./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/gcd_4+newton_1_1.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_0fdd7c5c-accc-461c-bfd9-7f00defd458f/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fdd7c5c-accc-461c-bfd9-7f00defd458f/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_0fdd7c5c-accc-461c-bfd9-7f00defd458f/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fdd7c5c-accc-461c-bfd9-7f00defd458f/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/gcd_4+newton_1_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fdd7c5c-accc-461c-bfd9-7f00defd458f/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_0fdd7c5c-accc-461c-bfd9-7f00defd458f/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 6350103920575a4c7a5643f51f7bc8e829a7fbf85ea9b0288d4dadd8696b7030 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:27:57,402 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:27:57,478 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fdd7c5c-accc-461c-bfd9-7f00defd458f/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 04:27:57,483 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:27:57,484 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:27:57,513 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:27:57,514 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:27:57,514 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:27:57,514 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:27:57,515 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:27:57,515 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:27:57,515 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:27:57,515 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:27:57,516 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:27:57,516 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:27:57,516 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:27:57,516 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:27:57,516 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:27:57,517 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:27:57,517 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:27:57,517 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:27:57,517 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:27:57,517 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:27:57,518 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:27:57,518 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:27:57,518 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:27:57,518 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:27:57,518 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:27:57,519 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:27:57,519 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:27:57,519 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:27:57,519 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:27:57,519 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:27:57,520 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:27:57,520 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:27:57,520 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:27:57,520 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:27:57,520 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:27:57,520 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:27:57,521 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:27:57,521 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:27:57,521 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:27:57,521 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:27:57,521 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:27:57,521 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:27:57,521 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:27:57,521 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:27:57,522 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:27:57,522 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_0fdd7c5c-accc-461c-bfd9-7f00defd458f/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 -> 6350103920575a4c7a5643f51f7bc8e829a7fbf85ea9b0288d4dadd8696b7030 [2024-11-28 04:27:57,818 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:27:57,828 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:27:57,831 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:27:57,833 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:27:57,833 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:27:57,835 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fdd7c5c-accc-461c-bfd9-7f00defd458f/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/combinations/gcd_4+newton_1_1.i [2024-11-28 04:28:01,098 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fdd7c5c-accc-461c-bfd9-7f00defd458f/bin/uautomizer-verify-aQ6SnzHsRB/data/6227c3eb8/0eaba6eec9044e929cf3012ff118a701/FLAGdce55c55c [2024-11-28 04:28:01,406 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:28:01,412 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fdd7c5c-accc-461c-bfd9-7f00defd458f/sv-benchmarks/c/combinations/gcd_4+newton_1_1.i [2024-11-28 04:28:01,425 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fdd7c5c-accc-461c-bfd9-7f00defd458f/bin/uautomizer-verify-aQ6SnzHsRB/data/6227c3eb8/0eaba6eec9044e929cf3012ff118a701/FLAGdce55c55c [2024-11-28 04:28:01,462 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fdd7c5c-accc-461c-bfd9-7f00defd458f/bin/uautomizer-verify-aQ6SnzHsRB/data/6227c3eb8/0eaba6eec9044e929cf3012ff118a701 [2024-11-28 04:28:01,465 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:28:01,467 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:28:01,471 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:28:01,471 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:28:01,477 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:28:01,478 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:28:01" (1/1) ... [2024-11-28 04:28:01,479 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d67ae78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:28:01, skipping insertion in model container [2024-11-28 04:28:01,479 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:28:01" (1/1) ... [2024-11-28 04:28:01,504 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:28:01,709 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_0fdd7c5c-accc-461c-bfd9-7f00defd458f/sv-benchmarks/c/combinations/gcd_4+newton_1_1.i[1224,1237] [2024-11-28 04:28:01,756 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_0fdd7c5c-accc-461c-bfd9-7f00defd458f/sv-benchmarks/c/combinations/gcd_4+newton_1_1.i[2806,2819] [2024-11-28 04:28:01,758 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:28:01,772 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:28:01,785 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_0fdd7c5c-accc-461c-bfd9-7f00defd458f/sv-benchmarks/c/combinations/gcd_4+newton_1_1.i[1224,1237] [2024-11-28 04:28:01,811 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_0fdd7c5c-accc-461c-bfd9-7f00defd458f/sv-benchmarks/c/combinations/gcd_4+newton_1_1.i[2806,2819] [2024-11-28 04:28:01,812 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:28:01,835 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:28:01,835 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:28:01 WrapperNode [2024-11-28 04:28:01,836 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:28:01,837 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:28:01,838 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:28:01,838 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:28:01,851 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:28:01" (1/1) ... [2024-11-28 04:28:01,863 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:28:01" (1/1) ... [2024-11-28 04:28:01,896 INFO L138 Inliner]: procedures = 27, calls = 24, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 79 [2024-11-28 04:28:01,896 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:28:01,897 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:28:01,897 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:28:01,897 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:28:01,910 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:28:01" (1/1) ... [2024-11-28 04:28:01,911 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:28:01" (1/1) ... [2024-11-28 04:28:01,912 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:28:01" (1/1) ... [2024-11-28 04:28:01,934 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 04:28:01,934 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:28:01" (1/1) ... [2024-11-28 04:28:01,934 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:28:01" (1/1) ... [2024-11-28 04:28:01,941 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:28:01" (1/1) ... [2024-11-28 04:28:01,946 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:28:01" (1/1) ... [2024-11-28 04:28:01,952 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:28:01" (1/1) ... [2024-11-28 04:28:01,953 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:28:01" (1/1) ... [2024-11-28 04:28:01,954 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:28:01" (1/1) ... [2024-11-28 04:28:01,961 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:28:01,962 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:28:01,962 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:28:01,962 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:28:01,966 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:28:01" (1/1) ... [2024-11-28 04:28:01,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:28:01,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fdd7c5c-accc-461c-bfd9-7f00defd458f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:28:02,010 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fdd7c5c-accc-461c-bfd9-7f00defd458f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:28:02,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fdd7c5c-accc-461c-bfd9-7f00defd458f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:28:02,046 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:28:02,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:28:02,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 04:28:02,047 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:28:02,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:28:02,047 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-28 04:28:02,047 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-28 04:28:02,130 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:28:02,133 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:28:02,371 INFO L? ?]: Removed 24 outVars from TransFormulas that were not future-live. [2024-11-28 04:28:02,371 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:28:02,381 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:28:02,382 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-28 04:28:02,382 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:28:02 BoogieIcfgContainer [2024-11-28 04:28:02,382 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:28:02,384 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:28:02,384 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:28:02,389 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:28:02,390 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:28:01" (1/3) ... [2024-11-28 04:28:02,390 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10aa2456 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:28:02, skipping insertion in model container [2024-11-28 04:28:02,391 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:28:01" (2/3) ... [2024-11-28 04:28:02,391 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10aa2456 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:28:02, skipping insertion in model container [2024-11-28 04:28:02,391 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:28:02" (3/3) ... [2024-11-28 04:28:02,392 INFO L128 eAbstractionObserver]: Analyzing ICFG gcd_4+newton_1_1.i [2024-11-28 04:28:02,409 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:28:02,411 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG gcd_4+newton_1_1.i that has 2 procedures, 33 locations, 1 initial locations, 1 loop locations, and 2 error locations. [2024-11-28 04:28:02,473 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:28:02,486 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;@19a6e14f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:28:02,487 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-28 04:28:02,491 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 04:28:02,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-28 04:28:02,496 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:28:02,497 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:28:02,497 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:28:02,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:28:02,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1386425161, now seen corresponding path program 1 times [2024-11-28 04:28:02,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:28:02,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841475512] [2024-11-28 04:28:02,511 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:28:02,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:28:02,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:28:02,683 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 04:28:02,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:28:02,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841475512] [2024-11-28 04:28:02,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841475512] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:28:02,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:28:02,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:28:02,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511720211] [2024-11-28 04:28:02,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:28:02,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 04:28:02,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:28:02,720 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 04:28:02,721 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 04:28:02,723 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 04:28:02,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:28:02,748 INFO L93 Difference]: Finished difference Result 57 states and 74 transitions. [2024-11-28 04:28:02,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 04:28:02,751 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 04:28:02,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:28:02,758 INFO L225 Difference]: With dead ends: 57 [2024-11-28 04:28:02,759 INFO L226 Difference]: Without dead ends: 26 [2024-11-28 04:28:02,762 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 04:28:02,768 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 04:28:02,771 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 04:28:02,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-28 04:28:02,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2024-11-28 04:28:02,808 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 04:28:02,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2024-11-28 04:28:02,816 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 9 [2024-11-28 04:28:02,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:28:02,816 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2024-11-28 04:28:02,817 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 04:28:02,817 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2024-11-28 04:28:02,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-28 04:28:02,819 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:28:02,819 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:28:02,819 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 04:28:02,820 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:28:02,821 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:28:02,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1329166859, now seen corresponding path program 1 times [2024-11-28 04:28:02,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:28:02,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247144061] [2024-11-28 04:28:02,821 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:28:02,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:28:02,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 04:28:02,864 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 04:28:02,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 04:28:02,919 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 04:28:02,919 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 04:28:02,925 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2024-11-28 04:28:02,931 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-11-28 04:28:02,932 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 04:28:02,938 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-28 04:28:02,957 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-28 04:28:02,963 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 04:28:02 BoogieIcfgContainer [2024-11-28 04:28:02,963 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-28 04:28:02,964 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-28 04:28:02,966 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-28 04:28:02,966 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-28 04:28:02,967 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:28:02" (3/4) ... [2024-11-28 04:28:02,970 INFO L149 WitnessPrinter]: No result that supports witness generation found [2024-11-28 04:28:02,971 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-28 04:28:02,973 INFO L158 Benchmark]: Toolchain (without parser) took 1505.33ms. Allocated memory is still 142.6MB. Free memory was 119.4MB in the beginning and 70.2MB in the end (delta: 49.1MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. [2024-11-28 04:28:02,974 INFO L158 Benchmark]: CDTParser took 0.41ms. Allocated memory is still 142.6MB. Free memory is still 79.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 04:28:02,977 INFO L158 Benchmark]: CACSL2BoogieTranslator took 365.18ms. Allocated memory is still 142.6MB. Free memory was 119.1MB in the beginning and 107.3MB in the end (delta: 11.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 04:28:02,977 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.09ms. Allocated memory is still 142.6MB. Free memory was 107.1MB in the beginning and 105.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 04:28:02,978 INFO L158 Benchmark]: Boogie Preprocessor took 64.26ms. Allocated memory is still 142.6MB. Free memory was 105.7MB in the beginning and 104.1MB in the end (delta: 1.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 04:28:02,978 INFO L158 Benchmark]: RCFGBuilder took 420.90ms. Allocated memory is still 142.6MB. Free memory was 104.1MB in the beginning and 91.9MB in the end (delta: 12.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 04:28:02,979 INFO L158 Benchmark]: TraceAbstraction took 579.30ms. Allocated memory is still 142.6MB. Free memory was 91.2MB in the beginning and 70.5MB in the end (delta: 20.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-28 04:28:02,979 INFO L158 Benchmark]: Witness Printer took 7.24ms. Allocated memory is still 142.6MB. Free memory was 70.5MB in the beginning and 70.2MB in the end (delta: 249.2kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 04:28:02,982 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41ms. Allocated memory is still 142.6MB. Free memory is still 79.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 365.18ms. Allocated memory is still 142.6MB. Free memory was 119.1MB in the beginning and 107.3MB in the end (delta: 11.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 59.09ms. Allocated memory is still 142.6MB. Free memory was 107.1MB in the beginning and 105.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 64.26ms. Allocated memory is still 142.6MB. Free memory was 105.7MB in the beginning and 104.1MB in the end (delta: 1.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 420.90ms. Allocated memory is still 142.6MB. Free memory was 104.1MB in the beginning and 91.9MB in the end (delta: 12.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 579.30ms. Allocated memory is still 142.6MB. Free memory was 91.2MB in the beginning and 70.5MB in the end (delta: 20.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Witness Printer took 7.24ms. Allocated memory is still 142.6MB. Free memory was 70.5MB in the beginning and 70.2MB in the end (delta: 249.2kB). 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 100, overapproximation of someBinaryArithmeticFLOAToperation at line 87. Possible FailurePath: [L115] COND FALSE !(__VERIFIER_nondet_int()) [L118] CALL main2() [L97] float IN = __VERIFIER_nondet_float(); [L98] CALL assume_abort_if_not(IN > -0.2f && IN < 0.2f) [L82] COND FALSE !(!cond) [L98] RET assume_abort_if_not(IN > -0.2f && IN < 0.2f) [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: 0.5s, 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, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-28 04:28:03,003 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fdd7c5c-accc-461c-bfd9-7f00defd458f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, 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_0fdd7c5c-accc-461c-bfd9-7f00defd458f/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fdd7c5c-accc-461c-bfd9-7f00defd458f/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_0fdd7c5c-accc-461c-bfd9-7f00defd458f/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fdd7c5c-accc-461c-bfd9-7f00defd458f/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/gcd_4+newton_1_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fdd7c5c-accc-461c-bfd9-7f00defd458f/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_0fdd7c5c-accc-461c-bfd9-7f00defd458f/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 6350103920575a4c7a5643f51f7bc8e829a7fbf85ea9b0288d4dadd8696b7030 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:28:05,774 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:28:05,877 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fdd7c5c-accc-461c-bfd9-7f00defd458f/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-28 04:28:05,883 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:28:05,883 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:28:05,958 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:28:05,959 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:28:05,963 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:28:05,964 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:28:05,964 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:28:05,964 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:28:05,964 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:28:05,964 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:28:05,965 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:28:05,965 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:28:05,965 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:28:05,965 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:28:05,965 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:28:05,965 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:28:05,965 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:28:05,966 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:28:05,966 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:28:05,966 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:28:05,966 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 04:28:05,966 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-28 04:28:05,968 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-28 04:28:05,968 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:28:05,969 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:28:05,969 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:28:05,969 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:28:05,969 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:28:05,969 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:28:05,969 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:28:05,969 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:28:05,969 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:28:05,969 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:28:05,970 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:28:05,970 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:28:05,970 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:28:05,970 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:28:05,970 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:28:05,970 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:28:05,970 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:28:05,970 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:28:05,970 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-28 04:28:05,970 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-28 04:28:05,971 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:28:05,971 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:28:05,971 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:28:05,971 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:28:05,971 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_0fdd7c5c-accc-461c-bfd9-7f00defd458f/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 -> 6350103920575a4c7a5643f51f7bc8e829a7fbf85ea9b0288d4dadd8696b7030 [2024-11-28 04:28:06,353 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:28:06,363 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:28:06,367 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:28:06,370 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:28:06,370 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:28:06,373 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fdd7c5c-accc-461c-bfd9-7f00defd458f/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/combinations/gcd_4+newton_1_1.i [2024-11-28 04:28:09,526 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fdd7c5c-accc-461c-bfd9-7f00defd458f/bin/uautomizer-verify-aQ6SnzHsRB/data/716093097/af4ab83352c2411eb79a8d0c1fb552b2/FLAG1f2cf49ce [2024-11-28 04:28:09,843 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:28:09,844 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fdd7c5c-accc-461c-bfd9-7f00defd458f/sv-benchmarks/c/combinations/gcd_4+newton_1_1.i [2024-11-28 04:28:09,871 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fdd7c5c-accc-461c-bfd9-7f00defd458f/bin/uautomizer-verify-aQ6SnzHsRB/data/716093097/af4ab83352c2411eb79a8d0c1fb552b2/FLAG1f2cf49ce [2024-11-28 04:28:10,125 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fdd7c5c-accc-461c-bfd9-7f00defd458f/bin/uautomizer-verify-aQ6SnzHsRB/data/716093097/af4ab83352c2411eb79a8d0c1fb552b2 [2024-11-28 04:28:10,130 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:28:10,132 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:28:10,136 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:28:10,136 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:28:10,147 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:28:10,148 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:28:10" (1/1) ... [2024-11-28 04:28:10,151 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b4a2d0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:28:10, skipping insertion in model container [2024-11-28 04:28:10,152 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:28:10" (1/1) ... [2024-11-28 04:28:10,179 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:28:10,375 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_0fdd7c5c-accc-461c-bfd9-7f00defd458f/sv-benchmarks/c/combinations/gcd_4+newton_1_1.i[1224,1237] [2024-11-28 04:28:10,416 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_0fdd7c5c-accc-461c-bfd9-7f00defd458f/sv-benchmarks/c/combinations/gcd_4+newton_1_1.i[2806,2819] [2024-11-28 04:28:10,422 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:28:10,444 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:28:10,460 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_0fdd7c5c-accc-461c-bfd9-7f00defd458f/sv-benchmarks/c/combinations/gcd_4+newton_1_1.i[1224,1237] [2024-11-28 04:28:10,474 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_0fdd7c5c-accc-461c-bfd9-7f00defd458f/sv-benchmarks/c/combinations/gcd_4+newton_1_1.i[2806,2819] [2024-11-28 04:28:10,475 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:28:10,494 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:28:10,495 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:28:10 WrapperNode [2024-11-28 04:28:10,495 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:28:10,496 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:28:10,496 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:28:10,496 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:28:10,504 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:28:10" (1/1) ... [2024-11-28 04:28:10,514 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:28:10" (1/1) ... [2024-11-28 04:28:10,535 INFO L138 Inliner]: procedures = 28, calls = 24, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 76 [2024-11-28 04:28:10,535 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:28:10,536 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:28:10,536 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:28:10,536 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:28:10,547 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:28:10" (1/1) ... [2024-11-28 04:28:10,547 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:28:10" (1/1) ... [2024-11-28 04:28:10,550 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:28:10" (1/1) ... [2024-11-28 04:28:10,564 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 04:28:10,564 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:28:10" (1/1) ... [2024-11-28 04:28:10,565 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:28:10" (1/1) ... [2024-11-28 04:28:10,573 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:28:10" (1/1) ... [2024-11-28 04:28:10,575 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:28:10" (1/1) ... [2024-11-28 04:28:10,579 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:28:10" (1/1) ... [2024-11-28 04:28:10,581 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:28:10" (1/1) ... [2024-11-28 04:28:10,582 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:28:10" (1/1) ... [2024-11-28 04:28:10,586 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:28:10,587 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:28:10,587 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:28:10,587 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:28:10,588 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:28:10" (1/1) ... [2024-11-28 04:28:10,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:28:10,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fdd7c5c-accc-461c-bfd9-7f00defd458f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:28:10,628 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fdd7c5c-accc-461c-bfd9-7f00defd458f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:28:10,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fdd7c5c-accc-461c-bfd9-7f00defd458f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:28:10,667 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:28:10,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-28 04:28:10,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-28 04:28:10,667 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:28:10,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:28:10,668 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-28 04:28:10,668 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-28 04:28:10,767 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:28:10,768 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:28:22,109 INFO L? ?]: Removed 26 outVars from TransFormulas that were not future-live. [2024-11-28 04:28:22,109 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:28:22,121 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:28:22,121 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-28 04:28:22,122 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:28:22 BoogieIcfgContainer [2024-11-28 04:28:22,122 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:28:22,125 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:28:22,125 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:28:22,132 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:28:22,132 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:28:10" (1/3) ... [2024-11-28 04:28:22,133 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@333ee6a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:28:22, skipping insertion in model container [2024-11-28 04:28:22,134 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:28:10" (2/3) ... [2024-11-28 04:28:22,134 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@333ee6a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:28:22, skipping insertion in model container [2024-11-28 04:28:22,134 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:28:22" (3/3) ... [2024-11-28 04:28:22,137 INFO L128 eAbstractionObserver]: Analyzing ICFG gcd_4+newton_1_1.i [2024-11-28 04:28:22,155 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:28:22,156 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG gcd_4+newton_1_1.i that has 2 procedures, 33 locations, 1 initial locations, 1 loop locations, and 2 error locations. [2024-11-28 04:28:22,217 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:28:22,233 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;@404c819e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:28:22,233 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-28 04:28:22,238 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 04:28:22,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-28 04:28:22,245 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:28:22,246 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:28:22,247 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:28:22,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:28:22,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1386425161, now seen corresponding path program 1 times [2024-11-28 04:28:22,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:28:22,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2070435928] [2024-11-28 04:28:22,263 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:28:22,263 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 04:28:22,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fdd7c5c-accc-461c-bfd9-7f00defd458f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat [2024-11-28 04:28:22,268 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fdd7c5c-accc-461c-bfd9-7f00defd458f/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 04:28:22,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fdd7c5c-accc-461c-bfd9-7f00defd458f/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 04:28:23,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:28:23,576 INFO L256 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-28 04:28:23,579 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:28:23,596 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 04:28:23,596 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:28:23,597 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:28:23,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2070435928] [2024-11-28 04:28:23,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2070435928] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:28:23,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:28:23,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:28:23,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009458154] [2024-11-28 04:28:23,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:28:23,603 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 04:28:23,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:28:23,622 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 04:28:23,623 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 04:28:23,626 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 04:28:23,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:28:23,648 INFO L93 Difference]: Finished difference Result 57 states and 74 transitions. [2024-11-28 04:28:23,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 04:28:23,651 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 04:28:23,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:28:23,659 INFO L225 Difference]: With dead ends: 57 [2024-11-28 04:28:23,659 INFO L226 Difference]: Without dead ends: 26 [2024-11-28 04:28:23,665 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 04:28:23,669 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 04:28:23,672 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 04:28:23,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-28 04:28:23,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2024-11-28 04:28:23,711 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 04:28:23,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2024-11-28 04:28:23,720 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 9 [2024-11-28 04:28:23,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:28:23,721 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2024-11-28 04:28:23,722 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 04:28:23,722 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2024-11-28 04:28:23,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-28 04:28:23,724 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:28:23,724 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:28:23,753 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fdd7c5c-accc-461c-bfd9-7f00defd458f/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)] Ended with exit code 0 [2024-11-28 04:28:23,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fdd7c5c-accc-461c-bfd9-7f00defd458f/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 04:28:23,926 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:28:23,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:28:23,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1329166859, now seen corresponding path program 1 times [2024-11-28 04:28:23,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:28:23,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1415879711] [2024-11-28 04:28:23,928 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:28:23,928 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 04:28:23,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fdd7c5c-accc-461c-bfd9-7f00defd458f/bin/uautomizer-verify-aQ6SnzHsRB/mathsat [2024-11-28 04:28:23,931 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fdd7c5c-accc-461c-bfd9-7f00defd458f/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 04:28:23,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fdd7c5c-accc-461c-bfd9-7f00defd458f/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