./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/square_5+soft_float_4-2a.c.cil.c --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_165d5d92-8684-482f-92dd-cf74e5d708d9/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_165d5d92-8684-482f-92dd-cf74e5d708d9/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_165d5d92-8684-482f-92dd-cf74e5d708d9/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_165d5d92-8684-482f-92dd-cf74e5d708d9/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/square_5+soft_float_4-2a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_165d5d92-8684-482f-92dd-cf74e5d708d9/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_165d5d92-8684-482f-92dd-cf74e5d708d9/bin/uautomizer-verify-84ZbGMXZE1 --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 2d3a0113f0e8b781548a014794ff4c594483afc44f19a8c585ba3b3e554b1b3f --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 07:13:31,402 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 07:13:31,464 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_165d5d92-8684-482f-92dd-cf74e5d708d9/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 07:13:31,469 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 07:13:31,469 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 07:13:31,494 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 07:13:31,495 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 07:13:31,495 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 07:13:31,496 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 07:13:31,496 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 07:13:31,496 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 07:13:31,496 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 07:13:31,496 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 07:13:31,496 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 07:13:31,497 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 07:13:31,497 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 07:13:31,497 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 07:13:31,497 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 07:13:31,497 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 07:13:31,497 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 07:13:31,497 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 07:13:31,497 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 07:13:31,498 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 07:13:31,498 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 07:13:31,498 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 07:13:31,498 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 07:13:31,498 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 07:13:31,498 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 07:13:31,498 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 07:13:31,498 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 07:13:31,498 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 07:13:31,498 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 07:13:31,499 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:13:31,499 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 07:13:31,499 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 07:13:31,499 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 07:13:31,499 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 07:13:31,499 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:13:31,499 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 07:13:31,499 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 07:13:31,499 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 07:13:31,500 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 07:13:31,500 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 07:13:31,500 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 07:13:31,500 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 07:13:31,500 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 07:13:31,500 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 07:13:31,500 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 07:13:31,500 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_165d5d92-8684-482f-92dd-cf74e5d708d9/bin/uautomizer-verify-84ZbGMXZE1 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 -> 2d3a0113f0e8b781548a014794ff4c594483afc44f19a8c585ba3b3e554b1b3f [2024-12-02 07:13:31,768 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 07:13:31,777 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 07:13:31,780 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 07:13:31,781 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 07:13:31,782 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 07:13:31,783 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_165d5d92-8684-482f-92dd-cf74e5d708d9/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/combinations/square_5+soft_float_4-2a.c.cil.c [2024-12-02 07:13:34,489 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_165d5d92-8684-482f-92dd-cf74e5d708d9/bin/uautomizer-verify-84ZbGMXZE1/data/561d98cb7/e99761511b114b64ba05f3c4ab08a05c/FLAG8ab43915f [2024-12-02 07:13:34,690 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 07:13:34,691 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_165d5d92-8684-482f-92dd-cf74e5d708d9/sv-benchmarks/c/combinations/square_5+soft_float_4-2a.c.cil.c [2024-12-02 07:13:34,700 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_165d5d92-8684-482f-92dd-cf74e5d708d9/bin/uautomizer-verify-84ZbGMXZE1/data/561d98cb7/e99761511b114b64ba05f3c4ab08a05c/FLAG8ab43915f [2024-12-02 07:13:34,713 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_165d5d92-8684-482f-92dd-cf74e5d708d9/bin/uautomizer-verify-84ZbGMXZE1/data/561d98cb7/e99761511b114b64ba05f3c4ab08a05c [2024-12-02 07:13:34,715 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 07:13:34,717 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 07:13:34,718 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 07:13:34,718 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 07:13:34,722 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 07:13:34,723 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:13:34" (1/1) ... [2024-12-02 07:13:34,724 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ce253da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:13:34, skipping insertion in model container [2024-12-02 07:13:34,724 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:13:34" (1/1) ... [2024-12-02 07:13:34,745 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 07:13:34,893 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_165d5d92-8684-482f-92dd-cf74e5d708d9/sv-benchmarks/c/combinations/square_5+soft_float_4-2a.c.cil.c[1998,2011] [2024-12-02 07:13:34,898 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_165d5d92-8684-482f-92dd-cf74e5d708d9/sv-benchmarks/c/combinations/square_5+soft_float_4-2a.c.cil.c[2392,2405] [2024-12-02 07:13:34,938 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 07:13:34,947 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 07:13:34,961 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_165d5d92-8684-482f-92dd-cf74e5d708d9/sv-benchmarks/c/combinations/square_5+soft_float_4-2a.c.cil.c[1998,2011] [2024-12-02 07:13:34,962 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_165d5d92-8684-482f-92dd-cf74e5d708d9/sv-benchmarks/c/combinations/square_5+soft_float_4-2a.c.cil.c[2392,2405] [2024-12-02 07:13:34,987 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 07:13:35,003 INFO L204 MainTranslator]: Completed translation [2024-12-02 07:13:35,004 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:13:35 WrapperNode [2024-12-02 07:13:35,004 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 07:13:35,005 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 07:13:35,005 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 07:13:35,005 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 07:13:35,012 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:13:35" (1/1) ... [2024-12-02 07:13:35,022 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:13:35" (1/1) ... [2024-12-02 07:13:35,041 INFO L138 Inliner]: procedures = 27, calls = 19, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 77 [2024-12-02 07:13:35,041 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 07:13:35,041 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 07:13:35,042 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 07:13:35,042 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 07:13:35,051 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:13:35" (1/1) ... [2024-12-02 07:13:35,051 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:13:35" (1/1) ... [2024-12-02 07:13:35,053 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:13:35" (1/1) ... [2024-12-02 07:13:35,068 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-12-02 07:13:35,068 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:13:35" (1/1) ... [2024-12-02 07:13:35,068 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:13:35" (1/1) ... [2024-12-02 07:13:35,074 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:13:35" (1/1) ... [2024-12-02 07:13:35,075 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:13:35" (1/1) ... [2024-12-02 07:13:35,079 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:13:35" (1/1) ... [2024-12-02 07:13:35,081 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:13:35" (1/1) ... [2024-12-02 07:13:35,082 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:13:35" (1/1) ... [2024-12-02 07:13:35,084 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 07:13:35,084 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 07:13:35,085 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 07:13:35,085 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 07:13:35,085 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:13:35" (1/1) ... [2024-12-02 07:13:35,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:13:35,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_165d5d92-8684-482f-92dd-cf74e5d708d9/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:13:35,113 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_165d5d92-8684-482f-92dd-cf74e5d708d9/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 07:13:35,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_165d5d92-8684-482f-92dd-cf74e5d708d9/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 07:13:35,133 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 07:13:35,133 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2024-12-02 07:13:35,134 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2024-12-02 07:13:35,134 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2024-12-02 07:13:35,134 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2024-12-02 07:13:35,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 07:13:35,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 07:13:35,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 07:13:35,134 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-12-02 07:13:35,134 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-12-02 07:13:35,189 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 07:13:35,191 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 07:13:35,512 INFO L? ?]: Removed 60 outVars from TransFormulas that were not future-live. [2024-12-02 07:13:35,512 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 07:13:35,522 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 07:13:35,522 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-12-02 07:13:35,523 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:13:35 BoogieIcfgContainer [2024-12-02 07:13:35,523 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 07:13:35,525 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 07:13:35,525 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 07:13:35,529 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 07:13:35,529 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 07:13:34" (1/3) ... [2024-12-02 07:13:35,530 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2deeac02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:13:35, skipping insertion in model container [2024-12-02 07:13:35,530 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:13:35" (2/3) ... [2024-12-02 07:13:35,530 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2deeac02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:13:35, skipping insertion in model container [2024-12-02 07:13:35,530 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:13:35" (3/3) ... [2024-12-02 07:13:35,531 INFO L128 eAbstractionObserver]: Analyzing ICFG square_5+soft_float_4-2a.c.cil.c [2024-12-02 07:13:35,542 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 07:13:35,544 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG square_5+soft_float_4-2a.c.cil.c that has 4 procedures, 85 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2024-12-02 07:13:35,587 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 07:13:35,597 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;@7f1c2e40, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 07:13:35,597 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-12-02 07:13:35,600 INFO L276 IsEmpty]: Start isEmpty. Operand has 85 states, 71 states have (on average 1.5211267605633803) internal successors, (108), 73 states have internal predecessors, (108), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-12-02 07:13:35,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-12-02 07:13:35,604 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:13:35,605 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:13:35,605 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:13:35,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:13:35,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1530844763, now seen corresponding path program 1 times [2024-12-02 07:13:35,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:13:35,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661820813] [2024-12-02 07:13:35,614 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:13:35,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:13:35,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:13:35,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:13:35,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:13:35,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661820813] [2024-12-02 07:13:35,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661820813] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:13:35,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:13:35,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 07:13:35,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767601531] [2024-12-02 07:13:35,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:13:35,712 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 07:13:35,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:13:35,726 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 07:13:35,727 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 07:13:35,729 INFO L87 Difference]: Start difference. First operand has 85 states, 71 states have (on average 1.5211267605633803) internal successors, (108), 73 states have internal predecessors, (108), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2024-12-02 07:13:35,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:13:35,751 INFO L93 Difference]: Finished difference Result 165 states and 248 transitions. [2024-12-02 07:13:35,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 07:13:35,753 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2024-12-02 07:13:35,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:13:35,758 INFO L225 Difference]: With dead ends: 165 [2024-12-02 07:13:35,758 INFO L226 Difference]: Without dead ends: 78 [2024-12-02 07:13:35,761 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 [2024-12-02 07:13:35,764 INFO L435 NwaCegarLoop]: 114 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, 114 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 [2024-12-02 07:13:35,764 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:13:35,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-12-02 07:13:35,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2024-12-02 07:13:35,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 65 states have (on average 1.4) internal successors, (91), 67 states have internal predecessors, (91), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-12-02 07:13:35,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 106 transitions. [2024-12-02 07:13:35,797 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 106 transitions. Word has length 7 [2024-12-02 07:13:35,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:13:35,797 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 106 transitions. [2024-12-02 07:13:35,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2024-12-02 07:13:35,797 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 106 transitions. [2024-12-02 07:13:35,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-12-02 07:13:35,798 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:13:35,798 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:13:35,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 07:13:35,798 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:13:35,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:13:35,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1530904345, now seen corresponding path program 1 times [2024-12-02 07:13:35,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:13:35,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967225326] [2024-12-02 07:13:35,799 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:13:35,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:13:35,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 07:13:35,816 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 07:13:35,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 07:13:35,836 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-12-02 07:13:35,837 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-12-02 07:13:35,838 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2024-12-02 07:13:35,839 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-12-02 07:13:35,840 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 07:13:35,842 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2024-12-02 07:13:35,850 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-12-02 07:13:35,853 