./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/Copenhagen_disj-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5eace8f-8a89-4644-b16b-2e7ccca5510d/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5eace8f-8a89-4644-b16b-2e7ccca5510d/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5eace8f-8a89-4644-b16b-2e7ccca5510d/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5eace8f-8a89-4644-b16b-2e7ccca5510d/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted/Copenhagen_disj-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5eace8f-8a89-4644-b16b-2e7ccca5510d/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5eace8f-8a89-4644-b16b-2e7ccca5510d/bin/uautomizer-verify-aQ6SnzHsRB --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 1d01e47d61f5460eefe4585d287e283c2c540ff348367265b7ce8811693dcaeb --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 05:00:33,011 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 05:00:33,077 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5eace8f-8a89-4644-b16b-2e7ccca5510d/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-64bit-Automizer_Default.epf [2024-11-28 05:00:33,082 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 05:00:33,082 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 05:00:33,109 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 05:00:33,109 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 05:00:33,110 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 05:00:33,110 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 05:00:33,110 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 05:00:33,110 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 05:00:33,110 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 05:00:33,110 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 05:00:33,111 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 05:00:33,111 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 05:00:33,111 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 05:00:33,111 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 05:00:33,111 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 05:00:33,111 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 05:00:33,111 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 05:00:33,111 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 05:00:33,112 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 05:00:33,112 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-28 05:00:33,112 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 05:00:33,112 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 05:00:33,112 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 05:00:33,112 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 05:00:33,112 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 05:00:33,112 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:00:33,112 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:00:33,113 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:00:33,113 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:00:33,113 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 05:00:33,113 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:00:33,113 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:00:33,113 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:00:33,113 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:00:33,115 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 05:00:33,115 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 05:00:33,115 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 05:00:33,116 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 05:00:33,116 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 05:00:33,116 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 05:00:33,116 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 05:00:33,116 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 05:00:33,116 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 05:00:33,116 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 05:00:33,116 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_e5eace8f-8a89-4644-b16b-2e7ccca5510d/bin/uautomizer-verify-aQ6SnzHsRB 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 -> Automizer 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 -> 1d01e47d61f5460eefe4585d287e283c2c540ff348367265b7ce8811693dcaeb [2024-11-28 05:00:33,419 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 05:00:33,428 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 05:00:33,432 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 05:00:33,434 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 05:00:33,435 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 05:00:33,436 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5eace8f-8a89-4644-b16b-2e7ccca5510d/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/termination-crafted/Copenhagen_disj-1.c [2024-11-28 05:00:36,501 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5eace8f-8a89-4644-b16b-2e7ccca5510d/bin/uautomizer-verify-aQ6SnzHsRB/data/90b34858c/fa694a54c9d84eab9a5c8f18ff4f2db6/FLAGb0f1f5a27 [2024-11-28 05:00:36,718 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 05:00:36,719 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5eace8f-8a89-4644-b16b-2e7ccca5510d/sv-benchmarks/c/termination-crafted/Copenhagen_disj-1.c [2024-11-28 05:00:36,726 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5eace8f-8a89-4644-b16b-2e7ccca5510d/bin/uautomizer-verify-aQ6SnzHsRB/data/90b34858c/fa694a54c9d84eab9a5c8f18ff4f2db6/FLAGb0f1f5a27 [2024-11-28 05:00:37,059 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5eace8f-8a89-4644-b16b-2e7ccca5510d/bin/uautomizer-verify-aQ6SnzHsRB/data/90b34858c/fa694a54c9d84eab9a5c8f18ff4f2db6 [2024-11-28 05:00:37,062 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 05:00:37,063 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 05:00:37,065 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 05:00:37,065 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 05:00:37,070 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 05:00:37,070 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:00:37" (1/1) ... [2024-11-28 05:00:37,071 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e34b7df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:00:37, skipping insertion in model container [2024-11-28 05:00:37,071 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:00:37" (1/1) ... [2024-11-28 05:00:37,088 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 05:00:37,219 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:00:37,223 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 05:00:37,234 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:00:37,246 INFO L204 MainTranslator]: Completed translation [2024-11-28 05:00:37,246 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:00:37 WrapperNode [2024-11-28 05:00:37,246 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 05:00:37,247 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 05:00:37,248 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 05:00:37,248 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 05:00:37,254 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:00:37" (1/1) ... [2024-11-28 05:00:37,258 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:00:37" (1/1) ... [2024-11-28 05:00:37,272 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 25 [2024-11-28 05:00:37,272 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 05:00:37,273 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 05:00:37,273 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 05:00:37,273 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 05:00:37,281 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:00:37" (1/1) ... [2024-11-28 05:00:37,282 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:00:37" (1/1) ... [2024-11-28 05:00:37,282 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:00:37" (1/1) ... [2024-11-28 05:00:37,287 INFO L175 MemorySlicer]: No memory access in input program. [2024-11-28 05:00:37,287 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:00:37" (1/1) ... [2024-11-28 05:00:37,288 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:00:37" (1/1) ... [2024-11-28 05:00:37,289 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:00:37" (1/1) ... [2024-11-28 05:00:37,289 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:00:37" (1/1) ... [2024-11-28 05:00:37,294 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:00:37" (1/1) ... [2024-11-28 05:00:37,299 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:00:37" (1/1) ... [2024-11-28 05:00:37,300 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:00:37" (1/1) ... [2024-11-28 05:00:37,300 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 05:00:37,301 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 05:00:37,301 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 05:00:37,301 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 05:00:37,302 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:00:37" (1/1) ... [2024-11-28 05:00:37,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:00:37,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5eace8f-8a89-4644-b16b-2e7ccca5510d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:00:37,345 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5eace8f-8a89-4644-b16b-2e7ccca5510d/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 05:00:37,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5eace8f-8a89-4644-b16b-2e7ccca5510d/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 05:00:37,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 05:00:37,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 05:00:37,460 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 05:00:37,462 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 05:00:37,572 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-11-28 05:00:37,572 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 05:00:37,581 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 05:00:37,582 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-28 05:00:37,582 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:00:37 BoogieIcfgContainer [2024-11-28 05:00:37,582 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 05:00:37,585 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 05:00:37,585 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 05:00:37,590 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 05:00:37,591 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 05:00:37" (1/3) ... [2024-11-28 05:00:37,591 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53d1bc17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:00:37, skipping insertion in model container [2024-11-28 05:00:37,592 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:00:37" (2/3) ... [2024-11-28 05:00:37,592 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53d1bc17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:00:37, skipping insertion in model container [2024-11-28 05:00:37,592 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:00:37" (3/3) ... [2024-11-28 05:00:37,593 INFO L128 eAbstractionObserver]: Analyzing ICFG Copenhagen_disj-1.c [2024-11-28 05:00:37,611 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 05:00:37,613 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Copenhagen_disj-1.c that has 1 procedures, 16 locations, 1 initial locations, 1 loop locations, and 4 error locations. [2024-11-28 05:00:37,678 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 05:00:37,697 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@fecf7b7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 05:00:37,697 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-28 05:00:37,703 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 15 states have internal predecessors, (17), 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) [2024-11-28 05:00:37,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-28 05:00:37,709 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:00:37,710 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-28 05:00:37,711 