./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/square_6+soft_float_4-3a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb666af-fb23-4466-a28b-9b96d417a164/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb666af-fb23-4466-a28b-9b96d417a164/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb666af-fb23-4466-a28b-9b96d417a164/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb666af-fb23-4466-a28b-9b96d417a164/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/square_6+soft_float_4-3a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb666af-fb23-4466-a28b-9b96d417a164/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb666af-fb23-4466-a28b-9b96d417a164/bin/uautomizer-verify-LYvppIcaGC --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 7f9af890a0b98df8fb43a2c8ebf2715c4a4b8a7c4e81db20c6dd9c8d356ba701 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 00:00:47,502 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 00:00:47,623 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb666af-fb23-4466-a28b-9b96d417a164/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-24 00:00:47,629 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 00:00:47,630 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 00:00:47,660 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 00:00:47,661 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 00:00:47,661 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 00:00:47,661 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 00:00:47,661 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 00:00:47,662 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 00:00:47,662 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 00:00:47,662 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 00:00:47,663 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 00:00:47,663 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 00:00:47,663 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 00:00:47,663 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 00:00:47,663 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 00:00:47,664 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 00:00:47,664 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 00:00:47,664 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 00:00:47,664 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 00:00:47,667 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 00:00:47,667 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 00:00:47,667 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 00:00:47,667 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 00:00:47,667 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 00:00:47,667 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 00:00:47,668 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 00:00:47,668 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:00:47,668 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:00:47,668 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:00:47,668 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:00:47,668 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 00:00:47,668 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:00:47,668 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:00:47,668 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:00:47,668 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:00:47,669 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 00:00:47,669 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 00:00:47,669 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 00:00:47,669 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 00:00:47,669 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 00:00:47,669 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 00:00:47,669 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 00:00:47,669 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 00:00:47,669 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 00:00:47,669 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 00:00:47,670 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_edb666af-fb23-4466-a28b-9b96d417a164/bin/uautomizer-verify-LYvppIcaGC 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 -> 7f9af890a0b98df8fb43a2c8ebf2715c4a4b8a7c4e81db20c6dd9c8d356ba701 [2024-11-24 00:00:48,018 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 00:00:48,033 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 00:00:48,038 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 00:00:48,039 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 00:00:48,040 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 00:00:48,042 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb666af-fb23-4466-a28b-9b96d417a164/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/combinations/square_6+soft_float_4-3a.c.cil.c [2024-11-24 00:00:51,348 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb666af-fb23-4466-a28b-9b96d417a164/bin/uautomizer-verify-LYvppIcaGC/data/8fa32197b/b3c49b3ebb6548e596d042fdbb4dd96c/FLAG58a67176b [2024-11-24 00:00:51,672 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 00:00:51,673 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb666af-fb23-4466-a28b-9b96d417a164/sv-benchmarks/c/combinations/square_6+soft_float_4-3a.c.cil.c [2024-11-24 00:00:51,684 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb666af-fb23-4466-a28b-9b96d417a164/bin/uautomizer-verify-LYvppIcaGC/data/8fa32197b/b3c49b3ebb6548e596d042fdbb4dd96c/FLAG58a67176b [2024-11-24 00:00:51,700 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb666af-fb23-4466-a28b-9b96d417a164/bin/uautomizer-verify-LYvppIcaGC/data/8fa32197b/b3c49b3ebb6548e596d042fdbb4dd96c [2024-11-24 00:00:51,703 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 00:00:51,705 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 00:00:51,706 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 00:00:51,707 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 00:00:51,713 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 00:00:51,714 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:00:51" (1/1) ... [2024-11-24 00:00:51,718 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@84ff71d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:00:51, skipping insertion in model container [2024-11-24 00:00:51,718 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:00:51" (1/1) ... [2024-11-24 00:00:51,748 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 00:00:51,971 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_edb666af-fb23-4466-a28b-9b96d417a164/sv-benchmarks/c/combinations/square_6+soft_float_4-3a.c.cil.c[1997,2010] [2024-11-24 00:00:51,977 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_edb666af-fb23-4466-a28b-9b96d417a164/sv-benchmarks/c/combinations/square_6+soft_float_4-3a.c.cil.c[2366,2379] [2024-11-24 00:00:52,034 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:00:52,046 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 