./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound100.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound100.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 13f01b13f842e70fa5dc0726b8b5b83cfbe12eb21a3c45812a2355ca865a56c3 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 02:02:25,284 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 02:02:25,362 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-11 02:02:25,367 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 02:02:25,367 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 02:02:25,402 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 02:02:25,403 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 02:02:25,404 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 02:02:25,405 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 02:02:25,406 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 02:02:25,407 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 02:02:25,407 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 02:02:25,408 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 02:02:25,408 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 02:02:25,410 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 02:02:25,410 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 02:02:25,411 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 02:02:25,411 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 02:02:25,411 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 02:02:25,411 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 02:02:25,412 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 02:02:25,415 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 02:02:25,416 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 02:02:25,416 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 02:02:25,416 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 02:02:25,416 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 02:02:25,417 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 02:02:25,417 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 02:02:25,417 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 02:02:25,418 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 02:02:25,418 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 02:02:25,418 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 02:02:25,418 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 02:02:25,418 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 02:02:25,419 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 02:02:25,419 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 02:02:25,419 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 02:02:25,419 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 02:02:25,420 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 02:02:25,420 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 02:02:25,420 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 02:02:25,421 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 02:02:25,422 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 13f01b13f842e70fa5dc0726b8b5b83cfbe12eb21a3c45812a2355ca865a56c3 [2024-10-11 02:02:25,665 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 02:02:25,691 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 02:02:25,694 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 02:02:25,696 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 02:02:25,696 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 02:02:25,697 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound100.c [2024-10-11 02:02:27,141 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 02:02:27,325 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 02:02:27,325 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound100.c [2024-10-11 02:02:27,332 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/62e7c1897/9c002ebb5a7048f48808c324db7b2edf/FLAG74b305b15 [2024-10-11 02:02:27,347 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/62e7c1897/9c002ebb5a7048f48808c324db7b2edf [2024-10-11 02:02:27,349 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 02:02:27,350 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 02:02:27,352 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 02:02:27,352 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 02:02:27,357 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 02:02:27,358 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:02:27" (1/1) ... [2024-10-11 02:02:27,359 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cd63af8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:02:27, skipping insertion in model container [2024-10-11 02:02:27,359 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:02:27" (1/1) ... [2024-10-11 02:02:27,382 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 02:02:27,543 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound100.c[597,610] [2024-10-11 02:02:27,561 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 02:02:27,569 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 02:02:27,579 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound100.c[597,610] [2024-10-11 02:02:27,586 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 02:02:27,605 INFO L204 MainTranslator]: Completed translation [2024-10-11 02:02:27,606 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:02:27 WrapperNode [2024-10-11 02:02:27,606 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 02:02:27,607 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 02:02:27,607 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 02:02:27,607 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 02:02:27,614 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:02:27" (1/1) ... [2024-10-11 02:02:27,620 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:02:27" (1/1) ... [2024-10-11 02:02:27,633 INFO L138 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 52 [2024-10-11 02:02:27,634 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 02:02:27,634 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 02:02:27,635 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 02:02:27,635 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 02:02:27,643 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:02:27" (1/1) ... [2024-10-11 02:02:27,643 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:02:27" (1/1) ... [2024-10-11 02:02:27,644 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:02:27" (1/1) ... [2024-10-11 02:02:27,655 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-11 02:02:27,656 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:02:27" (1/1) ... [2024-10-11 02:02:27,656 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:02:27" (1/1) ... [2024-10-11 02:02:27,663 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:02:27" (1/1) ... [2024-10-11 02:02:27,667 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:02:27" (1/1) ... [2024-10-11 02:02:27,668 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:02:27" (1/1) ... [2024-10-11 02:02:27,669 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:02:27" (1/1) ... [2024-10-11 02:02:27,672 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 02:02:27,673 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 02:02:27,673 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 02:02:27,674 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 02:02:27,674 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:02:27" (1/1) ... [2024-10-11 02:02:27,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 02:02:27,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 02:02:27,703 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 02:02:27,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 02:02:27,792 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 02:02:27,792 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-10-11 02:02:27,792 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-10-11 02:02:27,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 02:02:27,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 02:02:27,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 02:02:27,793 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-11 02:02:27,793 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-11 02:02:27,848 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 02:02:27,850 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 02:02:27,977 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-10-11 02:02:27,978 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 02:02:28,002 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 02:02:28,002 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-11 02:02:28,002 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:02:28 BoogieIcfgContainer [2024-10-11 02:02:28,003 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 02:02:28,004 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 02:02:28,004 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 02:02:28,008 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 02:02:28,008 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:02:27" (1/3) ... [2024-10-11 02:02:28,013 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45fb2f62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:02:28, skipping insertion in model container [2024-10-11 02:02:28,013 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:02:27" (2/3) ... [2024-10-11 02:02:28,013 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45fb2f62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:02:28, skipping insertion in model container [2024-10-11 02:02:28,013 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:02:28" (3/3) ... [2024-10-11 02:02:28,015 INFO L112 eAbstractionObserver]: Analyzing ICFG bresenham-ll_valuebound100.c [2024-10-11 02:02:28,033 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 02:02:28,033 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-11 02:02:28,101 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 02:02:28,108 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;@2c0b51b9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 02:02:28,108 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-11 02:02:28,112 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 16 states have (on average 1.4375) internal successors, (23), 17 states have internal predecessors, (23), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-10-11 02:02:28,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-10-11 02:02:28,119 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 02:02:28,120 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 02:02:28,121 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 02:02:28,126 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 02:02:28,126 INFO L85 PathProgramCache]: Analyzing trace with hash 866122637, now seen corresponding path program 1 times [2024-10-11 02:02:28,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 02:02:28,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053300287] [2024-10-11 02:02:28,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 02:02:28,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 02:02:28,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:02:28,299 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-11 02:02:28,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:02:28,313 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 02:02:28,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:02:28,324 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 02:02:28,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 02:02:28,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053300287] [2024-10-11 02:02:28,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053300287] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 02:02:28,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 02:02:28,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 02:02:28,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537543940] [2024-10-11 02:02:28,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 02:02:28,335 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-11 02:02:28,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 02:02:28,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-11 02:02:28,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 02:02:28,364 INFO L87 Difference]: Start difference. First operand has 24 states, 16 states have (on average 1.4375) internal successors, (23), 17 states have internal predecessors, (23), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 02:02:28,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 02:02:28,394 INFO L93 Difference]: Finished difference Result 46 states and 63 transitions. [2024-10-11 02:02:28,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-11 02:02:28,397 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2024-10-11 02:02:28,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 02:02:28,403 INFO L225 Difference]: With dead ends: 46 [2024-10-11 02:02:28,403 INFO L226 Difference]: Without dead ends: 22 [2024-10-11 02:02:28,407 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 02:02:28,411 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 02:02:28,413 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 02:02:28,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-10-11 02:02:28,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2024-10-11 02:02:28,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-11 02:02:28,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2024-10-11 02:02:28,449 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 18 [2024-10-11 02:02:28,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 02:02:28,450 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2024-10-11 02:02:28,451 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 02:02:28,451 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2024-10-11 02:02:28,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-10-11 02:02:28,453 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 02:02:28,453 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 02:02:28,454 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 02:02:28,454 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 02:02:28,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 02:02:28,455 INFO L85 PathProgramCache]: Analyzing trace with hash 266317329, now seen corresponding path program 1 times [2024-10-11 02:02:28,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 02:02:28,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370761746] [2024-10-11 02:02:28,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 02:02:28,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 02:02:28,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 02:02:28,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [753034835] [2024-10-11 02:02:28,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 02:02:28,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 02:02:28,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 02:02:28,522 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 02:02:28,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 02:02:28,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:02:28,597 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-11 02:02:28,605 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 02:02:28,788 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 02:02:28,788 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 02:02:28,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 02:02:28,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370761746] [2024-10-11 02:02:28,790 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 02:02:28,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753034835] [2024-10-11 02:02:28,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [753034835] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 02:02:28,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 02:02:28,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 02:02:28,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557032429] [2024-10-11 02:02:28,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 02:02:28,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 02:02:28,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 02:02:28,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 02:02:28,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-11 02:02:28,796 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 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) [2024-10-11 02:02:28,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 02:02:28,908 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2024-10-11 02:02:28,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 02:02:28,910 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 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 18 [2024-10-11 02:02:28,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 02:02:28,911 INFO L225 Difference]: With dead ends: 34 [2024-10-11 02:02:28,911 INFO L226 Difference]: Without dead ends: 32 [2024-10-11 02:02:28,912 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-11 02:02:28,913 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 8 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 02:02:28,916 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 70 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 02:02:28,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-10-11 02:02:28,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 28. [2024-10-11 02:02:28,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 21 states have internal predecessors, (22), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-10-11 02:02:28,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2024-10-11 02:02:28,929 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 18 [2024-10-11 02:02:28,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 02:02:28,931 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2024-10-11 02:02:28,931 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 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) [2024-10-11 02:02:28,931 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2024-10-11 02:02:28,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-10-11 02:02:28,932 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 02:02:28,932 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 02:02:28,950 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-11 02:02:29,133 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 02:02:29,134 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 02:02:29,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 02:02:29,135 INFO L85 PathProgramCache]: Analyzing trace with hash -125875189, now seen corresponding path program 1 times [2024-10-11 02:02:29,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 02:02:29,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732367353] [2024-10-11 02:02:29,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 02:02:29,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 02:02:29,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:02:29,373 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-11 02:02:29,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:02:29,423 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 02:02:29,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:02:29,437 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-11 02:02:29,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:02:29,460 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 02:02:29,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 02:02:29,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732367353] [2024-10-11 02:02:29,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732367353] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 02:02:29,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658404135] [2024-10-11 02:02:29,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 02:02:29,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 02:02:29,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 02:02:29,467 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 02:02:29,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 02:02:29,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:02:29,526 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-11 02:02:29,528 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 02:02:29,685 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 02:02:29,686 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 02:02:29,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1658404135] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 02:02:29,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 02:02:29,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2024-10-11 02:02:29,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960733132] [2024-10-11 02:02:29,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 02:02:29,687 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 02:02:29,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 02:02:29,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 02:02:29,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-10-11 02:02:29,689 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-11 02:02:29,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 02:02:29,799 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2024-10-11 02:02:29,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 02:02:29,800 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25 [2024-10-11 02:02:29,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 02:02:29,801 INFO L225 Difference]: With dead ends: 38 [2024-10-11 02:02:29,802 INFO L226 Difference]: Without dead ends: 30 [2024-10-11 02:02:29,803 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-10-11 02:02:29,805 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 6 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 02:02:29,806 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 70 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 02:02:29,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-10-11 02:02:29,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2024-10-11 02:02:29,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-10-11 02:02:29,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2024-10-11 02:02:29,816 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 25 [2024-10-11 02:02:29,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 02:02:29,817 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2024-10-11 02:02:29,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-11 02:02:29,818 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2024-10-11 02:02:29,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-10-11 02:02:29,819 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 02:02:29,819 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 02:02:29,837 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-11 02:02:30,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 02:02:30,020 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 02:02:30,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 02:02:30,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1056709002, now seen corresponding path program 1 times [2024-10-11 02:02:30,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 02:02:30,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401351739] [2024-10-11 02:02:30,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 02:02:30,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 02:02:30,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 02:02:30,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1891128368] [2024-10-11 02:02:30,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 02:02:30,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 02:02:30,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 02:02:30,055 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 02:02:30,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 02:02:30,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:02:30,103 INFO L255 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-10-11 02:02:30,106 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 02:02:30,324 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 02:02:30,324 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 02:02:30,594 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 02:02:30,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 02:02:30,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401351739] [2024-10-11 02:02:30,594 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 02:02:30,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1891128368] [2024-10-11 02:02:30,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1891128368] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 02:02:30,595 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 02:02:30,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 17 [2024-10-11 02:02:30,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516666974] [2024-10-11 02:02:30,595 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 02:02:30,595 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-11 02:02:30,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 02:02:30,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-11 02:02:30,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2024-10-11 02:02:30,597 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand has 17 states, 13 states have (on average 2.076923076923077) internal successors, (27), 16 states have internal predecessors, (27), 5 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-10-11 02:02:30,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 02:02:30,884 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2024-10-11 02:02:30,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-11 02:02:30,885 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 13 states have (on average 2.076923076923077) internal successors, (27), 16 states have internal predecessors, (27), 5 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 27 [2024-10-11 02:02:30,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 02:02:30,886 INFO L225 Difference]: With dead ends: 44 [2024-10-11 02:02:30,887 INFO L226 Difference]: Without dead ends: 40 [2024-10-11 02:02:30,888 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2024-10-11 02:02:30,889 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 19 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 02:02:30,891 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 108 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 02:02:30,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-10-11 02:02:30,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 31. [2024-10-11 02:02:30,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 22 states have internal predecessors, (24), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-10-11 02:02:30,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2024-10-11 02:02:30,907 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 27 [2024-10-11 02:02:30,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 02:02:30,907 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2024-10-11 02:02:30,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 13 states have (on average 2.076923076923077) internal successors, (27), 16 states have internal predecessors, (27), 5 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-10-11 02:02:30,907 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2024-10-11 02:02:30,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-10-11 02:02:30,908 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 02:02:30,908 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 02:02:30,928 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-11 02:02:31,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 02:02:31,109 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 02:02:31,110 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 02:02:31,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1266497530, now seen corresponding path program 1 times [2024-10-11 02:02:31,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 02:02:31,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467284593] [2024-10-11 02:02:31,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 02:02:31,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 02:02:31,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:02:31,274 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-11 02:02:31,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:02:31,278 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 02:02:31,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:02:31,315 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-11 02:02:31,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:02:31,324 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-11 02:02:31,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:02:31,330 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-11 02:02:31,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 02:02:31,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467284593] [2024-10-11 02:02:31,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467284593] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 02:02:31,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066860633] [2024-10-11 02:02:31,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 02:02:31,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 02:02:31,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 02:02:31,335 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 02:02:31,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-11 02:02:31,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:02:31,392 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-10-11 02:02:31,394 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 02:02:31,777 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 02:02:31,777 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 02:02:32,477 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-11 02:02:32,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1066860633] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 02:02:32,479 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 02:02:32,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 15, 11] total 27 [2024-10-11 02:02:32,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942865264] [2024-10-11 02:02:32,479 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 02:02:32,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-10-11 02:02:32,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 02:02:32,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-10-11 02:02:32,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=603, Unknown=0, NotChecked=0, Total=702 [2024-10-11 02:02:32,482 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand has 27 states, 23 states have (on average 2.0869565217391304) internal successors, (48), 23 states have internal predecessors, (48), 10 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (11), 8 states have call predecessors, (11), 7 states have call successors, (11) [2024-10-11 02:02:34,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 02:02:34,600 INFO L93 Difference]: Finished difference Result 47 states and 55 transitions. [2024-10-11 02:02:34,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-10-11 02:02:34,600 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 23 states have (on average 2.0869565217391304) internal successors, (48), 23 states have internal predecessors, (48), 10 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (11), 8 states have call predecessors, (11), 7 states have call successors, (11) Word has length 34 [2024-10-11 02:02:34,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 02:02:34,601 INFO L225 Difference]: With dead ends: 47 [2024-10-11 02:02:34,601 INFO L226 Difference]: Without dead ends: 0 [2024-10-11 02:02:34,602 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 365 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=386, Invalid=1684, Unknown=0, NotChecked=0, Total=2070 [2024-10-11 02:02:34,603 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 51 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-11 02:02:34,603 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 106 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-11 02:02:34,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-10-11 02:02:34,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-10-11 02:02:34,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 02:02:34,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-10-11 02:02:34,604 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 34 [2024-10-11 02:02:34,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 02:02:34,605 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-11 02:02:34,605 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 23 states have (on average 2.0869565217391304) internal successors, (48), 23 states have internal predecessors, (48), 10 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (11), 8 states have call predecessors, (11), 7 states have call successors, (11) [2024-10-11 02:02:34,605 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-10-11 02:02:34,605 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-10-11 02:02:34,608 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-11 02:02:34,627 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-11 02:02:34,814 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 02:02:34,821 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-10-11 02:02:34,823 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-10-11 02:02:35,328 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-11 02:02:35,345 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-10-11 02:02:35,353 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:02:35 BoogieIcfgContainer [2024-10-11 02:02:35,353 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-11 02:02:35,354 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-11 02:02:35,354 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-11 02:02:35,354 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-11 02:02:35,355 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:02:28" (3/4) ... [2024-10-11 02:02:35,356 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-11 02:02:35,360 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2024-10-11 02:02:35,360 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-10-11 02:02:35,364 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2024-10-11 02:02:35,364 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-10-11 02:02:35,365 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-10-11 02:02:35,365 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-10-11 02:02:35,454 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-11 02:02:35,454 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-11 02:02:35,454 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-11 02:02:35,455 INFO L158 Benchmark]: Toolchain (without parser) took 8104.79ms. Allocated memory was 138.4MB in the beginning and 188.7MB in the end (delta: 50.3MB). Free memory was 83.1MB in the beginning and 58.9MB in the end (delta: 24.2MB). Peak memory consumption was 76.5MB. Max. memory is 16.1GB. [2024-10-11 02:02:35,455 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 138.4MB. Free memory is still 99.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-11 02:02:35,455 INFO L158 Benchmark]: CACSL2BoogieTranslator took 254.60ms. Allocated memory is still 138.4MB. Free memory was 83.1MB in the beginning and 70.5MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-11 02:02:35,456 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.00ms. Allocated memory is still 138.4MB. Free memory was 70.5MB in the beginning and 69.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-11 02:02:35,456 INFO L158 Benchmark]: Boogie Preprocessor took 38.18ms. Allocated memory is still 138.4MB. Free memory was 69.0MB in the beginning and 67.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-11 02:02:35,456 INFO L158 Benchmark]: RCFGBuilder took 329.48ms. Allocated memory is still 138.4MB. Free memory was 67.4MB in the beginning and 100.2MB in the end (delta: -32.8MB). Peak memory consumption was 5.2MB. Max. memory is 16.1GB. [2024-10-11 02:02:35,456 INFO L158 Benchmark]: TraceAbstraction took 7349.00ms. Allocated memory was 138.4MB in the beginning and 188.7MB in the end (delta: 50.3MB). Free memory was 99.5MB in the beginning and 63.1MB in the end (delta: 36.4MB). Peak memory consumption was 88.1MB. Max. memory is 16.1GB. [2024-10-11 02:02:35,457 INFO L158 Benchmark]: Witness Printer took 100.79ms. Allocated memory is still 188.7MB. Free memory was 63.1MB in the beginning and 58.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-11 02:02:35,458 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 138.4MB. Free memory is still 99.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 254.60ms. Allocated memory is still 138.4MB. Free memory was 83.1MB in the beginning and 70.5MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.00ms. Allocated memory is still 138.4MB. Free memory was 70.5MB in the beginning and 69.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.18ms. Allocated memory is still 138.4MB. Free memory was 69.0MB in the beginning and 67.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 329.48ms. Allocated memory is still 138.4MB. Free memory was 67.4MB in the beginning and 100.2MB in the end (delta: -32.8MB). Peak memory consumption was 5.2MB. Max. memory is 16.1GB. * TraceAbstraction took 7349.00ms. Allocated memory was 138.4MB in the beginning and 188.7MB in the end (delta: 50.3MB). Free memory was 99.5MB in the beginning and 63.1MB in the end (delta: 36.4MB). Peak memory consumption was 88.1MB. Max. memory is 16.1GB. * Witness Printer took 100.79ms. Allocated memory is still 188.7MB. Free memory was 63.1MB in the beginning and 58.9MB 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.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression * 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: 16]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 6.7s, OverallIterations: 5, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 85 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 84 mSDsluCounter, 379 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 302 mSDsCounter, 44 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 521 IncrementalHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 44 mSolverCounterUnsat, 77 mSDtfsCounter, 521 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 225 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 431 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=4, InterpolantAutomatonStates: 59, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 14 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 226 NumberOfCodeBlocks, 226 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 233 ConstructedInterpolants, 3 QuantifiedInterpolants, 1055 SizeOfPredicates, 13 NumberOfNonLiveVariables, 314 ConjunctsInSsa, 86 ConjunctsInUnsatCore, 9 InterpolantComputations, 3 PerfectInterpolantSequences, 62/81 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: 32]: Loop Invariant Derived loop invariant: (((((((((((__int128) X * y) * 2) + X) + v) == ((((__int128) Y * x) * 2) + ((long long) 2 * Y))) && (0 <= Y)) && ((((__int128) X * y) + y) == ((__int128) x * y))) && (X <= 100)) && (0 <= X)) || (((((((((__int128) X * y) * 2) + X) + v) == ((((__int128) Y * x) * 2) + ((long long) 2 * Y))) && (0 <= Y)) && (X <= 100)) && (0 <= X))) - ProcedureContractResult [Line: 10]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not. Ensures: (cond != 0) - ProcedureContractResult [Line: 13]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (1 <= cond) Ensures: (1 <= cond) RESULT: Ultimate proved your program to be correct! [2024-10-11 02:02:35,482 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/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