./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/NonTerminationSimple3.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014d2565-8f90-499a-94d3-2b3a2e5bfe80/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014d2565-8f90-499a-94d3-2b3a2e5bfe80/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014d2565-8f90-499a-94d3-2b3a2e5bfe80/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014d2565-8f90-499a-94d3-2b3a2e5bfe80/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted/NonTerminationSimple3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014d2565-8f90-499a-94d3-2b3a2e5bfe80/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014d2565-8f90-499a-94d3-2b3a2e5bfe80/bin/utaipan-verify-nQ1chXbOIh --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 667f977d647c7ddb67528e51499f9ca669bb7b719340387a8cc9437d2a9c5036 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 16:28:10,522 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 16:28:10,593 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014d2565-8f90-499a-94d3-2b3a2e5bfe80/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Overflow-64bit-Taipan_Default.epf [2023-12-02 16:28:10,597 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 16:28:10,598 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 16:28:10,626 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 16:28:10,627 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 16:28:10,627 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 16:28:10,628 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 16:28:10,629 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 16:28:10,629 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 16:28:10,630 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 16:28:10,630 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 16:28:10,631 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 16:28:10,631 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 16:28:10,632 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 16:28:10,632 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 16:28:10,633 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 16:28:10,633 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 16:28:10,634 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 16:28:10,635 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 16:28:10,636 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 16:28:10,636 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 16:28:10,637 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 16:28:10,638 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 16:28:10,638 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 16:28:10,639 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 16:28:10,639 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 16:28:10,639 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 16:28:10,640 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-12-02 16:28:10,640 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 16:28:10,641 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 16:28:10,641 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 16:28:10,641 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 16:28:10,641 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 16:28:10,642 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 16:28:10,642 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 16:28:10,642 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 16:28:10,642 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 16:28:10,643 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 16:28:10,643 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 16:28:10,643 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 16:28:10,643 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 16:28:10,644 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 16:28:10,644 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 16:28:10,644 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 16:28:10,644 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_014d2565-8f90-499a-94d3-2b3a2e5bfe80/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014d2565-8f90-499a-94d3-2b3a2e5bfe80/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 667f977d647c7ddb67528e51499f9ca669bb7b719340387a8cc9437d2a9c5036 [2023-12-02 16:28:10,882 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 16:28:10,903 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 16:28:10,906 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 16:28:10,907 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 16:28:10,907 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 16:28:10,909 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014d2565-8f90-499a-94d3-2b3a2e5bfe80/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/termination-crafted/NonTerminationSimple3.c [2023-12-02 16:28:13,679 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 16:28:13,879 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 16:28:13,880 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014d2565-8f90-499a-94d3-2b3a2e5bfe80/sv-benchmarks/c/termination-crafted/NonTerminationSimple3.c [2023-12-02 16:28:13,885 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014d2565-8f90-499a-94d3-2b3a2e5bfe80/bin/utaipan-verify-nQ1chXbOIh/data/69d2f74b8/9c60b02b507a4da587a3222486a9b349/FLAG18c435f89 [2023-12-02 16:28:13,897 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014d2565-8f90-499a-94d3-2b3a2e5bfe80/bin/utaipan-verify-nQ1chXbOIh/data/69d2f74b8/9c60b02b507a4da587a3222486a9b349 [2023-12-02 16:28:13,899 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 16:28:13,900 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 16:28:13,901 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 16:28:13,901 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 16:28:13,905 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 16:28:13,906 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:28:13" (1/1) ... [2023-12-02 16:28:13,907 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ab76df8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:28:13, skipping insertion in model container [2023-12-02 16:28:13,907 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:28:13" (1/1) ... [2023-12-02 16:28:13,921 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 16:28:14,036 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:28:14,042 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 16:28:14,052 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:28:14,062 INFO L206 MainTranslator]: Completed translation [2023-12-02 16:28:14,063 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:28:14 WrapperNode [2023-12-02 16:28:14,063 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 16:28:14,064 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 16:28:14,064 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 16:28:14,064 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 16:28:14,071 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:28:14" (1/1) ... [2023-12-02 