponding path program 1 times [2024-11-16 06:52:05,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:52:05,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626335220] [2024-11-16 06:52:05,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:52:05,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:52:05,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:05,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:52:05,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:52:05,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626335220] [2024-11-16 06:52:05,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626335220] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:52:05,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 06:52:05,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 06:52:05,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890582956] [2024-11-16 06:52:05,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:52:05,157 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 06:52:05,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:52:05,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 06:52:05,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 06:52:05,158 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:05,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:52:05,176 INFO L93 Difference]: Finished difference Result 42 states and 52 transitions. [2024-11-16 06:52:05,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 06:52:05,177 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-16 06:52:05,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:52:05,177 INFO L225 Difference]: With dead ends: 42 [2024-11-16 06:52:05,177 INFO L226 Difference]: Without dead ends: 34 [2024-11-16 06:52:05,178 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 06:52:05,178 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 11 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 50 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 [2024-11-16 06:52:05,179 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 50 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:52:05,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-16 06:52:05,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 24. [2024-11-16 06:52:05,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.263157894736842) internal successors, (24), 20 states have internal predecessors, (24), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-16 06:52:05,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2024-11-16 06:52:05,186 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 9 [2024-11-16 06:52:05,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:52:05,186 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2024-11-16 06:52:05,186 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:05,186 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2024-11-16 06:52:05,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-16 06:52:05,187 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:52:05,187 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:52:05,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 06:52:05,187 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:52:05,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:52:05,188 INFO L85 PathProgramCache]: Analyzing trace with hash 317001002, now seen corresponding path program 1 times [2024-11-16 06:52:05,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:52:05,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442899066] [2024-11-16 06:52:05,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:52:05,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:52:05,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:05,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:52:05,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:52:05,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442899066] [2024-11-16 06:52:05,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442899066] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:52:05,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 06:52:05,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 06:52:05,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500732680] [2024-11-16 06:52:05,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:52:05,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 06:52:05,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:52:05,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 06:52:05,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 06:52:05,253 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:05,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:52:05,267 INFO L93 Difference]: Finished difference Result 52 states and 66 transitions. [2024-11-16 06:52:05,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 06:52:05,269 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-16 06:52:05,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:52:05,270 INFO L225 Difference]: With dead ends: 52 [2024-11-16 06:52:05,270 INFO L226 Difference]: Without dead ends: 32 [2024-11-16 06:52:05,270 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 06:52:05,271 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 7 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 48 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 [2024-11-16 06:52:05,271 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 48 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:52:05,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-16 06:52:05,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 26. [2024-11-16 06:52:05,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 22 states have internal predecessors, (26), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-16 06:52:05,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2024-11-16 06:52:05,277 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 11 [2024-11-16 06:52:05,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:52:05,278 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2024-11-16 06:52:05,278 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:05,278 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2024-11-16 06:52:05,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-16 06:52:05,278 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:52:05,278 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:52:05,278 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 06:52:05,278 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:52:05,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:52:05,279 INFO L85 PathProgramCache]: Analyzing trace with hash -2021619657, now seen corresponding path program 1 times [2024-11-16 06:52:05,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:52:05,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705544927] [2024-11-16 06:52:05,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:52:05,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:52:05,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:05,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:52:05,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:52:05,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705544927] [2024-11-16 06:52:05,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705544927] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:52:05,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 06:52:05,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 06:52:05,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504288317] [2024-11-16 06:52:05,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:52:05,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 06:52:05,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:52:05,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 06:52:05,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 06:52:05,338 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:05,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:52:05,350 INFO L93 Difference]: Finished difference Result 48 states and 58 transitions. [2024-11-16 06:52:05,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 06:52:05,352 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-16 06:52:05,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:52:05,353 INFO L225 Difference]: With dead ends: 48 [2024-11-16 06:52:05,353 INFO L226 Difference]: Without dead ends: 26 [2024-11-16 06:52:05,353 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 06:52:05,354 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 