./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound1.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 9439004819e2e34c2ab2e87057bca89732394fc53eb02ecb90192bb8fac7667a --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 02:18:46,290 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 02:18:46,354 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-14 02:18:46,359 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 02:18:46,362 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 02:18:46,390 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 02:18:46,391 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 02:18:46,391 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 02:18:46,392 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 02:18:46,393 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 02:18:46,393 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 02:18:46,394 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 02:18:46,394 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 02:18:46,395 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 02:18:46,395 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 02:18:46,397 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 02:18:46,397 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 02:18:46,397 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 02:18:46,398 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 02:18:46,398 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 02:18:46,401 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 02:18:46,402 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 02:18:46,402 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 02:18:46,402 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 02:18:46,403 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 02:18:46,403 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 02:18:46,403 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 02:18:46,403 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 02:18:46,404 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 02:18:46,404 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 02:18:46,404 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 02:18:46,404 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 02:18:46,404 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 02:18:46,405 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 02:18:46,405 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 02:18:46,405 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 02:18:46,405 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 02:18:46,405 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 02:18:46,406 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 02:18:46,406 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 02:18:46,406 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 02:18:46,408 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 02:18:46,408 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9439004819e2e34c2ab2e87057bca89732394fc53eb02ecb90192bb8fac7667a [2024-10-14 02:18:46,658 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 02:18:46,683 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 02:18:46,685 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 02:18:46,686 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 02:18:46,687 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 02:18:46,688 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound1.c [2024-10-14 02:18:48,145 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 02:18:48,332 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 02:18:48,332 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound1.c [2024-10-14 02:18:48,341 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f5dabc4c/14f3925752f0433095056f9aa047147e/FLAG3c61e9770 [2024-10-14 02:18:48,356 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f5dabc4c/14f3925752f0433095056f9aa047147e [2024-10-14 02:18:48,358 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 02:18:48,359 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 02:18:48,360 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 02:18:48,361 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 02:18:48,365 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 02:18:48,366 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:18:48" (1/1) ... [2024-10-14 02:18:48,366 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30e8de99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:18:48, skipping insertion in model container [2024-10-14 02:18:48,367 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:18:48" (1/1) ... [2024-10-14 02:18:48,389 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 02:18:48,579 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound1.c[490,503] [2024-10-14 02:18:48,625 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 02:18:48,633 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 02:18:48,644 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound1.c[490,503] [2024-10-14 02:18:48,655 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 02:18:48,668 INFO L204 MainTranslator]: Completed translation [2024-10-14 02:18:48,668 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:18:48 WrapperNode [2024-10-14 02:18:48,669 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 02:18:48,670 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 02:18:48,670 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 02:18:48,670 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 02:18:48,676 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:18:48" (1/1) ... [2024-10-14 02:18:48,681 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:18:48" (1/1) ... [2024-10-14 02:18:48,696 INFO L138 Inliner]: procedures = 14, calls = 19, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 79 [2024-10-14 02:18:48,696 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 02:18:48,697 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 02:18:48,697 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 02:18:48,697 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 02:18:48,705 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:18:48" (1/1) ... [2024-10-14 02:18:48,706 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:18:48" (1/1) ... [2024-10-14 02:18:48,707 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:18:48" (1/1) ... [2024-10-14 02:18:48,723 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-14 02:18:48,723 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:18:48" (1/1) ... [2024-10-14 02:18:48,723 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:18:48" (1/1) ... [2024-10-14 02:18:48,726 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:18:48" (1/1) ... [2024-10-14 02:18:48,729 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:18:48" (1/1) ... [2024-10-14 02:18:48,734 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:18:48" (1/1) ... [2024-10-14 02:18:48,735 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:18:48" (1/1) ... [2024-10-14 02:18:48,736 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 02:18:48,737 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 02:18:48,737 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 02:18:48,737 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 02:18:48,738 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:18:48" (1/1) ... [2024-10-14 02:18:48,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 02:18:48,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 02:18:48,767 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-14 02:18:48,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-14 02:18:48,809 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 02:18:48,809 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-10-14 02:18:48,809 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-10-14 02:18:48,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 02:18:48,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 02:18:48,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 02:18:48,809 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-14 02:18:48,809 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-14 02:18:48,862 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 02:18:48,864 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 02:18:49,015 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-10-14 02:18:49,015 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 02:18:49,046 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 02:18:49,049 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-14 02:18:49,050 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:18:49 BoogieIcfgContainer [2024-10-14 02:18:49,050 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 02:18:49,052 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 02:18:49,053 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 02:18:49,057 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 02:18:49,057 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 02:18:48" (1/3) ... [2024-10-14 02:18:49,059 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fd5d697 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:18:49, skipping insertion in model container [2024-10-14 02:18:49,059 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:18:48" (2/3) ... [2024-10-14 02:18:49,059 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fd5d697 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:18:49, skipping insertion in model container [2024-10-14 02:18:49,059 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:18:49" (3/3) ... [2024-10-14 02:18:49,061 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd2-ll_valuebound1.c [2024-10-14 02:18:49,078 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 02:18:49,079 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-14 02:18:49,140 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 02:18:49,146 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;@655eda9a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 02:18:49,146 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-14 02:18:49,149 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 16 states have (on average 1.5625) internal successors, (25), 18 states have internal predecessors, (25), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-14 02:18:49,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-10-14 02:18:49,156 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 02:18:49,156 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 02:18:49,157 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 02:18:49,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 02:18:49,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1865535902, now seen corresponding path program 1 times [2024-10-14 02:18:49,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 02:18:49,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622936403] [2024-10-14 02:18:49,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:18:49,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 02:18:49,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:18:49,361 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:18:49,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:18:49,373 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-14 02:18:49,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:18:49,382 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-14 02:18:49,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:18:49,392 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-14 02:18:49,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:18:49,403 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-14 02:18:49,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:18:49,410 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-14 02:18:49,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:18:49,424 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-10-14 02:18:49,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 02:18:49,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622936403] [2024-10-14 02:18:49,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622936403] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 02:18:49,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 02:18:49,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 02:18:49,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422295173] [2024-10-14 02:18:49,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 02:18:49,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-14 02:18:49,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 02:18:49,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-14 02:18:49,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 02:18:49,484 INFO L87 Difference]: Start difference. First operand has 32 states, 16 states have (on average 1.5625) internal successors, (25), 18 states have internal predecessors, (25), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-14 02:18:49,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 02:18:49,519 INFO L93 Difference]: Finished difference Result 62 states and 107 transitions. [2024-10-14 02:18:49,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-14 02:18:49,522 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) Word has length 38 [2024-10-14 02:18:49,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 02:18:49,528 INFO L225 Difference]: With dead ends: 62 [2024-10-14 02:18:49,529 INFO L226 Difference]: Without dead ends: 30 [2024-10-14 02:18:49,532 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 02:18:49,538 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 02:18:49,539 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 41 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 02:18:49,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-10-14 02:18:49,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-10-14 02:18:49,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 15 states have (on average 1.2) internal successors, (18), 17 states have internal predecessors, (18), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-10-14 02:18:49,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 41 transitions. [2024-10-14 02:18:49,581 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 41 transitions. Word has length 38 [2024-10-14 02:18:49,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 02:18:49,581 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 41 transitions. [2024-10-14 02:18:49,582 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-14 02:18:49,582 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 41 transitions. [2024-10-14 02:18:49,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-10-14 02:18:49,584 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 02:18:49,585 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 02:18:49,585 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 02:18:49,585 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 02:18:49,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 02:18:49,587 INFO L85 PathProgramCache]: Analyzing trace with hash -279596905, now seen corresponding path program 1 times [2024-10-14 02:18:49,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 02:18:49,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533794828] [2024-10-14 02:18:49,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:18:49,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 02:18:49,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:18:49,825 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:18:49,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:18:49,833 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-14 02:18:49,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:18:49,846 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-14 02:18:49,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:18:49,868 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-14 02:18:49,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:18:49,915 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-14 02:18:49,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:18:49,922 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-14 02:18:49,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:18:49,928 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-10-14 02:18:49,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 02:18:49,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533794828] [2024-10-14 02:18:49,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533794828] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 02:18:49,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [887655164] [2024-10-14 02:18:49,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:18:49,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:18:49,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 02:18:49,933 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) [2024-10-14 02:18:49,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-14 02:18:50,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:18:50,023 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-14 02:18:50,032 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 02:18:50,340 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-10-14 02:18:50,341 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 02:18:50,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [887655164] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 02:18:50,496 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 02:18:50,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9] total 11 [2024-10-14 02:18:50,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198747780] [2024-10-14 02:18:50,498 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 02:18:50,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-14 02:18:50,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 02:18:50,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-14 02:18:50,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-10-14 02:18:50,502 INFO L87 Difference]: Start difference. First operand 30 states and 41 transitions. Second operand has 11 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 6 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2024-10-14 02:18:50,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 02:18:50,739 INFO L93 Difference]: Finished difference Result 51 states and 68 transitions. [2024-10-14 02:18:50,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-14 02:18:50,739 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 6 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) Word has length 39 [2024-10-14 02:18:50,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 02:18:50,741 INFO L225 Difference]: With dead ends: 51 [2024-10-14 02:18:50,741 INFO L226 Difference]: Without dead ends: 43 [2024-10-14 02:18:50,742 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2024-10-14 02:18:50,743 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 33 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 02:18:50,743 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 207 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 02:18:50,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-10-14 02:18:50,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2024-10-14 02:18:50,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 23 states have internal predecessors, (26), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-10-14 02:18:50,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 57 transitions. [2024-10-14 02:18:50,764 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 57 transitions. Word has length 39 [2024-10-14 02:18:50,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 02:18:50,764 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 57 transitions. [2024-10-14 02:18:50,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 6 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2024-10-14 02:18:50,765 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 57 transitions. [2024-10-14 02:18:50,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-10-14 02:18:50,770 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 02:18:50,770 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 02:18:50,789 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-14 02:18:50,971 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:18:50,972 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 02:18:50,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 02:18:50,973 INFO L85 PathProgramCache]: Analyzing trace with hash -76887146, now seen corresponding path program 1 times [2024-10-14 02:18:50,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 02:18:50,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642467577] [2024-10-14 02:18:50,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:18:50,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 02:18:50,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 02:18:50,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [417951061] [2024-10-14 02:18:51,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:18:51,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:18:51,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 02:18:51,004 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) [2024-10-14 02:18:51,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-14 02:18:51,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:18:51,057 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-14 02:18:51,059 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 02:18:51,096 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-10-14 02:18:51,096 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 02:18:51,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 02:18:51,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642467577] [2024-10-14 02:18:51,100 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-14 02:18:51,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417951061] [2024-10-14 02:18:51,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [417951061] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 02:18:51,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 02:18:51,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 02:18:51,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724946320] [2024-10-14 02:18:51,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 02:18:51,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 02:18:51,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 02:18:51,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 02:18:51,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 02:18:51,103 INFO L87 Difference]: Start difference. First operand 42 states and 57 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-10-14 02:18:51,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 02:18:51,153 INFO L93 Difference]: Finished difference Result 61 states and 85 transitions. [2024-10-14 02:18:51,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 02:18:51,154 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 40 [2024-10-14 02:18:51,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 02:18:51,155 INFO L225 Difference]: With dead ends: 61 [2024-10-14 02:18:51,157 INFO L226 Difference]: Without dead ends: 59 [2024-10-14 02:18:51,158 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-14 02:18:51,159 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 4 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 02:18:51,160 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 129 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 02:18:51,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-10-14 02:18:51,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 50. [2024-10-14 02:18:51,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 30 states have internal predecessors, (31), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 15 states have call predecessors, (17), 17 states have call successors, (17) [2024-10-14 02:18:51,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 66 transitions. [2024-10-14 02:18:51,179 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 66 transitions. Word has length 40 [2024-10-14 02:18:51,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 02:18:51,181 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 66 transitions. [2024-10-14 02:18:51,182 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-10-14 02:18:51,182 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 66 transitions. [2024-10-14 02:18:51,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-10-14 02:18:51,182 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 02:18:51,183 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 02:18:51,199 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-14 02:18:51,383 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,SelfDestructingSolverStorable2 [2024-10-14 02:18:51,384 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 02:18:51,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 02:18:51,385 INFO L85 PathProgramCache]: Analyzing trace with hash 345761675, now seen corresponding path program 1 times [2024-10-14 02:18:51,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 02:18:51,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420587049] [2024-10-14 02:18:51,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:18:51,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 02:18:51,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 02:18:51,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [523725129] [2024-10-14 02:18:51,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:18:51,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:18:51,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 02:18:51,414 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) [2024-10-14 02:18:51,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-14 02:18:51,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:18:51,470 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-14 02:18:51,472 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 02:18:51,580 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-10-14 02:18:51,584 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 02:18:51,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 02:18:51,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420587049] [2024-10-14 02:18:51,584 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-14 02:18:51,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [523725129] [2024-10-14 02:18:51,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [523725129] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 02:18:51,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 02:18:51,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 02:18:51,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715506681] [2024-10-14 02:18:51,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 02:18:51,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 02:18:51,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 02:18:51,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 02:18:51,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 02:18:51,586 INFO L87 Difference]: Start difference. First operand 50 states and 66 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-14 02:18:51,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 02:18:51,674 INFO L93 Difference]: Finished difference Result 57 states and 72 transitions. [2024-10-14 02:18:51,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 02:18:51,675 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 45 [2024-10-14 02:18:51,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 02:18:51,677 INFO L225 Difference]: With dead ends: 57 [2024-10-14 02:18:51,678 INFO L226 Difference]: Without dead ends: 55 [2024-10-14 02:18:51,678 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-14 02:18:51,680 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 5 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 02:18:51,682 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 139 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 02:18:51,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-10-14 02:18:51,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2024-10-14 02:18:51,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 30 states have (on average 1.1333333333333333) internal successors, (34), 33 states have internal predecessors, (34), 18 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (17), 15 states have call predecessors, (17), 17 states have call successors, (17) [2024-10-14 02:18:51,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 69 transitions. [2024-10-14 02:18:51,702 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 69 transitions. Word has length 45 [2024-10-14 02:18:51,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 02:18:51,703 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 69 transitions. [2024-10-14 02:18:51,703 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-14 02:18:51,703 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 69 transitions. [2024-10-14 02:18:51,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-10-14 02:18:51,706 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 02:18:51,706 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 02:18:51,724 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-14 02:18:51,906 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:18:51,907 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 02:18:51,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 02:18:51,908 INFO L85 PathProgramCache]: Analyzing trace with hash -2047387093, now seen corresponding path program 1 times [2024-10-14 02:18:51,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 02:18:51,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441649256] [2024-10-14 02:18:51,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:18:51,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 02:18:51,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 02:18:51,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [860505952] [2024-10-14 02:18:51,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:18:51,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:18:51,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 02:18:51,930 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) [2024-10-14 02:18:51,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-14 02:18:51,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:18:51,990 INFO L255 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-10-14 02:18:51,993 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 02:18:52,283 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 17 proven. 19 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-10-14 02:18:52,283 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 02:18:52,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 02:18:52,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441649256] [2024-10-14 02:18:52,691 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-14 02:18:52,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [860505952] [2024-10-14 02:18:52,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [860505952] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 02:18:52,691 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-10-14 02:18:52,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2024-10-14 02:18:52,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023504621] [2024-10-14 02:18:52,692 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-10-14 02:18:52,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-14 02:18:52,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 02:18:52,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-14 02:18:52,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-10-14 02:18:52,694 INFO L87 Difference]: Start difference. First operand 54 states and 69 transitions. Second operand has 12 states, 10 states have (on average 2.1) internal successors, (21), 8 states have internal predecessors, (21), 4 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2024-10-14 02:18:52,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 02:18:52,873 INFO L93 Difference]: Finished difference Result 63 states and 77 transitions. [2024-10-14 02:18:52,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-14 02:18:52,874 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.1) internal successors, (21), 8 states have internal predecessors, (21), 4 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) Word has length 55 [2024-10-14 02:18:52,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 02:18:52,876 INFO L225 Difference]: With dead ends: 63 [2024-10-14 02:18:52,878 INFO L226 Difference]: Without dead ends: 61 [2024-10-14 02:18:52,878 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2024-10-14 02:18:52,879 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 27 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 02:18:52,880 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 137 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 02:18:52,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-10-14 02:18:52,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 58. [2024-10-14 02:18:52,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 33 states have (on average 1.121212121212121) internal successors, (37), 36 states have internal predecessors, (37), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (17), 15 states have call predecessors, (17), 17 states have call successors, (17) [2024-10-14 02:18:52,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 72 transitions. [2024-10-14 02:18:52,894 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 72 transitions. Word has length 55 [2024-10-14 02:18:52,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 02:18:52,895 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 72 transitions. [2024-10-14 02:18:52,895 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.1) internal successors, (21), 8 states have internal predecessors, (21), 4 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2024-10-14 02:18:52,895 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 72 transitions. [2024-10-14 02:18:52,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-10-14 02:18:52,896 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 02:18:52,896 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 02:18:52,915 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-14 02:18:53,098 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:18:53,099 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 02:18:53,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 02:18:53,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1705825109, now seen corresponding path program 1 times [2024-10-14 02:18:53,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 02:18:53,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030347370] [2024-10-14 02:18:53,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:18:53,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 02:18:53,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 02:18:53,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [957910962] [2024-10-14 02:18:53,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:18:53,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:18:53,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 02:18:53,128 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) [2024-10-14 02:18:53,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-14 02:18:53,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:18:53,184 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-10-14 02:18:53,190 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 02:18:53,348 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 17 proven. 17 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-10-14 02:18:53,348 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 02:18:53,453 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2024-10-14 02:18:53,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 02:18:53,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030347370] [2024-10-14 02:18:53,453 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-14 02:18:53,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957910962] [2024-10-14 02:18:53,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [957910962] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-14 02:18:53,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 02:18:53,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 12 [2024-10-14 02:18:53,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795742760] [2024-10-14 02:18:53,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 02:18:53,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 02:18:53,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 02:18:53,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 02:18:53,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-10-14 02:18:53,456 INFO L87 Difference]: Start difference. First operand 58 states and 72 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-10-14 02:18:53,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 02:18:53,509 INFO L93 Difference]: Finished difference Result 64 states and 77 transitions. [2024-10-14 02:18:53,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 02:18:53,510 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 62 [2024-10-14 02:18:53,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 02:18:53,511 INFO L225 Difference]: With dead ends: 64 [2024-10-14 02:18:53,511 INFO L226 Difference]: Without dead ends: 62 [2024-10-14 02:18:53,511 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 110 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-10-14 02:18:53,512 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 4 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 02:18:53,512 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 123 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 02:18:53,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-10-14 02:18:53,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 54. [2024-10-14 02:18:53,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 31 states have (on average 1.1290322580645162) internal successors, (35), 32 states have internal predecessors, (35), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-10-14 02:18:53,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 66 transitions. [2024-10-14 02:18:53,539 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 66 transitions. Word has length 62 [2024-10-14 02:18:53,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 02:18:53,540 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 66 transitions. [2024-10-14 02:18:53,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-10-14 02:18:53,540 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 66 transitions. [2024-10-14 02:18:53,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-10-14 02:18:53,541 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 02:18:53,541 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 02:18:53,558 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-14 02:18:53,745 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:18:53,746 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 02:18:53,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 02:18:53,747 INFO L85 PathProgramCache]: Analyzing trace with hash 392643903, now seen corresponding path program 1 times [2024-10-14 02:18:53,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 02:18:53,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815698416] [2024-10-14 02:18:53,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:18:53,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 02:18:53,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:18:53,896 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:18:53,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:18:53,898 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-14 02:18:53,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:18:53,903 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-14 02:18:53,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:18:53,929 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-14 