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)] === [2024-11-28 05:00:37,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:00:37,718 INFO L85 PathProgramCache]: Analyzing trace with hash 28696806, now seen corresponding path program 1 times [2024-11-28 05:00:37,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:00:37,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064415600] [2024-11-28 05:00:37,728 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:00:37,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:00:37,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 05:00:37,828 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 05:00:37,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 05:00:37,853 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 05:00:37,854 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 05:00:37,856 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2024-11-28 05:00:37,858 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2024-11-28 05:00:37,858 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2024-11-28 05:00:37,858 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2024-11-28 05:00:37,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 05:00:37,863 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2024-11-28 05:00:37,879 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-28 05:00:37,882 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 05:00:37 BoogieIcfgContainer [2024-11-28 05:00:37,883 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-28 05:00:37,883 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-28 05:00:37,883 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-28 05:00:37,884 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-28 05:00:37,884 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:00:37" (3/4) ... [2024-11-28 05:00:37,885 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-28 05:00:37,925 INFO L129 tionWitnessGenerator]: Generated YAML witness of length 2. [2024-11-28 05:00:37,966 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5eace8f-8a89-4644-b16b-2e7ccca5510d/bin/uautomizer-verify-aQ6SnzHsRB/witness.graphml [2024-11-28 05:00:37,966 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5eace8f-8a89-4644-b16b-2e7ccca5510d/bin/uautomizer-verify-aQ6SnzHsRB/witness.yml [2024-11-28 05:00:37,966 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-28 05:00:37,968 INFO L158 Benchmark]: Toolchain (without parser) took 904.31ms. Allocated memory is still 117.4MB. Free memory was 92.7MB in the beginning and 55.7MB in the end (delta: 37.0MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-11-28 05:00:37,968 INFO L158 Benchmark]: CDTParser took 0.41ms. Allocated memory is still 117.4MB. Free memory is still 71.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 05:00:37,968 INFO L158 Benchmark]: CACSL2BoogieTranslator took 181.95ms. Allocated memory is still 117.4MB. Free memory was 92.5MB in the beginning and 82.5MB in the end (delta: 10.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 05:00:37,969 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.00ms. Allocated memory is still 117.4MB. Free memory was 82.5MB in the beginning and 81.7MB in the end (delta: 852.3kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 05:00:37,969 INFO L158 Benchmark]: Boogie Preprocessor took 27.71ms. Allocated memory is still 117.4MB. Free memory was 81.7MB in the beginning and 80.7MB in the end (delta: 983.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 05:00:37,969 INFO L158 Benchmark]: RCFGBuilder took 281.25ms. Allocated memory is still 117.4MB. Free memory was 80.7MB in the beginning and 71.8MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 05:00:37,970 INFO L158 Benchmark]: TraceAbstraction took 298.04ms. Allocated memory is still 117.4MB. Free memory was 71.3MB in the beginning and 59.5MB in the end (delta: 11.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-28 05:00:37,970 INFO L158 Benchmark]: Witness Printer took 83.23ms. Allocated memory is still 117.4MB. Free memory was 59.5MB in the beginning and 55.7MB in the end (delta: 3.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 05:00:37,971 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41ms. Allocated memory is still 117.4MB. Free memory is still 71.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 181.95ms. Allocated memory is still 117.4MB. Free memory was 92.5MB in the beginning and 82.5MB in the end (delta: 10.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.00ms. Allocated memory is still 117.4MB. Free memory was 82.5MB in the beginning and 81.7MB in the end (delta: 852.3kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 27.71ms. Allocated memory is still 117.4MB. Free memory was 81.7MB in the beginning and 80.7MB in the end (delta: 983.9kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 281.25ms. Allocated memory is still 117.4MB. Free memory was 80.7MB in the beginning and 71.8MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 298.04ms. Allocated memory is still 117.4MB. Free memory was 71.3MB in the beginning and 59.5MB in the end (delta: 11.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 83.23ms. Allocated memory is still 117.4MB. Free memory was 59.5MB in the beginning and 55.7MB in the end (delta: 3.8MB). There was no memory consumed. 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: [L13] int x, y, oldx; [L14] x = __VERIFIER_nondet_int() [L15] y = __VERIFIER_nondet_int() [L16] COND TRUE x >= 0 || y >= 0 VAL [x=0, y=-2147483648] [L17] oldx = x VAL [oldx=0, y=-2147483648] [L18] y - 1 VAL [oldx=0] - UnprovableResult [Line: 18]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 19]: 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, 16 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=16occurred 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, ConComCheckerStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-11-28 05:00:37,993 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5eace8f-8a89-4644-b16b-2e7ccca5510d/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW)