./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-numeric/TwoWay.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c22a74c-5e81-400c-9ae1-888887a3a5a5/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c22a74c-5e81-400c-9ae1-888887a3a5a5/bin/utaipan-verify-DbMuA5NWw2/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c22a74c-5e81-400c-9ae1-888887a3a5a5/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c22a74c-5e81-400c-9ae1-888887a3a5a5/bin/utaipan-verify-DbMuA5NWw2/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-numeric/TwoWay.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c22a74c-5e81-400c-9ae1-888887a3a5a5/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c22a74c-5e81-400c-9ae1-888887a3a5a5/bin/utaipan-verify-DbMuA5NWw2 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 6e96af222dc7427442f09a30ad05a811063c14ee1b704442df6b3bb77339a035 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 11:23:53,034 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 11:23:53,138 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c22a74c-5e81-400c-9ae1-888887a3a5a5/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Overflow-64bit-Taipan_Default.epf [2024-11-02 11:23:53,144 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 11:23:53,147 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 11:23:53,191 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 11:23:53,192 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 11:23:53,194 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 11:23:53,196 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 11:23:53,197 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 11:23:53,198 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 11:23:53,198 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 11:23:53,199 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 11:23:53,202 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 11:23:53,203 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 11:23:53,203 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 11:23:53,203 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 11:23:53,204 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 11:23:53,204 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 11:23:53,205 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 11:23:53,205 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 11:23:53,206 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 11:23:53,206 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 11:23:53,207 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 11:23:53,207 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 11:23:53,208 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 11:23:53,208 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 11:23:53,209 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 11:23:53,209 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 11:23:53,209 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 11:23:53,210 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-02 11:23:53,210 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-02 11:23:53,211 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 11:23:53,211 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 11:23:53,212 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 11:23:53,212 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 11:23:53,212 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 11:23:53,213 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 11:23:53,213 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 11:23:53,214 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 11:23:53,214 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 11:23:53,215 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 11:23:53,215 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 11:23:53,216 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 11:23:53,216 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 11:23:53,216 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 11:23:53,217 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c22a74c-5e81-400c-9ae1-888887a3a5a5/bin/utaipan-verify-DbMuA5NWw2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c22a74c-5e81-400c-9ae1-888887a3a5a5/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6e96af222dc7427442f09a30ad05a811063c14ee1b704442df6b3bb77339a035 [2024-11-02 11:23:53,524 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 11:23:53,559 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 11:23:53,562 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 11:23:53,564 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 11:23:53,565 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 11:23:53,567 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c22a74c-5e81-400c-9ae1-888887a3a5a5/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/termination-numeric/TwoWay.c Unable to find full path for "g++" [2024-11-02 11:23:55,811 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 11:23:56,024 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 11:23:56,025 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c22a74c-5e81-400c-9ae1-888887a3a5a5/sv-benchmarks/c/termination-numeric/TwoWay.c [2024-11-02 11:23:56,035 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c22a74c-5e81-400c-9ae1-888887a3a5a5/bin/utaipan-verify-DbMuA5NWw2/data/c77d2266f/3104a3d4d7fe419eb621ffc796ebbbc8/FLAGda8f6acb4 [2024-11-02 11:23:56,052 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c22a74c-5e81-400c-9ae1-888887a3a5a5/bin/utaipan-verify-DbMuA5NWw2/data/c77d2266f/3104a3d4d7fe419eb621ffc796ebbbc8 [2024-11-02 11:23:56,057 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 11:23:56,058 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 11:23:56,059 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 11:23:56,060 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 11:23:56,065 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 11:23:56,066 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:23:56" (1/1) ... [2024-11-02 11:23:56,067 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2647c528 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:23:56, skipping insertion in model container [2024-11-02 11:23:56,067 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:23:56" (1/1) ... [2024-11-02 11:23:56,090 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 11:23:56,314 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 11:23:56,320 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 11:23:56,336 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 11:23:56,355 INFO L204 MainTranslator]: Completed translation [2024-11-02 11:23:56,355 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:23:56 WrapperNode [2024-11-02 11:23:56,356 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 11:23:56,357 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 11:23:56,357 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 11:23:56,357 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 11:23:56,365 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:23:56" (1/1) ... [2024-11-02 11:23:56,370 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:23:56" (1/1) ... [2024-11-02 11:23:56,389 INFO L138 Inliner]: procedures = 5, calls = 4, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 23 [2024-11-02 11:23:56,390 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 11:23:56,391 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 11:23:56,391 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 11:23:56,391 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 11:23:56,400 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:23:56" (1/1) ... [2024-11-02 11:23:56,400 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:23:56" (1/1) ... [2024-11-02 11:23:56,401 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:23:56" (1/1) ... [2024-11-02 11:23:56,402 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:23:56" (1/1) ... [2024-11-02 11:23:56,404 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:23:56" (1/1) ... [2024-11-02 11:23:56,407 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:23:56" (1/1) ... [2024-11-02 11:23:56,411 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:23:56" (1/1) ... [2024-11-02 11:23:56,412 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:23:56" (1/1) ... [2024-11-02 11:23:56,413 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 11:23:56,414 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 11:23:56,414 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 11:23:56,415 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 11:23:56,417 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:23:56" (1/1) ... [2024-11-02 11:23:56,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 11:23:56,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c22a74c-5e81-400c-9ae1-888887a3a5a5/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 11:23:56,449 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c22a74c-5e81-400c-9ae1-888887a3a5a5/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 11:23:56,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c22a74c-5e81-400c-9ae1-888887a3a5a5/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 11:23:56,486 INFO L130 BoogieDeclarations]: Found specification of procedure twoWay [2024-11-02 11:23:56,486 INFO L138 BoogieDeclarations]: Found implementation of procedure twoWay [2024-11-02 11:23:56,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 11:23:56,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 11:23:56,560 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 11:23:56,562 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 11:23:56,763 INFO L? ?]: Removed 19 outVars from TransFormulas that were not future-live. [2024-11-02 11:23:56,764 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 11:23:56,795 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 11:23:56,796 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-02 11:23:56,796 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:23:56 BoogieIcfgContainer [2024-11-02 11:23:56,797 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 11:23:56,800 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 11:23:56,800 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 11:23:56,805 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 11:23:56,805 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 11:23:56" (1/3) ... [2024-11-02 11:23:56,807 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ed63c92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 11:23:56, skipping insertion in model container [2024-11-02 11:23:56,807 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:23:56" (2/3) ... [2024-11-02 11:23:56,808 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ed63c92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 11:23:56, skipping insertion in model container [2024-11-02 11:23:56,808 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:23:56" (3/3) ... [2024-11-02 11:23:56,811 INFO L112 eAbstractionObserver]: Analyzing ICFG TwoWay.c [2024-11-02 11:23:56,832 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 11:23:56,832 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-11-02 11:23:56,912 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 11:23:56,921 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=FINITE_AUTOMATA, 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;@6d51854a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 11:23:56,922 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-02 11:23:56,927 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 16 states have (on average 1.625) internal successors, (26), 22 states have internal predecessors, (26), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-02 11:23:56,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-02 11:23:56,936 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:23:56,937 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 11:23:56,938 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-02 11:23:56,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:23:56,944 INFO L85 PathProgramCache]: Analyzing trace with hash 596307167, now seen corresponding path program 1 times [2024-11-02 11:23:56,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 11:23:56,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990384272] [2024-11-02 11:23:56,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:23:56,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 11:23:57,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:23:57,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 11:23:57,296 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 11:23:57,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990384272] [2024-11-02 11:23:57,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990384272] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 11:23:57,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 11:23:57,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 11:23:57,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734195898] [2024-11-02 11:23:57,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 11:23:57,309 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 11:23:57,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 11:23:57,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 11:23:57,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 11:23:57,362 INFO L87 Difference]: Start difference. First operand has 26 states, 16 states have (on average 1.625) internal successors, (26), 22 states have internal predecessors, (26), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 11:23:57,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 11:23:57,450 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2024-11-02 11:23:57,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 11:23:57,453 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-02 11:23:57,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 11:23:57,461 INFO L225 Difference]: With dead ends: 26 [2024-11-02 11:23:57,462 INFO L226 Difference]: Without dead ends: 22 [2024-11-02 11:23:57,465 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 11:23:57,471 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 1 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 11:23:57,473 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 60 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 11:23:57,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-02 11:23:57,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2024-11-02 11:23:57,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 14 states have (on average 1.5) internal successors, (21), 19 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-02 11:23:57,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2024-11-02 11:23:57,520 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 8 [2024-11-02 11:23:57,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 11:23:57,521 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2024-11-02 11:23:57,521 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 11:23:57,521 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2024-11-02 11:23:57,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-02 11:23:57,522 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:23:57,523 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 11:23:57,524 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-02 11:23:57,525 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-02 11:23:57,525 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:23:57,525 INFO L85 PathProgramCache]: Analyzing trace with hash 596307359, now seen corresponding path program 1 times [2024-11-02 11:23:57,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 11:23:57,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821251935] [2024-11-02 11:23:57,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:23:57,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 11:23:57,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:23:57,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 11:23:57,601 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 11:23:57,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821251935] [2024-11-02 11:23:57,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821251935] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 11:23:57,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 11:23:57,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-02 11:23:57,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56040940] [2024-11-02 11:23:57,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 11:23:57,604 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 11:23:57,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 11:23:57,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 11:23:57,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 11:23:57,606 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 11:23:57,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 11:23:57,678 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2024-11-02 11:23:57,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 11:23:57,682 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-02 11:23:57,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 11:23:57,683 INFO L225 Difference]: With dead ends: 36 [2024-11-02 11:23:57,683 INFO L226 Difference]: Without dead ends: 18 [2024-11-02 11:23:57,684 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-02 11:23:57,686 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 24 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 11:23:57,686 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 20 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 11:23:57,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2024-11-02 11:23:57,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2024-11-02 11:23:57,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 15 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-02 11:23:57,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2024-11-02 11:23:57,693 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 8 [2024-11-02 11:23:57,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 11:23:57,695 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2024-11-02 11:23:57,695 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 11:23:57,696 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2024-11-02 11:23:57,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-02 11:23:57,698 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:23:57,699 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 11:23:57,699 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-02 11:23:57,699 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-02 11:23:57,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:23:57,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1305653034, now seen corresponding path program 1 times [2024-11-02 11:23:57,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 11:23:57,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637888613] [2024-11-02 11:23:57,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:23:57,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 11:23:57,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:23:57,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 11:23:57,912 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 11:23:57,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637888613] [2024-11-02 11:23:57,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637888613] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 11:23:57,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 11:23:57,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-02 11:23:57,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976133130] [2024-11-02 11:23:57,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 11:23:57,915 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-02 11:23:57,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 11:23:57,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-02 11:23:57,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-02 11:23:57,917 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 11:23:58,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 11:23:58,109 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2024-11-02 11:23:58,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-02 11:23:58,110 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-02 11:23:58,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 11:23:58,111 INFO L225 Difference]: With dead ends: 18 [2024-11-02 11:23:58,111 INFO L226 Difference]: Without dead ends: 17 [2024-11-02 11:23:58,112 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-02 11:23:58,113 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 14 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 11:23:58,114 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 20 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 11:23:58,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-11-02 11:23:58,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-11-02 11:23:58,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.25) internal successors, (15), 14 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-02 11:23:58,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2024-11-02 11:23:58,121 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 9 [2024-11-02 11:23:58,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 11:23:58,121 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2024-11-02 11:23:58,121 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 11:23:58,122 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2024-11-02 11:23:58,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-02 11:23:58,123 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:23:58,123 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 11:23:58,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-02 11:23:58,124 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting twoWayErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-02 11:23:58,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:23:58,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1513453785, now seen corresponding path program 1 times [2024-11-02 11:23:58,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 11:23:58,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343800291] [2024-11-02 11:23:58,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:23:58,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 11:23:58,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-02 11:23:58,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1370947461] [2024-11-02 11:23:58,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:23:58,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 11:23:58,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c22a74c-5e81-400c-9ae1-888887a3a5a5/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 11:23:58,178 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c22a74c-5e81-400c-9ae1-888887a3a5a5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 11:23:58,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c22a74c-5e81-400c-9ae1-888887a3a5a5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-02 11:23:58,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:23:58,255 INFO L255 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-02 11:23:58,261 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 11:23:58,481 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-02 11:23:58,483 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 11:23:58,484 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 11:23:58,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343800291] [2024-11-02 11:23:58,485 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-02 11:23:58,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370947461] [2024-11-02 11:23:58,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1370947461] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 11:23:58,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 11:23:58,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-02 11:23:58,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17673454] [2024-11-02 11:23:58,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 11:23:58,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-02 11:23:58,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 11:23:58,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-02 11:23:58,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-02 11:23:58,493 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 8 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 8 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-02 11:23:58,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 11:23:58,595 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2024-11-02 11:23:58,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-02 11:23:58,596 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 8 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2024-11-02 11:23:58,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 11:23:58,597 INFO L225 Difference]: With dead ends: 23 [2024-11-02 11:23:58,597 INFO L226 Difference]: Without dead ends: 22 [2024-11-02 11:23:58,598 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-02 11:23:58,599 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 4 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 11:23:58,600 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 24 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 11:23:58,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-02 11:23:58,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2024-11-02 11:23:58,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 15 states have (on average 1.2) internal successors, (18), 17 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-02 11:23:58,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2024-11-02 11:23:58,607 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 16 [2024-11-02 11:23:58,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 11:23:58,607 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2024-11-02 11:23:58,608 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 8 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-02 11:23:58,608 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2024-11-02 11:23:58,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-02 11:23:58,609 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:23:58,609 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 11:23:58,631 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c22a74c-5e81-400c-9ae1-888887a3a5a5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-02 11:23:58,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c22a74c-5e81-400c-9ae1-888887a3a5a5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 11:23:58,810 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting twoWayErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-02 11:23:58,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:23:58,811 INFO L85 PathProgramCache]: Analyzing trace with hash -327572867, now seen corresponding path program 1 times [2024-11-02 11:23:58,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 11:23:58,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108165920] [2024-11-02 11:23:58,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:23:58,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 11:23:58,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-02 11:23:58,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [754337562] [2024-11-02 11:23:58,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:23:58,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 11:23:58,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c22a74c-5e81-400c-9ae1-888887a3a5a5/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 11:23:58,832 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c22a74c-5e81-400c-9ae1-888887a3a5a5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 11:23:58,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c22a74c-5e81-400c-9ae1-888887a3a5a5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-02 11:23:58,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:23:58,962 INFO L255 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-02 11:23:58,964 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 11:23:59,062 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-02 11:23:59,062 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 11:23:59,062 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 11:23:59,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108165920] [2024-11-02 11:23:59,062 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-02 11:23:59,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [754337562] [2024-11-02 11:23:59,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [754337562] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 11:23:59,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 11:23:59,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-02 11:23:59,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791924974] [2024-11-02 11:23:59,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 11:23:59,064 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 11:23:59,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 11:23:59,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 11:23:59,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-02 11:23:59,069 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-02 11:23:59,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 11:23:59,174 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2024-11-02 11:23:59,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 11:23:59,174 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2024-11-02 11:23:59,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 11:23:59,175 INFO L225 Difference]: With dead ends: 23 [2024-11-02 11:23:59,175 INFO L226 Difference]: Without dead ends: 22 [2024-11-02 11:23:59,176 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-02 11:23:59,177 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 11:23:59,179 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 35 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 11:23:59,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-02 11:23:59,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2024-11-02 11:23:59,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 16 states have (on average 1.1875) internal successors, (19), 18 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-02 11:23:59,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2024-11-02 11:23:59,189 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 17 [2024-11-02 11:23:59,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 11:23:59,190 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2024-11-02 11:23:59,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-02 11:23:59,190 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2024-11-02 11:23:59,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-02 11:23:59,191 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:23:59,191 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 11:23:59,214 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c22a74c-5e81-400c-9ae1-888887a3a5a5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-02 11:23:59,392 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c22a74c-5e81-400c-9ae1-888887a3a5a5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 11:23:59,392 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting twoWayErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-02 11:23:59,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:23:59,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1813572268, now seen corresponding path program 1 times [2024-11-02 11:23:59,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 11:23:59,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098610721] [2024-11-02 11:23:59,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:23:59,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 11:23:59,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-02 11:23:59,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2062451504] [2024-11-02 11:23:59,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:23:59,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 11:23:59,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c22a74c-5e81-400c-9ae1-888887a3a5a5/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 11:23:59,425 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c22a74c-5e81-400c-9ae1-888887a3a5a5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 11:23:59,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c22a74c-5e81-400c-9ae1-888887a3a5a5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-02 11:23:59,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:23:59,494 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-02 11:23:59,496 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 11:23:59,660 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-02 11:23:59,661 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 11:24:00,130 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-02 11:24:00,130 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 11:24:00,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098610721] [2024-11-02 11:24:00,130 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-02 11:24:00,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2062451504] [2024-11-02 11:24:00,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2062451504] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 11:24:00,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1238552105] [2024-11-02 11:24:00,169 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2024-11-02 11:24:00,169 INFO L166 IcfgInterpreter]: Building call graph [2024-11-02 11:24:00,175 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:96) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:426) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:273) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-02 11:24:00,177 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-02 11:24:00,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2024-11-02 11:24:00,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58661837] [2024-11-02 11:24:00,180 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-02 11:24:00,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-02 11:24:00,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 11:24:00,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-02 11:24:00,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2024-11-02 11:24:00,182 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand has 15 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 15 states have internal predecessors, (29), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-02 11:24:00,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 11:24:00,367 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2024-11-02 11:24:00,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-02 11:24:00,367 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 15 states have internal predecessors, (29), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 27 [2024-11-02 11:24:00,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 11:24:00,368 INFO L225 Difference]: With dead ends: 29 [2024-11-02 11:24:00,368 INFO L226 Difference]: Without dead ends: 27 [2024-11-02 11:24:00,369 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2024-11-02 11:24:00,370 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 10 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 11:24:00,370 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 51 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 11:24:00,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-02 11:24:00,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-11-02 11:24:00,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 20 states have (on average 1.15) internal successors, (23), 22 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-02 11:24:00,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2024-11-02 11:24:00,377 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 27 [2024-11-02 11:24:00,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 11:24:00,378 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2024-11-02 11:24:00,378 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 15 states have internal predecessors, (29), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-02 11:24:00,378 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2024-11-02 11:24:00,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-02 11:24:00,381 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:24:00,381 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-02 11:24:00,404 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c22a74c-5e81-400c-9ae1-888887a3a5a5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-02 11:24:00,586 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c22a74c-5e81-400c-9ae1-888887a3a5a5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 11:24:00,587 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting twoWayErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-02 11:24:00,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:24:00,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1981264423, now seen corresponding path program 2 times [2024-11-02 11:24:00,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 11:24:00,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955116061] [2024-11-02 11:24:00,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:24:00,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 11:24:00,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-02 11:24:00,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1408015453] [2024-11-02 11:24:00,623 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-02 11:24:00,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 11:24:00,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c22a74c-5e81-400c-9ae1-888887a3a5a5/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 11:24:00,626 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c22a74c-5e81-400c-9ae1-888887a3a5a5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 11:24:00,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c22a74c-5e81-400c-9ae1-888887a3a5a5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-02 11:24:00,687 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-02 11:24:00,688 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-02 11:24:00,689 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-02 11:24:00,692 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 11:24:00,873 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 12 proven. 14 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-02 11:24:00,874 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 11:24:01,519 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 12 proven. 14 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-02 11:24:01,519 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 11:24:01,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955116061] [2024-11-02 11:24:01,519 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-02 11:24:01,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408015453] [2024-11-02 11:24:01,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1408015453] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 11:24:01,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [499273641] [2024-11-02 11:24:01,526 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2024-11-02 11:24:01,526 INFO L166 IcfgInterpreter]: Building call graph [2024-11-02 11:24:01,527 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:96) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:426) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:273) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-02 11:24:01,528 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-02 11:24:01,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 16 [2024-11-02 11:24:01,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201794315] [2024-11-02 11:24:01,529 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-02 11:24:01,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-02 11:24:01,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 11:24:01,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-02 11:24:01,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2024-11-02 11:24:01,533 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand has 17 states, 14 states have (on average 2.357142857142857) internal successors, (33), 17 states have internal predecessors, (33), 3 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-02 11:24:01,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 11:24:01,767 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2024-11-02 11:24:01,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-02 11:24:01,768 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 2.357142857142857) internal successors, (33), 17 states have internal predecessors, (33), 3 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 38 [2024-11-02 11:24:01,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 11:24:01,769 INFO L225 Difference]: With dead ends: 27 [2024-11-02 11:24:01,769 INFO L226 Difference]: Without dead ends: 0 [2024-11-02 11:24:01,769 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 56 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2024-11-02 11:24:01,770 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 11:24:01,770 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 95 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 11:24:01,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-02 11:24:01,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-02 11:24:01,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 11:24:01,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-02 11:24:01,773 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 38 [2024-11-02 11:24:01,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 11:24:01,773 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-02 11:24:01,773 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 2.357142857142857) internal successors, (33), 17 states have internal predecessors, (33), 3 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-02 11:24:01,774 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-02 11:24:01,774 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-02 11:24:01,776 INFO L782 garLoopResultBuilder]: Registering result SAFE for location twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 6 remaining) [2024-11-02 11:24:01,777 INFO L782 garLoopResultBuilder]: Registering result SAFE for location twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2024-11-02 11:24:01,777 INFO L782 garLoopResultBuilder]: Registering result SAFE for location twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2024-11-02 11:24:01,778 INFO L782 garLoopResultBuilder]: Registering result SAFE for location twoWayErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2024-11-02 11:24:01,778 INFO L782 garLoopResultBuilder]: Registering result SAFE for location twoWayErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2024-11-02 11:24:01,778 INFO L782 garLoopResultBuilder]: Registering result SAFE for location twoWayErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 6 remaining) [2024-11-02 11:24:01,798 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c22a74c-5e81-400c-9ae1-888887a3a5a5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-02 11:24:01,982 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c22a74c-5e81-400c-9ae1-888887a3a5a5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 11:24:01,985 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2024-11-02 11:24:01,988 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-02 11:24:02,108 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-02 11:24:02,136 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 11:24:02 BoogieIcfgContainer [2024-11-02 11:24:02,137 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-02 11:24:02,138 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-02 11:24:02,139 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-02 11:24:02,139 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-02 11:24:02,140 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:23:56" (3/4) ... [2024-11-02 11:24:02,144 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-02 11:24:02,154 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure twoWay [2024-11-02 11:24:02,160 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-11-02 11:24:02,161 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-02 11:24:02,162 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-02 11:24:02,253 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c22a74c-5e81-400c-9ae1-888887a3a5a5/bin/utaipan-verify-DbMuA5NWw2/witness.graphml [2024-11-02 11:24:02,254 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c22a74c-5e81-400c-9ae1-888887a3a5a5/bin/utaipan-verify-DbMuA5NWw2/witness.yml [2024-11-02 11:24:02,254 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-02 11:24:02,255 INFO L158 Benchmark]: Toolchain (without parser) took 6196.64ms. Allocated memory was 132.1MB in the beginning and 180.4MB in the end (delta: 48.2MB). Free memory was 91.7MB in the beginning and 133.5MB in the end (delta: -41.8MB). Peak memory consumption was 7.9MB. Max. memory is 16.1GB. [2024-11-02 11:24:02,255 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 132.1MB. Free memory is still 72.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-02 11:24:02,255 INFO L158 Benchmark]: CACSL2BoogieTranslator took 296.49ms. Allocated memory is still 132.1MB. Free memory was 91.7MB in the beginning and 80.1MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-11-02 11:24:02,256 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.48ms. Allocated memory is still 132.1MB. Free memory was 80.1MB in the beginning and 78.7MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-02 11:24:02,256 INFO L158 Benchmark]: Boogie Preprocessor took 22.99ms. Allocated memory is still 132.1MB. Free memory was 78.7MB in the beginning and 77.6MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-02 11:24:02,256 INFO L158 Benchmark]: RCFGBuilder took 382.51ms. Allocated memory is still 132.1MB. Free memory was 77.6MB in the beginning and 66.5MB in the end (delta: 11.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-02 11:24:02,257 INFO L158 Benchmark]: TraceAbstraction took 5337.38ms. Allocated memory was 132.1MB in the beginning and 180.4MB in the end (delta: 48.2MB). Free memory was 65.8MB in the beginning and 137.7MB in the end (delta: -71.9MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-02 11:24:02,257 INFO L158 Benchmark]: Witness Printer took 116.30ms. Allocated memory is still 180.4MB. Free memory was 137.7MB in the beginning and 133.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-02 11:24:02,259 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 132.1MB. Free memory is still 72.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 296.49ms. Allocated memory is still 132.1MB. Free memory was 91.7MB in the beginning and 80.1MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.48ms. Allocated memory is still 132.1MB. Free memory was 80.1MB in the beginning and 78.7MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.99ms. Allocated memory is still 132.1MB. Free memory was 78.7MB in the beginning and 77.6MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 382.51ms. Allocated memory is still 132.1MB. Free memory was 77.6MB in the beginning and 66.5MB in the end (delta: 11.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 5337.38ms. Allocated memory was 132.1MB in the beginning and 180.4MB in the end (delta: 48.2MB). Free memory was 65.8MB in the beginning and 137.7MB in the end (delta: -71.9MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 116.30ms. Allocated memory is still 180.4MB. Free memory was 137.7MB in the beginning and 133.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 32]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 32]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 34]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 34]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 36]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 36]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 26 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 5.1s, OverallIterations: 7, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 67 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 60 mSDsluCounter, 305 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 226 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 549 IncrementalHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 79 mSDtfsCounter, 549 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 178 GetRequests, 118 SyntacticMatches, 5 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=6, InterpolantAutomatonStates: 50, 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, 7 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 221 NumberOfCodeBlocks, 215 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 179 ConstructedInterpolants, 0 QuantifiedInterpolants, 541 SizeOfPredicates, 5 NumberOfNonLiveVariables, 264 ConjunctsInSsa, 44 ConjunctsInUnsatCore, 9 InterpolantComputations, 5 PerfectInterpolantSequences, 68/106 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 6 specifications checked. All of them hold - ProcedureContractResult [Line: 26]: Procedure Contract for twoWay Derived contract for procedure twoWay. Requires: ((1 <= terminate) && (n <= 2147483647)) Ensures: (((1 <= terminate) && (((0 == \result) || ((1 == \result) && (((long) n + 1) <= 0))) || (n == 0))) && (n <= 2147483647)) RESULT: Ultimate proved your program to be correct! [2024-11-02 11:24:02,278 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c22a74c-5e81-400c-9ae1-888887a3a5a5/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE