./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound5.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/cohendiv-ll_unwindbound5.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 011044826c7a01c153d09406112c335d599fb158d7a4b72e6a624d5427477c0d --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 13:29:58,987 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 13:29:59,039 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 13:29:59,043 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 13:29:59,043 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 13:29:59,068 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 13:29:59,070 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 13:29:59,070 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 13:29:59,071 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 13:29:59,071 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 13:29:59,072 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 13:29:59,072 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 13:29:59,072 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 13:29:59,073 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 13:29:59,074 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 13:29:59,074 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 13:29:59,074 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 13:29:59,074 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 13:29:59,075 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 13:29:59,075 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 13:29:59,075 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 13:29:59,078 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 13:29:59,079 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 13:29:59,079 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 13:29:59,079 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 13:29:59,079 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 13:29:59,079 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 13:29:59,079 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 13:29:59,080 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 13:29:59,080 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 13:29:59,080 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 13:29:59,080 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 13:29:59,080 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 13:29:59,080 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 13:29:59,081 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 13:29:59,081 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 13:29:59,081 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 13:29:59,081 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 13:29:59,081 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 13:29:59,081 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 13:29:59,081 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 13:29:59,082 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 13:29:59,082 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 011044826c7a01c153d09406112c335d599fb158d7a4b72e6a624d5427477c0d [2024-11-18 13:29:59,307 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 13:29:59,330 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 13:29:59,335 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 13:29:59,336 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 13:29:59,340 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 13:29:59,341 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound5.c [2024-11-18 13:30:00,534 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 13:30:00,698 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 13:30:00,699 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound5.c [2024-11-18 13:30:00,705 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9461aec30/cea63e338f2b45429d1856423d45af6c/FLAG991fb3db3 [2024-11-18 13:30:01,124 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9461aec30/cea63e338f2b45429d1856423d45af6c [2024-11-18 13:30:01,127 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 13:30:01,129 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 13:30:01,131 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 13:30:01,132 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 13:30:01,136 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 13:30:01,137 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:30:01" (1/1) ... [2024-11-18 13:30:01,137 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7736a3ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:30:01, skipping insertion in model container [2024-11-18 13:30:01,138 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:30:01" (1/1) ... [2024-11-18 13:30:01,156 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 13:30:01,363 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/cohendiv-ll_unwindbound5.c[576,589] [2024-11-18 13:30:01,393 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 13:30:01,400 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 13:30:01,416 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/cohendiv-ll_unwindbound5.c[576,589] [2024-11-18 13:30:01,424 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 13:30:01,445 INFO L204 MainTranslator]: Completed translation [2024-11-18 13:30:01,446 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:30:01 WrapperNode [2024-11-18 13:30:01,446 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 13:30:01,446 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 13:30:01,447 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 13:30:01,447 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 13:30:01,453 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:30:01" (1/1) ... [2024-11-18 13:30:01,459 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:30:01" (1/1) ... [2024-11-18 13:30:01,475 INFO L138 Inliner]: procedures = 14, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 67 [2024-11-18 13:30:01,476 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 13:30:01,477 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 13:30:01,480 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 13:30:01,480 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 13:30:01,488 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:30:01" (1/1) ... [2024-11-18 13:30:01,490 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:30:01" (1/1) ... [2024-11-18 13:30:01,495 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:30:01" (1/1) ... [2024-11-18 13:30:01,515 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 13:30:01,517 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:30:01" (1/1) ... [2024-11-18 13:30:01,518 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:30:01" (1/1) ... [2024-11-18 13:30:01,520 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:30:01" (1/1) ... [2024-11-18 13:30:01,528 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:30:01" (1/1) ... [2024-11-18 13:30:01,535 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:30:01" (1/1) ... [2024-11-18 13:30:01,536 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:30:01" (1/1) ... [2024-11-18 13:30:01,538 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 13:30:01,541 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 13:30:01,541 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 13:30:01,542 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 13:30:01,542 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:30:01" (1/1) ... [2024-11-18 13:30:01,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 13:30:01,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:30:01,591 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 13:30:01,593 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 13:30:01,629 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 13:30:01,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 13:30:01,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 13:30:01,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 13:30:01,630 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-18 13:30:01,630 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-18 13:30:01,678 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 13:30:01,680 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 13:30:01,798 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-11-18 13:30:01,798 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 13:30:01,809 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 13:30:01,809 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-18 13:30:01,809 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:30:01 BoogieIcfgContainer [2024-11-18 13:30:01,810 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 13:30:01,811 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 13:30:01,812 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 13:30:01,814 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 13:30:01,814 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 01:30:01" (1/3) ... [2024-11-18 13:30:01,815 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1743ab6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:30:01, skipping insertion in model container [2024-11-18 13:30:01,815 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:30:01" (2/3) ... [2024-11-18 13:30:01,816 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1743ab6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:30:01, skipping insertion in model container [2024-11-18 13:30:01,816 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:30:01" (3/3) ... [2024-11-18 13:30:01,817 INFO L112 eAbstractionObserver]: Analyzing ICFG cohendiv-ll_unwindbound5.c [2024-11-18 13:30:01,828 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 13:30:01,828 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 13:30:01,891 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 13:30:01,896 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;@7888fa0b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 13:30:01,896 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 13:30:01,899 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 20 states have internal predecessors, (28), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-18 13:30:01,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-18 13:30:01,903 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:30:01,904 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:30:01,904 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:30:01,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:30:01,907 INFO L85 PathProgramCache]: Analyzing trace with hash -555122024, now seen corresponding path program 1 times [2024-11-18 13:30:01,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:30:01,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105216621] [2024-11-18 13:30:01,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:30:01,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:30:01,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:30:02,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:30:02,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:30:02,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105216621] [2024-11-18 13:30:02,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105216621] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:30:02,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 13:30:02,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 13:30:02,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573059200] [2024-11-18 13:30:02,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:30:02,027 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 13:30:02,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:30:02,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 13:30:02,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 13:30:02,045 INFO L87 Difference]: Start difference. First operand has 29 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 20 states have internal predecessors, (28), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:30:02,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:30:02,061 INFO L93 Difference]: Finished difference Result 55 states and 87 transitions. [2024-11-18 13:30:02,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 13:30:02,062 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-18 13:30:02,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:30:02,067 INFO L225 Difference]: With dead ends: 55 [2024-11-18 13:30:02,070 INFO L226 Difference]: Without dead ends: 25 [2024-11-18 13:30:02,072 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 13:30:02,074 INFO L432 NwaCegarLoop]: 38 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, 38 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 13:30:02,075 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:30:02,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-18 13:30:02,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-11-18 13:30:02,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.3125) internal successors, (21), 17 states have internal predecessors, (21), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-18 13:30:02,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 34 transitions. [2024-11-18 13:30:02,099 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 34 transitions. Word has length 9 [2024-11-18 13:30:02,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:30:02,099 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 34 transitions. [2024-11-18 13:30:02,099 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:30:02,099 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 34 transitions. [2024-11-18 13:30:02,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-18 13:30:02,100 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:30:02,100 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:30:02,100 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 13:30:02,101 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:30:02,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:30:02,102 INFO L85 PathProgramCache]: Analyzing trace with hash -1985514477, now seen corresponding path program 1 times [2024-11-18 13:30:02,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:30:02,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222094689] [2024-11-18 13:30:02,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:30:02,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:30:02,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:30:02,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:30:02,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:30:02,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222094689] [2024-11-18 13:30:02,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222094689] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:30:02,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 13:30:02,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 13:30:02,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046837971] [2024-11-18 13:30:02,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:30:02,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 13:30:02,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:30:02,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 13:30:02,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 13:30:02,171 INFO L87 Difference]: Start difference. First operand 25 states and 34 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:30:02,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:30:02,194 INFO L93 Difference]: Finished difference Result 34 states and 43 transitions. [2024-11-18 13:30:02,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 13:30:02,195 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-18 13:30:02,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:30:02,196 