./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/gcd_4+newton_1_2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_298da895-2e08-4888-b072-6c0cb9b73eaa/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_298da895-2e08-4888-b072-6c0cb9b73eaa/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_298da895-2e08-4888-b072-6c0cb9b73eaa/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_298da895-2e08-4888-b072-6c0cb9b73eaa/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/gcd_4+newton_1_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_298da895-2e08-4888-b072-6c0cb9b73eaa/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_298da895-2e08-4888-b072-6c0cb9b73eaa/bin/uautomizer-verify-qhAvR1uOyd --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 65d58fd3e8c5638a351c469fc6c6b86b0bc6efe1f0f08d6df11bfe5a3616f3a3 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 15:33:40,985 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 15:33:41,065 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_298da895-2e08-4888-b072-6c0cb9b73eaa/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 15:33:41,072 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 15:33:41,073 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 15:33:41,100 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 15:33:41,101 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 15:33:41,101 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 15:33:41,101 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 15:33:41,101 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 15:33:41,101 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 15:33:41,102 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 15:33:41,102 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 15:33:41,102 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 15:33:41,102 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 15:33:41,102 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 15:33:41,102 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 15:33:41,103 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 15:33:41,103 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 15:33:41,103 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 15:33:41,103 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 15:33:41,104 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 15:33:41,104 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 15:33:41,104 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 15:33:41,104 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 15:33:41,104 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 15:33:41,104 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 15:33:41,104 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 15:33:41,105 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 15:33:41,105 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 15:33:41,105 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 15:33:41,105 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 15:33:41,105 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:33:41,105 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 15:33:41,106 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 15:33:41,106 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 15:33:41,106 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 15:33:41,106 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 15:33:41,106 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 15:33:41,106 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 15:33:41,106 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 15:33:41,106 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 15:33:41,107 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_298da895-2e08-4888-b072-6c0cb9b73eaa/bin/uautomizer-verify-qhAvR1uOyd 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 -> 65d58fd3e8c5638a351c469fc6c6b86b0bc6efe1f0f08d6df11bfe5a3616f3a3 [2024-11-13 15:33:41,413 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 15:33:41,425 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 15:33:41,428 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 15:33:41,430 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 15:33:41,430 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 15:33:41,431 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_298da895-2e08-4888-b072-6c0cb9b73eaa/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/combinations/gcd_4+newton_1_2.i Unable to find full path for "g++" [2024-11-13 15:33:43,449 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 15:33:43,773 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 15:33:43,774 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_298da895-2e08-4888-b072-6c0cb9b73eaa/sv-benchmarks/c/combinations/gcd_4+newton_1_2.i [2024-11-13 15:33:43,797 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_298da895-2e08-4888-b072-6c0cb9b73eaa/bin/uautomizer-verify-qhAvR1uOyd/data/3ec0ea50a/055dcf15e1c54013b6a1bd8f47698f51/FLAGaf796c31f [2024-11-13 15:33:43,819 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_298da895-2e08-4888-b072-6c0cb9b73eaa/bin/uautomizer-verify-qhAvR1uOyd/data/3ec0ea50a/055dcf15e1c54013b6a1bd8f47698f51 [2024-11-13 15:33:43,822 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 15:33:43,823 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 15:33:43,825 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 15:33:43,826 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 15:33:43,830 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 15:33:43,831 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:33:43" (1/1) ... [2024-11-13 15:33:43,834 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68b8f1cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:33:43, skipping insertion in model container [2024-11-13 15:33:43,835 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:33:43" (1/1) ... [2024-11-13 15:33:43,857 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 15:33:44,034 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_298da895-2e08-4888-b072-6c0cb9b73eaa/sv-benchmarks/c/combinations/gcd_4+newton_1_2.i[1224,1237] [2024-11-13 15:33:44,078 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_298da895-2e08-4888-b072-6c0cb9b73eaa/sv-benchmarks/c/combinations/gcd_4+newton_1_2.i[2806,2819] [2024-11-13 15:33:44,080 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:33:44,093 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 