06:52:05,354 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:52:05,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-16 06:52:05,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2024-11-16 06:52:05,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 22 states have internal predecessors, (25), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-16 06:52:05,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2024-11-16 06:52:05,357 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 12 [2024-11-16 06:52:05,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:52:05,357 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2024-11-16 06:52:05,357 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:05,358 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2024-11-16 06:52:05,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-16 06:52:05,358 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:52:05,358 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:52:05,358 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 06:52:05,358 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:52:05,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:52:05,359 INFO L85 PathProgramCache]: Analyzing trace with hash 94286828, now seen corresponding path program 1 times [2024-11-16 06:52:05,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:52:05,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282816969] [2024-11-16 06:52:05,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:52:05,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:52:05,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:05,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:52:05,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:52:05,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282816969] [2024-11-16 06:52:05,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282816969] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:52:05,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 06:52:05,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 06:52:05,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089459147] [2024-11-16 06:52:05,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:52:05,503 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 06:52:05,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:52:05,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 06:52:05,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-16 06:52:05,504 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:05,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:52:05,591 INFO L93 Difference]: Finished difference Result 54 states and 62 transitions. [2024-11-16 06:52:05,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 06:52:05,591 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-16 06:52:05,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:52:05,592 INFO L225 Difference]: With dead ends: 54 [2024-11-16 06:52:05,592 INFO L226 Difference]: Without dead ends: 32 [2024-11-16 06:52:05,592 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-16 06:52:05,593 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 18 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 06:52:05,593 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 97 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:52:05,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-16 06:52:05,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2024-11-16 06:52:05,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 24 states have (on average 1.125) internal successors, (27), 25 states have internal predecessors, (27), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-16 06:52:05,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2024-11-16 06:52:05,606 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 15 [2024-11-16 06:52:05,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:52:05,606 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2024-11-16 06:52:05,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:05,607 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2024-11-16 06:52:05,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-16 06:52:05,607 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:52:05,607 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:52:05,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 06:52:05,608 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:52:05,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:52:05,608 INFO L85 PathProgramCache]: Analyzing trace with hash -2048495081, now seen corresponding path program 1 times [2024-11-16 06:52:05,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:52:05,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071010374] [2024-11-16 06:52:05,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:52:05,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:52:05,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:05,714 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-16 06:52:05,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:05,723 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:52:05,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:52:05,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071010374] [2024-11-16 06:52:05,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071010374] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:52:05,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352756814] [2024-11-16 06:52:05,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:52:05,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:52:05,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:52:05,727 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) [2024-11-16 06:52:05,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 06:52:05,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:05,774 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-16 06:52:05,777 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:52:05,829 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:52:05,829 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:52:05,940 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:52:05,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1352756814] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:52:05,941 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:52:05,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 11 [2024-11-16 06:52:05,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030773007] [2024-11-16 06:52:05,941 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:52:05,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-16 06:52:05,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:52:05,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-16 06:52:05,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-16 06:52:05,943 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 9 states have internal predecessors, (37), 5 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-16 06:52:06,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:52:06,061 INFO L93 Difference]: Finished difference Result 87 states and 98 transitions. [2024-11-16 06:52:06,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 06:52:06,062 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 9 states have internal predecessors, (37), 5 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 23 [2024-11-16 06:52:06,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:52:06,062 INFO L225 Difference]: With dead ends: 87 [2024-11-16 06:52:06,062 INFO L226 Difference]: Without dead ends: 61 [2024-11-16 06:52:06,063 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-11-16 06:52:06,064 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 20 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:52:06,064 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 312 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:52:06,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-16 06:52:06,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 51. [2024-11-16 06:52:06,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 41 states have (on average 1.0975609756097562) internal successors, (45), 43 states have internal predecessors, (45), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-16 06:52:06,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 56 transitions. [2024-11-16 06:52:06,079 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 56 transitions. Word has length 23 [2024-11-16 06:52:06,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:52:06,080 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 56 transitions. [2024-11-16 06:52:06,080 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 9 states have internal predecessors, (37), 5 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-16 06:52:06,080 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 56 transitions. [2024-11-16 06:52:06,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-16 06:52:06,081 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:52:06,081 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:52:06,093 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-16 06:52:06,282 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,SelfDestructingSolverStorable5 [2024-11-16 06:52:06,283 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:52:06,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:52:06,283 INFO L85 PathProgramCache]: Analyzing trace with hash 2101271428, now seen corresponding path program 2 times [2024-11-16 06:52:06,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:52:06,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177617154] [2024-11-16 06:52:06,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:52:06,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:52:06,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:06,383 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-16 06:52:06,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:06,386 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-16 06:52:06,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:06,389 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 06:52:06,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:52:06,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177617154] [2024-11-16 06:52:06,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177617154] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:52:06,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [872687317] [2024-11-16 06:52:06,390 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 06:52:06,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:52:06,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:52:06,391 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:52:06,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 06:52:06,430 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 06:52:06,430 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:52:06,431 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-16 06:52:06,432 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:52:06,474 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 06:52:06,474 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:52:06,572 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 06:52:06,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [872687317] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:52:06,573 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:52:06,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-11-16 06:52:06,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344319272] [2024-11-16 06:52:06,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:52:06,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-16 06:52:06,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:52:06,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-16 06:52:06,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2024-11-16 06:52:06,574 INFO L87 Difference]: Start difference. First operand 51 states and 56 transitions. Second operand has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-16 06:52:06,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:52:06,666 INFO L93 Difference]: Finished difference Result 130 states and 148 transitions. [2024-11-16 06:52:06,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 06:52:06,668 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 35 [2024-11-16 06:52:06,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:52:06,671 INFO L225 Difference]: With dead ends: 130 [2024-11-16 06:52:06,671 INFO L226 Difference]: Without dead ends: 83 [2024-11-16 06:52:06,672 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2024-11-16 06:52:06,674 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 25 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 06:52:06,674 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 151 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:52:06,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-11-16 06:52:06,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2024-11-16 06:52:06,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 69 states have (on average 1.0579710144927537) internal successors, (73), 71 states have internal predecessors, (73), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-16 06:52:06,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 92 transitions. [2024-11-16 06:52:06,697 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 92 transitions. Word has length 35 [2024-11-16 06:52:06,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:52:06,698 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 92 transitions. [2024-11-16 06:52:06,698 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-16 06:52:06,698 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 92 transitions. [2024-11-16 06:52:06,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-16 06:52:06,699 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:52:06,700 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:52:06,712 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-16 06:52:06,900 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-16 06:52:06,900 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:52:06,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:52:06,901 INFO L85 PathProgramCache]: Analyzing trace with hash -2010141128, now seen corresponding path program 3 times [2024-11-16 06:52:06,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:52:06,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142140384] [2024-11-16 06:52:06,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:52:06,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:52:06,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:07,102 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-16 06:52:07,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:07,106 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-16 06:52:07,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:07,108 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-16 06:52:07,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:07,111 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-11-16 06:52:07,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:07,113 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-11-16 06:52:07,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:07,117 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-11-16 06:52:07,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:07,120 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 12 proven. 132 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-16 06:52:07,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:52:07,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142140384] [2024-11-16 06:52:07,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142140384] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:52:07,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046395951] [2024-11-16 06:52:07,127 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 06:52:07,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:52:07,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:52:07,129 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:52:07,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 06:52:07,182 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-16 06:52:07,182 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:52:07,182 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-16 06:52:07,184 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:52:07,364 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2024-11-16 06:52:07,364 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 06:52:07,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1046395951] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:52:07,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 06:52:07,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2024-11-16 06:52:07,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211668580] [2024-11-16 06:52:07,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:52:07,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 06:52:07,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:52:07,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 06:52:07,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2024-11-16 06:52:07,366 INFO L87 Difference]: Start difference. First operand 83 states and 92 transitions. Second operand has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-16 06:52:07,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:52:07,482 INFO L93 Difference]: Finished difference Result 90 states and 98 transitions. [2024-11-16 06:52:07,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 06:52:07,482 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 83 [2024-11-16 06:52:07,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:52:07,484 INFO L225 Difference]: With dead ends: 90 [2024-11-16 06:52:07,484 INFO L226 Difference]: Without dead ends: 85 [2024-11-16 06:52:07,484 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2024-11-16 06:52:07,485 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 12 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:52:07,487 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 145 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:52:07,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-11-16 06:52:07,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 72. [2024-11-16 06:52:07,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 61 states have (on average 1.0327868852459017) internal successors, (63), 61 states have internal predecessors, (63), 8 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-16 06:52:07,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 78 transitions. [2024-11-16 06:52:07,501 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 78 transitions. Word has length 83 [2024-11-16 06:52:07,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:52:07,501 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 78 transitions. [2024-11-16 06:52:07,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-16 06:52:07,502 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 78 transitions. [2024-11-16 06:52:07,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-16 06:52:07,503 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:52:07,503 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:52:07,521 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-16 06:52:07,707 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:52:07,708 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:52:07,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:52:07,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1603702559, now seen corresponding path program 1 times [2024-11-16 06:52:07,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:52:07,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421802984] [2024-11-16 06:52:07,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:52:07,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:52:07,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:07,881 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-16 06:52:07,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:07,886 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-16 06:52:07,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:07,888 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-16 06:52:07,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:07,890 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-11-16 06:52:07,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:07,893 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-11-16 06:52:07,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:07,899 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-11-16 06:52:07,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:07,901 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-16 06:52:07,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:07,902 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 16 proven. 132 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-16 06:52:07,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:52:07,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421802984] [2024-11-16 06:52:07,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421802984] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:52:07,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [169958404] [2024-11-16 06:52:07,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:52:07,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:52:07,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:52:07,906 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:52:07,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-16 06:52:07,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:07,957 INFO L255 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-16 06:52:07,959 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:52:08,083 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 14 proven. 54 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2024-11-16 06:52:08,083 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:52:08,310 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 64 proven. 4 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2024-11-16 06:52:08,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [169958404] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:52:08,310 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:52:08,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 6] total 17 [2024-11-16 06:52:08,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474135980] [2024-11-16 06:52:08,312 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:52:08,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-16 06:52:08,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:52:08,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-16 06:52:08,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2024-11-16 06:52:08,313 INFO L87 Difference]: Start difference. First operand 72 states and 78 transitions. Second operand has 17 states, 17 states have (on average 6.117647058823529) internal successors, (104), 17 states have internal predecessors, (104), 11 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 11 states have call predecessors, (13), 11 states have call successors, (13) [2024-11-16 06:52:08,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:52:08,825 INFO L93 Difference]: Finished difference Result 358 states and 409 transitions. [2024-11-16 06:52:08,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-16 06:52:08,825 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.117647058823529) internal successors, (104), 17 states have internal predecessors, (104), 11 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 11 states have call predecessors, (13), 11 states have call successors, (13) Word has length 91 [2024-11-16 06:52:08,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:52:08,827 INFO L225 Difference]: With dead ends: 358 [2024-11-16 06:52:08,827 INFO L226 Difference]: Without dead ends: 290 [2024-11-16 06:52:08,828 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 491 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=402, Invalid=1578, Unknown=0, NotChecked=0, Total=1980 [2024-11-16 06:52:08,829 INFO L432 NwaCegarLoop]: 102 mSDtfsCounter, 258 mSDsluCounter, 696 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 798 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 06:52:08,829 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 798 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 06:52:08,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2024-11-16 06:52:08,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 266. [2024-11-16 06:52:08,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 230 states have (on average 1.0217391304347827) internal successors, (235), 230 states have internal predecessors, (235), 33 states have call successors, (33), 3 states have call predecessors, (33), 2 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-11-16 06:52:08,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 300 transitions. [2024-11-16 06:52:08,867 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 300 transitions. Word has length 91 [2024-11-16 06:52:08,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:52:08,867 INFO L471 AbstractCegarLoop]: Abstraction has 266 states and 300 transitions. [2024-11-16 06:52:08,868 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.117647058823529) internal successors, (104), 17 states have internal