02:18:53,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:18:53,936 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-14 02:18:53,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:18:53,942 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-14 02:18:53,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:18:53,946 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-14 02:18:53,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:18:53,952 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-14 02:18:53,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:18:53,958 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-14 02:18:53,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:18:53,965 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-14 02:18:53,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:18:53,971 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-10-14 02:18:53,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 02:18:53,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815698416] [2024-10-14 02:18:53,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815698416] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 02:18:53,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1920966822] [2024-10-14 02:18:53,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:18:53,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:18:53,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 02:18:53,974 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) [2024-10-14 02:18:53,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-14 02:18:54,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:18:54,033 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-10-14 02:18:54,036 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 02:18:54,487 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 8 proven. 26 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-10-14 02:18:54,487 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 02:18:54,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1920966822] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 02:18:54,709 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 02:18:54,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13] total 17 [2024-10-14 02:18:54,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582786107] [2024-10-14 02:18:54,709 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 02:18:54,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-14 02:18:54,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 02:18:54,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-14 02:18:54,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2024-10-14 02:18:54,711 INFO L87 Difference]: Start difference. First operand 54 states and 66 transitions. Second operand has 17 states, 16 states have (on average 2.0625) internal successors, (33), 14 states have internal predecessors, (33), 10 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (20), 8 states have call predecessors, (20), 8 states have call successors, (20) [2024-10-14 02:18:55,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 02:18:55,055 INFO L93 Difference]: Finished difference Result 86 states and 107 transitions. [2024-10-14 02:18:55,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-14 02:18:55,055 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.0625) internal successors, (33), 14 states have internal predecessors, (33), 10 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (20), 8 states have call predecessors, (20), 8 states have call successors, (20) Word has length 64 [2024-10-14 02:18:55,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 02:18:55,056 INFO L225 Difference]: With dead ends: 86 [2024-10-14 02:18:55,056 INFO L226 Difference]: Without dead ends: 65 [2024-10-14 02:18:55,057 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=104, Invalid=598, Unknown=0, NotChecked=0, Total=702 [2024-10-14 02:18:55,058 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 47 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 02:18:55,058 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 311 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 02:18:55,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-10-14 02:18:55,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 64. [2024-10-14 02:18:55,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 36 states have (on average 1.1111111111111112) internal successors, (40), 37 states have internal predecessors, (40), 20 states have call successors, (20), 7 states have call predecessors, (20), 7 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-10-14 02:18:55,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 79 transitions. [2024-10-14 02:18:55,070 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 79 transitions. Word has length 64 [2024-10-14 02:18:55,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 02:18:55,071 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 79 transitions. [2024-10-14 02:18:55,071 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.0625) internal successors, (33), 14 states have internal predecessors, (33), 10 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (20), 8 states have call predecessors, (20), 8 states have call successors, (20) [2024-10-14 02:18:55,071 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 79 transitions. [2024-10-14 02:18:55,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-10-14 02:18:55,072 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 02:18:55,073 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 8, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 02:18:55,089 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-14 02:18:55,276 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:18:55,277 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 02:18:55,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 02:18:55,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1305329662, now seen corresponding path program 1 times [2024-10-14 02:18:55,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 02:18:55,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439390829] [2024-10-14 02:18:55,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:18:55,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 02:18:55,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 02:18:55,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2127398366] [2024-10-14 02:18:55,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:18:55,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:18:55,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 02:18:55,302 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 02:18:55,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-14 02:18:55,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:18:55,368 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-10-14 02:18:55,371 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 02:18:56,082 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 22 proven. 26 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-10-14 02:18:56,082 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 02:18:57,203 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 19 proven. 20 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2024-10-14 02:18:57,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 02:18:57,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439390829] [2024-10-14 02:18:57,204 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-14 02:18:57,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127398366] [2024-10-14 02:18:57,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2127398366] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 02:18:57,204 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 02:18:57,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 25 [2024-10-14 02:18:57,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064665850] [2024-10-14 02:18:57,204 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 02:18:57,205 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-10-14 02:18:57,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 02:18:57,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-10-14 02:18:57,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2024-10-14 02:18:57,206 INFO L87 Difference]: Start difference. First operand 64 states and 79 transitions. Second operand has 25 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 19 states have internal predecessors, (38), 13 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (27), 11 states have call predecessors, (27), 11 states have call successors, (27) [2024-10-14 02:18:59,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 02:18:59,218 INFO L93 Difference]: Finished difference Result 146 states and 214 transitions. [2024-10-14 02:18:59,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-10-14 02:18:59,218 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 19 states have internal predecessors, (38), 13 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (27), 11 states have call predecessors, (27), 11 states have call successors, (27) Word has length 86 [2024-10-14 02:18:59,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 02:18:59,221 INFO L225 Difference]: With dead ends: 146 [2024-10-14 02:18:59,221 INFO L226 Difference]: Without dead ends: 144 [2024-10-14 02:18:59,222 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 364 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=426, Invalid=1644, Unknown=0, NotChecked=0, Total=2070 [2024-10-14 02:18:59,222 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 122 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-14 02:18:59,223 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 474 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-14 02:18:59,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-10-14 02:18:59,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 96. [2024-10-14 02:18:59,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 50 states have (on average 1.18) internal successors, (59), 52 states have internal predecessors, (59), 37 states have call successors, (37), 8 states have call predecessors, (37), 8 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2024-10-14 02:18:59,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 132 transitions. [2024-10-14 02:18:59,260 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 132 transitions. Word has length 86 [2024-10-14 02:18:59,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 02:18:59,261 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 132 transitions. [2024-10-14 02:18:59,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 19 states have internal predecessors, (38), 13 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (27), 11 states have call predecessors, (27), 11 states have call successors, (27) [2024-10-14 02:18:59,261 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 132 transitions. [2024-10-14 02:18:59,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-10-14 02:18:59,263 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 02:18:59,263 INFO L215 NwaCegarLoop]: trace histogram [10, 9, 9, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 02:18:59,276 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-14 02:18:59,463 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:18:59,464 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 02:18:59,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 02:18:59,464 INFO L85 PathProgramCache]: Analyzing trace with hash -2239709, now seen corresponding path program 1 times [2024-10-14 02:18:59,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 02:18:59,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320128216] [2024-10-14 02:18:59,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:18:59,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 02:18:59,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 02:18:59,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [289543174] [2024-10-14 02:18:59,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:18:59,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:18:59,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 02:18:59,499 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 02:18:59,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-14 02:18:59,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:18:59,566 INFO L255 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-10-14 02:18:59,569 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 02:19:00,052 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 24 proven. 26 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-10-14 02:19:00,054 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 02:19:00,417 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 18 proven. 8 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2024-10-14 02:19:00,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 02:19:00,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320128216] [2024-10-14 02:19:00,420 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-14 02:19:00,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289543174] [2024-10-14 02:19:00,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [289543174] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 02:19:00,420 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 02:19:00,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10] total 22 [2024-10-14 02:19:00,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359875409] [2024-10-14 02:19:00,423 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 02:19:00,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-10-14 02:19:00,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 02:19:00,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-10-14 02:19:00,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2024-10-14 02:19:00,425 INFO L87 Difference]: Start difference. First operand 96 states and 132 transitions. Second operand has 22 states, 19 states have (on average 1.894736842105263) internal successors, (36), 18 states have internal predecessors, (36), 11 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (29), 11 states have call predecessors, (29), 11 states have call successors, (29) [2024-10-14 02:19:01,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 02:19:01,551 INFO L93 Difference]: Finished difference Result 181 states and 269 transitions. [2024-10-14 02:19:01,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-14 02:19:01,552 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 1.894736842105263) internal successors, (36), 18 states have internal predecessors, (36), 11 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (29), 11 states have call predecessors, (29), 11 states have call successors, (29) Word has length 91 [2024-10-14 02:19:01,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 02:19:01,554 INFO L225 Difference]: With dead ends: 181 [2024-10-14 02:19:01,555 INFO L226 Difference]: Without dead ends: 175 [2024-10-14 02:19:01,557 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=269, Invalid=991, Unknown=0, NotChecked=0, Total=1260 [2024-10-14 02:19:01,558 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 96 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-14 02:19:01,559 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 415 Invalid, 494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-14 02:19:01,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2024-10-14 02:19:01,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 146. [2024-10-14 02:19:01,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 78 states have (on average 1.205128205128205) internal successors, (94), 81 states have internal predecessors, (94), 58 states have call successors, (58), 9 states have call predecessors, (58), 9 states have return successors, (56), 55 states have call predecessors, (56), 56 states have call successors, (56) [2024-10-14 02:19:01,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 208 transitions. [2024-10-14 02:19:01,630 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 208 transitions. Word has length 91 [2024-10-14 02:19:01,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 02:19:01,631 INFO L471 AbstractCegarLoop]: Abstraction has 146 states and 208 transitions. [2024-10-14 02:19:01,631 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 1.894736842105263) internal successors, (36), 18 states have internal predecessors, (36), 11 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (29), 11 states have call predecessors, (29), 11 states have call successors, (29) [2024-10-14 02:19:01,631 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 208 transitions. [2024-10-14 02:19:01,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-10-14 02:19:01,632 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 02:19:01,632 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 6, 6, 6, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 02:19:01,652 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-14 02:19:01,834 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-10-14 02:19:01,835 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 02:19:01,835 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 02:19:01,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1362743633, now seen corresponding path program 1 times [2024-10-14 02:19:01,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 02:19:01,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068226877] [2024-10-14 02:19:01,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:19:01,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 02:19:01,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:19:02,029 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:19:02,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:19:02,032 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-14 02:19:02,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:19:02,053 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-14 02:19:02,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:19:02,056 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-14 02:19:02,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:19:02,059 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-14 02:19:02,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:19:02,061 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-14 02:19:02,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:19:02,064 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-14 02:19:02,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:19:02,067 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-14 02:19:02,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:19:02,070 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-14 02:19:02,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:19:02,075 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-14 02:19:02,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:19:02,079 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-14 02:19:02,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:19:02,083 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-14 02:19:02,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:19:02,091 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-14 02:19:02,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:19:02,099 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-10-14 02:19:02,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:19:02,104 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-10-14 02:19:02,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:19:02,110 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-10-14 02:19:02,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:19:02,116 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 39 proven. 12 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-10-14 02:19:02,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 02:19:02,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068226877] [2024-10-14 02:19:02,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068226877] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 02:19:02,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903547545] [2024-10-14 02:19:02,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:19:02,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:19:02,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 02:19:02,119 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 02:19:02,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-14 02:19:02,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:19:02,188 INFO L255 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-14 02:19:02,190 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 02:19:02,248 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 99 proven. 12 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2024-10-14 02:19:02,248 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 02:19:02,373 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 33 proven. 18 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-10-14 02:19:02,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [903547545] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 02:19:02,374 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 02:19:02,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2024-10-14 02:19:02,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3373373] [2024-10-14 02:19:02,374 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 02:19:02,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-14 02:19:02,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 02:19:02,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-14 02:19:02,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-10-14 02:19:02,376 INFO L87 Difference]: Start difference. First operand 146 states and 208 transitions. Second operand has 12 states, 12 states have (on average 2.75) internal successors, (33), 10 states have internal predecessors, (33), 7 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (25), 7 states have call predecessors, (25), 7 states have call successors, (25) [2024-10-14 02:19:02,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 02:19:02,501 INFO L93 Difference]: Finished difference Result 157 states and 217 transitions. [2024-10-14 02:19:02,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-14 02:19:02,502 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.75) internal successors, (33), 10 states have internal predecessors, (33), 7 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (25), 7 states have call predecessors, (25), 7 states have call successors, (25) Word has length 97 [2024-10-14 02:19:02,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 02:19:02,503 INFO L225 Difference]: With dead ends: 157 [2024-10-14 02:19:02,503 INFO L226 Difference]: Without dead ends: 67 [2024-10-14 02:19:02,504 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 221 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2024-10-14 02:19:02,504 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 17 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 02:19:02,505 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 214 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 02:19:02,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-10-14 02:19:02,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2024-10-14 02:19:02,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 37 states have (on average 1.027027027027027) internal successors, (38), 37 states have internal predecessors, (38), 23 states have call successors, (23), 7 states have call predecessors, (23), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-10-14 02:19:02,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 83 transitions. [2024-10-14 02:19:02,519 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 83 transitions. Word has length 97 [2024-10-14 02:19:02,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 02:19:02,520 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 83 transitions. [2024-10-14 02:19:02,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.75) internal successors, (33), 10 states have internal predecessors, (33), 7 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (25), 7 states have call predecessors, (25), 7 states have call successors, (25) [2024-10-14 02:19:02,520 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 83 transitions. [2024-10-14 02:19:02,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-10-14 02:19:02,522 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 02:19:02,522 INFO L215 NwaCegarLoop]: trace histogram [17, 16, 16, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 02:19:02,539 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-14 02:19:02,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-14 02:19:02,726 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 02:19:02,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 02:19:02,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1043945028, now seen corresponding path program 2 times [2024-10-14 02:19:02,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 02:19:02,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240242857] [2024-10-14 02:19:02,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:19:02,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 02:19:02,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:19:02,941 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:19:02,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:19:02,966 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-14 02:19:02,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:19:02,969 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-14 02:19:02,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:19:02,972 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-14 02:19:02,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:19:02,975 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-14 02:19:02,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:19:02,977 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-14 02:19:02,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:19:02,979 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-14 02:19:02,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:19:02,982 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-14 02:19:02,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:19:02,985 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-14 02:19:02,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:19:02,987 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-14 02:19:02,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:19:02,990 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-14 02:19:02,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:19:02,992 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-14 02:19:02,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:19:02,995 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-14 02:19:02,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:19:02,998 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-10-14 02:19:02,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:19:03,000 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-10-14 02:19:03,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:19:03,003 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-10-14 02:19:03,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:19:03,007 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-10-14 02:19:03,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:19:03,010 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-10-14 02:19:03,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:19:03,013 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-10-14 02:19:03,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:19:03,017 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-10-14 02:19:03,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:19:03,020 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-10-14 02:19:03,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:19:03,023 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-10-14 02:19:03,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:19:03,026 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 34 proven. 51 refuted. 0 times theorem prover too weak. 525 trivial. 0 not checked. [2024-10-14 02:19:03,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 02:19:03,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240242857] [2024-10-14 02:19:03,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240242857] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 02:19:03,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1217587970] [2024-10-14 02:19:03,027 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 02:19:03,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:19:03,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 02:19:03,028 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 02:19:03,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-14 02:19:03,102 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 02:19:03,103 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 02:19:03,104 INFO L255 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-14 02:19:03,106 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 02:19:03,222 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 32 proven. 53 refuted. 0 times theorem prover too weak. 525 trivial. 0 not checked. [2024-10-14 02:19:03,222 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 02:19:03,499 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 38 proven. 47 refuted. 0 times theorem prover too weak. 525 trivial. 0 not checked. [2024-10-14 02:19:03,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1217587970] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 02:19:03,499 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 02:19:03,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 12] total 21 [2024-10-14 02:19:03,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989884514] [2024-10-14 02:19:03,500 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 02:19:03,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-10-14 02:19:03,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 02:19:03,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-10-14 02:19:03,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=355, Unknown=0, NotChecked=0, Total=420 [2024-10-14 02:19:03,502 INFO L87 Difference]: Start difference. First operand 67 states and 83 transitions. Second operand has 21 states, 21 states have (on average 2.380952380952381) internal successors, (50), 21 states have internal predecessors, (50), 16 states have call successors, (51), 2 states have call predecessors, (51), 2 states have return successors, (52), 14 states have call predecessors, (52), 15 states have call successors, (52) [2024-10-14 02:19:03,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 02:19:03,774 INFO L93 Difference]: Finished difference Result 73 states and 94 transitions. [2024-10-14 02:19:03,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-14 02:19:03,774 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.380952380952381) internal successors, (50), 21 states have internal predecessors, (50), 16 states have call successors, (51), 2 states have call predecessors, (51), 2 states have return successors, (52), 14 states have call predecessors, (52), 15 states have call successors, (52) Word has length 130 [2024-10-14 02:19:03,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 02:19:03,775 INFO L225 Difference]: With dead ends: 73 [2024-10-14 02:19:03,775 INFO L226 Difference]: Without dead ends: 0 [2024-10-14 02:19:03,776 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 290 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=136, Invalid=566, Unknown=0, NotChecked=0, Total=702 [2024-10-14 02:19:03,776 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 24 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 02:19:03,776 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 286 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 02:19:03,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-10-14 02:19:03,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-10-14 02:19:03,777 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) [2024-10-14 02:19:03,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-10-14 02:19:03,777 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 130 [2024-10-14 02:19:03,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 02:19:03,777 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-14 02:19:03,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.380952380952381) internal successors, (50), 21 states have internal predecessors, (50), 16 states have call successors, (51), 2 states have call predecessors, (51), 2 states have return successors, (52), 14 states have call predecessors, (52), 15 states have call successors, (52) [2024-10-14 02:19:03,778 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-10-14 02:19:03,778 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-10-14 02:19:03,780 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-14 02:19:03,798 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-10-14 02:19:03,981 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-14 02:19:03,984 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 02:19:03,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-10-14 02:19:04,655 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-14 02:19:04,676 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 02:19:04 BoogieIcfgContainer [2024-10-14 02:19:04,677 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-14 02:19:04,677 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-14 02:19:04,677 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-14 02:19:04,677 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-14 02:19:04,678 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:18:49" (3/4) ... [2024-10-14 02:19:04,681 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-14 02:19:04,684 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2024-10-14 02:19:04,685 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-10-14 02:19:04,688 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2024-10-14 02:19:04,688 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-10-14 02:19:04,688 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-10-14 02:19:04,688 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-10-14 02:19:04,779 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-14 02:19:04,780 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-14 02:19:04,780 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-14 02:19:04,781 INFO L158 Benchmark]: Toolchain (without parser) took 16421.47ms. Allocated memory was 167.8MB in the beginning and 228.6MB in the end (delta: 60.8MB). Free memory was 100.6MB in the beginning and 169.7MB in the end (delta: -69.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-14 02:19:04,781 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 100.7MB. Free memory is still 49.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-14 02:19:04,781 INFO L158 Benchmark]: CACSL2BoogieTranslator took 308.49ms. Allocated memory is still 167.8MB. Free memory was 100.2MB in the beginning and 133.7MB in the end (delta: -33.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-14 02:19:04,781 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.00ms. Allocated memory is still 167.8MB. Free memory was 133.7MB in the beginning and 132.3MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-14 02:19:04,781 INFO L158 Benchmark]: Boogie Preprocessor took 39.17ms. Allocated memory is still 167.8MB. Free memory was 132.3MB in the beginning and 130.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-14 02:19:04,782 INFO L158 Benchmark]: RCFGBuilder took 313.12ms. Allocated memory is still 167.8MB. Free memory was 130.3MB in the beginning and 117.0MB in the end (delta: 13.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-10-14 02:19:04,782 INFO L158 Benchmark]: TraceAbstraction took 15624.40ms. Allocated memory was 167.8MB in the beginning and 228.6MB in the end (delta: 60.8MB). Free memory was 116.3MB in the beginning and 173.9MB in the end (delta: -57.6MB). Peak memory consumption was 116.2MB. Max. memory is 16.1GB. [2024-10-14 02:19:04,782 INFO L158 Benchmark]: Witness Printer took 102.91ms. Allocated memory is still 228.6MB. Free memory was 173.9MB in the beginning and 169.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-14 02:19:04,784 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 100.7MB. Free memory is still 49.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 308.49ms. Allocated memory is still 167.8MB. Free memory was 100.2MB in the beginning and 133.7MB in the end (delta: -33.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.00ms. Allocated memory is still 167.8MB. Free memory was 133.7MB in the beginning and 132.3MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 39.17ms. Allocated memory is still 167.8MB. Free memory was 132.3MB in the beginning and 130.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 313.12ms. Allocated memory is still 167.8MB. Free memory was 130.3MB in the beginning and 117.0MB in the end (delta: 13.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 15624.40ms. Allocated memory was 167.8MB in the beginning and 228.6MB in the end (delta: 60.8MB). Free memory was 116.3MB in the beginning and 173.9MB in the end (delta: -57.6MB). Peak memory consumption was 116.2MB. Max. memory is 16.1GB. * Witness Printer took 102.91ms. Allocated memory is still 228.6MB. Free memory was 173.9MB in the beginning and 169.7MB 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: 13]: 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 3 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 14.9s, OverallIterations: 11, TraceHistogramMax: 17, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 4.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 401 SdHoareTripleChecker+Valid, 2.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 379 mSDsluCounter, 2476 SdHoareTripleChecker+Invalid, 2.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2093 mSDsCounter, 422 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1716 IncrementalHoareTripleChecker+Invalid, 2138 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 422 mSolverCounterUnsat, 383 mSDtfsCounter, 1716 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1396 GetRequests, 1199 SyntacticMatches, 6 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 833 ImplicationChecksByTransitivity, 4.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=146occurred in iteration=9, InterpolantAutomatonStates: 120, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 11 MinimizatonAttempts, 100 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 6.7s InterpolantComputationTime, 1456 NumberOfCodeBlocks, 1456 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 1523 ConstructedInterpolants, 0 QuantifiedInterpolants, 5255 SizeOfPredicates, 25 NumberOfNonLiveVariables, 1767 ConjunctsInSsa, 227 ConjunctsInUnsatCore, 20 InterpolantComputations, 4 PerfectInterpolantSequences, 3902/4266 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: 47]: Loop Invariant Derived loop invariant: ((((((((((((b == 1) && (p == 1)) && (c == 1)) && (yy == 1)) && (a == 1)) && (x == 1)) && (r == 0)) && (q == 0)) && (y == 1)) && (k == 0)) && (s == 1)) || (((((((((((c == 0) && (k == 1)) && (b == 1)) && (p == 1)) && (yy == 1)) && (a == 1)) && (x == 1)) && (r == 0)) && (q == 0)) && (y == 1)) && (s == 1))) - InvariantResult [Line: 41]: Loop Invariant Derived loop invariant: ((((((((((b == 1) && (p == 1)) && (yy == 1)) && (a == 1)) && (x == 1)) && (r == 0)) && (q == 0)) && (y == 1)) && (s == 1)) || (((((((__int128) q + s) == 0) && (b == 0)) && (x == 1)) && (y == 1)) && ((((__int128) r * y) + ((__int128) p * x)) == a))) - ProcedureContractResult [Line: 7]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not. Ensures: (cond != 0) - ProcedureContractResult [Line: 10]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (1 <= cond) Ensures: (1 <= cond) RESULT: Ultimate proved your program to be correct! [2024-10-14 02:19:04,805 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