./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/prodbin-ll_valuebound2.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/prodbin-ll_valuebound2.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 d2bc2a3f53718ecf47344b6d9b2d76a5698712f748ff03cd831a90a334f72c9d --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 02:26:15,187 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 02:26:15,260 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-11 02:26:15,266 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 02:26:15,267 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 02:26:15,296 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 02:26:15,297 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 02:26:15,298 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 02:26:15,298 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 02:26:15,300 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 02:26:15,300 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 02:26:15,301 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 02:26:15,301 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 02:26:15,303 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 02:26:15,304 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 02:26:15,304 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 02:26:15,304 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 02:26:15,305 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 02:26:15,305 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 02:26:15,305 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 02:26:15,305 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 02:26:15,309 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 02:26:15,309 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 02:26:15,310 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 02:26:15,310 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 02:26:15,310 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 02:26:15,311 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 02:26:15,311 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 02:26:15,311 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 02:26:15,312 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 02:26:15,312 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 02:26:15,312 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 02:26:15,312 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 02:26:15,313 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 02:26:15,313 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 02:26:15,313 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 02:26:15,313 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 02:26:15,314 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 02:26:15,314 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 02:26:15,314 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 02:26:15,314 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 02:26:15,316 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 02:26:15,316 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d2bc2a3f53718ecf47344b6d9b2d76a5698712f748ff03cd831a90a334f72c9d [2024-10-11 02:26:15,622 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 02:26:15,649 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 02:26:15,652 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 02:26:15,653 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 02:26:15,654 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 02:26:15,655 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound2.c [2024-10-11 02:26:17,145 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 02:26:17,325 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 02:26:17,325 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound2.c [2024-10-11 02:26:17,336 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/de9a9d993/2ad0ff17a8c64adaaf2adaf535c1b247/FLAG79bcba89b [2024-10-11 02:26:17,349 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/de9a9d993/2ad0ff17a8c64adaaf2adaf535c1b247 [2024-10-11 02:26:17,352 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 02:26:17,353 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 02:26:17,354 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 02:26:17,355 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 02:26:17,363 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 02:26:17,364 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:26:17" (1/1) ... [2024-10-11 02:26:17,366 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e1af7d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:17, skipping insertion in model container [2024-10-11 02:26:17,367 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:26:17" (1/1) ... [2024-10-11 02:26:17,389 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 02:26:17,560 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/prodbin-ll_valuebound2.c[537,550] [2024-10-11 02:26:17,581 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 02:26:17,591 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 02:26:17,603 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/prodbin-ll_valuebound2.c[537,550] [2024-10-11 02:26:17,608 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 02:26:17,622 INFO L204 MainTranslator]: Completed translation [2024-10-11 02:26:17,622 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:17 WrapperNode [2024-10-11 02:26:17,622 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 02:26:17,623 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 02:26:17,624 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 02:26:17,624 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 02:26:17,629 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:17" (1/1) ... [2024-10-11 02:26:17,634 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:17" (1/1) ... [2024-10-11 02:26:17,651 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 43 [2024-10-11 02:26:17,652 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 02:26:17,652 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 02:26:17,652 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 02:26:17,652 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 02:26:17,661 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:17" (1/1) ... [2024-10-11 02:26:17,662 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:17" (1/1) ... [2024-10-11 02:26:17,663 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:17" (1/1) ... [2024-10-11 02:26:17,674 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 02:26:17,675 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:17" (1/1) ... [2024-10-11 02:26:17,675 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:17" (1/1) ... [2024-10-11 02:26:17,678 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:17" (1/1) ... [2024-10-11 02:26:17,684 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:17" (1/1) ... [2024-10-11 02:26:17,685 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:17" (1/1) ... [2024-10-11 02:26:17,686 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:17" (1/1) ... [2024-10-11 02:26:17,688 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 02:26:17,689 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 02:26:17,689 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 02:26:17,689 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 02:26:17,694 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:17" (1/1) ... [2024-10-11 02:26:17,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 02:26:17,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 02:26:17,737 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 02:26:17,739 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 02:26:17,788 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 02:26:17,788 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-10-11 02:26:17,789 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-10-11 02:26:17,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 02:26:17,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 02:26:17,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 02:26:17,790 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-11 02:26:17,791 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-11 02:26:17,866 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 02:26:17,868 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 02:26:18,136 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-10-11 02:26:18,136 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 02:26:18,162 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 02:26:18,162 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-11 02:26:18,162 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:26:18 BoogieIcfgContainer [2024-10-11 02:26:18,162 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 02:26:18,167 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 02:26:18,167 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 02:26:18,170 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 02:26:18,170 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:26:17" (1/3) ... [2024-10-11 02:26:18,170 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50479fc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:26:18, skipping insertion in model container [2024-10-11 02:26:18,171 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:17" (2/3) ... [2024-10-11 02:26:18,171 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50479fc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:26:18, skipping insertion in model container [2024-10-11 02:26:18,171 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:26:18" (3/3) ... [2024-10-11 02:26:18,172 INFO L112 eAbstractionObserver]: Analyzing ICFG prodbin-ll_valuebound2.c [2024-10-11 02:26:18,185 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 02:26:18,186 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-11 02:26:18,238 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 02:26:18,246 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;@28185008, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 02:26:18,246 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-11 02:26:18,253 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 16 states have internal predecessors, (22), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-10-11 02:26:18,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-10-11 02:26:18,263 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 02:26:18,264 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 02:26:18,265 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 02:26:18,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 02:26:18,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1698673820, now seen corresponding path program 1 times [2024-10-11 02:26:18,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 02:26:18,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952108458] [2024-10-11 02:26:18,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 02:26:18,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 02:26:18,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:26:18,448 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-11 02:26:18,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:26:18,459 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 02:26:18,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:26:18,470 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-11 02:26:18,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:26:18,476 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-11 02:26:18,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 02:26:18,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952108458] [2024-10-11 02:26:18,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952108458] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 02:26:18,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 02:26:18,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 02:26:18,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271260165] [2024-10-11 02:26:18,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 02:26:18,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-11 02:26:18,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 02:26:18,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-11 02:26:18,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 02:26:18,507 INFO L87 Difference]: Start difference. First operand has 24 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 16 states have internal predecessors, (22), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) 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, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-11 02:26:18,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 02:26:18,530 INFO L93 Difference]: Finished difference Result 46 states and 66 transitions. [2024-10-11 02:26:18,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-11 02:26:18,533 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, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2024-10-11 02:26:18,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 02:26:18,539 INFO L225 Difference]: With dead ends: 46 [2024-10-11 02:26:18,539 INFO L226 Difference]: Without dead ends: 22 [2024-10-11 02:26:18,542 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 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 02:26:18,545 INFO L432 NwaCegarLoop]: 26 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, 26 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 02:26:18,546 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 02:26:18,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-10-11 02:26:18,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2024-10-11 02:26:18,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-10-11 02:26:18,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2024-10-11 02:26:18,581 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 23 [2024-10-11 02:26:18,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 02:26:18,583 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2024-10-11 02:26:18,584 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, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-11 02:26:18,584 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2024-10-11 02:26:18,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-10-11 02:26:18,586 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 02:26:18,587 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 02:26:18,587 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 02:26:18,588 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 02:26:18,588 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 02:26:18,589 INFO L85 PathProgramCache]: Analyzing trace with hash 549966490, now seen corresponding path program 1 times [2024-10-11 02:26:18,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 02:26:18,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013445771] [2024-10-11 02:26:18,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 02:26:18,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 02:26:18,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 02:26:18,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2092536319] [2024-10-11 02:26:18,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 02:26:18,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 02:26:18,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 02:26:18,637 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 02:26:18,638 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 02:26:18,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:26:18,703 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-11 02:26:18,709 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 02:26:18,991 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-11 02:26:18,991 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 02:26:19,107 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-11 02:26:19,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 02:26:19,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013445771] [2024-10-11 02:26:19,108 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 02:26:19,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092536319] [2024-10-11 02:26:19,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092536319] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 02:26:19,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 02:26:19,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 10 [2024-10-11 02:26:19,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796827453] [2024-10-11 02:26:19,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 02:26:19,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 02:26:19,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 02:26:19,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 02:26:19,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-10-11 02:26:19,115 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-10-11 02:26:19,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 02:26:19,222 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2024-10-11 02:26:19,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 02:26:19,222 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 23 [2024-10-11 02:26:19,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 02:26:19,224 INFO L225 Difference]: With dead ends: 33 [2024-10-11 02:26:19,224 INFO L226 Difference]: Without dead ends: 31 [2024-10-11 02:26:19,224 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-10-11 02:26:19,226 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 5 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 02:26:19,226 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 65 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 02:26:19,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-10-11 02:26:19,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 28. [2024-10-11 02:26:19,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 20 states have internal predecessors, (21), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-10-11 02:26:19,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2024-10-11 02:26:19,239 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 23 [2024-10-11 02:26:19,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 02:26:19,241 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2024-10-11 02:26:19,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-10-11 02:26:19,242 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2024-10-11 02:26:19,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-10-11 02:26:19,243 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 02:26:19,244 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 02:26:19,263 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-11 02:26:19,445 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 02:26:19,446 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 02:26:19,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 02:26:19,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1559575677, now seen corresponding path program 1 times [2024-10-11 02:26:19,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 02:26:19,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066865417] [2024-10-11 02:26:19,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 02:26:19,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 02:26:19,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:26:19,731 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-11 02:26:19,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:26:19,736 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 02:26:19,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:26:19,740 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-11 02:26:19,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:26:19,770 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-11 02:26:19,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:26:19,779 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-11 02:26:19,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 02:26:19,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066865417] [2024-10-11 02:26:19,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066865417] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 02:26:19,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 02:26:19,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 02:26:19,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478005486] [2024-10-11 02:26:19,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 02:26:19,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 02:26:19,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 02:26:19,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 02:26:19,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 02:26:19,783 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-11 02:26:19,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 02:26:19,846 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2024-10-11 02:26:19,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 02:26:19,847 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 29 [2024-10-11 02:26:19,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 02:26:19,848 INFO L225 Difference]: With dead ends: 38 [2024-10-11 02:26:19,848 INFO L226 Difference]: Without dead ends: 31 [2024-10-11 02:26:19,849 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 02:26:19,850 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 11 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 02:26:19,851 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 55 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 02:26:19,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-10-11 02:26:19,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2024-10-11 02:26:19,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 20 states have internal predecessors, (22), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-10-11 02:26:19,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2024-10-11 02:26:19,859 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 29 [2024-10-11 02:26:19,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 02:26:19,859 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2024-10-11 02:26:19,859 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-11 02:26:19,860 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2024-10-11 02:26:19,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-10-11 02:26:19,861 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 02:26:19,861 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 02:26:19,861 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 02:26:19,862 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 02:26:19,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 02:26:19,862 INFO L85 PathProgramCache]: Analyzing trace with hash 191228685, now seen corresponding path program 1 times [2024-10-11 02:26:19,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 02:26:19,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469715444] [2024-10-11 02:26:19,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 02:26:19,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 02:26:19,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 02:26:19,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2131439261] [2024-10-11 02:26:19,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 02:26:19,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 02:26:19,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 02:26:19,901 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 02:26:19,902 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 02:26:19,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:26:19,969 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-11 02:26:19,972 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 02:26:21,237 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-11 02:26:21,238 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 02:26:23,816 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-11 02:26:23,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 02:26:23,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469715444] [2024-10-11 02:26:23,817 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 02:26:23,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131439261] [2024-10-11 02:26:23,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2131439261] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 02:26:23,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 02:26:23,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 11 [2024-10-11 02:26:23,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965795215] [2024-10-11 02:26:23,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 02:26:23,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 02:26:23,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 02:26:23,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 02:26:23,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-10-11 02:26:23,823 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-11 02:26:24,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 02:26:24,061 INFO L93 Difference]: Finished difference Result 41 states and 47 transitions. [2024-10-11 02:26:24,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 02:26:24,063 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 32 [2024-10-11 02:26:24,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 02:26:24,064 INFO L225 Difference]: With dead ends: 41 [2024-10-11 02:26:24,064 INFO L226 Difference]: Without dead ends: 39 [2024-10-11 02:26:24,065 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 51 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-10-11 02:26:24,065 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 6 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 02:26:24,066 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 80 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 02:26:24,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-10-11 02:26:24,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2024-10-11 02:26:24,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 27 states have internal predecessors, (31), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-10-11 02:26:24,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2024-10-11 02:26:24,078 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 32 [2024-10-11 02:26:24,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 02:26:24,079 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2024-10-11 02:26:24,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-11 02:26:24,079 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2024-10-11 02:26:24,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-10-11 02:26:24,080 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 02:26:24,080 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 02:26:24,097 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 02:26:24,280 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 02:26:24,281 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 02:26:24,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 02:26:24,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1966236047, now seen corresponding path program 1 times [2024-10-11 02:26:24,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 02:26:24,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949827157] [2024-10-11 02:26:24,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 02:26:24,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 02:26:24,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 02:26:24,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1130680446] [2024-10-11 02:26:24,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 02:26:24,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 02:26:24,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 02:26:24,321 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 02:26:24,322 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 02:26:24,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:26:24,367 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-11 02:26:24,369 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 02:26:24,681 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-11 02:26:24,681 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 02:26:25,117 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-11 02:26:25,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 02:26:25,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949827157] [2024-10-11 02:26:25,118 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 02:26:25,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1130680446] [2024-10-11 02:26:25,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1130680446] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 02:26:25,118 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 02:26:25,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 16 [2024-10-11 02:26:25,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014723337] [2024-10-11 02:26:25,119 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 02:26:25,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-11 02:26:25,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 02:26:25,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-11 02:26:25,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2024-10-11 02:26:25,121 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand has 16 states, 16 states have (on average 1.8125) internal successors, (29), 13 states have internal predecessors, (29), 6 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) [2024-10-11 02:26:25,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 02:26:25,755 INFO L93 Difference]: Finished difference Result 66 states and 81 transitions. [2024-10-11 02:26:25,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-11 02:26:25,756 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 13 states have internal predecessors, (29), 6 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) Word has length 32 [2024-10-11 02:26:25,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 02:26:25,757 INFO L225 Difference]: With dead ends: 66 [2024-10-11 02:26:25,757 INFO L226 Difference]: Without dead ends: 59 [2024-10-11 02:26:25,758 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=110, Invalid=352, Unknown=0, NotChecked=0, Total=462 [2024-10-11 02:26:25,758 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 35 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 02:26:25,759 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 122 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 02:26:25,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-10-11 02:26:25,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2024-10-11 02:26:25,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 42 states have (on average 1.2619047619047619) internal successors, (53), 43 states have internal predecessors, (53), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-10-11 02:26:25,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 72 transitions. [2024-10-11 02:26:25,769 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 72 transitions. Word has length 32 [2024-10-11 02:26:25,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 02:26:25,770 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 72 transitions. [2024-10-11 02:26:25,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 13 states have internal predecessors, (29), 6 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) [2024-10-11 02:26:25,770 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 72 transitions. [2024-10-11 02:26:25,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-10-11 02:26:25,771 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 02:26:25,771 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 02:26:25,788 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 02:26:25,975 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 02:26:25,976 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 02:26:25,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 02:26:25,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1307708752, now seen corresponding path program 1 times [2024-10-11 02:26:25,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 02:26:25,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064946188] [2024-10-11 02:26:25,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 02:26:25,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 02:26:26,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 02:26:26,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [629555179] [2024-10-11 02:26:26,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 02:26:26,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 02:26:26,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 02:26:26,015 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 02:26:26,016 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 02:26:26,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:26:26,060 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-11 02:26:26,062 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 02:26:26,123 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-11 02:26:26,125 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 02:26:26,222 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-11 02:26:26,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 02:26:26,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064946188] [2024-10-11 02:26:26,224 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 02:26:26,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [629555179] [2024-10-11 02:26:26,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [629555179] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 02:26:26,224 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 02:26:26,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2024-10-11 02:26:26,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445139423] [2024-10-11 02:26:26,225 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 02:26:26,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 02:26:26,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 02:26:26,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 02:26:26,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-10-11 02:26:26,228 INFO L87 Difference]: Start difference. First operand 58 states and 72 transitions. Second operand has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 7 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2024-10-11 02:26:26,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 02:26:26,308 INFO L93 Difference]: Finished difference Result 66 states and 79 transitions. [2024-10-11 02:26:26,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 02:26:26,308 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 7 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) Word has length 38 [2024-10-11 02:26:26,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 02:26:26,312 INFO L225 Difference]: With dead ends: 66 [2024-10-11 02:26:26,312 INFO L226 Difference]: Without dead ends: 59 [2024-10-11 02:26:26,313 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 64 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-10-11 02:26:26,313 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 10 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 02:26:26,313 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 115 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 02:26:26,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-10-11 02:26:26,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 57. [2024-10-11 02:26:26,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 42 states have (on average 1.1666666666666667) internal successors, (49), 42 states have internal predecessors, (49), 9 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-10-11 02:26:26,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 67 transitions. [2024-10-11 02:26:26,327 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 67 transitions. Word has length 38 [2024-10-11 02:26:26,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 02:26:26,327 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 67 transitions. [2024-10-11 02:26:26,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 7 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2024-10-11 02:26:26,328 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 67 transitions. [2024-10-11 02:26:26,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-10-11 02:26:26,329 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 02:26:26,329 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 02:26:26,346 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-11 02:26:26,533 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-10-11 02:26:26,534 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 02:26:26,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 02:26:26,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1005394556, now seen corresponding path program 1 times [2024-10-11 02:26:26,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 02:26:26,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194919546] [2024-10-11 02:26:26,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 02:26:26,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 02:26:26,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:26:26,854 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-11 02:26:26,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:26:26,858 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 02:26:26,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:26:26,884 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-11 02:26:26,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:26:26,892 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-11 02:26:26,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:26:26,898 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-11 02:26:26,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:26:26,904 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 16 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-11 02:26:26,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 02:26:26,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194919546] [2024-10-11 02:26:26,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194919546] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 02:26:26,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164555183] [2024-10-11 02:26:26,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 02:26:26,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 02:26:26,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 02:26:26,908 INFO L229 MonitoredProcess]: Starting monitored process 6 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 02:26:26,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-11 02:26:26,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:26:26,952 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-11 02:26:26,954 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 02:26:27,042 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 16 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-11 02:26:27,043 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 02:26:27,250 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 16 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-11 02:26:27,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [164555183] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 02:26:27,250 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 02:26:27,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 12 [2024-10-11 02:26:27,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146639366] [2024-10-11 02:26:27,251 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 02:26:27,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-11 02:26:27,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 02:26:27,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-11 02:26:27,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-10-11 02:26:27,253 INFO L87 Difference]: Start difference. First operand 57 states and 67 transitions. Second operand has 12 states, 12 states have (on average 2.75) internal successors, (33), 10 states have internal predecessors, (33), 7 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-10-11 02:26:27,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 02:26:27,365 INFO L93 Difference]: Finished difference Result 93 states and 107 transitions. [2024-10-11 02:26:27,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 02:26:27,366 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.75) internal successors, (33), 10 states have internal predecessors, (33), 7 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) Word has length 41 [2024-10-11 02:26:27,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 02:26:27,366 INFO L225 Difference]: With dead ends: 93 [2024-10-11 02:26:27,366 INFO L226 Difference]: Without dead ends: 51 [2024-10-11 02:26:27,367 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 82 SyntacticMatches, 5 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2024-10-11 02:26:27,368 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 9 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 02:26:27,368 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 108 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 02:26:27,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-10-11 02:26:27,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2024-10-11 02:26:27,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 37 states have (on average 1.054054054054054) internal successors, (39), 38 states have internal predecessors, (39), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-10-11 02:26:27,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 56 transitions. [2024-10-11 02:26:27,383 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 56 transitions. Word has length 41 [2024-10-11 02:26:27,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 02:26:27,383 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 56 transitions. [2024-10-11 02:26:27,383 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.75) internal successors, (33), 10 states have internal predecessors, (33), 7 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-10-11 02:26:27,383 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 56 transitions. [2024-10-11 02:26:27,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-10-11 02:26:27,387 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 02:26:27,388 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 02:26:27,406 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-11 02:26:27,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 02:26:27,589 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 02:26:27,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 02:26:27,590 INFO L85 PathProgramCache]: Analyzing trace with hash -960744998, now seen corresponding path program 2 times [2024-10-11 02:26:27,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 02:26:27,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218887479] [2024-10-11 02:26:27,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 02:26:27,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 02:26:27,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:26:28,004 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-11 02:26:28,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:26:28,007 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 02:26:28,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:26:28,033 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-11 02:26:28,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:26:28,037 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-11 02:26:28,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:26:28,040 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-11 02:26:28,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:26:28,051 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-11 02:26:28,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:26:28,054 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-11 02:26:28,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:26:28,057 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 40 proven. 8 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-10-11 02:26:28,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 02:26:28,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218887479] [2024-10-11 02:26:28,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218887479] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 02:26:28,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131873661] [2024-10-11 02:26:28,057 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 02:26:28,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 02:26:28,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 02:26:28,059 INFO L229 MonitoredProcess]: Starting monitored process 7 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 02:26:28,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-11 02:26:28,147 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 02:26:28,148 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 02:26:28,149 INFO L255 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-11 02:26:28,151 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 02:26:28,250 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 50 proven. 3 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-10-11 02:26:28,250 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 02:26:28,602 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 38 proven. 3 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-10-11 02:26:28,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2131873661] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 02:26:28,602 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 02:26:28,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2024-10-11 02:26:28,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425568236] [2024-10-11 02:26:28,603 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 02:26:28,603 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-11 02:26:28,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 02:26:28,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-11 02:26:28,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2024-10-11 02:26:28,606 INFO L87 Difference]: Start difference. First operand 51 states and 56 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 16 states have internal predecessors, (47), 10 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (13), 10 states have call predecessors, (13), 10 states have call successors, (13) [2024-10-11 02:26:28,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 02:26:28,751 INFO L93 Difference]: Finished difference Result 55 states and 59 transitions. [2024-10-11 02:26:28,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 02:26:28,752 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 16 states have internal predecessors, (47), 10 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (13), 10 states have call predecessors, (13), 10 states have call successors, (13) Word has length 59 [2024-10-11 02:26:28,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 02:26:28,753 INFO L225 Difference]: With dead ends: 55 [2024-10-11 02:26:28,753 INFO L226 Difference]: Without dead ends: 0 [2024-10-11 02:26:28,753 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 122 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=109, Invalid=353, Unknown=0, NotChecked=0, Total=462 [2024-10-11 02:26:28,754 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 5 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 02:26:28,754 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 116 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 02:26:28,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-10-11 02:26:28,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-10-11 02:26:28,755 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 02:26:28,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-10-11 02:26:28,756 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 59 [2024-10-11 02:26:28,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 02:26:28,756 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-11 02:26:28,756 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 16 states have internal predecessors, (47), 10 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (13), 10 states have call predecessors, (13), 10 states have call successors, (13) [2024-10-11 02:26:28,757 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-10-11 02:26:28,757 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-10-11 02:26:28,759 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-11 02:26:28,771 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-11 02:26:28,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-10-11 02:26:28,967 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1] [2024-10-11 02:26:28,970 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-10-11 02:26:29,321 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-11 02:26:29,347 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:26:29 BoogieIcfgContainer [2024-10-11 02:26:29,347 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-11 02:26:29,348 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-11 02:26:29,348 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-11 02:26:29,348 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-11 02:26:29,348 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:26:18" (3/4) ... [2024-10-11 02:26:29,350 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-11 02:26:29,353 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2024-10-11 02:26:29,354 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-10-11 02:26:29,358 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2024-10-11 02:26:29,358 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-10-11 02:26:29,358 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-10-11 02:26:29,358 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-10-11 02:26:29,453 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-11 02:26:29,453 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-11 02:26:29,453 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-11 02:26:29,454 INFO L158 Benchmark]: Toolchain (without parser) took 12100.87ms. Allocated memory was 151.0MB in the beginning and 222.3MB in the end (delta: 71.3MB). Free memory was 114.2MB in the beginning and 147.5MB in the end (delta: -33.3MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2024-10-11 02:26:29,454 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 151.0MB. Free memory is still 116.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-11 02:26:29,454 INFO L158 Benchmark]: CACSL2BoogieTranslator took 268.35ms. Allocated memory is still 151.0MB. Free memory was 114.2MB in the beginning and 101.9MB in the end (delta: 12.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-11 02:26:29,454 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.14ms. Allocated memory is still 151.0MB. Free memory was 101.9MB in the beginning and 100.3MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-11 02:26:29,454 INFO L158 Benchmark]: Boogie Preprocessor took 35.63ms. Allocated memory is still 151.0MB. Free memory was 100.3MB in the beginning and 98.7MB in the end (delta: 1.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-11 02:26:29,455 INFO L158 Benchmark]: RCFGBuilder took 473.98ms. Allocated memory is still 151.0MB. Free memory was 98.7MB in the beginning and 118.6MB in the end (delta: -19.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-11 02:26:29,455 INFO L158 Benchmark]: TraceAbstraction took 11180.65ms. Allocated memory was 151.0MB in the beginning and 222.3MB in the end (delta: 71.3MB). Free memory was 117.9MB in the beginning and 152.8MB in the end (delta: -34.9MB). Peak memory consumption was 37.8MB. Max. memory is 16.1GB. [2024-10-11 02:26:29,455 INFO L158 Benchmark]: Witness Printer took 105.61ms. Allocated memory is still 222.3MB. Free memory was 152.8MB in the beginning and 147.5MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-10-11 02:26:29,456 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 151.0MB. Free memory is still 116.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 268.35ms. Allocated memory is still 151.0MB. Free memory was 114.2MB in the beginning and 101.9MB in the end (delta: 12.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.14ms. Allocated memory is still 151.0MB. Free memory was 101.9MB in the beginning and 100.3MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 35.63ms. Allocated memory is still 151.0MB. Free memory was 100.3MB in the beginning and 98.7MB in the end (delta: 1.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 473.98ms. Allocated memory is still 151.0MB. Free memory was 98.7MB in the beginning and 118.6MB in the end (delta: -19.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 11180.65ms. Allocated memory was 151.0MB in the beginning and 222.3MB in the end (delta: 71.3MB). Free memory was 117.9MB in the beginning and 152.8MB in the end (delta: -34.9MB). Peak memory consumption was 37.8MB. Max. memory is 16.1GB. * Witness Printer took 105.61ms. Allocated memory is still 222.3MB. Free memory was 152.8MB in the beginning and 147.5MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. 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: 15]: 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: 10.7s, OverallIterations: 8, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 86 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 81 mSDsluCounter, 687 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 545 mSDsCounter, 22 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 581 IncrementalHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 22 mSolverCounterUnsat, 142 mSDtfsCounter, 581 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 519 GetRequests, 419 SyntacticMatches, 14 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 3.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred in iteration=5, InterpolantAutomatonStates: 61, 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, 8 MinimizatonAttempts, 9 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 7.1s InterpolantComputationTime, 502 NumberOfCodeBlocks, 502 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 586 ConstructedInterpolants, 1 QuantifiedInterpolants, 2311 SizeOfPredicates, 11 NumberOfNonLiveVariables, 578 ConjunctsInSsa, 99 ConjunctsInUnsatCore, 16 InterpolantComputations, 4 PerfectInterpolantSequences, 456/493 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: 34]: Loop Invariant Derived loop invariant: (((((((((a <= 2) && (b == y)) && (b <= 2)) && (1 <= b)) && (z == 0)) && (0 <= a)) && (a == x)) || (((((((a <= 2) && (y == 1)) && (x == ((long long) 2 * a))) && (z == 0)) && (1 == ((b >= 0) ? (b / 2) : ((b / 2) - 1)))) && (0 <= a)) && (((b >= 0) ? (b % 2) : ((b % 2) + 2)) != 1))) || (((((((a <= 2) && (y != 1)) && (b <= 2)) && (1 <= b)) && ((z + ((__int128) x * y)) == ((long long) a * b))) && (0 == ((y >= 0) ? (y / 2) : ((y / 2) - 1)))) && (0 <= a))) - ProcedureContractResult [Line: 9]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not. Ensures: (cond != 0) - ProcedureContractResult [Line: 12]: 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 02:26:29,481 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