predecessors, (104), 11 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 11 states have call predecessors, (13), 11 states have call successors, (13) [2024-11-16 06:52:08,868 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 300 transitions. [2024-11-16 06:52:08,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2024-11-16 06:52:08,873 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:52:08,873 INFO L215 NwaCegarLoop]: trace histogram [33, 32, 32, 32, 28, 28, 28, 28, 28, 28, 28, 28, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:52:08,886 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-16 06:52:09,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:52:09,074 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:52:09,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:52:09,074 INFO L85 PathProgramCache]: Analyzing trace with hash 555055395, now seen corresponding path program 2 times [2024-11-16 06:52:09,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:52:09,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830311716] [2024-11-16 06:52:09,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:52:09,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:52:09,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:09,485 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-16 06:52:09,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:09,488 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-16 06:52:09,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:09,490 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-16 06:52:09,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:09,491 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-11-16 06:52:09,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:09,493 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-11-16 06:52:09,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:09,495 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-11-16 06:52:09,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:09,497 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-11-16 06:52:09,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:09,499 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-11-16 06:52:09,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:09,502 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-11-16 06:52:09,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:09,505 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-11-16 06:52:09,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:09,507 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-11-16 06:52:09,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:09,508 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-11-16 06:52:09,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:09,510 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-11-16 06:52:09,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:09,512 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-11-16 06:52:09,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:09,513 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2024-11-16 06:52:09,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:09,514 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2024-11-16 06:52:09,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:09,516 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2024-11-16 06:52:09,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:09,518 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2024-11-16 06:52:09,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:09,520 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2024-11-16 06:52:09,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:09,521 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2024-11-16 06:52:09,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:09,523 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2024-11-16 06:52:09,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:09,525 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2024-11-16 06:52:09,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:09,528 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2024-11-16 06:52:09,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:09,530 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2024-11-16 06:52:09,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:09,531 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2024-11-16 06:52:09,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:09,532 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2024-11-16 06:52:09,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:09,534 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2024-11-16 06:52:09,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:09,536 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2024-11-16 06:52:09,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:09,538 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2024-11-16 06:52:09,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:09,543 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2024-11-16 06:52:09,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:09,544 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2024-11-16 06:52:09,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:09,546 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2024-11-16 06:52:09,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:09,550 INFO L134 CoverageAnalysis]: Checked inductivity of 5340 backedges. 1338 proven. 182 refuted. 0 times theorem prover too weak. 3820 trivial. 0 not checked. [2024-11-16 06:52:09,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:52:09,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830311716] [2024-11-16 06:52:09,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830311716] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:52:09,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689413232] [2024-11-16 06:52:09,550 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 06:52:09,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:52:09,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:52:09,552 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:52:09,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-16 06:52:09,672 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 06:52:09,672 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:52:09,675 INFO L255 TraceCheckSpWp]: Trace formula consists of 697 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-16 06:52:09,685 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:52:10,121 INFO L134 CoverageAnalysis]: Checked inductivity of 5340 backedges. 64 proven. 2722 refuted. 0 times theorem prover too weak. 2554 trivial. 0 not checked. [2024-11-16 06:52:10,122 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:52:10,905 INFO L134 CoverageAnalysis]: Checked inductivity of 5340 backedges. 166 proven. 2620 refuted. 0 times theorem prover too weak. 2554 trivial. 0 not checked. [2024-11-16 06:52:10,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [689413232] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:52:10,905 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:52:10,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 12] total 30 [2024-11-16 06:52:10,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068436548] [2024-11-16 06:52:10,906 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:52:10,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-16 06:52:10,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:52:10,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-16 06:52:10,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=686, Unknown=0, NotChecked=0, Total=870 [2024-11-16 06:52:10,908 INFO L87 Difference]: Start difference. First operand 266 states and 300 transitions. Second operand has 30 states, 30 states have (on average 7.6) internal successors, (228), 30 states have internal predecessors, (228), 24 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (33), 24 states have call predecessors, (33), 24 states have call successors, (33) [2024-11-16 06:52:13,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:52:13,429 INFO L93 Difference]: Finished difference Result 982 states and 1132 transitions. [2024-11-16 06:52:13,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2024-11-16 06:52:13,429 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 7.6) internal successors, (228), 30 states have internal predecessors, (228), 24 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (33), 24 states have call