INFO L225 Difference]: With dead ends: 34 [2024-11-18 13:30:02,196 INFO L226 Difference]: Without dead ends: 27 [2024-11-18 13:30:02,199 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 13:30:02,203 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:30:02,204 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 89 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:30:02,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-18 13:30:02,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-11-18 13:30:02,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 19 states have internal predecessors, (23), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-18 13:30:02,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 36 transitions. [2024-11-18 13:30:02,217 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 36 transitions. Word has length 10 [2024-11-18 13:30:02,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:30:02,217 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 36 transitions. [2024-11-18 13:30:02,217 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:30:02,217 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 36 transitions. [2024-11-18 13:30:02,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-18 13:30:02,217 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:30:02,217 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:30:02,217 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 13:30:02,218 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:30:02,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:30:02,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1984024927, now seen corresponding path program 1 times [2024-11-18 13:30:02,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:30:02,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776085637] [2024-11-18 13:30:02,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:30:02,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:30:02,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-18 13:30:02,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [476185901] [2024-11-18 13:30:02,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:30:02,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:30:02,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:30:02,263 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 13:30:02,264 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 13:30:02,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:30:02,313 INFO L255 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-18 13:30:02,317 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:30:02,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:30:02,387 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:30:02,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:30:02,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776085637] [2024-11-18 13:30:02,388 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-18 13:30:02,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [476185901] [2024-11-18 13:30:02,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [476185901] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:30:02,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 13:30:02,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 13:30:02,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255211442] [2024-11-18 13:30:02,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:30:02,389 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 13:30:02,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:30:02,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 13:30:02,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 13:30:02,390 INFO L87 Difference]: Start difference. First operand 27 states and 36 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:30:02,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:30:02,426 INFO L93 Difference]: Finished difference Result 37 states and 48 transitions. [2024-11-18 13:30:02,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 13:30:02,427 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-18 13:30:02,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:30:02,428 INFO L225 Difference]: With dead ends: 37 [2024-11-18 13:30:02,428 INFO L226 Difference]: Without dead ends: 35 [2024-11-18 13:30:02,428 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 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 13:30:02,429 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 4 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:30:02,429 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 111 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:30:02,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-11-18 13:30:02,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2024-11-18 13:30:02,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 23 states have internal predecessors, (26), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-18 13:30:02,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 41 transitions. [2024-11-18 13:30:02,435 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 41 transitions. Word has length 10 [2024-11-18 13:30:02,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:30:02,436 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 41 transitions. [2024-11-18 13:30:02,436 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:30:02,436 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 41 transitions. [2024-11-18 13:30:02,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-18 13:30:02,436 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:30:02,437 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:30:02,449 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 13:30:02,640 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:30:02,641 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:30:02,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:30:02,641 INFO L85 PathProgramCache]: Analyzing trace with hash -2084809189, now seen corresponding path program 1 times [2024-11-18 13:30:02,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:30:02,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824957718] [2024-11-18 13:30:02,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:30:02,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:30:02,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-18 13:30:02,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2121313236] [2024-11-18 13:30:02,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:30:02,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:30:02,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:30:02,660 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 13:30:02,661 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 13:30:02,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:30:02,696 INFO L255 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-18 13:30:02,697 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:30:02,737 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:30:02,737 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:30:02,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:30:02,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824957718] [2024-11-18 13:30:02,737 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-18 13:30:02,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2121313236] [2024-11-18 13:30:02,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2121313236] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:30:02,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 13:30:02,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 13:30:02,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86605696] [2024-11-18 13:30:02,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:30:02,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 13:30:02,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:30:02,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 13:30:02,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 13:30:02,739 INFO L87 Difference]: Start difference. First operand 32 states and 41 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-18 13:30:02,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:30:02,795 INFO L93 Difference]: Finished difference Result 50 states and 66 transitions. [2024-11-18 13:30:02,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 13:30:02,797 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), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2024-11-18 13:30:02,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:30:02,797 INFO L225 Difference]: With dead ends: 50 [2024-11-18 13:30:02,797 INFO L226 Difference]: Without dead ends: 47 [2024-11-18 13:30:02,798 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 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 13:30:02,798 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 11 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:30:02,799 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 100 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:30:02,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-18 13:30:02,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2024-11-18 13:30:02,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 29 states have (on average 1.2413793103448276) internal successors, (36), 30 states have internal predecessors, (36), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-18 13:30:02,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 61 transitions. [2024-11-18 13:30:02,813 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 61 transitions. Word has length 15 [2024-11-18 13:30:02,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:30:02,813 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 61 transitions. [2024-11-18 13:30:02,813 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), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-18 13:30:02,814 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 61 transitions. [2024-11-18 13:30:02,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-18 13:30:02,814 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:30:02,814 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:30:02,827 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 13:30:03,015 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,SelfDestructingSolverStorable3 [2024-11-18 13:30:03,015 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:30:03,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:30:03,015 INFO L85 PathProgramCache]: Analyzing trace with hash -2002825724, now seen corresponding path program 1 times [2024-11-18 13:30:03,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:30:03,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101464566] [2024-11-18 13:30:03,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:30:03,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:30:03,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-18 13:30:03,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1119216629] [2024-11-18 13:30:03,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:30:03,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:30:03,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:30:03,058 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 13:30:03,066 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 13:30:03,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:30:03,116 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-18 13:30:03,117 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:30:03,191 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 13:30:03,192 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:30:03,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:30:03,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101464566] [2024-11-18 13:30:03,193 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-18 13:30:03,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119216629] [2024-11-18 13:30:03,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119216629] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:30:03,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 13:30:03,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 13:30:03,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982772712] [2024-11-18 13:30:03,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:30:03,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 13:30:03,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:30:03,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 13:30:03,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 13:30:03,195 INFO L87 Difference]: Start difference. First operand 46 states and 61 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, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-18 13:30:03,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:30:03,256 INFO L93 Difference]: Finished difference Result 75 states and 105 transitions. [2024-11-18 13:30:03,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 13:30:03,257 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, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2024-11-18 13:30:03,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:30:03,259 INFO L225 Difference]: With dead ends: 75 [2024-11-18 13:30:03,259 INFO L226 Difference]: Without dead ends: 73 [2024-11-18 13:30:03,260 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 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 13:30:03,261 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 11 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:30:03,262 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 117 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:30:03,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-11-18 13:30:03,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 66. [2024-11-18 13:30:03,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 41 states have (on average 1.2926829268292683) internal successors, (53), 43 states have internal predecessors, (53), 20 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-18 13:30:03,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 92 transitions. [2024-11-18 13:30:03,279 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 92 transitions. Word has length 23 [2024-11-18 13:30:03,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:30:03,280 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 92 transitions. [2024-11-18 13:30:03,280 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, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-18 13:30:03,280 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 92 transitions. [2024-11-18 13:30:03,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-18 13:30:03,280 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:30:03,280 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:30:03,297 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 13:30:03,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:30:03,483 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:30:03,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:30:03,483 INFO L85 PathProgramCache]: Analyzing trace with hash -840648207, now seen corresponding path program 1 times [2024-11-18 13:30:03,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:30:03,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512772829] [2024-11-18 13:30:03,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:30:03,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:30:03,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:30:03,615 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 13:30:03,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:30:03,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512772829] [2024-11-18 