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 07:13:35 BoogieIcfgContainer [2024-12-02 07:13:35,853 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-12-02 07:13:35,854 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-12-02 07:13:35,854 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-12-02 07:13:35,854 INFO L274 PluginConnector]: Witness Printer initialized [2024-12-02 07:13:35,855 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:13:35" (3/4) ... [2024-12-02 07:13:35,857 INFO L149 WitnessPrinter]: No result that supports witness generation found [2024-12-02 07:13:35,857 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-12-02 07:13:35,858 INFO L158 Benchmark]: Toolchain (without parser) took 1141.39ms. Allocated memory is still 142.6MB. Free memory was 117.7MB in the beginning and 57.8MB in the end (delta: 59.9MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. [2024-12-02 07:13:35,858 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 142.6MB. Free memory was 82.7MB in the beginning and 82.7MB in the end (delta: 31.5kB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 07:13:35,859 INFO L158 Benchmark]: CACSL2BoogieTranslator took 286.72ms. Allocated memory is still 142.6MB. Free memory was 117.7MB in the beginning and 103.3MB in the end (delta: 14.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-02 07:13:35,859 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.83ms. Allocated memory is still 142.6MB. Free memory was 103.3MB in the beginning and 101.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 07:13:35,859 INFO L158 Benchmark]: Boogie Preprocessor took 42.22ms. Allocated memory is still 142.6MB. Free memory was 101.9MB in the beginning and 100.0MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 07:13:35,860 INFO L158 Benchmark]: RCFGBuilder took 438.66ms. Allocated memory is still 142.6MB. Free memory was 100.0MB in the beginning and 79.9MB in the end (delta: 20.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-02 07:13:35,860 INFO L158 Benchmark]: TraceAbstraction took 328.35ms. Allocated memory is still 142.6MB. Free memory was 79.3MB in the beginning and 58.2MB in the end (delta: 21.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-02 07:13:35,860 INFO L158 Benchmark]: Witness Printer took 3.05ms. Allocated memory is still 142.6MB. Free memory was 58.0MB in the beginning and 57.8MB in the end (delta: 199.5kB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 07:13:35,862 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 142.6MB. Free memory was 82.7MB in the beginning and 82.7MB in the end (delta: 31.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 286.72ms. Allocated memory is still 142.6MB. Free memory was 117.7MB in the beginning and 103.3MB in the end (delta: 14.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.83ms. Allocated memory is still 142.6MB. Free memory was 103.3MB in the beginning and 101.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 42.22ms. Allocated memory is still 142.6MB. Free memory was 101.9MB in the beginning and 100.0MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 438.66ms. Allocated memory is still 142.6MB. Free memory was 100.0MB in the beginning and 79.9MB in the end (delta: 20.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 328.35ms. Allocated memory is still 142.6MB. Free memory was 79.3MB in the beginning and 58.2MB in the end (delta: 21.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 3.05ms. Allocated memory is still 142.6MB. Free memory was 58.0MB in the beginning and 57.8MB in the end (delta: 199.5kB). 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: 48]: 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 47, overapproximation of someBinaryFLOATComparisonOperation at line 40, overapproximation of someBinaryArithmeticFLOAToperation at line 45. Possible FailurePath: [L310] COND TRUE __VERIFIER_nondet_int() [L311] CALL main1() [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L34] COND FALSE !(!cond) [L40] RET assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L42] float x = IN; [L44-L45] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; [L47] COND TRUE !(result >= 0.0f && result < 1.3985f) [L48] reach_error() - UnprovableResult [Line: 61]: 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 4 procedures, 85 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, 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, 114 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, 114 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=85occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 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 [2024-12-02 07:13:35,878 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_165d5d92-8684-482f-92dd-cf74e5d708d9/bin/uautomizer-verify-84ZbGMXZE1/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_165d5d92-8684-482f-92dd-cf74e5d708d9/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_165d5d92-8684-482f-92dd-cf74e5d708d9/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_165d5d92-8684-482f-92dd-cf74e5d708d9/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_165d5d92-8684-482f-92dd-cf74e5d708d9/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/square_5+soft_float_4-2a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_165d5d92-8684-482f-92dd-cf74e5d708d9/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_165d5d92-8684-482f-92dd-cf74e5d708d9/bin/uautomizer-verify-84ZbGMXZE1 --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 2d3a0113f0e8b781548a014794ff4c594483afc44f19a8c585ba3b3e554b1b3f --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 07:13:37,856 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 07:13:37,944 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_165d5d92-8684-482f-92dd-cf74e5d708d9/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-12-02 07:13:37,949 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 07:13:37,949 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 07:13:37,970 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 07:13:37,970 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 07:13:37,971 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 07:13:37,971 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 07:13:37,971 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 07:13:37,971 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 07:13:37,971 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 07:13:37,972 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 07:13:37,972 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 07:13:37,972 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 07:13:37,972 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 07:13:37,972 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 07:13:37,972 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 07:13:37,972 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 07:13:37,972 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 07:13:37,972 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 07:13:37,973 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 07:13:37,973 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 07:13:37,973 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-12-02 07:13:37,973 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-12-02 07:13:37,973 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-12-02 07:13:37,973 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 07:13:37,973 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 07:13:37,973 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 07:13:37,973 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 07:13:37,973 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 07:13:37,973 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 07:13:37,973 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 07:13:37,974 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 07:13:37,974 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:13:37,974 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 07:13:37,974 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 07:13:37,974 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 07:13:37,974 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 07:13:37,974 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:13:37,974 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 07:13:37,974 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 07:13:37,974 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 07:13:37,975 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 07:13:37,975 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-12-02 07:13:37,975 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-12-02 07:13:37,975 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 07:13:37,975 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 07:13:37,975 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 07:13:37,975 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 07:13:37,975 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_165d5d92-8684-482f-92dd-cf74e5d708d9/bin/uautomizer-verify-84ZbGMXZE1 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 -> 2d3a0113f0e8b781548a014794ff4c594483afc44f19a8c585ba3b3e554b1b3f [2024-12-02 07:13:38,198 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 07:13:38,204 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 07:13:38,206 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 07:13:38,207 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 07:13:38,208 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 07:13:38,209 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_165d5d92-8684-482f-92dd-cf74e5d708d9/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/combinations/square_5+soft_float_4-2a.c.cil.c [2024-12-02 07:13:40,941 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_165d5d92-8684-482f-92dd-cf74e5d708d9/bin/uautomizer-verify-84ZbGMXZE1/data/34134b5b3/7bb504827e4044f1a98c09cb440d8964/FLAGd7e82278c [2024-12-02 07:13:41,140 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 07:13:41,141 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_165d5d92-8684-482f-92dd-cf74e5d708d9/sv-benchmarks/c/combinations/square_5+soft_float_4-2a.c.cil.c [2024-12-02 07:13:41,149 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_165d5d92-8684-482f-92dd-cf74e5d708d9/bin/uautomizer-verify-84ZbGMXZE1/data/34134b5b3/7bb504827e4044f1a98c09cb440d8964/FLAGd7e82278c [2024-12-02 07:13:41,160 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_165d5d92-8684-482f-92dd-cf74e5d708d9/bin/uautomizer-verify-84ZbGMXZE1/data/34134b5b3/7bb504827e4044f1a98c09cb440d8964 [2024-12-02 07:13:41,162 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 07:13:41,163 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 07:13:41,164 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 07:13:41,164 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 07:13:41,167 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 07:13:41,168 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:13:41" (1/1) ... [2024-12-02 07:13:41,168 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ffd8823 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:13:41, skipping insertion in model container [2024-12-02 07:13:41,169 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:13:41" (1/1) ... [2024-12-02 07:13:41,187 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 07:13:41,342 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_165d5d92-8684-482f-92dd-cf74e5d708d9/sv-benchmarks/c/combinations/square_5+soft_float_4-2a.c.cil.c[1998,2011] [2024-12-02 07:13:41,348 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_165d5d92-8684-482f-92dd-cf74e5d708d9/sv-benchmarks/c/combinations/square_5+soft_float_4-2a.c.cil.c[2392,2405] [2024-12-02 07:13:41,387 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 07:13:41,401 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 07:13:41,413 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_165d5d92-8684-482f-92dd-cf74e5d708d9/sv-benchmarks/c/combinations/square_5+soft_float_4-2a.c.cil.c[1998,2011] [2024-12-02 07:13:41,414 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_165d5d92-8684-482f-92dd-cf74e5d708d9/sv-benchmarks/c/combinations/square_5+soft_float_4-2a.c.cil.c[2392,2405] [2024-12-02 07:13:41,439 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 07:13:41,452 INFO L204 MainTranslator]: Completed translation [2024-12-02 07:13:41,453 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:13:41 WrapperNode [2024-12-02 07:13:41,453 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 07:13:41,454 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 07:13:41,454 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 07:13:41,454 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 07:13:41,459 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:13:41" (1/1) ... [2024-12-02 07:13:41,468 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:13:41" (1/1) ... [2024-12-02 07:13:41,487 INFO L138 Inliner]: procedures = 28, calls = 19, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 73 [2024-12-02 07:13:41,488 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 07:13:41,488 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 07:13:41,488 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 07:13:41,488 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 07:13:41,497 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:13:41" (1/1) ... [2024-12-02 07:13:41,498 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:13:41" (1/1) ... [2024-12-02 07:13:41,501 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:13:41" (1/1) ... [2024-12-02 07:13:41,513 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-12-02 07:13:41,513 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:13:41" (1/1) ... [2024-12-02 07:13:41,513 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:13:41" (1/1) ... [2024-12-02 07:13:41,522 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:13:41" (1/1) ... [2024-12-02 07:13:41,523 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:13:41" (1/1) ... [2024-12-02 07:13:41,527 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:13:41" (1/1) ... [2024-12-02 07:13:41,528 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:13:41" (1/1) ... [2024-12-02 07:13:41,530 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:13:41" (1/1) ... [2024-12-02 07:13:41,532 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 07:13:41,533 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 07:13:41,533 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 07:13:41,533 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 07:13:41,534 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:13:41" (1/1) ... [2024-12-02 07:13:41,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:13:41,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_165d5d92-8684-482f-92dd-cf74e5d708d9/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:13:41,564 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_165d5d92-8684-482f-92dd-cf74e5d708d9/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 07:13:41,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_165d5d92-8684-482f-92dd-cf74e5d708d9/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 07:13:41,591 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 07:13:41,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-12-02 07:13:41,591 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2024-12-02 07:13:41,591 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2024-12-02 07:13:41,591 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2024-12-02 07:13:41,592 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2024-12-02 07:13:41,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 07:13:41,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 07:13:41,592 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-12-02 07:13:41,592 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-12-02 07:13:41,661 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 07:13:41,662 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 07:13:46,160 INFO L? ?]: Removed 44 outVars from TransFormulas that were not future-live. [2024-12-02 07:13:46,160 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 07:13:46,171 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 07:13:46,171 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-12-02 07:13:46,172 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:13:46 BoogieIcfgContainer [2024-12-02 07:13:46,172 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 07:13:46,174 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 07:13:46,174 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 07:13:46,178 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 07:13:46,178 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 07:13:41" (1/3) ... [2024-12-02 07:13:46,179 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@209159d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:13:46, skipping insertion in model container [2024-12-02 07:13:46,179 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:13:41" (2/3) ... [2024-12-02 07:13:46,179 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@209159d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:13:46, skipping insertion in model container [2024-12-02 07:13:46,179 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:13:46" (3/3) ... [2024-12-02 07:13:46,180 INFO L128 eAbstractionObserver]: Analyzing ICFG square_5+soft_float_4-2a.c.cil.c [2024-12-02 07:13:46,193 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 07:13:46,194 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG square_5+soft_float_4-2a.c.cil.c that has 4 procedures, 61 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2024-12-02 07:13:46,241 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 07:13:46,251 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;@4a64170b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 07:13:46,251 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-12-02 07:13:46,254 INFO L276 IsEmpty]: Start isEmpty. Operand has 61 states, 47 states have (on average 1.5106382978723405) internal successors, (71), 49 states have internal predecessors, (71), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-12-02 07:13:46,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-12-02 07:13:46,258 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:13:46,258 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:13:46,258 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:13:46,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:13:46,262 INFO L85 PathProgramCache]: Analyzing trace with hash 78502818, now seen corresponding path program 1 times [2024-12-02 07:13:46,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 07:13:46,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [641516157] [2024-12-02 07:13:46,269 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:13:46,269 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 [2024-12-02 07:13:46,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_165d5d92-8684-482f-92dd-cf74e5d708d9/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 07:13:46,271 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_165d5d92-8684-482f-92dd-cf74e5d708d9/bin/uautomizer-verify-84ZbGMXZE1/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) [2024-12-02 07:13:46,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_165d5d92-8684-482f-92dd-cf74e5d708d9/bin/uautomizer-verify-84ZbGMXZE1/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 [2024-12-02 07:13:46,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:13:46,745 INFO L256 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 07:13:46,747 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:13:46,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:13:46,762 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:13:46,763 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 07:13:46,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [641516157] [2024-12-02 07:13:46,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [641516157] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:13:46,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:13:46,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 07:13:46,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017154369] [2024-12-02 07:13:46,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:13:46,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 07:13:46,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 07:13:46,785 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 07:13:46,785 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 07:13:46,788 INFO L87 Difference]: Start difference. First operand has 61 states, 47 states have (on average 1.5106382978723405) internal successors, (71), 49 states have internal predecessors, (71), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2024-12-02 07:13:46,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:13:46,813 INFO L93 Difference]: Finished difference Result 117 states and 174 transitions. [2024-12-02 07:13:46,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 07:13:46,815 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2024-12-02 07:13:46,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:13:46,821 INFO L225 Difference]: With dead ends: 117 [2024-12-02 07:13:46,821 INFO L226 Difference]: Without dead ends: 54 [2024-12-02 07:13:46,825 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 07:13:46,827 INFO L435 NwaCegarLoop]: 79 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, 79 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 [2024-12-02 07:13:46,828 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:13:46,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-12-02 07:13:46,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2024-12-02 07:13:46,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 41 states have (on average 1.3658536585365855) internal successors, (56), 43 states have internal predecessors, (56), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-12-02 07:13:46,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 71 transitions. [2024-12-02 07:13:46,862 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 71 transitions. Word has length 7 [2024-12-02 07:13:46,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:13:46,863 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 71 transitions. [2024-12-02 07:13:46,863 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2024-12-02 07:13:46,863 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 71 transitions. [2024-12-02 07:13:46,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-12-02 07:13:46,864 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:13:46,864 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:13:46,873 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_165d5d92-8684-482f-92dd-cf74e5d708d9/bin/uautomizer-verify-84ZbGMXZE1/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 [2024-12-02 07:13:47,064 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_165d5d92-8684-482f-92dd-cf74e5d708d9/bin/uautomizer-verify-84ZbGMXZE1/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 [2024-12-02 07:13:47,065 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:13:47,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:13:47,065 INFO L85 PathProgramCache]: Analyzing trace with hash 78562400, now seen corresponding path program 1 times [2024-12-02 07:13:47,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 07:13:47,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2047768868] [2024-12-02 07:13:47,066 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:13:47,066 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 [2024-12-02 07:13:47,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_165d5d92-8684-482f-92dd-cf74e5d708d9/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 07:13:47,068 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_165d5d92-8684-482f-92dd-cf74e5d708d9/bin/uautomizer-verify-84ZbGMXZE1/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) [2024-12-02 07:13:47,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_165d5d92-8684-482f-92dd-cf74e5d708d9/bin/uautomizer-verify-84ZbGMXZE1/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 [2024-12-02 07:28:52,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:28:53,095 INFO L256 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-12-02 07:28:53,097 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:29:01,659 WARN L286 SmtUtils]: Spent 8.18s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)