predecessors, (33), 24 states have call successors, (33) Word has length 385 [2024-11-16 06:52:13,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:52:13,432 INFO L225 Difference]: With dead ends: 982 [2024-11-16 06:52:13,433 INFO L226 Difference]: Without dead ends: 778 [2024-11-16 06:52:13,437 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 930 GetRequests, 819 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4341 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2157, Invalid=10499, Unknown=0, NotChecked=0, Total=12656 [2024-11-16 06:52:13,438 INFO L432 NwaCegarLoop]: 275 mSDtfsCounter, 514 mSDsluCounter, 3324 mSDsCounter, 0 mSdLazyCounter, 1794 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 518 SdHoareTripleChecker+Valid, 3599 SdHoareTripleChecker+Invalid, 1882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1794 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-16 06:52:13,438 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [518 Valid, 3599 Invalid, 1882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1794 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-16 06:52:13,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 778 states. [2024-11-16 06:52:13,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 778 to 718. [2024-11-16 06:52:13,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 718 states, 624 states have (on average 1.017628205128205) internal successors, (635), 624 states have internal predecessors, (635), 91 states have call successors, (91), 3 states have call predecessors, (91), 2 states have return successors, (90), 90 states have call predecessors, (90), 90 states have call successors, (90) [2024-11-16 06:52:13,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 718 states to 718 states and 816 transitions. [2024-11-16 06:52:13,488 INFO L78 Accepts]: Start accepts. Automaton has 718 states and 816 transitions. Word has length 385 [2024-11-16 06:52:13,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:52:13,488 INFO L471 AbstractCegarLoop]: Abstraction has 718 states and 816 transitions. [2024-11-16 06:52:13,489 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 7.6) internal successors, (228), 30 states have internal predecessors, (228), 24 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (33), 24 states have call predecessors, (33), 24 states have call successors, (33) [2024-11-16 06:52:13,489 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 816 transitions. [2024-11-16 06:52:13,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1070 [2024-11-16 06:52:13,511 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:52:13,511 INFO L215 NwaCegarLoop]: trace histogram [91, 90, 90, 90, 80, 80, 80, 80, 80, 80, 80, 80, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:52:13,525 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-16 06:52:13,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-16 06:52:13,714 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:52:13,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:52:13,715 INFO L85 PathProgramCache]: Analyzing trace with hash 696689039, now seen corresponding path program 3 times [2024-11-16 06:52:13,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:52:13,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034756017] [2024-11-16 06:52:13,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:52:13,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:52:14,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:14,957 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-16 06:52:14,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:14,959 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-16 06:52:14,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:14,962 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-16 06:52:14,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:14,963 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-11-16 06:52:14,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:14,965 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-11-16 06:52:14,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:14,966 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-11-16 06:52:14,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:14,968 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-11-16 06:52:14,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:14,969 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-11-16 06:52:14,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:14,971 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-11-16 06:52:14,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:14,972 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-11-16 06:52:14,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:14,973 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-11-16 06:52:14,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:14,974 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-11-16 06:52:14,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:14,976 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-11-16 06:52:14,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:14,978 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-11-16 06:52:14,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:14,979 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2024-11-16 06:52:14,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:14,981 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2024-11-16 06:52:14,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:14,982 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2024-11-16 06:52:14,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:14,983 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2024-11-16 06:52:14,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:14,984 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2024-11-16 06:52:14,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:14,985 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2024-11-16 06:52:14,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:14,987 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2024-11-16 06:52:14,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:14,988 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2024-11-16 06:52:14,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:14,989 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2024-11-16 06:52:14,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:14,990 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2024-11-16 06:52:14,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:14,991 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2024-11-16 06:52:14,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:14,992 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2024-11-16 06:52:14,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:14,993 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2024-11-16 06:52:14,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:14,995 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2024-11-16 06:52:14,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:14,996 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2024-11-16 06:52:14,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:14,997 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2024-11-16 06:52:14,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:14,998 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2024-11-16 06:52:14,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:14,999 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2024-11-16 06:52:14,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:15,000 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2024-11-16 06:52:15,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:15,001 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2024-11-16 06:52:15,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:15,002 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2024-11-16 06:52:15,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:15,004 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2024-11-16 06:52:15,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:15,005 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2024-11-16 06:52:15,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:15,006 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2024-11-16 06:52:15,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:15,007 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2024-11-16 06:52:15,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:15,008 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2024-11-16 06:52:15,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:15,010 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 482 [2024-11-16 06:52:15,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:15,011 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 494 [2024-11-16 06:52:15,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:15,012 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 506 [2024-11-16 06:52:15,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:15,013 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 518 [2024-11-16 06:52:15,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:15,014 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 526 [2024-11-16 06:52:15,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:15,015 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2024-11-16 06:52:15,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:15,017 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 552 [2024-11-16 06:52:15,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:15,018 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 564 [2024-11-16 06:52:15,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:15,019 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 576 [2024-11-16 06:52:15,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:15,020 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 588 [2024-11-16 06:52:15,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:15,022 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 600 [2024-11-16 06:52:15,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:15,023 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 612 [2024-11-16 06:52:15,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:15,026 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 624 [2024-11-16 06:52:15,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:15,027 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 632 [2024-11-16 06:52:15,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:15,028 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2024-11-16 06:52:15,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:15,029 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 658 [2024-11-16 06:52:15,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:15,030 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 670 [2024-11-16 06:52:15,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:15,031 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 682 [2024-11-16 06:52:15,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:15,032 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 694 [2024-11-16 06:52:15,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:15,033 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 706 [2024-11-16 06:52:15,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:15,034 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 718 [2024-11-16 06:52:15,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:15,035 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 730 [2024-11-16 06:52:15,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:15,036 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 738 [2024-11-16 06:52:15,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:15,037 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 752 [2024-11-16 06:52:15,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:15,038 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 764 [2024-11-16 06:52:15,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:15,042 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 776 [2024-11-16 06:52:15,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:15,043 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 788 [2024-11-16 06:52:15,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:15,045 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 800 [2024-11-16 06:52:15,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:15,046 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 812 [2024-11-16 06:52:15,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:15,047 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 824 [2024-11-16 06:52:15,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:15,049 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 836 [2024-11-16 06:52:15,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:15,050 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 844 [2024-11-16 06:52:15,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:15,051 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 858 [2024-11-16 06:52:15,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:15,053 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 870 [2024-11-16 06:52:15,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:15,054 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 882 [2024-11-16 06:52:15,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:15,055 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 894 [2024-11-16 06:52:15,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:15,056 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 906 [2024-11-16 06:52:15,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:15,057 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 918 [2024-11-16 06:52:15,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:15,059 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 930 [2024-11-16 06:52:15,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:15,059 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 942 [2024-11-16 06:52:15,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:15,061 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 950 [2024-11-16 06:52:15,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:15,062 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 964 [2024-11-16 06:52:15,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:15,065 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 976 [2024-11-16 06:52:15,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:15,068 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 988 [2024-11-16 06:52:15,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:15,069 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1000 [2024-11-16 06:52:15,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:15,070 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1012 [2024-11-16 06:52:15,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:15,071 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1024 [2024-11-16 06:52:15,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:15,072 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1036 [2024-11-16 06:52:15,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:15,073 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1048 [2024-11-16 06:52:15,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:15,074 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1056 [2024-11-16 06:52:15,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:15,085 INFO L134 CoverageAnalysis]: Checked inductivity of 43370 backedges. 5114 proven. 240 refuted. 0 times theorem prover too weak. 38016 trivial. 0 not checked. [2024-11-16 06:52:15,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:52:15,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034756017] [2024-11-16 06:52:15,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034756017] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:52:15,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1812340533] [2024-11-16 06:52:15,086 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 06:52:15,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:52:15,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:52:15,088 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:52:15,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-16 06:52:15,182 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-16 06:52:15,182 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:52:15,183 INFO L255 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-16 06:52:15,207 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:52:15,471 INFO L134 CoverageAnalysis]: Checked inductivity of 43370 backedges. 5132 proven. 0 refuted. 0 times theorem prover too weak. 38238 trivial. 0 not checked. [2024-11-16 06:52:15,471 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 06:52:15,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1812340533] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:52:15,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 06:52:15,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2024-11-16 06:52:15,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504163501] [2024-11-16 06:52:15,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:52:15,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 06:52:15,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:52:15,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 06:52:15,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2024-11-16 06:52:15,474 INFO L87 Difference]: Start difference. First operand 718 states and 816 transitions. Second operand has 7 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-16 06:52:15,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:52:15,591 INFO L93 Difference]: Finished difference Result 718 states and 816 transitions. [2024-11-16 06:52:15,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 06:52:15,591 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 1069 [2024-11-16 06:52:15,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:52:15,594 INFO L225 Difference]: With dead ends: 718 [2024-11-16 06:52:15,594 INFO L226 Difference]: Without dead ends: 0 [2024-11-16 06:52:15,596 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1262 GetRequests, 1246 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2024-11-16 06:52:15,596 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 11 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 06:52:15,596 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 125 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:52:15,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-16 06:52:15,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-16 06:52:15,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:15,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-16 06:52:15,598 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1069 [2024-11-16 06:52:15,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:52:15,598 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-16 06:52:15,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-16 06:52:15,598 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-16 06:52:15,598 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-16 06:52:15,601 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-16 06:52:15,613 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-16 06:52:15,805 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:52:15,808 INFO L407 BasicCegarLoop]: Path program histogram: [3, 3, 1, 1, 1, 1, 1] [2024-11-16 06:52:15,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-16 06:52:18,594 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-16 06:52:18,607 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 06:52:18 BoogieIcfgContainer [2024-11-16 06:52:18,608 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-16 06:52:18,608 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-16 06:52:18,608 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-16 06:52:18,608 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-16 06:52:18,608 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 06:52:04" (3/4) ... [2024-11-16 06:52:18,610 INFO L143 WitnessPrinter]: Generating witness for correct program [2024-11-16 06:52:18,613 INFO L393 IcfgBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-11-16 06:52:18,615 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2024-11-16 06:52:18,615 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-16 06:52:18,615 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-16 06:52:18,615 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-16 06:52:18,681 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-16 06:52:18,681 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-16 06:52:18,681 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-16 06:52:18,682 INFO L158 Benchmark]: Toolchain (without parser) took 14473.08ms. Allocated memory was 163.6MB in the beginning and 390.1MB in the end (delta: 226.5MB). Free memory was 92.5MB in the beginning and 200.3MB in the end (delta: -107.8MB). Peak memory consumption was 120.5MB. Max. memory is 16.1GB. [2024-11-16 06:52:18,682 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 163.6MB. Free memory is still 119.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-16 06:52:18,682 INFO L158 Benchmark]: CACSL2BoogieTranslator took 191.45ms. Allocated memory is still 163.6MB. Free memory was 92.2MB in the beginning and 79.6MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-16 06:52:18,682 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.34ms. Allocated memory is still 163.6MB. Free memory was 79.6MB in the beginning and 78.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-16 06:52:18,683 INFO L158 Benchmark]: Boogie Preprocessor took 22.05ms. Allocated memory is still 163.6MB. Free memory was 78.1MB in the beginning and 76.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-16 06:52:18,683 INFO L158 Benchmark]: IcfgBuilder took 229.52ms. Allocated memory is still 163.6MB. Free memory was 76.5MB in the beginning and 65.0MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-16 06:52:18,683 INFO L158 Benchmark]: TraceAbstraction took 13927.49ms. Allocated memory was 163.6MB in the beginning and 390.1MB in the end (delta: 226.5MB). Free memory was 64.2MB in the beginning and 204.5MB in the end (delta: -140.2MB). Peak memory consumption was 173.7MB. Max. memory is 16.1GB. [2024-11-16 06:52:18,684 INFO L158 Benchmark]: Witness Printer took 73.47ms. Allocated memory is still 390.1MB. Free memory was 204.5MB in the beginning and 200.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-16 06:52:18,684 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 163.6MB. Free memory is still 119.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 191.45ms. Allocated memory is still 163.6MB. Free memory was 92.2MB in the beginning and 79.6MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.34ms. Allocated memory is still 163.6MB. Free memory was 79.6MB in the beginning and 78.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.05ms. Allocated memory is still 163.6MB. Free memory was 78.1MB in the beginning and 76.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 229.52ms. Allocated memory is still 163.6MB. Free memory was 76.5MB in the beginning and 65.0MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 13927.49ms. Allocated memory was 163.6MB in the beginning and 390.1MB in the end (delta: 226.5MB). Free memory was 64.2MB in the beginning and 204.5MB in the end (delta: -140.2MB). Peak memory consumption was 173.7MB. Max. memory is 16.1GB. * Witness Printer took 73.47ms. Allocated memory is still 390.1MB. Free memory was 204.5MB in the beginning and 200.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 11.0s, OverallIterations: 11, TraceHistogramMax: 91, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 3.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 894 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 876 mSDsluCounter, 5401 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4755 mSDsCounter, 149 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2450 IncrementalHoareTripleChecker+Invalid, 2599 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 149 mSolverCounterUnsat, 646 mSDtfsCounter, 2450 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2687 GetRequests, 2474 SyntacticMatches, 0 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4891 ImplicationChecksByTransitivity, 2.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=718occurred in iteration=10, InterpolantAutomatonStates: 181, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 125 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 4.7s InterpolantComputationTime, 3427 NumberOfCodeBlocks, 2317 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 3940 ConstructedInterpolants, 4 QuantifiedInterpolants, 8231 SizeOfPredicates, 5 NumberOfNonLiveVariables, 1158 ConjunctsInSsa, 69 ConjunctsInUnsatCore, 21 InterpolantComputations, 7 PerfectInterpolantSequences, 97808/103936 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 29]: Location Invariant Derived location invariant: null - InvariantResult [Line: 32]: Location Invariant Derived location invariant: null - ProcedureContractResult [Line: 15]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (((cond < 0) || (2 < cond)) || (cond == 1)) Ensures: (((cond < 0) || (2 < cond)) || (cond == 1)) RESULT: Ultimate proved your program to be correct! [2024-11-16 06:52:18,707 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE