./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/gcd_4+newton_1_3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c1fa3c-d9d7-4e2e-9273-20585b785da2/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c1fa3c-d9d7-4e2e-9273-20585b785da2/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_68c1fa3c-d9d7-4e2e-9273-20585b785da2/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c1fa3c-d9d7-4e2e-9273-20585b785da2/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/gcd_4+newton_1_3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c1fa3c-d9d7-4e2e-9273-20585b785da2/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c1fa3c-d9d7-4e2e-9273-20585b785da2/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 44dec35de9ed8408896b6e9513fe1f32435d026e2fe7d21fe3b275ad7f75412d --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:04:16,463 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:04:16,527 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c1fa3c-d9d7-4e2e-9273-20585b785da2/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 04:04:16,534 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:04:16,534 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:04:16,572 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:04:16,574 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:04:16,574 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:04:16,575 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:04:16,575 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:04:16,576 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:04:16,576 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:04:16,576 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:04:16,576 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:04:16,577 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:04:16,577 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:04:16,577 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:04:16,577 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:04:16,577 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:04:16,577 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:04:16,577 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:04:16,577 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:04:16,577 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:04:16,577 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:04:16,577 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:04:16,578 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:04:16,578 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:04:16,578 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:04:16,578 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:04:16,579 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:04:16,579 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:04:16,579 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:04:16,579 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:04:16,579 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:04:16,580 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:04:16,580 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:04:16,580 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:04:16,580 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:04:16,580 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:04:16,580 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:04:16,580 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:04:16,580 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:04:16,580 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:04:16,581 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:04:16,581 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:04:16,581 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:04:16,581 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:04:16,581 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:04:16,581 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_68c1fa3c-d9d7-4e2e-9273-20585b785da2/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 ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 44dec35de9ed8408896b6e9513fe1f32435d026e2fe7d21fe3b275ad7f75412d [2024-11-28 04:04:16,920 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:04:16,930 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:04:16,933 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:04:16,934 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:04:16,935 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:04:16,936 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c1fa3c-d9d7-4e2e-9273-20585b785da2/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/combinations/gcd_4+newton_1_3.i [2024-11-28 04:04:20,169 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c1fa3c-d9d7-4e2e-9273-20585b785da2/bin/uautomizer-verify-aQ6SnzHsRB/data/a815e7b2f/8475616993214208856a18cbd9d970f7/FLAGe0cc5d775 [2024-11-28 04:04:20,531 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:04:20,532 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c1fa3c-d9d7-4e2e-9273-20585b785da2/sv-benchmarks/c/combinations/gcd_4+newton_1_3.i [2024-11-28 04:04:20,556 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c1fa3c-d9d7-4e2e-9273-20585b785da2/bin/uautomizer-verify-aQ6SnzHsRB/data/a815e7b2f/8475616993214208856a18cbd9d970f7/FLAGe0cc5d775 [2024-11-28 04:04:20,774 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c1fa3c-d9d7-4e2e-9273-20585b785da2/bin/uautomizer-verify-aQ6SnzHsRB/data/a815e7b2f/8475616993214208856a18cbd9d970f7 [2024-11-28 04:04:20,777 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:04:20,780 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:04:20,782 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:04:20,783 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:04:20,792 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:04:20,794 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:04:20" (1/1) ... [2024-11-28 04:04:20,797 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ba8112b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:04:20, skipping insertion in model container [2024-11-28 04:04:20,797 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:04:20" (1/1) ... [2024-11-28 04:04:20,824 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:04:21,028 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c1fa3c-d9d7-4e2e-9273-20585b785da2/sv-benchmarks/c/combinations/gcd_4+newton_1_3.i[1224,1237] [2024-11-28 04:04:21,077 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c1fa3c-d9d7-4e2e-9273-20585b785da2/sv-benchmarks/c/combinations/gcd_4+newton_1_3.i[2806,2819] [2024-11-28 04:04:21,079 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:04:21,103 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:04:21,121 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c1fa3c-d9d7-4e2e-9273-20585b785da2/sv-benchmarks/c/combinations/gcd_4+newton_1_3.i[1224,1237] [2024-11-28 04:04:21,147 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c1fa3c-d9d7-4e2e-9273-20585b785da2/sv-benchmarks/c/combinations/gcd_4+newton_1_3.i[2806,2819] [2024-11-28 04:04:21,148 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:04:21,172 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:04:21,173 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:04:21 WrapperNode [2024-11-28 04:04:21,175 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:04:21,176 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:04:21,177 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:04:21,177 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:04:21,188 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:04:21" (1/1) ... [2024-11-28 04:04:21,199 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:04:21" (1/1) ... [2024-11-28 04:04:21,230 INFO L138 Inliner]: procedures = 27, calls = 24, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 79 [2024-11-28 04:04:21,232 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:04:21,232 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:04:21,233 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:04:21,233 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:04:21,245 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:04:21" (1/1) ... [2024-11-28 04:04:21,245 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:04:21" (1/1) ... [2024-11-28 04:04:21,249 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:04:21" (1/1) ... [2024-11-28 04:04:21,266 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8]. The 0 writes are split as follows [0, 0]. [2024-11-28 04:04:21,267 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:04:21" (1/1) ... [2024-11-28 04:04:21,267 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:04:21" (1/1) ... [2024-11-28 04:04:21,273 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:04:21" (1/1) ... [2024-11-28 04:04:21,274 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:04:21" (1/1) ... [2024-11-28 04:04:21,278 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:04:21" (1/1) ... [2024-11-28 04:04:21,280 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:04:21" (1/1) ... [2024-11-28 04:04:21,281 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:04:21" (1/1) ... [2024-11-28 04:04:21,283 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:04:21,284 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:04:21,284 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:04:21,285 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:04:21,286 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:04:21" (1/1) ... [2024-11-28 04:04:21,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:04:21,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c1fa3c-d9d7-4e2e-9273-20585b785da2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:04:21,326 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c1fa3c-d9d7-4e2e-9273-20585b785da2/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:04:21,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c1fa3c-d9d7-4e2e-9273-20585b785da2/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:04:21,360 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:04:21,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:04:21,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 04:04:21,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:04:21,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:04:21,360 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-28 04:04:21,361 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-28 04:04:21,435 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:04:21,437 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:04:21,594 INFO L? ?]: Removed 24 outVars from TransFormulas that were not future-live. [2024-11-28 04:04:21,594 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:04:21,605 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:04:21,606 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-28 04:04:21,606 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:04:21 BoogieIcfgContainer [2024-11-28 04:04:21,606 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:04:21,609 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:04:21,610 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:04:21,616 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:04:21,616 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:04:20" (1/3) ... [2024-11-28 04:04:21,618 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f214631 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:04:21, skipping insertion in model container [2024-11-28 04:04:21,619 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:04:21" (2/3) ... [2024-11-28 04:04:21,619 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f214631 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:04:21, skipping insertion in model container [2024-11-28 04:04:21,619 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:04:21" (3/3) ... [2024-11-28 04:04:21,621 INFO L128 eAbstractionObserver]: Analyzing ICFG gcd_4+newton_1_3.i [2024-11-28 04:04:21,641 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:04:21,644 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG gcd_4+newton_1_3.i that has 2 procedures, 33 locations, 1 initial locations, 1 loop locations, and 2 error locations. [2024-11-28 04:04:21,715 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:04:21,732 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;@5593b3d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:04:21,732 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-28 04:04:21,736 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 28 states have internal predecessors, (38), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 04:04:21,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-28 04:04:21,742 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:04:21,743 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:04:21,743 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:04:21,750 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:04:21,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1386425161, now seen corresponding path program 1 times [2024-11-28 04:04:21,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:04:21,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851221398] [2024-11-28 04:04:21,760 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:21,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:04:21,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:04:21,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:04:21,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:04:21,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851221398] [2024-11-28 