13:30:03,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512772829] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:30:03,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 13:30:03,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 13:30:03,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835880114] [2024-11-18 13:30:03,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:30:03,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 13:30:03,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:30:03,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 13:30:03,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 13:30:03,619 INFO L87 Difference]: Start difference. First operand 66 states and 92 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-18 13:30:03,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:30:03,654 INFO L93 Difference]: Finished difference Result 105 states and 145 transitions. [2024-11-18 13:30:03,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 13:30:03,655 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 26 [2024-11-18 13:30:03,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:30:03,659 INFO L225 Difference]: With dead ends: 105 [2024-11-18 13:30:03,660 INFO L226 Difference]: Without dead ends: 70 [2024-11-18 13:30:03,660 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 13:30:03,661 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 5 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:30:03,662 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 92 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:30:03,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-11-18 13:30:03,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2024-11-18 13:30:03,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 44 states have (on average 1.25) internal successors, (55), 46 states have internal predecessors, (55), 20 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-18 13:30:03,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 94 transitions. [2024-11-18 13:30:03,675 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 94 transitions. Word has length 26 [2024-11-18 13:30:03,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:30:03,675 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 94 transitions. [2024-11-18 13:30:03,675 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-18 13:30:03,675 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 94 transitions. [2024-11-18 13:30:03,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-18 13:30:03,676 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:30:03,676 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:30:03,676 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 13:30:03,676 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:30:03,677 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:30:03,677 INFO L85 PathProgramCache]: Analyzing trace with hash 2012484164, now seen corresponding path program 1 times [2024-11-18 13:30:03,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:30:03,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865098213] [2024-11-18 13:30:03,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:30:03,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:30:03,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:30:03,828 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-18 13:30:03,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:30:03,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865098213] [2024-11-18 13:30:03,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865098213] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:30:03,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 13:30:03,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-18 13:30:03,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416412911] [2024-11-18 13:30:03,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:30:03,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 13:30:03,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:30:03,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 13:30:03,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-18 13:30:03,833 INFO L87 Difference]: Start difference. First operand 70 states and 94 transitions. Second operand has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-18 13:30:03,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:30:03,893 INFO L93 Difference]: Finished difference Result 76 states and 99 transitions. [2024-11-18 13:30:03,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 13:30:03,893 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 33 [2024-11-18 13:30:03,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:30:03,894 INFO L225 Difference]: With dead ends: 76 [2024-11-18 13:30:03,894 INFO L226 Difference]: Without dead ends: 74 [2024-11-18 13:30:03,894 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-18 13:30:03,895 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 18 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:30:03,895 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 119 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:30:03,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-11-18 13:30:03,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2024-11-18 13:30:03,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 47 states have (on average 1.2340425531914894) internal successors, (58), 49 states have internal predecessors, (58), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-18 13:30:03,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 97 transitions. [2024-11-18 13:30:03,909 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 97 transitions. Word has length 33 [2024-11-18 13:30:03,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:30:03,910 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 97 transitions. [2024-11-18 13:30:03,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-18 13:30:03,910 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 97 transitions. [2024-11-18 13:30:03,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-18 13:30:03,911 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:30:03,911 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:30:03,911 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 13:30:03,911 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:30:03,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:30:03,911 INFO L85 PathProgramCache]: Analyzing trace with hash -2020901362, now seen corresponding path program 1 times [2024-11-18 13:30:03,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:30:03,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984025205] [2024-11-18 13:30:03,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:30:03,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:30:03,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:30:04,077 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 15 proven. 