16:28:14,074 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:28:14" (1/1) ... [2023-12-02 16:28:14,089 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 21 [2023-12-02 16:28:14,090 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 16:28:14,090 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 16:28:14,091 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 16:28:14,091 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 16:28:14,100 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:28:14" (1/1) ... [2023-12-02 16:28:14,100 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:28:14" (1/1) ... [2023-12-02 16:28:14,101 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:28:14" (1/1) ... [2023-12-02 16:28:14,101 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:28:14" (1/1) ... [2023-12-02 16:28:14,103 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:28:14" (1/1) ... [2023-12-02 16:28:14,106 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:28:14" (1/1) ... [2023-12-02 16:28:14,106 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:28:14" (1/1) ... [2023-12-02 16:28:14,107 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:28:14" (1/1) ... [2023-12-02 16:28:14,108 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 16:28:14,109 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 16:28:14,109 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 16:28:14,109 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 16:28:14,110 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:28:14" (1/1) ... [2023-12-02 16:28:14,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 16:28:14,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014d2565-8f90-499a-94d3-2b3a2e5bfe80/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:28:14,136 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014d2565-8f90-499a-94d3-2b3a2e5bfe80/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 16:28:14,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014d2565-8f90-499a-94d3-2b3a2e5bfe80/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 16:28:14,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 16:28:14,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 16:28:14,264 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 16:28:14,267 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 16:28:14,328 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 16:28:14,355 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 16:28:14,355 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 16:28:14,357 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:28:14 BoogieIcfgContainer [2023-12-02 16:28:14,357 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 16:28:14,360 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 16:28:14,361 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 16:28:14,364 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 16:28:14,365 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 04:28:13" (1/3) ... [2023-12-02 16:28:14,365 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22c57f32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:28:14, skipping insertion in model container [2023-12-02 16:28:14,366 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:28:14" (2/3) ... [2023-12-02 16:28:14,366 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22c57f32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:28:14, skipping insertion in model container [2023-12-02 16:28:14,367 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:28:14" (3/3) ... [2023-12-02 16:28:14,368 INFO L112 eAbstractionObserver]: Analyzing ICFG NonTerminationSimple3.c [2023-12-02 16:28:14,389 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 16:28:14,389 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-02 16:28:14,440 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 16:28:14,449 INFO L357 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, mHoare=true, 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;@2d4e8881, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 16:28:14,449 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-02 16:28:14,453 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 4 states have (on average 1.75) internal successors, (7), 6 states have internal predecessors, (7), 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) [2023-12-02 16:28:14,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-12-02 16:28:14,460 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:28:14,460 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-12-02 16:28:14,461 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-12-02 16:28:14,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:28:14,467 INFO L85 PathProgramCache]: Analyzing trace with hash 52247, now seen corresponding path program 1 times [2023-12-02 16:28:14,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:28:14,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321999031] [2023-12-02 16:28:14,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:28:14,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:28:14,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:28:14,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:28:14,653 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:28:14,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321999031] [2023-12-02 16:28:14,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321999031] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:28:14,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:28:14,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 16:28:14,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368746510] [2023-12-02 16:28:14,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:28:14,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 16:28:14,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:28:14,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 16:28:14,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:28:14,695 INFO L87 Difference]: Start difference. First operand has 7 states, 4 states have (on average 1.75) internal successors, (7), 6 states have internal predecessors, (7), 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) Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 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) [2023-12-02 16:28:14,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:28:14,740 INFO L93 Difference]: Finished difference Result 7 states and 7 transitions. [2023-12-02 16:28:14,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 16:28:14,742 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 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) Word has length 3 [2023-12-02 16:28:14,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:28:14,748 INFO L225 Difference]: With dead ends: 7 [2023-12-02 16:28:14,749 INFO L226 Difference]: Without dead ends: 5 [2023-12-02 16:28:14,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:28:14,755 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 6 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:28:14,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 16:28:14,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2023-12-02 16:28:14,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2023-12-02 16:28:14,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2023-12-02 16:28:14,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 5 transitions. [2023-12-02 16:28:14,779 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 5 transitions. Word has length 3 [2023-12-02 16:28:14,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:28:14,780 INFO L495 AbstractCegarLoop]: Abstraction has 5 states and 5 transitions. [2023-12-02 16:28:14,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 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) [2023-12-02 16:28:14,780 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 5 transitions. [2023-12-02 16:28:14,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-12-02 16:28:14,781 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:28:14,781 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-12-02 16:28:14,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 16:28:14,781 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-12-02 16:28:14,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:28:14,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1619702, now seen corresponding path program 1 times [2023-12-02 16:28:14,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:28:14,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802527029] [2023-12-02 16:28:14,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:28:14,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:28:14,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 16:28:14,794 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 16:28:14,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 16:28:14,814 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-12-02 16:28:14,815 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-02 16:28:14,817 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2023-12-02 16:28:14,819 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2023-12-02 16:28:14,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 16:28:14,824 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-12-02 16:28:14,828 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 16:28:14,841 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 04:28:14 BoogieIcfgContainer [2023-12-02 16:28:14,841 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 16:28:14,842 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 16:28:14,842 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 16:28:14,842 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 16:28:14,843 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:28:14" (3/4) ... [2023-12-02 16:28:14,844 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-12-02 16:28:14,874 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014d2565-8f90-499a-94d3-2b3a2e5bfe80/bin/utaipan-verify-nQ1chXbOIh/witness.graphml [2023-12-02 16:28:14,874 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 16:28:14,875 INFO L158 Benchmark]: Toolchain (without parser) took 975.09ms. Allocated memory is still 151.0MB. Free memory was 119.0MB in the beginning and 70.9MB in the end (delta: 48.1MB). Peak memory consumption was 48.2MB. Max. memory is 16.1GB. [2023-12-02 16:28:14,875 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 151.0MB. Free memory was 99.5MB in the beginning and 99.2MB in the end (delta: 262.4kB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 16:28:14,876 INFO L158 Benchmark]: CACSL2BoogieTranslator took 162.45ms. Allocated memory is still 151.0MB. Free memory was 119.0MB in the beginning and 109.8MB in the end (delta: 9.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-12-02 16:28:14,876 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.04ms. Allocated memory is still 151.0MB. Free memory was 109.8MB in the beginning and 108.4MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 16:28:14,877 INFO L158 Benchmark]: Boogie Preprocessor took 17.98ms. Allocated memory is still 151.0MB. Free memory was 108.4MB in the beginning and 107.3MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 16:28:14,877 INFO L158 Benchmark]: RCFGBuilder took 248.20ms. Allocated memory is still 151.0MB. Free memory was 107.3MB in the beginning and 98.0MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-12-02 16:28:14,878 INFO L158 Benchmark]: TraceAbstraction took 481.08ms. Allocated memory is still 151.0MB. Free memory was 97.7MB in the beginning and 72.8MB in the end (delta: 24.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2023-12-02 16:28:14,878 INFO L158 Benchmark]: Witness Printer took 32.32ms. Allocated memory is still 151.0MB. Free memory was 72.8MB in the beginning and 70.9MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 16:28:14,880 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 151.0MB. Free memory was 99.5MB in the beginning and 99.2MB in the end (delta: 262.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 162.45ms. Allocated memory is still 151.0MB. Free memory was 119.0MB in the beginning and 109.8MB in the end (delta: 9.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.04ms. Allocated memory is still 151.0MB. Free memory was 109.8MB in the beginning and 108.4MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 17.98ms. Allocated memory is still 151.0MB. Free memory was 108.4MB in the beginning and 107.3MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 248.20ms. Allocated memory is still 151.0MB. Free memory was 107.3MB in the beginning and 98.0MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 481.08ms. Allocated memory is still 151.0MB. Free memory was 97.7MB in the beginning and 72.8MB in the end (delta: 24.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Witness Printer took 32.32ms. Allocated memory is still 151.0MB. Free memory was 72.8MB in the beginning and 70.9MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. 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 - CounterExampleResult [Line: 18]: integer overflow possible integer overflow possible We found a FailurePath: [L14] int c, x; [L15] c = __VERIFIER_nondet_int() [L16] x = __VERIFIER_nondet_int() [L17] COND TRUE x >= 0 VAL [c=2147483647, x=1] [L18] x + c VAL [c=2147483647, x=1] - UnprovableResult [Line: 18]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9 IncrementalHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 1 mSDtfsCounter, 9 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 2 ConstructedInterpolants, 0 QuantifiedInterpolants, 11 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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 RESULT: Ultimate proved your program to be incorrect! [2023-12-02 16:28:14,903 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014d2565-8f90-499a-94d3-2b3a2e5bfe80/bin/utaipan-verify-nQ1chXbOIh/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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW)