./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/LeikeHeizmann-TACAS2014-Ex8.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a0165632 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_e459e6ed-0015-4858-a10e-63a57119046f/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e459e6ed-0015-4858-a10e-63a57119046f/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e459e6ed-0015-4858-a10e-63a57119046f/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e459e6ed-0015-4858-a10e-63a57119046f/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/LeikeHeizmann-TACAS2014-Ex8.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e459e6ed-0015-4858-a10e-63a57119046f/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e459e6ed-0015-4858-a10e-63a57119046f/bin/utaipan-verify-YMUCfTKeje --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 e7623716ab1b63fd3dec96336161ed19bdb4ca6ed8b29ceca2bb1161bdbc0766 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 07:27:10,455 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 07:27:10,564 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e459e6ed-0015-4858-a10e-63a57119046f/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Overflow-64bit-Taipan_Default.epf [2024-11-09 07:27:10,572 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 07:27:10,573 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 07:27:10,618 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 07:27:10,619 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 07:27:10,620 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 07:27:10,621 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 07:27:10,623 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 07:27:10,623 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 07:27:10,624 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 07:27:10,625 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 07:27:10,625 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 07:27:10,626 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 07:27:10,626 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 07:27:10,627 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 07:27:10,630 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 07:27:10,631 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 07:27:10,632 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 07:27:10,632 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 07:27:10,637 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 07:27:10,637 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 07:27:10,638 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 07:27:10,638 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 07:27:10,639 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 07:27:10,639 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 07:27:10,639 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 07:27:10,640 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 07:27:10,643 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 07:27:10,644 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-09 07:27:10,644 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 07:27:10,645 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 07:27:10,645 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 07:27:10,646 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 07:27:10,647 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 07:27:10,648 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 07:27:10,648 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 07:27:10,649 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 07:27:10,649 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 07:27:10,650 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 07:27:10,650 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 07:27:10,651 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 07:27:10,651 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 07:27:10,652 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 07:27:10,652 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 07:27:10,653 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_e459e6ed-0015-4858-a10e-63a57119046f/bin/utaipan-verify-YMUCfTKeje/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e459e6ed-0015-4858-a10e-63a57119046f/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e7623716ab1b63fd3dec96336161ed19bdb4ca6ed8b29ceca2bb1161bdbc0766 [2024-11-09 07:27:10,990 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 07:27:11,021 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 07:27:11,025 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 07:27:11,027 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 07:27:11,028 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 07:27:11,030 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e459e6ed-0015-4858-a10e-63a57119046f/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/termination-crafted-lit/LeikeHeizmann-TACAS2014-Ex8.c Unable to find full path for "g++" [2024-11-09 07:27:13,109 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 07:27:13,360 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 07:27:13,361 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e459e6ed-0015-4858-a10e-63a57119046f/sv-benchmarks/c/termination-crafted-lit/LeikeHeizmann-TACAS2014-Ex8.c [2024-11-09 07:27:13,370 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e459e6ed-0015-4858-a10e-63a57119046f/bin/utaipan-verify-YMUCfTKeje/data/b567140b1/9fb79044f3894ba29681d524726251d0/FLAGf6a7bb463 [2024-11-09 07:27:13,392 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e459e6ed-0015-4858-a10e-63a57119046f/bin/utaipan-verify-YMUCfTKeje/data/b567140b1/9fb79044f3894ba29681d524726251d0 [2024-11-09 07:27:13,395 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 07:27:13,397 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 07:27:13,398 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 07:27:13,399 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 07:27:13,409 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 07:27:13,410 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:27:13" (1/1) ... [2024-11-09 07:27:13,411 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@464a6ce6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:27:13, skipping insertion in model container [2024-11-09 07:27:13,412 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:27:13" (1/1) ... [2024-11-09 07:27:13,435 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 07:27:13,593 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 07:27:13,599 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 07:27:13,615 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 07:27:13,629 INFO L204 MainTranslator]: Completed translation [2024-11-09 07:27:13,630 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:27:13 WrapperNode [2024-11-09 07:27:13,630 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 07:27:13,630 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 07:27:13,631 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 07:27:13,631 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 07:27:13,636 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:27:13" (1/1) ... [2024-11-09 07:27:13,640 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:27:13" (1/1) ... [2024-11-09 07:27:13,662 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 29 [2024-11-09 07:27:13,663 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 07:27:13,663 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 07:27:13,664 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 07:27:13,664 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 07:27:13,674 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:27:13" (1/1) ... [2024-11-09 07:27:13,674 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:27:13" (1/1) ... [2024-11-09 07:27:13,675 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:27:13" (1/1) ... [2024-11-09 07:27:13,675 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:27:13" (1/1) ... [2024-11-09 07:27:13,677 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:27:13" (1/1) ... [2024-11-09 07:27:13,680 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:27:13" (1/1) ... [2024-11-09 07:27:13,681 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:27:13" (1/1) ... [2024-11-09 07:27:13,682 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:27:13" (1/1) ... [2024-11-09 07:27:13,683 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 07:27:13,684 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 07:27:13,685 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 07:27:13,685 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 07:27:13,686 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:27:13" (1/1) ... [2024-11-09 07:27:13,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 07:27:13,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e459e6ed-0015-4858-a10e-63a57119046f/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:27:13,719 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e459e6ed-0015-4858-a10e-63a57119046f/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 07:27:13,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e459e6ed-0015-4858-a10e-63a57119046f/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 07:27:13,760 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 07:27:13,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 07:27:13,875 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 07:27:13,878 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 07:27:14,034 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2024-11-09 07:27:14,034 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 07:27:14,074 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 07:27:14,074 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 07:27:14,077 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 07:27:14 BoogieIcfgContainer [2024-11-09 07:27:14,077 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 07:27:14,082 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 07:27:14,082 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 07:27:14,086 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 07:27:14,086 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 07:27:13" (1/3) ... [2024-11-09 07:27:14,087 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e63129c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:27:14, skipping insertion in model container [2024-11-09 07:27:14,087 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:27:13" (2/3) ... [2024-11-09 07:27:14,088 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e63129c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:27:14, skipping insertion in model container [2024-11-09 07:27:14,089 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 07:27:14" (3/3) ... [2024-11-09 07:27:14,090 INFO L112 eAbstractionObserver]: Analyzing ICFG LeikeHeizmann-TACAS2014-Ex8.c [2024-11-09 07:27:14,111 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 07:27:14,112 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-11-09 07:27:14,208 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 07:27:14,220 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;@717d584e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 07:27:14,220 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-09 07:27:14,226 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 13 states have internal predecessors, (16), 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) [2024-11-09 07:27:14,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-09 07:27:14,235 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:27:14,236 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-09 07:27:14,237 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2024-11-09 07:27:14,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:27:14,244 INFO L85 PathProgramCache]: Analyzing trace with hash 60218695, now seen corresponding path program 1 times [2024-11-09 07:27:14,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:27:14,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540745758] [2024-11-09 07:27:14,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:27:14,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:27:14,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 07:27:14,350 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 07:27:14,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 07:27:14,375 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2024-11-09 07:27:14,377 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 07:27:14,378 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2024-11-09 07:27:14,380 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2024-11-09 07:27:14,381 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2024-11-09 07:27:14,381 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2024-11-09 07:27:14,382 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 07:27:14,386 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-11-09 07:27:14,404 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-09 07:27:14,407 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 07:27:14 BoogieIcfgContainer [2024-11-09 07:27:14,407 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-09 07:27:14,408 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-09 07:27:14,409 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-09 07:27:14,409 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-09 07:27:14,409 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 07:27:14" (3/4) ... [2024-11-09 07:27:14,410 INFO L136 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-09 07:27:14,484 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e459e6ed-0015-4858-a10e-63a57119046f/bin/utaipan-verify-YMUCfTKeje/witness.graphml [2024-11-09 07:27:14,484 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-09 07:27:14,486 INFO L158 Benchmark]: Toolchain (without parser) took 1088.95ms. Allocated memory was 140.5MB in the beginning and 174.1MB in the end (delta: 33.6MB). Free memory was 103.0MB in the beginning and 145.3MB in the end (delta: -42.3MB). Peak memory consumption was 44.5MB. Max. memory is 16.1GB. [2024-11-09 07:27:14,488 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 140.5MB. Free memory was 89.1MB in the beginning and 88.9MB in the end (delta: 142.7kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 07:27:14,489 INFO L158 Benchmark]: CACSL2BoogieTranslator took 231.61ms. Allocated memory is still 140.5MB. Free memory was 102.7MB in the beginning and 91.4MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-11-09 07:27:14,490 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.34ms. Allocated memory is still 140.5MB. Free memory was 91.4MB in the beginning and 90.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 07:27:14,491 INFO L158 Benchmark]: Boogie Preprocessor took 20.45ms. Allocated memory is still 140.5MB. Free memory was 90.1MB in the beginning and 89.0MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 07:27:14,497 INFO L158 Benchmark]: RCFGBuilder took 392.59ms. Allocated memory is still 140.5MB. Free memory was 89.0MB in the beginning and 79.3MB in the end (delta: 9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-09 07:27:14,499 INFO L158 Benchmark]: TraceAbstraction took 325.86ms. Allocated memory is still 140.5MB. Free memory was 78.8MB in the beginning and 65.6MB in the end (delta: 13.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-11-09 07:27:14,502 INFO L158 Benchmark]: Witness Printer took 75.87ms. Allocated memory was 140.5MB in the beginning and 174.1MB in the end (delta: 33.6MB). Free memory was 65.6MB in the beginning and 145.3MB in the end (delta: -79.7MB). Peak memory consumption was 6.8MB. Max. memory is 16.1GB. [2024-11-09 07:27:14,509 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 140.5MB. Free memory was 89.1MB in the beginning and 88.9MB in the end (delta: 142.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 231.61ms. Allocated memory is still 140.5MB. Free memory was 102.7MB in the beginning and 91.4MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.34ms. Allocated memory is still 140.5MB. Free memory was 91.4MB in the beginning and 90.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.45ms. Allocated memory is still 140.5MB. Free memory was 90.1MB in the beginning and 89.0MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 392.59ms. Allocated memory is still 140.5MB. Free memory was 89.0MB in the beginning and 79.3MB in the end (delta: 9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 325.86ms. Allocated memory is still 140.5MB. Free memory was 78.8MB in the beginning and 65.6MB in the end (delta: 13.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Witness Printer took 75.87ms. Allocated memory was 140.5MB in the beginning and 174.1MB in the end (delta: 33.6MB). Free memory was 65.6MB in the beginning and 145.3MB in the end (delta: -79.7MB). Peak memory consumption was 6.8MB. 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: 22]: integer overflow possible integer overflow possible We found a FailurePath: [L14] int q, y; [L15] q = __VERIFIER_nondet_int() [L16] y = __VERIFIER_nondet_int() [L17] COND FALSE !(q > 0) VAL [q=1, y=-2147483648] [L17] COND TRUE q > 0 VAL [q=1, y=-2147483648] [L18] COND FALSE !(y > 0) VAL [q=1, y=-2147483648] [L22] y - 1 VAL [q=1] - UnprovableResult [Line: 22]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 23]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 23]: 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, 14 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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! [2024-11-09 07:27:14,559 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e459e6ed-0015-4858-a10e-63a57119046f/bin/utaipan-verify-YMUCfTKeje/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)