7 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-18 13:30:04,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:30:04,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984025205] [2024-11-18 13:30:04,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984025205] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:30:04,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266514768] [2024-11-18 13:30:04,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:30:04,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:30:04,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:30:04,080 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 13:30:04,081 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 13:30:04,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:30:04,122 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-18 13:30:04,125 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:30:04,195 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-18 13:30:04,196 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:30:04,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266514768] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:30:04,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:30:04,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2024-11-18 13:30:04,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27783492] [2024-11-18 13:30:04,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:30:04,197 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 13:30:04,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:30:04,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 13:30:04,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-18 13:30:04,201 INFO L87 Difference]: Start difference. First operand 74 states and 97 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 13:30:04,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:30:04,284 INFO L93 Difference]: Finished difference Result 87 states and 113 transitions. [2024-11-18 13:30:04,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 13:30:04,286 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 39 [2024-11-18 13:30:04,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:30:04,287 INFO L225 Difference]: With dead ends: 87 [2024-11-18 13:30:04,287 INFO L226 Difference]: Without dead ends: 85 [2024-11-18 13:30:04,288 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-11-18 13:30:04,288 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 11 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:30:04,288 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 155 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:30:04,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-11-18 13:30:04,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 80. [2024-11-18 13:30:04,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 50 states have (on average 1.22) internal successors, (61), 54 states have internal predecessors, (61), 22 states have call successors, (22), 7 states have call predecessors, (22), 7 states have return successors, (21), 18 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-18 13:30:04,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 104 transitions. [2024-11-18 13:30:04,304 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 104 transitions. Word has length 39 [2024-11-18 13:30:04,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:30:04,307 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 104 transitions. [2024-11-18 13:30:04,307 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 13:30:04,307 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 104 transitions. [2024-11-18 13:30:04,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-18 13:30:04,308 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:30:04,308 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 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] [2024-11-18 13:30:04,322 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 13:30:04,512 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:30:04,518 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:30:04,518 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:30:04,518 INFO L85 PathProgramCache]: Analyzing trace with hash 803844641, now seen corresponding path program 1 times [2024-11-18 13:30:04,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:30:04,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425885189] [2024-11-18 13:30:04,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:30:04,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:30:04,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:30:04,591 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-18 13:30:04,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:30:04,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425885189] [2024-11-18 13:30:04,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425885189] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:30:04,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576987598] [2024-11-18 13:30:04,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:30:04,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:30:04,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:30:04,596 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 13:30:04,604 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 13:30:04,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:30:04,650 INFO L255 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-18 13:30:04,651 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:30:04,702 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 26 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-18 13:30:04,702 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:30:04,781 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-18 13:30:04,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [576987598] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:30:04,781 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:30:04,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 6] total 9 [2024-11-18 13:30:04,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97029879] [2024-11-18 13:30:04,782 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:30:04,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-18 13:30:04,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:30:04,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-18 13:30:04,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-18 13:30:04,784 INFO L87 Difference]: Start difference. First operand 80 states and 104 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 5 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2024-11-18 13:30:04,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:30:04,926 INFO L93 Difference]: Finished difference Result 191 states and 229 transitions. [2024-11-18 13:30:04,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-18 13:30:04,927 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 5 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 42 [2024-11-18 13:30:04,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:30:04,928 INFO L225 Difference]: With dead ends: 191 [2024-11-18 13:30:04,930 INFO L226 Difference]: Without dead ends: 184 [2024-11-18 13:30:04,930 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 80 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2024-11-18 13:30:04,931 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 57 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:30:04,931 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 142 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:30:04,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2024-11-18 13:30:04,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 170. [2024-11-18 13:30:04,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 111 states have (on average 1.1891891891891893) internal successors, (132), 117 states have internal predecessors, (132), 39 states have call successors, (39), 19 states have call predecessors, (39), 19 states have return successors, (36), 33 states have call predecessors, (36), 36 states have call successors, (36) [2024-11-18 13:30:04,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 207 transitions. [2024-11-18 13:30:04,971 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 207 transitions. Word has length 42 [2024-11-18 13:30:04,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:30:04,971 INFO L471 AbstractCegarLoop]: Abstraction has 170 states and 207 transitions. [2024-11-18 13:30:04,972 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 5 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2024-11-18 13:30:04,972 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 207 transitions. [2024-11-18 13:30:04,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-18 13:30:04,973 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:30:04,973 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 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 13:30:04,989 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-18 13:30:05,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:30:05,178 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:30:05,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:30:05,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1528082637, now seen corresponding path program 1 times [2024-11-18 13:30:05,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:30:05,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960934971] [2024-11-18 13:30:05,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:30:05,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:30:05,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-18 13:30:05,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1634714780] [2024-11-18 13:30:05,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:30:05,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:30:05,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:30:05,199 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:30:05,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-18 13:30:05,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:30:05,253 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-18 13:30:05,255 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:30:05,505 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-18 13:30:05,505 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:30:05,727 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-18 13:30:05,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:30:05,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960934971] [2024-11-18 13:30:05,729 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-18 13:30:05,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634714780] [2024-11-18 13:30:05,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1634714780] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-18 13:30:05,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:30:05,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2024-11-18 13:30:05,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220477878] [2024-11-18 13:30:05,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:30:05,730 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 13:30:05,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:30:05,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 13:30:05,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2024-11-18 13:30:05,731 INFO L87 Difference]: Start difference. First operand 170 states and 207 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-18 13:30:05,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:30:05,869 INFO L93 Difference]: Finished difference Result 184 states and 220 transitions. [2024-11-18 13:30:05,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 13:30:05,873 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 47 [2024-11-18 13:30:05,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:30:05,874 INFO L225 Difference]: With dead ends: 184 [2024-11-18 13:30:05,874 INFO L226 Difference]: Without dead ends: 179 [2024-11-18 13:30:05,874 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2024-11-18 13:30:05,875 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 35 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:30:05,875 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 83 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:30:05,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2024-11-18 13:30:05,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 171. [2024-11-18 13:30:05,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 112 states have (on average 1.1339285714285714) internal successors, (127), 117 states have internal predecessors, (127), 36 states have call successors, (36), 22 states have call predecessors, (36), 22 states have return successors, (36), 31 states have call predecessors, (36), 36 states have call successors, (36) [2024-11-18 13:30:05,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 199 transitions. [2024-11-18 13:30:05,906 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 199 transitions. Word has length 47 [2024-11-18 13:30:05,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:30:05,907 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 199 transitions. [2024-11-18 13:30:05,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-18 13:30:05,907 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 199 transitions. [2024-11-18 13:30:05,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-18 13:30:05,909 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:30:05,909 INFO L215 NwaCegarLoop]: trace histogram [10, 9, 9, 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] [2024-11-18 13:30:05,923 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-18 13:30:06,110 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:30:06,111 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:30:06,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:30:06,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1339763981, now seen corresponding path program 1 times [2024-11-18 13:30:06,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:30:06,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051703313] [2024-11-18 13:30:06,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:30:06,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:30:06,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:30:06,319 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 39 proven. 7 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2024-11-18 13:30:06,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:30:06,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051703313] [2024-11-18 13:30:06,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051703313] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:30:06,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012983325] [2024-11-18 13:30:06,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:30:06,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:30:06,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:30:06,323 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) [2024-11-18 13:30:06,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-18 13:30:06,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:30:06,367 INFO L255 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-18 13:30:06,369 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:30:06,420 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 39 proven. 7 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2024-11-18 13:30:06,420 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:30:06,506 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 39 proven. 7 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2024-11-18 13:30:06,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1012983325] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:30:06,506 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:30:06,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 11 [2024-11-18 13:30:06,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418513328] [2024-11-18 13:30:06,507 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:30:06,507 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-18 13:30:06,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:30:06,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-18 13:30:06,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-18 13:30:06,508 INFO L87 Difference]: Start difference. First operand 171 states and 199 transitions. Second operand has 11 states, 10 states have (on average 2.6) internal successors, (26), 8 states have internal predecessors, (26), 4 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-18 13:30:06,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:30:06,611 INFO L93 Difference]: Finished difference Result 183 states and 208 transitions. [2024-11-18 13:30:06,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 13:30:06,611 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.6) internal successors, (26), 8 states have internal predecessors, (26), 4 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 63 [2024-11-18 13:30:06,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:30:06,613 INFO L225 Difference]: With dead ends: 183 [2024-11-18 13:30:06,613 INFO L226 Difference]: Without dead ends: 0 [2024-11-18 13:30:06,615 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 120 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-11-18 13:30:06,615 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 20 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:30:06,615 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 84 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:30:06,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-18 13:30:06,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-18 13:30:06,616 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 13:30:06,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-18 13:30:06,616 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 63 [2024-11-18 13:30:06,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:30:06,616 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-18 13:30:06,616 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.6) internal successors, (26), 8 states have internal predecessors, (26), 4 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-18 13:30:06,616 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-18 13:30:06,616 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-18 13:30:06,619 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-18 13:30:06,636 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-18 13:30:06,823 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:30:06,826 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:30:06,828 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-18 13:30:07,406 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-18 13:30:07,424 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 01:30:07 BoogieIcfgContainer [2024-11-18 13:30:07,427 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-18 13:30:07,428 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-18 13:30:07,428 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-18 13:30:07,428 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-18 13:30:07,428 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:30:01" (3/4) ... [2024-11-18 13:30:07,430 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-18 13:30:07,434 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-11-18 13:30:07,437 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2024-11-18 13:30:07,437 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-18 13:30:07,437 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-18 13:30:07,437 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-18 13:30:07,521 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-18 13:30:07,521 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-18 13:30:07,521 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-18 13:30:07,522 INFO L158 Benchmark]: Toolchain (without parser) took 6392.89ms. Allocated memory was 144.7MB in the beginning and 178.3MB in the end (delta: 33.6MB). Free memory was 102.1MB in the beginning and 56.3MB in the end (delta: 45.7MB). Peak memory consumption was 81.7MB. Max. memory is 16.1GB. [2024-11-18 13:30:07,522 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 107.0MB. Free memory is still 80.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-18 13:30:07,522 INFO L158 Benchmark]: CACSL2BoogieTranslator took 315.11ms. Allocated memory is still 144.7MB. Free memory was 101.7MB in the beginning and 89.2MB in the end (delta: 12.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-18 13:30:07,523 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.74ms. Allocated memory is still 144.7MB. Free memory was 89.2MB in the beginning and 87.4MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-18 13:30:07,523 INFO L158 Benchmark]: Boogie Preprocessor took 60.65ms. Allocated memory is still 144.7MB. Free memory was 87.4MB in the beginning and 85.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-18 13:30:07,523 INFO L158 Benchmark]: RCFGBuilder took 268.45ms. Allocated memory is still 144.7MB. Free memory was 85.8MB in the beginning and 74.5MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-11-18 13:30:07,523 INFO L158 Benchmark]: TraceAbstraction took 5615.84ms. Allocated memory was 144.7MB in the beginning and 178.3MB in the end (delta: 33.6MB). Free memory was 73.6MB in the beginning and 61.6MB in the end (delta: 12.1MB). Peak memory consumption was 62.8MB. Max. memory is 16.1GB. [2024-11-18 13:30:07,524 INFO L158 Benchmark]: Witness Printer took 93.72ms. Allocated memory is still 178.3MB. Free memory was 60.5MB in the beginning and 56.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-18 13:30:07,525 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 107.0MB. Free memory is still 80.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 315.11ms. Allocated memory is still 144.7MB. Free memory was 101.7MB in the beginning and 89.2MB in the end (delta: 12.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.74ms. Allocated memory is still 144.7MB. Free memory was 89.2MB in the beginning and 87.4MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 60.65ms. Allocated memory is still 144.7MB. Free memory was 87.4MB in the beginning and 85.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 268.45ms. Allocated memory is still 144.7MB. Free memory was 85.8MB in the beginning and 74.5MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 5615.84ms. Allocated memory was 144.7MB in the beginning and 178.3MB in the end (delta: 33.6MB). Free memory was 73.6MB in the beginning and 61.6MB in the end (delta: 12.1MB). Peak memory consumption was 62.8MB. Max. memory is 16.1GB. * Witness Printer took 93.72ms. Allocated memory is still 178.3MB. Free memory was 60.5MB in the beginning and 56.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.9s, OverallIterations: 11, TraceHistogramMax: 10, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 192 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 172 mSDsluCounter, 1130 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 802 mSDsCounter, 65 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 460 IncrementalHoareTripleChecker+Invalid, 525 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 65 mSolverCounterUnsat, 328 mSDtfsCounter, 460 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 437 GetRequests, 360 SyntacticMatches, 5 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=171occurred in iteration=10, InterpolantAutomatonStates: 63, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 38 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 556 NumberOfCodeBlocks, 556 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 596 ConstructedInterpolants, 0 QuantifiedInterpolants, 1574 SizeOfPredicates, 13 NumberOfNonLiveVariables, 712 ConjunctsInSsa, 69 ConjunctsInUnsatCore, 17 InterpolantComputations, 9 PerfectInterpolantSequences, 905/967 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: 46]: Loop Invariant Derived loop invariant: ((((x == (r + ((__int128) q * y))) && (1 <= y)) && (1 <= r)) && (((__int128) b + x) == ((((__int128) a * y) + r) + ((__int128) q * y)))) - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: (((x == (r + ((__int128) q * y))) && (1 <= y)) && (((__int128) b + x) == ((((__int128) a * y) + r) + ((__int128) q * y)))) - ProcedureContractResult [Line: 14]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (cond != 0) Ensures: ((cond != 0) && (counter == \old(counter))) RESULT: Ultimate proved your program to be correct! [2024-11-18 13:30:07,546 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE