./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound5.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 5fecc0272e3d3edda13fe6ca0a651d95cf8d16c414f426c1f8f27e509220a775 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 13:40:49,239 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 13:40:49,298 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 13:40:49,304 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 13:40:49,305 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 13:40:49,327 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 13:40:49,328 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 13:40:49,329 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 13:40:49,329 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 13:40:49,330 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 13:40:49,330 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 13:40:49,331 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 13:40:49,331 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 13:40:49,331 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 13:40:49,333 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 13:40:49,333 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 13:40:49,333 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 13:40:49,333 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 13:40:49,334 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 13:40:49,334 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 13:40:49,334 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 13:40:49,337 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 13:40:49,337 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 13:40:49,337 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 13:40:49,337 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 13:40:49,338 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 13:40:49,338 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 13:40:49,338 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 13:40:49,338 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 13:40:49,338 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 13:40:49,339 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 13:40:49,339 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 13:40:49,339 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 13:40:49,339 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 13:40:49,339 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 13:40:49,339 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 13:40:49,339 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 13:40:49,340 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 13:40:49,340 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 13:40:49,340 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 13:40:49,341 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 13:40:49,341 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 13:40:49,342 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5fecc0272e3d3edda13fe6ca0a651d95cf8d16c414f426c1f8f27e509220a775 [2024-11-18 13:40:49,546 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 13:40:49,577 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 13:40:49,579 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 13:40:49,580 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 13:40:49,580 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 13:40:49,581 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound5.c [2024-11-18 13:40:50,937 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 13:40:51,146 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 13:40:51,147 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound5.c [2024-11-18 13:40:51,158 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e8b2b827/e271912daf4a4b95921d6b2dc209df0d/FLAG5796735ff [2024-11-18 13:40:51,524 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e8b2b827/e271912daf4a4b95921d6b2dc209df0d [2024-11-18 13:40:51,527 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 13:40:51,528 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 13:40:51,530 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 13:40:51,530 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 13:40:51,535 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 13:40:51,536 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:40:51" (1/1) ... [2024-11-18 13:40:51,539 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55463c71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:40:51, skipping insertion in model container [2024-11-18 13:40:51,539 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:40:51" (1/1) ... [2024-11-18 13:40:51,559 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 13:40:51,709 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound5.c[546,559] [2024-11-18 13:40:51,723 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 13:40:51,729 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 13:40:51,741 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound5.c[546,559] [2024-11-18 13:40:51,747 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 13:40:51,760 INFO L204 MainTranslator]: Completed translation [2024-11-18 13:40:51,760 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:40:51 WrapperNode [2024-11-18 13:40:51,761 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 13:40:51,761 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 13:40:51,762 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 13:40:51,762 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 13:40:51,767 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:40:51" (1/1) ... [2024-11-18 13:40:51,771 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:40:51" (1/1) ... [2024-11-18 13:40:51,797 INFO L138 Inliner]: procedures = 14, calls = 13, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 43 [2024-11-18 13:40:51,797 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 13:40:51,798 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 13:40:51,798 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 13:40:51,798 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 13:40:51,817 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:40:51" (1/1) ... [2024-11-18 13:40:51,818 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:40:51" (1/1) ... [2024-11-18 13:40:51,819 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:40:51" (1/1) ... [2024-11-18 13:40:51,829 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-18 13:40:51,830 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:40:51" (1/1) ... [2024-11-18 13:40:51,830 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:40:51" (1/1) ... [2024-11-18 13:40:51,832 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:40:51" (1/1) ... [2024-11-18 13:40:51,835 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:40:51" (1/1) ... [2024-11-18 13:40:51,837 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:40:51" (1/1) ... [2024-11-18 13:40:51,838 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:40:51" (1/1) ... [2024-11-18 13:40:51,839 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 13:40:51,841 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 13:40:51,842 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 13:40:51,842 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 13:40:51,842 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:40:51" (1/1) ... [2024-11-18 13:40:51,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 13:40:51,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:40:51,875 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-18 13:40:51,886 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-18 13:40:51,965 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 13:40:51,966 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 13:40:51,966 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 13:40:51,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 13:40:51,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 13:40:51,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 13:40:51,966 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-18 13:40:51,967 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-18 13:40:52,018 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 13:40:52,023 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 13:40:52,151 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2024-11-18 13:40:52,151 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 13:40:52,162 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 13:40:52,163 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 13:40:52,163 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:40:52 BoogieIcfgContainer [2024-11-18 13:40:52,164 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 13:40:52,168 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 13:40:52,168 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 13:40:52,171 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 13:40:52,172 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 01:40:51" (1/3) ... [2024-11-18 13:40:52,172 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f0924dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:40:52, skipping insertion in model container [2024-11-18 13:40:52,173 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:40:51" (2/3) ... [2024-11-18 13:40:52,173 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f0924dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:40:52, skipping insertion in model container [2024-11-18 13:40:52,174 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:40:52" (3/3) ... [2024-11-18 13:40:52,175 INFO L112 eAbstractionObserver]: Analyzing ICFG geo1-ll_valuebound5.c [2024-11-18 13:40:52,198 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 13:40:52,199 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 13:40:52,277 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 13:40:52,283 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;@6b41dd9c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 13:40:52,284 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 13:40:52,287 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 18 states have internal predecessors, (23), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-18 13:40:52,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-18 13:40:52,293 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:40:52,294 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:40:52,296 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:40:52,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:40:52,300 INFO L85 PathProgramCache]: Analyzing trace with hash -439363615, now seen corresponding path program 1 times [2024-11-18 13:40:52,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:40:52,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792494736] [2024-11-18 13:40:52,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:40:52,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:40:52,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:40:52,452 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-18 13:40:52,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:40:52,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792494736] [2024-11-18 13:40:52,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792494736] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:40:52,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [577257110] [2024-11-18 13:40:52,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:40:52,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:40:52,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:40:52,456 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:40:52,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 13:40:52,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:40:52,524 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 13:40:52,528 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:40:52,546 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-18 13:40:52,546 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:40:52,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [577257110] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:40:52,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:40:52,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-18 13:40:52,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608321310] [2024-11-18 13:40:52,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:40:52,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 13:40:52,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:40:52,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 13:40:52,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 13:40:52,576 INFO L87 Difference]: Start difference. First operand has 27 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 18 states have internal predecessors, (23), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-18 13:40:52,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:40:52,592 INFO L93 Difference]: Finished difference Result 51 states and 72 transitions. [2024-11-18 13:40:52,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 13:40:52,595 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 29 [2024-11-18 13:40:52,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:40:52,600 INFO L225 Difference]: With dead ends: 51 [2024-11-18 13:40:52,600 INFO L226 Difference]: Without dead ends: 23 [2024-11-18 13:40:52,603 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 13:40:52,607 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:40:52,607 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:40:52,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-11-18 13:40:52,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-11-18 13:40:52,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 15 states have internal predecessors, (16), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-18 13:40:52,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2024-11-18 13:40:52,635 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 29 [2024-11-18 13:40:52,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:40:52,635 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2024-11-18 13:40:52,635 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-18 13:40:52,635 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2024-11-18 13:40:52,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-18 13:40:52,637 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:40:52,637 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:40:52,652 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 13:40:52,838 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-18 13:40:52,838 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:40:52,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:40:52,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1976149669, now seen corresponding path program 1 times [2024-11-18 13:40:52,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:40:52,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058591320] [2024-11-18 13:40:52,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:40:52,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:40:52,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-18 13:40:52,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [904550592] [2024-11-18 13:40:52,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:40:52,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:40:52,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:40:52,883 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:40:52,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 13:40:52,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:40:52,922 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-18 13:40:52,924 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:40:53,046 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-18 13:40:53,046 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:40:53,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:40:53,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058591320] [2024-11-18 13:40:53,047 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-18 13:40:53,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904550592] [2024-11-18 13:40:53,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [904550592] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:40:53,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 13:40:53,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 13:40:53,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075629866] [2024-11-18 13:40:53,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:40:53,048 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 13:40:53,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:40:53,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 13:40:53,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 13:40:53,049 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-18 13:40:53,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:40:53,109 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2024-11-18 13:40:53,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 13:40:53,109 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 29 [2024-11-18 13:40:53,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:40:53,110 INFO L225 Difference]: With dead ends: 33 [2024-11-18 13:40:53,110 INFO L226 Difference]: Without dead ends: 31 [2024-11-18 13:40:53,111 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 13:40:53,111 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 4 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:40:53,112 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 85 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:40:53,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-18 13:40:53,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2024-11-18 13:40:53,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 20 states have internal predecessors, (20), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-18 13:40:53,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2024-11-18 13:40:53,121 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 29 [2024-11-18 13:40:53,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:40:53,123 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2024-11-18 13:40:53,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-18 13:40:53,124 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2024-11-18 13:40:53,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-18 13:40:53,126 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:40:53,126 INFO L215 NwaCegarLoop]: trace histogram [4, 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] [2024-11-18 13:40:53,139 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 13:40:53,326 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,SelfDestructingSolverStorable1 [2024-11-18 13:40:53,329 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:40:53,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:40:53,330 INFO L85 PathProgramCache]: Analyzing trace with hash -900153941, now seen corresponding path program 1 times [2024-11-18 13:40:53,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:40:53,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117512830] [2024-11-18 13:40:53,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:40:53,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:40:53,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:40:53,604 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-18 13:40:53,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:40:53,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117512830] [2024-11-18 13:40:53,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117512830] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:40:53,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873442919] [2024-11-18 13:40:53,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:40:53,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:40:53,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:40:53,609 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:40:53,610 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 13:40:53,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:40:53,658 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-18 13:40:53,659 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:40:53,725 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-18 13:40:53,725 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:40:53,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [873442919] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:40:53,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:40:53,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 10 [2024-11-18 13:40:53,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162113118] [2024-11-18 13:40:53,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:40:53,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 13:40:53,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:40:53,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 13:40:53,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-18 13:40:53,728 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 13:40:53,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:40:53,772 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2024-11-18 13:40:53,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 13:40:53,772 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 36 [2024-11-18 13:40:53,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:40:53,773 INFO L225 Difference]: With dead ends: 38 [2024-11-18 13:40:53,773 INFO L226 Difference]: Without dead ends: 30 [2024-11-18 13:40:53,773 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-18 13:40:53,778 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 3 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:40:53,778 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 105 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:40:53,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-18 13:40:53,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-11-18 13:40:53,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 19 states have (on average 1.105263157894737) internal successors, (21), 20 states have internal predecessors, (21), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-18 13:40:53,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2024-11-18 13:40:53,786 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 36 [2024-11-18 13:40:53,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:40:53,786 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2024-11-18 13:40:53,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 13:40:53,786 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2024-11-18 13:40:53,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-18 13:40:53,787 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:40:53,787 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:40:53,803 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-18 13:40:53,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:40:53,989 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:40:53,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:40:53,992 INFO L85 PathProgramCache]: Analyzing trace with hash -852190431, now seen corresponding path program 1 times [2024-11-18 13:40:53,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:40:53,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914838417] [2024-11-18 13:40:53,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:40:53,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:40:54,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-18 13:40:54,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1561381895] [2024-11-18 13:40:54,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:40:54,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:40:54,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:40:54,012 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:40:54,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 13:40:54,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:40:54,054 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-18 13:40:54,056 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:40:54,176 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-18 13:40:54,177 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:40:54,460 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-18 13:40:54,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:40:54,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914838417] [2024-11-18 13:40:54,461 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-18 13:40:54,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1561381895] [2024-11-18 13:40:54,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1561381895] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-18 13:40:54,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:40:54,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2024-11-18 13:40:54,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779750167] [2024-11-18 13:40:54,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:40:54,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 13:40:54,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:40:54,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 13:40:54,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-11-18 13:40:54,463 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 13:40:54,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:40:54,522 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2024-11-18 13:40:54,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 13:40:54,523 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 36 [2024-11-18 13:40:54,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:40:54,523 INFO L225 Difference]: With dead ends: 36 [2024-11-18 13:40:54,524 INFO L226 Difference]: Without dead ends: 32 [2024-11-18 13:40:54,524 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-11-18 13:40:54,525 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 5 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:40:54,525 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 81 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:40:54,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-18 13:40:54,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2024-11-18 13:40:54,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 21 states have (on average 1.0476190476190477) internal successors, (22), 21 states have internal predecessors, (22), 7 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-18 13:40:54,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2024-11-18 13:40:54,530 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 36 [2024-11-18 13:40:54,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:40:54,531 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2024-11-18 13:40:54,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 13:40:54,531 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2024-11-18 13:40:54,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-18 13:40:54,532 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:40:54,532 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:40:54,545 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-18 13:40:54,735 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:40:54,736 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:40:54,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:40:54,737 INFO L85 PathProgramCache]: Analyzing trace with hash 394593711, now seen corresponding path program 1 times [2024-11-18 13:40:54,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:40:54,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270618947] [2024-11-18 13:40:54,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:40:54,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:40:54,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:40:54,938 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-18 13:40:54,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:40:54,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270618947] [2024-11-18 13:40:54,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270618947] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:40:54,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [807467029] [2024-11-18 13:40:54,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:40:54,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:40:54,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:40:54,945 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:40:54,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 13:40:55,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:40:55,006 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-18 13:40:55,007 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:40:55,242 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-18 13:40:55,249 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:40:55,361 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-18 13:40:55,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [807467029] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:40:55,364 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:40:55,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 12, 7] total 14 [2024-11-18 13:40:55,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554073446] [2024-11-18 13:40:55,365 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:40:55,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-18 13:40:55,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:40:55,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-18 13:40:55,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-11-18 13:40:55,367 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 12 states have internal predecessors, (30), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 13:40:55,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:40:55,513 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2024-11-18 13:40:55,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 13:40:55,514 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 12 states have internal predecessors, (30), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) Word has length 43 [2024-11-18 13:40:55,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:40:55,514 INFO L225 Difference]: With dead ends: 32 [2024-11-18 13:40:55,514 INFO L226 Difference]: Without dead ends: 0 [2024-11-18 13:40:55,515 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2024-11-18 13:40:55,515 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 6 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:40:55,516 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 112 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:40:55,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-18 13:40:55,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-18 13:40:55,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:40:55,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-18 13:40:55,517 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 43 [2024-11-18 13:40:55,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:40:55,517 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-18 13:40:55,518 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 12 states have internal predecessors, (30), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 13:40:55,518 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-18 13:40:55,518 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-18 13:40:55,520 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-18 13:40:55,533 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-18 13:40:55,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:40:55,727 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-11-18 13:40:55,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-18 13:40:55,812 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-18 13:40:55,827 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 01:40:55 BoogieIcfgContainer [2024-11-18 13:40:55,827 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-18 13:40:55,828 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-18 13:40:55,828 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-18 13:40:55,828 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-18 13:40:55,828 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:40:52" (3/4) ... [2024-11-18 13:40:55,830 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-18 13:40:55,833 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2024-11-18 13:40:55,833 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-11-18 13:40:55,835 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2024-11-18 13:40:55,835 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-18 13:40:55,835 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-18 13:40:55,836 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-18 13:40:55,902 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-18 13:40:55,902 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-18 13:40:55,902 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-18 13:40:55,903 INFO L158 Benchmark]: Toolchain (without parser) took 4375.05ms. Allocated memory was 176.2MB in the beginning and 274.7MB in the end (delta: 98.6MB). Free memory was 105.6MB in the beginning and 177.6MB in the end (delta: -72.0MB). Peak memory consumption was 27.1MB. Max. memory is 16.1GB. [2024-11-18 13:40:55,903 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 176.2MB. Free memory was 131.4MB in the beginning and 131.2MB in the end (delta: 160.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-18 13:40:55,903 INFO L158 Benchmark]: CACSL2BoogieTranslator took 231.29ms. Allocated memory is still 176.2MB. Free memory was 105.4MB in the beginning and 92.8MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-18 13:40:55,904 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.71ms. Allocated memory is still 176.2MB. Free memory was 92.8MB in the beginning and 91.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-18 13:40:55,904 INFO L158 Benchmark]: Boogie Preprocessor took 41.53ms. Allocated memory is still 176.2MB. Free memory was 91.4MB in the beginning and 89.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-18 13:40:55,904 INFO L158 Benchmark]: RCFGBuilder took 322.75ms. Allocated memory is still 176.2MB. Free memory was 89.7MB in the beginning and 137.9MB in the end (delta: -48.2MB). Peak memory consumption was 8.8MB. Max. memory is 16.1GB. [2024-11-18 13:40:55,904 INFO L158 Benchmark]: TraceAbstraction took 3659.10ms. Allocated memory was 176.2MB in the beginning and 274.7MB in the end (delta: 98.6MB). Free memory was 137.3MB in the beginning and 181.7MB in the end (delta: -44.5MB). Peak memory consumption was 53.9MB. Max. memory is 16.1GB. [2024-11-18 13:40:55,905 INFO L158 Benchmark]: Witness Printer took 74.94ms. Allocated memory is still 274.7MB. Free memory was 181.7MB in the beginning and 177.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-18 13:40:55,910 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 176.2MB. Free memory was 131.4MB in the beginning and 131.2MB in the end (delta: 160.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 231.29ms. Allocated memory is still 176.2MB. Free memory was 105.4MB in the beginning and 92.8MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.71ms. Allocated memory is still 176.2MB. Free memory was 92.8MB in the beginning and 91.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 41.53ms. Allocated memory is still 176.2MB. Free memory was 91.4MB in the beginning and 89.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 322.75ms. Allocated memory is still 176.2MB. Free memory was 89.7MB in the beginning and 137.9MB in the end (delta: -48.2MB). Peak memory consumption was 8.8MB. Max. memory is 16.1GB. * TraceAbstraction took 3659.10ms. Allocated memory was 176.2MB in the beginning and 274.7MB in the end (delta: 98.6MB). Free memory was 137.3MB in the beginning and 181.7MB in the end (delta: -44.5MB). Peak memory consumption was 53.9MB. Max. memory is 16.1GB. * Witness Printer took 74.94ms. Allocated memory is still 274.7MB. Free memory was 181.7MB in the beginning and 177.6MB 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: 18]: 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, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.5s, OverallIterations: 5, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 20 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 18 mSDsluCounter, 414 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 303 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 185 IncrementalHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 111 mSDtfsCounter, 185 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 268 GetRequests, 228 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=4, InterpolantAutomatonStates: 28, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 346 NumberOfCodeBlocks, 346 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 350 ConstructedInterpolants, 0 QuantifiedInterpolants, 714 SizeOfPredicates, 6 NumberOfNonLiveVariables, 443 ConjunctsInSsa, 58 ConjunctsInUnsatCore, 10 InterpolantComputations, 4 PerfectInterpolantSequences, 270/285 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: 36]: Loop Invariant Derived loop invariant: (((((__int128) x + y) == (((__int128) x * z) + 1)) && (1 <= c)) && (1 <= k)) - ProcedureContractResult [Line: 12]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not. Ensures: (cond != 0) - ProcedureContractResult [Line: 15]: 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! [2024-11-18 13:40:55,929 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