04:04:21,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851221398] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:04:21,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:04:21,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:04:21,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946978523] [2024-11-28 04:04:21,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:04:21,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 04:04:21,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:04:21,926 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 04:04:21,927 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 04:04:21,929 INFO L87 Difference]: Start difference. First operand has 33 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 28 states have internal predecessors, (38), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 04:04:21,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:04:21,948 INFO L93 Difference]: Finished difference Result 57 states and 74 transitions. [2024-11-28 04:04:21,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 04:04:21,950 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2024-11-28 04:04:21,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:04:21,956 INFO L225 Difference]: With dead ends: 57 [2024-11-28 04:04:21,956 INFO L226 Difference]: Without dead ends: 26 [2024-11-28 04:04:21,959 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 04:04:21,962 INFO L435 NwaCegarLoop]: 40 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:04:21,963 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:04:21,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-28 04:04:21,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2024-11-28 04:04:21,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 20 states have (on average 1.35) internal successors, (27), 22 states have internal predecessors, (27), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:04:22,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2024-11-28 04:04:22,004 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 9 [2024-11-28 04:04:22,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:04:22,005 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2024-11-28 04:04:22,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 04:04:22,005 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2024-11-28 04:04:22,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-28 04:04:22,005 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:04:22,005 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:04:22,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 04:04:22,008 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:04:22,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:04:22,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1329166859, now seen corresponding path program 1 times [2024-11-28 04:04:22,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:04:22,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018913599] [2024-11-28 04:04:22,009 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:22,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:04:22,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 04:04:22,038 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 04:04:22,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 04:04:22,067 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 04:04:22,068 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 04:04:22,069 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2024-11-28 04:04:22,071 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-11-28 04:04:22,072 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 04:04:22,075 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-28 04:04:22,093 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-28 04:04:22,101 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 04:04:22 BoogieIcfgContainer [2024-11-28 04:04:22,101 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-28 04:04:22,102 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-28 04:04:22,102 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-28 04:04:22,103 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-28 04:04:22,104 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:04:21" (3/4) ... [2024-11-28 04:04:22,106 INFO L149 WitnessPrinter]: No result that supports witness generation found [2024-11-28 04:04:22,107 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-28 04:04:22,108 INFO L158 Benchmark]: Toolchain (without parser) took 1328.18ms. Allocated memory is still 117.4MB. Free memory was 92.7MB in the beginning and 43.9MB in the end (delta: 48.8MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2024-11-28 04:04:22,108 INFO L158 Benchmark]: CDTParser took 0.40ms. Allocated memory is still 167.8MB. Free memory is still 102.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 04:04:22,109 INFO L158 Benchmark]: CACSL2BoogieTranslator took 393.23ms. Allocated memory is still 117.4MB. Free memory was 92.7MB in the beginning and 80.5MB in the end (delta: 12.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 04:04:22,109 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.73ms. Allocated memory is still 117.4MB. Free memory was 80.5MB in the beginning and 78.8MB in the end (delta: 1.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 04:04:22,110 INFO L158 Benchmark]: Boogie Preprocessor took 51.00ms. Allocated memory is still 117.4MB. Free memory was 78.8MB in the beginning and 77.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 04:04:22,111 INFO L158 Benchmark]: RCFGBuilder took 322.01ms. Allocated memory is still 117.4MB. Free memory was 77.4MB in the beginning and 65.1MB in the end (delta: 12.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 04:04:22,112 INFO L158 Benchmark]: TraceAbstraction took 492.88ms. Allocated memory is still 117.4MB. Free memory was 64.7MB in the beginning and 44.2MB in the end (delta: 20.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-28 04:04:22,112 INFO L158 Benchmark]: Witness Printer took 5.15ms. Allocated memory is still 117.4MB. Free memory is still 43.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 04:04:22,115 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40ms. Allocated memory is still 167.8MB. Free memory is still 102.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 393.23ms. Allocated memory is still 117.4MB. Free memory was 92.7MB in the beginning and 80.5MB in the end (delta: 12.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.73ms. Allocated memory is still 117.4MB. Free memory was 80.5MB in the beginning and 78.8MB in the end (delta: 1.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 51.00ms. Allocated memory is still 117.4MB. Free memory was 78.8MB in the beginning and 77.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 322.01ms. Allocated memory is still 117.4MB. Free memory was 77.4MB in the beginning and 65.1MB in the end (delta: 12.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 492.88ms. Allocated memory is still 117.4MB. Free memory was 64.7MB in the beginning and 44.2MB in the end (delta: 20.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 5.15ms. Allocated memory is still 117.4MB. Free memory is still 43.9MB. 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 - UnprovableResult [Line: 109]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 98, overapproximation of someBinaryDOUBLEComparisonOperation at line 108, overapproximation of someBinaryArithmeticFLOAToperation at line 92, overapproximation of someBinaryArithmeticFLOAToperation at line 87, overapproximation of someBinaryArithmeticFLOAToperation at line 100. Possible FailurePath: [L115] COND FALSE !(__VERIFIER_nondet_int()) [L118] CALL main2() [L97] float IN = __VERIFIER_nondet_float(); [L98] CALL assume_abort_if_not(IN > -0.6f && IN < 0.6f) [L82] COND FALSE !(!cond) [L98] RET assume_abort_if_not(IN > -0.6f && IN < 0.6f) [L100] CALL, EXPR f(IN) [L87] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L100] RET, EXPR f(IN) [L100] CALL, EXPR fp(IN) [L92] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L100] RET, EXPR fp(IN) [L100] float x = IN - f(IN)/fp(IN); [L108] COND TRUE !(x < 0.1) [L109] reach_error() - UnprovableResult [Line: 27]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 33 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, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 40 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 40 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=0, InterpolantAutomatonStates: 2, 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, 0.0s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 8 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, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-28 04:04:22,139 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c1fa3c-d9d7-4e2e-9273-20585b785da2/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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c1fa3c-d9d7-4e2e-9273-20585b785da2/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c1fa3c-d9d7-4e2e-9273-20585b785da2/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_68c1fa3c-d9d7-4e2e-9273-20585b785da2/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c1fa3c-d9d7-4e2e-9273-20585b785da2/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/gcd_4+newton_1_3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c1fa3c-d9d7-4e2e-9273-20585b785da2/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c1fa3c-d9d7-4e2e-9273-20585b785da2/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 44dec35de9ed8408896b6e9513fe1f32435d026e2fe7d21fe3b275ad7f75412d --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:04:24,803 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:04:24,923 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c1fa3c-d9d7-4e2e-9273-20585b785da2/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-28 04:04:24,945 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:04:24,950 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:04:24,993 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:04:24,994 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:04:24,994 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:04:24,995 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:04:24,995 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:04:24,995 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:04:24,995 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:04:24,996 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:04:24,996 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:04:24,996 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:04:24,996 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:04:24,996 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:04:24,997 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:04:24,997 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:04:24,997 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:04:24,997 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:04:24,997 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:04:24,997 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:04:24,997 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 04:04:24,998 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-28 04:04:24,998 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-28 04:04:24,998 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:04:24,998 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:04:24,998 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:04:24,998 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:04:24,999 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:04:24,999 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:04:24,999 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:04:24,999 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:04:24,999 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:04:24,999 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:04:24,999 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:04:25,000 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:04:25,000 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:04:25,000 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:04:25,000 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:04:25,000 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:04:25,000 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:04:25,001 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:04:25,001 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-28 04:04:25,001 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-28 04:04:25,001 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:04:25,001 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:04:25,001 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:04:25,001 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:04:25,001 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_68c1fa3c-d9d7-4e2e-9273-20585b785da2/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 ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 44dec35de9ed8408896b6e9513fe1f32435d026e2fe7d21fe3b275ad7f75412d [2024-11-28 04:04:25,280 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:04:25,289 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:04:25,291 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:04:25,293 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:04:25,293 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:04:25,295 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c1fa3c-d9d7-4e2e-9273-20585b785da2/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/combinations/gcd_4+newton_1_3.i [2024-11-28 04:04:28,228 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c1fa3c-d9d7-4e2e-9273-20585b785da2/bin/uautomizer-verify-aQ6SnzHsRB/data/1bcad59fa/1edac4f961034405b3eaac431b2e147b/FLAG365b5b157 [2024-11-28 04:04:28,527 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:04:28,527 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c1fa3c-d9d7-4e2e-9273-20585b785da2/sv-benchmarks/c/combinations/gcd_4+newton_1_3.i [2024-11-28 04:04:28,552 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c1fa3c-d9d7-4e2e-9273-20585b785da2/bin/uautomizer-verify-aQ6SnzHsRB/data/1bcad59fa/1edac4f961034405b3eaac431b2e147b/FLAG365b5b157 [2024-11-28 04:04:28,580 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c1fa3c-d9d7-4e2e-9273-20585b785da2/bin/uautomizer-verify-aQ6SnzHsRB/data/1bcad59fa/1edac4f961034405b3eaac431b2e147b [2024-11-28 04:04:28,583 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:04:28,584 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:04:28,585 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:04:28,586 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:04:28,592 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:04:28,593 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:04:28" (1/1) ... [2024-11-28 04:04:28,594 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cd7364c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:04:28, skipping insertion in model container [2024-11-28 04:04:28,595 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:04:28" (1/1) ... [2024-11-28 04:04:28,612 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:04:28,799 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c1fa3c-d9d7-4e2e-9273-20585b785da2/sv-benchmarks/c/combinations/gcd_4+newton_1_3.i[1224,1237] [2024-11-28 04:04:28,844 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c1fa3c-d9d7-4e2e-9273-20585b785da2/sv-benchmarks/c/combinations/gcd_4+newton_1_3.i[2806,2819] [2024-11-28 04:04:28,846 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:04:28,862 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:04:28,877 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c1fa3c-d9d7-4e2e-9273-20585b785da2/sv-benchmarks/c/combinations/gcd_4+newton_1_3.i[1224,1237] [2024-11-28 04:04:28,897 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c1fa3c-d9d7-4e2e-9273-20585b785da2/sv-benchmarks/c/combinations/gcd_4+newton_1_3.i[2806,2819] [2024-11-28 04:04:28,900 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:04:28,924 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:04:28,924 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:04:28 WrapperNode [2024-11-28 04:04:28,925 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:04:28,926 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:04:28,926 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:04:28,927 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:04:28,937 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:04:28" (1/1) ... [2024-11-28 04:04:28,946 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:04:28" (1/1) ... [2024-11-28 04:04:28,971 INFO L138 Inliner]: procedures = 28, calls = 24, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 76 [2024-11-28 04:04:28,972 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:04:28,972 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:04:28,972 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:04:28,972 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:04:28,983 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:04:28" (1/1) ... [2024-11-28 04:04:28,984 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:04:28" (1/1) ... [2024-11-28 04:04:28,987 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:04:28" (1/1) ... [2024-11-28 04:04:28,998 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8]. The 0 writes are split as follows [0, 0]. [2024-11-28 04:04:28,998 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:04:28" (1/1) ... [2024-11-28 04:04:28,999 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:04:28" (1/1) ... [2024-11-28 04:04:29,006 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:04:28" (1/1) ... [2024-11-28 04:04:29,007 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:04:28" (1/1) ... [2024-11-28 04:04:29,010 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:04:28" (1/1) ... [2024-11-28 04:04:29,012 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:04:28" (1/1) ... [2024-11-28 04:04:29,013 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:04:28" (1/1) ... [2024-11-28 04:04:29,015 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:04:29,016 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:04:29,016 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:04:29,016 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:04:29,018 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:04:28" (1/1) ... [2024-11-28 04:04:29,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:04:29,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c1fa3c-d9d7-4e2e-9273-20585b785da2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:04:29,050 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c1fa3c-d9d7-4e2e-9273-20585b785da2/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:04:29,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c1fa3c-d9d7-4e2e-9273-20585b785da2/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:04:29,078 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:04:29,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-28 04:04:29,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-28 04:04:29,078 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:04:29,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:04:29,079 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-28 04:04:29,079 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-28 04:04:29,146 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:04:29,148 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:04:39,694 INFO L? ?]: Removed 26 outVars from TransFormulas that were not future-live. [2024-11-28 04:04:39,695 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:04:39,704 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:04:39,704 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-28 04:04:39,705 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:04:39 BoogieIcfgContainer [2024-11-28 04:04:39,705 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:04:39,707 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:04:39,707 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:04:39,712 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:04:39,712 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:04:28" (1/3) ... [2024-11-28 04:04:39,713 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73f28838 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:04:39, skipping insertion in model container [2024-11-28 04:04:39,713 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:04:28" (2/3) ... [2024-11-28 04:04:39,713 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73f28838 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:04:39, skipping insertion in model container [2024-11-28 04:04:39,713 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:04:39" (3/3) ... [2024-11-28 04:04:39,715 INFO L128 eAbstractionObserver]: Analyzing ICFG gcd_4+newton_1_3.i [2024-11-28 04:04:39,729 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:04:39,731 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG gcd_4+newton_1_3.i that has 2 procedures, 33 locations, 1 initial locations, 1 loop locations, and 2 error locations. [2024-11-28 04:04:39,779 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:04:39,791 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;@2b73fd77, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:04:39,791 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-28 04:04:39,795 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 28 states have internal predecessors, (38), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 04:04:39,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-28 04:04:39,801 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:04:39,802 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:04:39,802 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:04:39,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:04:39,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1386425161, now seen corresponding path program 1 times [2024-11-28 04:04:39,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:04:39,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [71794696] [2024-11-28 04:04:39,818 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:39,818 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-28 04:04:39,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c1fa3c-d9d7-4e2e-9273-20585b785da2/bin/uautomizer-verify-aQ6SnzHsRB/mathsat [2024-11-28 04:04:39,821 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c1fa3c-d9d7-4e2e-9273-20585b785da2/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-28 04:04:39,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c1fa3c-d9d7-4e2e-9273-20585b785da2/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-11-28 04:04:40,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:04:40,940 INFO L256 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-28 04:04:40,943 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:04:40,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:04:40,958 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:04:40,958 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:04:40,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [71794696] [2024-11-28 04:04:40,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [71794696] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:04:40,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:04:40,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:04:40,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020008739] [2024-11-28 04:04:40,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:04:40,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 04:04:40,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:04:40,982 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 04:04:40,983 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 04:04:40,985 INFO L87 Difference]: Start difference. First operand has 33 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 28 states have internal predecessors, (38), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 04:04:41,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:04:41,001 INFO L93 Difference]: Finished difference Result 57 states and 74 transitions. [2024-11-28 04:04:41,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 04:04:41,003 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2024-11-28 04:04:41,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:04:41,009 INFO L225 Difference]: With dead ends: 57 [2024-11-28 04:04:41,009 INFO L226 Difference]: Without dead ends: 26 [2024-11-28 04:04:41,012 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 04:04:41,015 INFO L435 NwaCegarLoop]: 40 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:04:41,015 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:04:41,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-28 04:04:41,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2024-11-28 04:04:41,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 20 states have (on average 1.35) internal successors, (27), 22 states have internal predecessors, (27), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:04:41,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2024-11-28 04:04:41,047 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 9 [2024-11-28 04:04:41,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:04:41,048 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2024-11-28 04:04:41,048 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 04:04:41,048 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2024-11-28 04:04:41,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-28 04:04:41,049 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:04:41,049 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:04:41,072 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c1fa3c-d9d7-4e2e-9273-20585b785da2/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2024-11-28 04:04:41,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c1fa3c-d9d7-4e2e-9273-20585b785da2/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-28 04:04:41,250 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:04:41,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:04:41,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1329166859, now seen corresponding path program 1 times [2024-11-28 04:04:41,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:04:41,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [438539370] [2024-11-28 04:04:41,252 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:41,252 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-28 04:04:41,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c1fa3c-d9d7-4e2e-9273-20585b785da2/bin/uautomizer-verify-aQ6SnzHsRB/mathsat [2024-11-28 04:04:41,258 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c1fa3c-d9d7-4e2e-9273-20585b785da2/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-28 04:04:41,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c1fa3c-d9d7-4e2e-9273-20585b785da2/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process