15:33:44,107 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_298da895-2e08-4888-b072-6c0cb9b73eaa/sv-benchmarks/c/combinations/gcd_4+newton_1_2.i[1224,1237] [2024-11-13 15:33:44,126 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_298da895-2e08-4888-b072-6c0cb9b73eaa/sv-benchmarks/c/combinations/gcd_4+newton_1_2.i[2806,2819] [2024-11-13 15:33:44,131 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:33:44,148 INFO L204 MainTranslator]: Completed translation [2024-11-13 15:33:44,149 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:33:44 WrapperNode [2024-11-13 15:33:44,149 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 15:33:44,151 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 15:33:44,151 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 15:33:44,151 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 15:33:44,159 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:33:44" (1/1) ... [2024-11-13 15:33:44,165 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:33:44" (1/1) ... [2024-11-13 15:33:44,191 INFO L138 Inliner]: procedures = 27, calls = 24, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 79 [2024-11-13 15:33:44,195 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 15:33:44,195 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 15:33:44,195 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 15:33:44,195 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 15:33:44,206 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:33:44" (1/1) ... [2024-11-13 15:33:44,206 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:33:44" (1/1) ... [2024-11-13 15:33:44,213 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:33:44" (1/1) ... [2024-11-13 15:33:44,232 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]. [2024-11-13 15:33:44,233 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:33:44" (1/1) ... [2024-11-13 15:33:44,233 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:33:44" (1/1) ... [2024-11-13 15:33:44,241 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:33:44" (1/1) ... [2024-11-13 15:33:44,249 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:33:44" (1/1) ... [2024-11-13 15:33:44,251 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:33:44" (1/1) ... [2024-11-13 15:33:44,259 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:33:44" (1/1) ... [2024-11-13 15:33:44,261 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 15:33:44,262 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 15:33:44,262 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 15:33:44,262 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 15:33:44,264 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:33:44" (1/1) ... [2024-11-13 15:33:44,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:33:44,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_298da895-2e08-4888-b072-6c0cb9b73eaa/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:33:44,298 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_298da895-2e08-4888-b072-6c0cb9b73eaa/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 15:33:44,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_298da895-2e08-4888-b072-6c0cb9b73eaa/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 15:33:44,330 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 15:33:44,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 15:33:44,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-13 15:33:44,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 15:33:44,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 15:33:44,330 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-13 15:33:44,330 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-13 15:33:44,392 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 15:33:44,394 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 15:33:44,557 INFO L? ?]: Removed 24 outVars from TransFormulas that were not future-live. [2024-11-13 15:33:44,557 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 15:33:44,566 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 15:33:44,566 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-13 15:33:44,567 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:33:44 BoogieIcfgContainer [2024-11-13 15:33:44,567 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 15:33:44,570 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 15:33:44,570 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 15:33:44,574 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 15:33:44,575 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 03:33:43" (1/3) ... [2024-11-13 15:33:44,575 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@354ce616 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:33:44, skipping insertion in model container [2024-11-13 15:33:44,575 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:33:44" (2/3) ... [2024-11-13 15:33:44,576 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@354ce616 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:33:44, skipping insertion in model container [2024-11-13 15:33:44,576 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:33:44" (3/3) ... [2024-11-13 15:33:44,577 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_4+newton_1_2.i [2024-11-13 15:33:44,592 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 15:33:44,594 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG gcd_4+newton_1_2.i that has 2 procedures, 33 locations, 1 initial locations, 1 loop locations, and 2 error locations. [2024-11-13 15:33:44,668 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 15:33:44,686 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;@74adc30, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 15:33:44,686 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-13 15:33:44,691 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) [2024-11-13 15:33:44,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-13 15:33:44,697 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:33:44,698 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:33:44,698 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:33:44,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:33:44,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1991454998, now seen corresponding path program 1 times [2024-11-13 15:33:44,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:33:44,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996278244] [2024-11-13 15:33:44,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:33:44,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:33:44,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:33:44,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:33:44,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:33:44,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996278244] [2024-11-13 15:33:44,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996278244] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:33:44,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:33:44,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:33:44,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218435311] [2024-11-13 15:33:44,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:33:44,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-13 15:33:44,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:33:44,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-13 15:33:44,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 15:33:44,897 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) [2024-11-13 15:33:44,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:33:44,918 INFO L93 Difference]: Finished difference Result 57 states and 74 transitions. [2024-11-13 15:33:44,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-13 15:33:44,921 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 [2024-11-13 15:33:44,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:33:44,927 INFO L225 Difference]: With dead ends: 57 [2024-11-13 15:33:44,928 INFO L226 Difference]: Without dead ends: 26 [2024-11-13 15:33:44,931 INFO L431 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 [2024-11-13 15:33:44,933 INFO L432 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 [2024-11-13 15:33:44,934 INFO L433 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] [2024-11-13 15:33:44,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-13 15:33:44,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2024-11-13 15:33:44,966 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) [2024-11-13 15:33:44,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2024-11-13 15:33:44,976 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 9 [2024-11-13 15:33:44,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:33:44,977 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2024-11-13 15:33:44,977 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) [2024-11-13 15:33:44,977 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2024-11-13 15:33:44,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-13 15:33:44,978 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:33:44,978 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:33:44,979 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 15:33:44,979 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:33:44,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:33:44,980 INFO L85 PathProgramCache]: Analyzing trace with hash 2048713300, now seen corresponding path program 1 times [2024-11-13 15:33:44,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:33:44,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119358510] [2024-11-13 15:33:44,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:33:44,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:33:45,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 15:33:45,025 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 15:33:45,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 15:33:45,058 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-13 15:33:45,058 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-13 15:33:45,060 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2024-11-13 15:33:45,062 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-11-13 15:33:45,062 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 15:33:45,068 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-13 15:33:45,083 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-13 15:33:45,090 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 03:33:45 BoogieIcfgContainer [2024-11-13 15:33:45,090 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-13 15:33:45,091 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-13 15:33:45,092 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-13 15:33:45,092 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-13 15:33:45,093 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:33:44" (3/4) ... [2024-11-13 15:33:45,095 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-13 15:33:45,096 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-13 15:33:45,098 INFO L158 Benchmark]: Toolchain (without parser) took 1273.85ms. Allocated memory is still 117.4MB. Free memory was 94.3MB in the beginning and 45.9MB in the end (delta: 48.4MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2024-11-13 15:33:45,098 INFO L158 Benchmark]: CDTParser took 0.48ms. Allocated memory is still 167.8MB. Free memory is still 103.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 15:33:45,099 INFO L158 Benchmark]: CACSL2BoogieTranslator took 325.56ms. Allocated memory is still 117.4MB. Free memory was 94.3MB in the beginning and 82.3MB in the end (delta: 12.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 15:33:45,103 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.81ms. Allocated memory is still 117.4MB. Free memory was 82.3MB in the beginning and 80.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 15:33:45,103 INFO L158 Benchmark]: Boogie Preprocessor took 66.01ms. Allocated memory is still 117.4MB. Free memory was 80.8MB in the beginning and 79.1MB in the end (delta: 1.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 15:33:45,104 INFO L158 Benchmark]: RCFGBuilder took 304.83ms. Allocated memory is still 117.4MB. Free memory was 79.1MB in the beginning and 67.1MB in the end (delta: 12.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 15:33:45,104 INFO L158 Benchmark]: TraceAbstraction took 521.09ms. Allocated memory is still 117.4MB. Free memory was 66.7MB in the beginning and 45.9MB in the end (delta: 20.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-13 15:33:45,104 INFO L158 Benchmark]: Witness Printer took 4.84ms. Allocated memory is still 117.4MB. Free memory was 45.9MB in the beginning and 45.9MB in the end (delta: 42.1kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 15:33:45,107 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.48ms. Allocated memory is still 167.8MB. Free memory is still 103.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 325.56ms. Allocated memory is still 117.4MB. Free memory was 94.3MB in the beginning and 82.3MB in the end (delta: 12.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.81ms. Allocated memory is still 117.4MB. Free memory was 82.3MB in the beginning and 80.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 66.01ms. Allocated memory is still 117.4MB. Free memory was 80.8MB in the beginning and 79.1MB in the end (delta: 1.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 304.83ms. Allocated memory is still 117.4MB. Free memory was 79.1MB in the beginning and 67.1MB in the end (delta: 12.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 521.09ms. Allocated memory is still 117.4MB. Free memory was 66.7MB in the beginning and 45.9MB in the end (delta: 20.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 4.84ms. Allocated memory is still 117.4MB. Free memory was 45.9MB in the beginning and 45.9MB in the end (delta: 42.1kB). 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 > -0.4f && IN < 0.4f) [L82] COND FALSE !(!cond) [L98] RET assume_abort_if_not(IN > -0.4f && IN < 0.4f) [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, 0.1s SatisfiabilityAnalysisTime, 0.1s 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-13 15:33:45,134 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_298da895-2e08-4888-b072-6c0cb9b73eaa/bin/uautomizer-verify-qhAvR1uOyd/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_298da895-2e08-4888-b072-6c0cb9b73eaa/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_298da895-2e08-4888-b072-6c0cb9b73eaa/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_298da895-2e08-4888-b072-6c0cb9b73eaa/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_298da895-2e08-4888-b072-6c0cb9b73eaa/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/gcd_4+newton_1_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_298da895-2e08-4888-b072-6c0cb9b73eaa/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_298da895-2e08-4888-b072-6c0cb9b73eaa/bin/uautomizer-verify-qhAvR1uOyd --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 65d58fd3e8c5638a351c469fc6c6b86b0bc6efe1f0f08d6df11bfe5a3616f3a3 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 15:33:47,666 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 15:33:47,791 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_298da895-2e08-4888-b072-6c0cb9b73eaa/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-13 15:33:47,799 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 15:33:47,799 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 15:33:47,835 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 15:33:47,836 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 15:33:47,836 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 15:33:47,837 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 15:33:47,837 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 15:33:47,838 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 15:33:47,838 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 15:33:47,839 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 15:33:47,839 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 15:33:47,839 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 15:33:47,839 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 15:33:47,839 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 15:33:47,839 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 15:33:47,839 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 15:33:47,840 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 15:33:47,840 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 15:33:47,840 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 15:33:47,840 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 15:33:47,840 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-13 15:33:47,841 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-13 15:33:47,841 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 15:33:47,841 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-13 15:33:47,841 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 15:33:47,841 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 15:33:47,841 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 15:33:47,841 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 15:33:47,841 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 15:33:47,842 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 15:33:47,842 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 15:33:47,842 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:33:47,842 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 15:33:47,842 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 15:33:47,843 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 15:33:47,843 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-13 15:33:47,843 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-13 15:33:47,843 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 15:33:47,844 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 15:33:47,844 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 15:33:47,844 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 15:33:47,844 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_298da895-2e08-4888-b072-6c0cb9b73eaa/bin/uautomizer-verify-qhAvR1uOyd 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 -> 65d58fd3e8c5638a351c469fc6c6b86b0bc6efe1f0f08d6df11bfe5a3616f3a3 [2024-11-13 15:33:48,190 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 15:33:48,200 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 15:33:48,202 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 15:33:48,204 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 15:33:48,204 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 15:33:48,205 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_298da895-2e08-4888-b072-6c0cb9b73eaa/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/combinations/gcd_4+newton_1_2.i Unable to find full path for "g++" [2024-11-13 15:33:50,202 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 15:33:50,429 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 15:33:50,429 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_298da895-2e08-4888-b072-6c0cb9b73eaa/sv-benchmarks/c/combinations/gcd_4+newton_1_2.i [2024-11-13 15:33:50,452 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_298da895-2e08-4888-b072-6c0cb9b73eaa/bin/uautomizer-verify-qhAvR1uOyd/data/846c63297/db12547de10b4645a7db0740fad54587/FLAG8fd7cd4f5 [2024-11-13 15:33:50,756 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_298da895-2e08-4888-b072-6c0cb9b73eaa/bin/uautomizer-verify-qhAvR1uOyd/data/846c63297/db12547de10b4645a7db0740fad54587 [2024-11-13 15:33:50,758 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 15:33:50,761 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 15:33:50,762 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 15:33:50,762 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 15:33:50,768 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 15:33:50,769 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:33:50" (1/1) ... [2024-11-13 15:33:50,772 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4402e55a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:33:50, skipping insertion in model container [2024-11-13 15:33:50,772 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:33:50" (1/1) ... [2024-11-13 15:33:50,790 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 15:33:50,932 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_298da895-2e08-4888-b072-6c0cb9b73eaa/sv-benchmarks/c/combinations/gcd_4+newton_1_2.i[1224,1237] [2024-11-13 15:33:50,958 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_298da895-2e08-4888-b072-6c0cb9b73eaa/sv-benchmarks/c/combinations/gcd_4+newton_1_2.i[2806,2819] [2024-11-13 15:33:50,960 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:33:50,972 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 15:33:50,984 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_298da895-2e08-4888-b072-6c0cb9b73eaa/sv-benchmarks/c/combinations/gcd_4+newton_1_2.i[1224,1237] [2024-11-13 15:33:50,996 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_298da895-2e08-4888-b072-6c0cb9b73eaa/sv-benchmarks/c/combinations/gcd_4+newton_1_2.i[2806,2819] [2024-11-13 15:33:50,997 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:33:51,016 INFO L204 MainTranslator]: Completed translation [2024-11-13 15:33:51,017 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:33:51 WrapperNode [2024-11-13 15:33:51,018 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 15:33:51,019 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 15:33:51,019 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 15:33:51,019 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 15:33:51,025 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:33:51" (1/1) ... [2024-11-13 15:33:51,033 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:33:51" (1/1) ... [2024-11-13 15:33:51,051 INFO L138 Inliner]: procedures = 28, calls = 24, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 76 [2024-11-13 15:33:51,052 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 15:33:51,052 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 15:33:51,052 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 15:33:51,052 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 15:33:51,061 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:33:51" (1/1) ... [2024-11-13 15:33:51,061 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:33:51" (1/1) ... [2024-11-13 15:33:51,064 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:33:51" (1/1) ... [2024-11-13 15:33:51,077 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]. [2024-11-13 15:33:51,078 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:33:51" (1/1) ... [2024-11-13 15:33:51,078 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:33:51" (1/1) ... [2024-11-13 15:33:51,086 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:33:51" (1/1) ... [2024-11-13 15:33:51,089 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:33:51" (1/1) ... [2024-11-13 15:33:51,091 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:33:51" (1/1) ... [2024-11-13 15:33:51,092 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:33:51" (1/1) ... [2024-11-13 15:33:51,094 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 15:33:51,095 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 15:33:51,095 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 15:33:51,095 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 15:33:51,096 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:33:51" (1/1) ... [2024-11-13 15:33:51,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:33:51,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_298da895-2e08-4888-b072-6c0cb9b73eaa/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:33:51,127 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_298da895-2e08-4888-b072-6c0cb9b73eaa/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 15:33:51,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_298da895-2e08-4888-b072-6c0cb9b73eaa/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 15:33:51,159 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 15:33:51,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-13 15:33:51,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-13 15:33:51,160 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 15:33:51,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 15:33:51,161 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-13 15:33:51,161 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-13 15:33:51,243 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 15:33:51,244 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 15:34:01,672 INFO L? ?]: Removed 26 outVars from TransFormulas that were not future-live. [2024-11-13 15:34:01,673 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 15:34:01,682 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 15:34:01,684 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-13 15:34:01,685 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:34:01 BoogieIcfgContainer [2024-11-13 15:34:01,685 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 15:34:01,688 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 15:34:01,689 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 15:34:01,697 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 15:34:01,697 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 03:33:50" (1/3) ... [2024-11-13 15:34:01,698 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@266b9af7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:34:01, skipping insertion in model container [2024-11-13 15:34:01,698 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:33:51" (2/3) ... [2024-11-13 15:34:01,698 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@266b9af7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:34:01, skipping insertion in model container [2024-11-13 15:34:01,698 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:34:01" (3/3) ... [2024-11-13 15:34:01,699 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_4+newton_1_2.i [2024-11-13 15:34:01,716 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 15:34:01,719 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG gcd_4+newton_1_2.i that has 2 procedures, 33 locations, 1 initial locations, 1 loop locations, and 2 error locations. [2024-11-13 15:34:01,783 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 15:34:01,799 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;@413ec3a3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 15:34:01,799 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-13 15:34:01,803 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) [2024-11-13 15:34:01,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-13 15:34:01,809 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:34:01,810 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:34:01,810 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:34:01,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:34:01,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1991454998, now seen corresponding path program 1 times [2024-11-13 15:34:01,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:34:01,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [450002329] [2024-11-13 15:34:01,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:34:01,832 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 [2024-11-13 15:34:01,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_298da895-2e08-4888-b072-6c0cb9b73eaa/bin/uautomizer-verify-qhAvR1uOyd/mathsat [2024-11-13 15:34:01,837 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_298da895-2e08-4888-b072-6c0cb9b73eaa/bin/uautomizer-verify-qhAvR1uOyd/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) [2024-11-13 15:34:01,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_298da895-2e08-4888-b072-6c0cb9b73eaa/bin/uautomizer-verify-qhAvR1uOyd/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 [2024-11-13 15:34:02,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:34:02,983 INFO L255 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-13 15:34:02,986 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:34:03,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:34:03,001 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:34:03,002 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:34:03,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [450002329] [2024-11-13 15:34:03,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [450002329] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:34:03,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:34:03,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:34:03,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290153864] [2024-11-13 15:34:03,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:34:03,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-13 15:34:03,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:34:03,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-13 15:34:03,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 15:34:03,027 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) [2024-11-13 15:34:03,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:34:03,041 INFO L93 Difference]: Finished difference Result 57 states and 74 transitions. [2024-11-13 15:34:03,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-13 15:34:03,043 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 [2024-11-13 15:34:03,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:34:03,049 INFO L225 Difference]: With dead ends: 57 [2024-11-13 15:34:03,049 INFO L226 Difference]: Without dead ends: 26 [2024-11-13 15:34:03,052 INFO L431 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 [2024-11-13 15:34:03,055 INFO L432 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 [2024-11-13 15:34:03,057 INFO L433 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] [2024-11-13 15:34:03,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-13 15:34:03,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2024-11-13 15:34:03,085 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) [2024-11-13 15:34:03,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2024-11-13 15:34:03,090 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 9 [2024-11-13 15:34:03,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:34:03,090 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2024-11-13 15:34:03,090 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) [2024-11-13 15:34:03,091 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2024-11-13 15:34:03,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-13 15:34:03,091 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:34:03,091 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:34:03,112 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_298da895-2e08-4888-b072-6c0cb9b73eaa/bin/uautomizer-verify-qhAvR1uOyd/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)] Ended with exit code 0 [2024-11-13 15:34:03,296 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_298da895-2e08-4888-b072-6c0cb9b73eaa/bin/uautomizer-verify-qhAvR1uOyd/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 [2024-11-13 15:34:03,296 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:34:03,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:34:03,297 INFO L85 PathProgramCache]: Analyzing trace with hash 2048713300, now seen corresponding path program 1 times [2024-11-13 15:34:03,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:34:03,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [171005595] [2024-11-13 15:34:03,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:34:03,298 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 [2024-11-13 15:34:03,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_298da895-2e08-4888-b072-6c0cb9b73eaa/bin/uautomizer-verify-qhAvR1uOyd/mathsat [2024-11-13 15:34:03,300 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_298da895-2e08-4888-b072-6c0cb9b73eaa/bin/uautomizer-verify-qhAvR1uOyd/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) [2024-11-13 15:34:03,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_298da895-2e08-4888-b072-6c0cb9b73eaa/bin/uautomizer-verify-qhAvR1uOyd/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