00:00:52,063 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_edb666af-fb23-4466-a28b-9b96d417a164/sv-benchmarks/c/combinations/square_6+soft_float_4-3a.c.cil.c[1997,2010] [2024-11-24 00:00:52,065 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_edb666af-fb23-4466-a28b-9b96d417a164/sv-benchmarks/c/combinations/square_6+soft_float_4-3a.c.cil.c[2366,2379] [2024-11-24 00:00:52,101 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:00:52,119 INFO L204 MainTranslator]: Completed translation [2024-11-24 00:00:52,119 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:00:52 WrapperNode [2024-11-24 00:00:52,120 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 00:00:52,121 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 00:00:52,121 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 00:00:52,122 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 00:00:52,129 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:00:52" (1/1) ... [2024-11-24 00:00:52,138 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:00:52" (1/1) ... [2024-11-24 00:00:52,158 INFO L138 Inliner]: procedures = 27, calls = 20, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 77 [2024-11-24 00:00:52,158 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 00:00:52,159 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 00:00:52,159 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 00:00:52,159 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 00:00:52,170 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:00:52" (1/1) ... [2024-11-24 00:00:52,171 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:00:52" (1/1) ... [2024-11-24 00:00:52,173 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:00:52" (1/1) ... [2024-11-24 00:00:52,188 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]. [2024-11-24 00:00:52,188 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:00:52" (1/1) ... [2024-11-24 00:00:52,189 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:00:52" (1/1) ... [2024-11-24 00:00:52,196 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:00:52" (1/1) ... [2024-11-24 00:00:52,197 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:00:52" (1/1) ... [2024-11-24 00:00:52,203 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:00:52" (1/1) ... [2024-11-24 00:00:52,205 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:00:52" (1/1) ... [2024-11-24 00:00:52,206 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:00:52" (1/1) ... [2024-11-24 00:00:52,209 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 00:00:52,210 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 00:00:52,210 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 00:00:52,210 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 00:00:52,211 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:00:52" (1/1) ... [2024-11-24 00:00:52,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:00:52,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb666af-fb23-4466-a28b-9b96d417a164/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:00:52,252 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb666af-fb23-4466-a28b-9b96d417a164/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 00:00:52,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb666af-fb23-4466-a28b-9b96d417a164/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 00:00:52,289 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 00:00:52,290 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2024-11-24 00:00:52,290 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2024-11-24 00:00:52,290 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2024-11-24 00:00:52,290 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2024-11-24 00:00:52,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 00:00:52,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 00:00:52,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 00:00:52,291 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-24 00:00:52,291 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-24 00:00:52,398 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 00:00:52,401 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 00:00:53,009 INFO L? ?]: Removed 60 outVars from TransFormulas that were not future-live. [2024-11-24 00:00:53,012 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 00:00:53,029 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 00:00:53,030 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-24 00:00:53,032 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:00:53 BoogieIcfgContainer [2024-11-24 00:00:53,032 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 00:00:53,036 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 00:00:53,036 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 00:00:53,043 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 00:00:53,043 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 12:00:51" (1/3) ... [2024-11-24 00:00:53,044 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6da81b1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:00:53, skipping insertion in model container [2024-11-24 00:00:53,045 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:00:52" (2/3) ... [2024-11-24 00:00:53,047 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6da81b1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:00:53, skipping insertion in model container [2024-11-24 00:00:53,047 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:00:53" (3/3) ... [2024-11-24 00:00:53,048 INFO L128 eAbstractionObserver]: Analyzing ICFG square_6+soft_float_4-3a.c.cil.c [2024-11-24 00:00:53,074 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 00:00:53,076 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG square_6+soft_float_4-3a.c.cil.c that has 4 procedures, 85 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2024-11-24 00:00:53,170 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 00:00:53,185 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;@40c9221b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 00:00:53,186 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-24 00:00:53,190 INFO L276 IsEmpty]: Start isEmpty. Operand has 85 states, 70 states have (on average 1.5142857142857142) internal successors, (106), 72 states have internal predecessors, (106), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-24 00:00:53,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-24 00:00:53,195 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:00:53,196 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:00:53,197 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:00:53,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:00:53,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1530844763, now seen corresponding path program 1 times [2024-11-24 00:00:53,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:00:53,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888126136] [2024-11-24 00:00:53,209 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:00:53,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:00:53,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:00:53,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:00:53,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:00:53,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888126136] [2024-11-24 00:00:53,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888126136] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:00:53,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:00:53,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 00:00:53,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605981631] [2024-11-24 00:00:53,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:00:53,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-24 00:00:53,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:00:53,396 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-24 00:00:53,397 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 00:00:53,399 INFO L87 Difference]: Start difference. First operand has 85 states, 70 states have (on average 1.5142857142857142) internal successors, (106), 72 states have internal predecessors, (106), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) 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) [2024-11-24 00:00:53,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:00:53,435 INFO L93 Difference]: Finished difference Result 165 states and 249 transitions. [2024-11-24 00:00:53,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-24 00:00:53,438 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 [2024-11-24 00:00:53,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:00:53,447 INFO L225 Difference]: With dead ends: 165 [2024-11-24 00:00:53,447 INFO L226 Difference]: Without dead ends: 78 [2024-11-24 00:00:53,452 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 [2024-11-24 00:00:53,456 INFO L435 NwaCegarLoop]: 115 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, 115 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 [2024-11-24 00:00:53,457 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:00:53,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-24 00:00:53,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2024-11-24 00:00:53,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 64 states have (on average 1.40625) internal successors, (90), 66 states have internal predecessors, (90), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-24 00:00:53,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 107 transitions. [2024-11-24 00:00:53,533 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 107 transitions. Word has length 7 [2024-11-24 00:00:53,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:00:53,533 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 107 transitions. [2024-11-24 00:00:53,534 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) [2024-11-24 00:00:53,534 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 107 transitions. [2024-11-24 00:00:53,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-24 00:00:53,534 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:00:53,534 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:00:53,535 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-24 00:00:53,535 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:00:53,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:00:53,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1530904345, now seen corresponding path program 1 times [2024-11-24 00:00:53,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:00:53,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083351746] [2024-11-24 00:00:53,537 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:00:53,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:00:53,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 00:00:53,557 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-24 00:00:53,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 00:00:53,596 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-24 00:00:53,597 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-24 00:00:53,599 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2024-11-24 00:00:53,603 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-11-24 00:00:53,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-24 00:00:53,609 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-24 00:00:53,623 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-24 00:00:53,627 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 12:00:53 BoogieIcfgContainer [2024-11-24 00:00:53,627 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-24 00:00:53,628 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-24 00:00:53,628 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-24 00:00:53,628 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-24 00:00:53,629 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:00:53" (3/4) ... [2024-11-24 00:00:53,632 INFO L149 WitnessPrinter]: No result that supports witness generation found [2024-11-24 00:00:53,634 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-24 00:00:53,635 INFO L158 Benchmark]: Toolchain (without parser) took 1930.02ms. Allocated memory is still 117.4MB. Free memory was 93.9MB in the beginning and 86.4MB in the end (delta: 7.5MB). Peak memory consumption was 5.8MB. Max. memory is 16.1GB. [2024-11-24 00:00:53,635 INFO L158 Benchmark]: CDTParser took 0.43ms. Allocated memory is still 167.8MB. Free memory is still 105.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 00:00:53,636 INFO L158 Benchmark]: CACSL2BoogieTranslator took 413.93ms. Allocated memory is still 117.4MB. Free memory was 93.9MB in the beginning and 79.8MB in the end (delta: 14.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-24 00:00:53,636 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.60ms. Allocated memory is still 117.4MB. Free memory was 79.8MB in the beginning and 78.2MB in the end (delta: 1.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-24 00:00:53,637 INFO L158 Benchmark]: Boogie Preprocessor took 49.88ms. Allocated memory is still 117.4MB. Free memory was 77.9MB in the beginning and 76.3MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 00:00:53,638 INFO L158 Benchmark]: RCFGBuilder took 822.42ms. Allocated memory is still 117.4MB. Free memory was 76.0MB in the beginning and 56.1MB in the end (delta: 19.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-24 00:00:53,639 INFO L158 Benchmark]: TraceAbstraction took 591.74ms. Allocated memory is still 117.4MB. Free memory was 55.5MB in the beginning and 86.4MB in the end (delta: -31.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 00:00:53,639 INFO L158 Benchmark]: Witness Printer took 5.66ms. Allocated memory is still 117.4MB. Free memory was 86.4MB in the beginning and 86.4MB in the end (delta: 21.0kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 00:00:53,641 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43ms. Allocated memory is still 167.8MB. Free memory is still 105.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 413.93ms. Allocated memory is still 117.4MB. Free memory was 93.9MB in the beginning and 79.8MB in the end (delta: 14.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.60ms. Allocated memory is still 117.4MB. Free memory was 79.8MB in the beginning and 78.2MB in the end (delta: 1.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 49.88ms. Allocated memory is still 117.4MB. Free memory was 77.9MB in the beginning and 76.3MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 822.42ms. Allocated memory is still 117.4MB. Free memory was 76.0MB in the beginning and 56.1MB in the end (delta: 19.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 591.74ms. Allocated memory is still 117.4MB. Free memory was 55.5MB in the beginning and 86.4MB in the end (delta: -31.0MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 5.66ms. Allocated memory is still 117.4MB. Free memory was 86.4MB in the beginning and 86.4MB in the end (delta: 21.0kB). 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 40, overapproximation of someBinaryFLOATComparisonOperation at line 47, overapproximation of someBinaryArithmeticFLOAToperation at line 45. Possible FailurePath: [L309] COND TRUE __VERIFIER_nondet_int() [L310] 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 < 1.399f) [L48] reach_error() - UnprovableResult [Line: 60]: 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: 0.5s, 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, 115 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, 115 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: 0.1s 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 [2024-11-24 00:00:53,671 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb666af-fb23-4466-a28b-9b96d417a164/bin/uautomizer-verify-LYvppIcaGC/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_edb666af-fb23-4466-a28b-9b96d417a164/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb666af-fb23-4466-a28b-9b96d417a164/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb666af-fb23-4466-a28b-9b96d417a164/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb666af-fb23-4466-a28b-9b96d417a164/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/square_6+soft_float_4-3a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb666af-fb23-4466-a28b-9b96d417a164/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb666af-fb23-4466-a28b-9b96d417a164/bin/uautomizer-verify-LYvppIcaGC --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 7f9af890a0b98df8fb43a2c8ebf2715c4a4b8a7c4e81db20c6dd9c8d356ba701 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 00:00:56,872 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 00:00:56,981 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb666af-fb23-4466-a28b-9b96d417a164/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-24 00:00:56,988 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 00:00:56,988 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 00:00:57,034 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 00:00:57,035 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 00:00:57,035 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 00:00:57,035 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 00:00:57,036 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 00:00:57,036 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 00:00:57,036 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 00:00:57,037 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 00:00:57,037 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 00:00:57,037 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 00:00:57,037 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 00:00:57,037 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 00:00:57,038 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 00:00:57,038 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 00:00:57,038 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 00:00:57,038 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 00:00:57,038 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 00:00:57,038 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 00:00:57,038 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-24 00:00:57,039 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-24 00:00:57,039 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-24 00:00:57,039 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 00:00:57,039 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 00:00:57,039 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 00:00:57,039 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 00:00:57,040 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 00:00:57,040 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:00:57,040 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:00:57,040 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:00:57,040 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:00:57,040 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 00:00:57,040 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:00:57,041 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:00:57,041 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:00:57,041 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:00:57,041 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 00:00:57,041 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 00:00:57,041 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 00:00:57,041 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 00:00:57,042 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-24 00:00:57,042 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-24 00:00:57,042 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 00:00:57,042 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 00:00:57,042 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 00:00:57,042 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 00:00:57,042 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_edb666af-fb23-4466-a28b-9b96d417a164/bin/uautomizer-verify-LYvppIcaGC 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 -> 7f9af890a0b98df8fb43a2c8ebf2715c4a4b8a7c4e81db20c6dd9c8d356ba701 [2024-11-24 00:00:57,407 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 00:00:57,417 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 00:00:57,419 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 00:00:57,421 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 00:00:57,421 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 00:00:57,423 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb666af-fb23-4466-a28b-9b96d417a164/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/combinations/square_6+soft_float_4-3a.c.cil.c [2024-11-24 00:01:00,813 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb666af-fb23-4466-a28b-9b96d417a164/bin/uautomizer-verify-LYvppIcaGC/data/7816f65f0/f39d29a3d6334e0eb90bea19ac26d05c/FLAG1981598b6 [2024-11-24 00:01:01,212 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 00:01:01,213 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb666af-fb23-4466-a28b-9b96d417a164/sv-benchmarks/c/combinations/square_6+soft_float_4-3a.c.cil.c [2024-11-24 00:01:01,229 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb666af-fb23-4466-a28b-9b96d417a164/bin/uautomizer-verify-LYvppIcaGC/data/7816f65f0/f39d29a3d6334e0eb90bea19ac26d05c/FLAG1981598b6 [2024-11-24 00:01:01,258 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb666af-fb23-4466-a28b-9b96d417a164/bin/uautomizer-verify-LYvppIcaGC/data/7816f65f0/f39d29a3d6334e0eb90bea19ac26d05c [2024-11-24 00:01:01,261 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 00:01:01,264 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 00:01:01,267 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 00:01:01,269 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 00:01:01,275 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 00:01:01,276 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:01:01" (1/1) ... [2024-11-24 00:01:01,277 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10cfc38f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:01:01, skipping insertion in model container [2024-11-24 00:01:01,277 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:01:01" (1/1) ... [2024-11-24 00:01:01,314 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 00:01:01,535 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_edb666af-fb23-4466-a28b-9b96d417a164/sv-benchmarks/c/combinations/square_6+soft_float_4-3a.c.cil.c[1997,2010] [2024-11-24 00:01:01,543 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_edb666af-fb23-4466-a28b-9b96d417a164/sv-benchmarks/c/combinations/square_6+soft_float_4-3a.c.cil.c[2366,2379] [2024-11-24 00:01:01,637 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:01:01,660 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 00:01:01,683 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_edb666af-fb23-4466-a28b-9b96d417a164/sv-benchmarks/c/combinations/square_6+soft_float_4-3a.c.cil.c[1997,2010] [2024-11-24 00:01:01,685 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_edb666af-fb23-4466-a28b-9b96d417a164/sv-benchmarks/c/combinations/square_6+soft_float_4-3a.c.cil.c[2366,2379] [2024-11-24 00:01:01,745 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:01:01,777 INFO L204 MainTranslator]: Completed translation [2024-11-24 00:01:01,778 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:01:01 WrapperNode [2024-11-24 00:01:01,780 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 00:01:01,781 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 00:01:01,781 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 00:01:01,782 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 00:01:01,792 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:01:01" (1/1) ... [2024-11-24 00:01:01,810 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:01:01" (1/1) ... [2024-11-24 00:01:01,846 INFO L138 Inliner]: procedures = 28, calls = 20, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 73 [2024-11-24 00:01:01,848 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 00:01:01,849 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 00:01:01,849 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 00:01:01,849 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 00:01:01,861 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:01:01" (1/1) ... [2024-11-24 00:01:01,862 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:01:01" (1/1) ... [2024-11-24 00:01:01,871 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:01:01" (1/1) ... [2024-11-24 00:01:01,894 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]. [2024-11-24 00:01:01,894 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:01:01" (1/1) ... [2024-11-24 00:01:01,895 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:01:01" (1/1) ... [2024-11-24 00:01:01,913 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:01:01" (1/1) ... [2024-11-24 00:01:01,914 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:01:01" (1/1) ... [2024-11-24 00:01:01,921 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:01:01" (1/1) ... [2024-11-24 00:01:01,923 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:01:01" (1/1) ... [2024-11-24 00:01:01,928 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:01:01" (1/1) ... [2024-11-24 00:01:01,935 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 00:01:01,936 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 00:01:01,939 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 00:01:01,939 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 00:01:01,940 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:01:01" (1/1) ... [2024-11-24 00:01:01,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:01:01,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb666af-fb23-4466-a28b-9b96d417a164/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:01:01,983 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb666af-fb23-4466-a28b-9b96d417a164/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 00:01:01,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb666af-fb23-4466-a28b-9b96d417a164/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 00:01:02,031 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 00:01:02,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-24 00:01:02,031 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2024-11-24 00:01:02,031 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2024-11-24 00:01:02,031 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2024-11-24 00:01:02,031 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2024-11-24 00:01:02,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 00:01:02,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 00:01:02,032 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-24 00:01:02,032 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-24 00:01:02,150 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 00:01:02,152 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 00:01:06,814 INFO L? ?]: Removed 44 outVars from TransFormulas that were not future-live. [2024-11-24 00:01:06,817 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 00:01:06,838 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 00:01:06,838 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-24 00:01:06,839 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:01:06 BoogieIcfgContainer [2024-11-24 00:01:06,839 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 00:01:06,842 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 00:01:06,842 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 00:01:06,848 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 00:01:06,849 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 12:01:01" (1/3) ... [2024-11-24 00:01:06,849 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cb4843d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:01:06, skipping insertion in model container [2024-11-24 00:01:06,850 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:01:01" (2/3) ... [2024-11-24 00:01:06,850 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cb4843d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:01:06, skipping insertion in model container [2024-11-24 00:01:06,850 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:01:06" (3/3) ... [2024-11-24 00:01:06,852 INFO L128 eAbstractionObserver]: Analyzing ICFG square_6+soft_float_4-3a.c.cil.c [2024-11-24 00:01:06,870 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 00:01:06,872 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG square_6+soft_float_4-3a.c.cil.c that has 4 procedures, 61 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2024-11-24 00:01:06,933 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 00:01:06,951 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;@1bdfb293, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 00:01:06,953 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-24 00:01:06,958 INFO L276 IsEmpty]: Start isEmpty. Operand has 61 states, 46 states have (on average 1.5) internal successors, (69), 48 states have internal predecessors, (69), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-24 00:01:06,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-24 00:01:06,966 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:01:06,967 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:01:06,968 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:01:06,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:01:06,975 INFO L85 PathProgramCache]: Analyzing trace with hash 78502818, now seen corresponding path program 1 times [2024-11-24 00:01:06,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 00:01:06,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1665147186] [2024-11-24 00:01:06,988 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:01:06,989 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 [2024-11-24 00:01:06,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb666af-fb23-4466-a28b-9b96d417a164/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-24 00:01:06,996 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb666af-fb23-4466-a28b-9b96d417a164/bin/uautomizer-verify-LYvppIcaGC/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) [2024-11-24 00:01:06,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb666af-fb23-4466-a28b-9b96d417a164/bin/uautomizer-verify-LYvppIcaGC/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 [2024-11-24 00:01:07,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:01:07,536 INFO L256 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-24 00:01:07,539 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:01:07,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:01:07,558 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:01:07,559 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 00:01:07,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1665147186] [2024-11-24 00:01:07,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1665147186] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:01:07,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:01:07,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 00:01:07,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145159586] [2024-11-24 00:01:07,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:01:07,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-24 00:01:07,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 00:01:07,586 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-24 00:01:07,586 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 00:01:07,589 INFO L87 Difference]: Start difference. First operand has 61 states, 46 states have (on average 1.5) internal successors, (69), 48 states have internal predecessors, (69), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) 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) [2024-11-24 00:01:07,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:01:07,620 INFO L93 Difference]: Finished difference Result 117 states and 175 transitions. [2024-11-24 00:01:07,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-24 00:01:07,622 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 [2024-11-24 00:01:07,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:01:07,631 INFO L225 Difference]: With dead ends: 117 [2024-11-24 00:01:07,631 INFO L226 Difference]: Without dead ends: 54 [2024-11-24 00:01:07,638 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 [2024-11-24 00:01:07,643 INFO L435 NwaCegarLoop]: 80 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, 80 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 [2024-11-24 00:01:07,644 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:01:07,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-24 00:01:07,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2024-11-24 00:01:07,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 40 states have (on average 1.375) internal successors, (55), 42 states have internal predecessors, (55), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-24 00:01:07,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 72 transitions. [2024-11-24 00:01:07,693 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 72 transitions. Word has length 7 [2024-11-24 00:01:07,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:01:07,693 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 72 transitions. [2024-11-24 00:01:07,694 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) [2024-11-24 00:01:07,694 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 72 transitions. [2024-11-24 00:01:07,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-24 00:01:07,695 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:01:07,695 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:01:07,707 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb666af-fb23-4466-a28b-9b96d417a164/bin/uautomizer-verify-LYvppIcaGC/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 [2024-11-24 00:01:07,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb666af-fb23-4466-a28b-9b96d417a164/bin/uautomizer-verify-LYvppIcaGC/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 [2024-11-24 00:01:07,896 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:01:07,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:01:07,897 INFO L85 PathProgramCache]: Analyzing trace with hash 78562400, now seen corresponding path program 1 times [2024-11-24 00:01:07,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 00:01:07,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1556744507] [2024-11-24 00:01:07,898 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:01:07,898 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 [2024-11-24 00:01:07,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb666af-fb23-4466-a28b-9b96d417a164/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-24 00:01:07,902 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb666af-fb23-4466-a28b-9b96d417a164/bin/uautomizer-verify-LYvppIcaGC/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) [2024-11-24 00:01:07,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb666af-fb23-4466-a28b-9b96d417a164/bin/uautomizer-verify-LYvppIcaGC/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 [2024-11-24 00:12:09,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:12:10,402 INFO L256 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-24 00:12:10,408 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:12:19,152 WARN L286 SmtUtils]: Spent 8.21s 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) [2024-11-24 00:12:27,266 WARN L286 SmtUtils]: Spent 8.11s on a formula simplification that was a NOOP. DAG size: 28 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-24 00:12:35,466 WARN L286 SmtUtils]: Spent 8.20s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-24 00:12:39,547 WARN L851 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main1_~IN~0#1_5| (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (and (fp.geq |v_ULTIMATE.start_main1_~IN~0#1_5| (_ +zero 8 24)) (fp.lt |v_ULTIMATE.start_main1_~IN~0#1_5| .cse0) (= (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) |c_ULTIMATE.start_main1_~result~0#1|)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2024-11-24 00:12:55,811 WARN L286 SmtUtils]: Spent 8.12s on a formula simplification that was a NOOP. DAG size: 30 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-24 00:13:04,068 WARN L286 SmtUtils]: Spent 8.26s 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) [2024-11-24 00:13:12,381 WARN L286 SmtUtils]: Spent 8.31s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-24 00:13:24,701 WARN L286 SmtUtils]: Spent 8.26s 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) [2024-11-24 00:13:32,954 WARN L286 SmtUtils]: Spent 8.25s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-24 00:13:41,087 WARN L286 SmtUtils]: Spent 8.13s on a formula simplification that was a NOOP. DAG size: 29 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-24 00:13:45,190 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) roundNearestTiesToEven 1.0)) (.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0))) (.cse2 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0))) (.cse3 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0))) (.cse4 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0)))) (or (exists ((|v_ULTIMATE.start_main1_~IN~0#1_5| (_ FloatingPoint 8 24))) (and (not (fp.lt (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse3 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) ((_ to_fp 8 24) roundNearestTiesToEven (/ 1399.0 1000.0)))) (fp.geq |v_ULTIMATE.start_main1_~IN~0#1_5| (_ +zero 8 24)) (fp.lt |v_ULTIMATE.start_main1_~IN~0#1_5| .cse0))) (exists ((|v_ULTIMATE.start_main1_~IN~0#1_5| (_ FloatingPoint 8 24))) (and (fp.geq |v_ULTIMATE.start_main1_~IN~0#1_5| (_ +zero 8 24)) (fp.lt |v_ULTIMATE.start_main1_~IN~0#1_5| .cse0) (not (fp.geq (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse3 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (_ +zero 8 24))))))) is different from false [2024-11-24 00:13:49,236 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) roundNearestTiesToEven 1.0)) (.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0))) (.cse2 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0))) (.cse3 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0))) (.cse4 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0)))) (or (exists ((|v_ULTIMATE.start_main1_~IN~0#1_5| (_ FloatingPoint 8 24))) (and (not (fp.lt (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse3 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) ((_ to_fp 8 24) roundNearestTiesToEven (/ 1399.0 1000.0)))) (fp.geq |v_ULTIMATE.start_main1_~IN~0#1_5| (_ +zero 8 24)) (fp.lt |v_ULTIMATE.start_main1_~IN~0#1_5| .cse0))) (exists ((|v_ULTIMATE.start_main1_~IN~0#1_5| (_ FloatingPoint 8 24))) (and (fp.geq |v_ULTIMATE.start_main1_~IN~0#1_5| (_ +zero 8 24)) (fp.lt |v_ULTIMATE.start_main1_~IN~0#1_5| .cse0) (not (fp.geq (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse3 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (_ +zero 8 24))))))) is different from true [2024-11-24 00:13:49,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:13:49,238 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:13:49,238 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 00:13:49,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1556744507] [2024-11-24 00:13:49,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1556744507] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:13:49,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:13:49,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:13:49,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915062965] [2024-11-24 00:13:49,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:13:49,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 00:13:49,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 00:13:49,241 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 00:13:49,241 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=12, Unknown=3, NotChecked=14, Total=42 [2024-11-24 00:13:49,241 INFO L87 Difference]: Start difference. First operand 54 states and 72 transitions. Second operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 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) [2024-11-24 00:13:53,527 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-24 00:13:57,532 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-24 00:14:01,536 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-24 00:14:02,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:14:02,055 INFO L93 Difference]: Finished difference Result 54 states and 72 transitions. [2024-11-24 00:14:02,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 00:14:02,056 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 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 [2024-11-24 00:14:02,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:14:02,057 INFO L225 Difference]: With dead ends: 54 [2024-11-24 00:14:02,057 INFO L226 Difference]: Without dead ends: 49 [2024-11-24 00:14:02,058 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=13, Invalid=12, Unknown=3, NotChecked=14, Total=42 [2024-11-24 00:14:02,059 INFO L435 NwaCegarLoop]: 67 mSDtfsCounter, 66 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 144 IncrementalHoareTripleChecker+Unchecked, 12.8s IncrementalHoareTripleChecker+Time [2024-11-24 00:14:02,059 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 165 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 3 Unknown, 144 Unchecked, 12.8s Time] [2024-11-24 00:14:02,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-11-24 00:14:02,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2024-11-24 00:14:02,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 36 states have (on average 1.3888888888888888) internal successors, (50), 37 states have internal predecessors, (50), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-24 00:14:02,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 67 transitions. [2024-11-24 00:14:02,069 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 67 transitions. Word has length 7 [2024-11-24 00:14:02,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:14:02,070 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 67 transitions. [2024-11-24 00:14:02,070 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 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) [2024-11-24 00:14:02,070 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 67 transitions. [2024-11-24 00:14:02,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-24 00:14:02,072 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:14:02,072 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:14:02,109 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb666af-fb23-4466-a28b-9b96d417a164/bin/uautomizer-verify-LYvppIcaGC/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)] Forceful destruction successful, exit code 0 [2024-11-24 00:14:02,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb666af-fb23-4466-a28b-9b96d417a164/bin/uautomizer-verify-LYvppIcaGC/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 [2024-11-24 00:14:02,273 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:14:02,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:14:02,273 INFO L85 PathProgramCache]: Analyzing trace with hash -734027065, now seen corresponding path program 1 times [2024-11-24 00:14:02,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 00:14:02,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1819330957] [2024-11-24 00:14:02,274 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:14:02,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:14:02,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb666af-fb23-4466-a28b-9b96d417a164/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:14:02,276 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb666af-fb23-4466-a28b-9b96d417a164/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:14:02,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb666af-fb23-4466-a28b-9b96d417a164/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-24 00:14:02,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:14:02,353 INFO L256 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-24 00:14:02,357 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:14:03,459 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-24 00:14:03,459 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:14:03,950 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-24 00:14:03,950 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 00:14:03,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819330957] [2024-11-24 00:14:03,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819330957] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:14:03,951 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-24 00:14:03,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2024-11-24 00:14:03,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471133501] [2024-11-24 00:14:03,952 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-24 00:14:03,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-24 00:14:03,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 00:14:03,954 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-24 00:14:03,955 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-24 00:14:03,955 INFO L87 Difference]: Start difference. First operand 49 states and 67 transitions. Second operand has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-24 00:14:05,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:14:05,110 INFO L93 Difference]: Finished difference Result 98 states and 136 transitions. [2024-11-24 00:14:05,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-24 00:14:05,113 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 32 [2024-11-24 00:14:05,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:14:05,116 INFO L225 Difference]: With dead ends: 98 [2024-11-24 00:14:05,116 INFO L226 Difference]: Without dead ends: 70 [2024-11-24 00:14:05,118 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-11-24 00:14:05,123 INFO L435 NwaCegarLoop]: 60 mSDtfsCounter, 14 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-24 00:14:05,123 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 472 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-24 00:14:05,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-11-24 00:14:05,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 62. [2024-11-24 00:14:05,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 45 states have (on average 1.3333333333333333) internal successors, (60), 47 states have internal predecessors, (60), 11 states have call successors, (11), 4 states have call predecessors, (11), 5 states have return successors, (14), 10 states have call predecessors, (14), 10 states have call successors, (14) [2024-11-24 00:14:05,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 85 transitions. [2024-11-24 00:14:05,141 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 85 transitions. Word has length 32 [2024-11-24 00:14:05,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:14:05,142 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 85 transitions. [2024-11-24 00:14:05,142 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-24 00:14:05,142 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 85 transitions. [2024-11-24 00:14:05,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-24 00:14:05,143 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:14:05,144 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:14:05,155 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb666af-fb23-4466-a28b-9b96d417a164/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-24 00:14:05,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb666af-fb23-4466-a28b-9b96d417a164/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:14:05,344 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:14:05,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:14:05,345 INFO L85 PathProgramCache]: Analyzing trace with hash 1612883011, now seen corresponding path program 1 times [2024-11-24 00:14:05,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 00:14:05,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1364262598] [2024-11-24 00:14:05,345 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:14:05,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:14:05,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb666af-fb23-4466-a28b-9b96d417a164/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:14:05,347 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb666af-fb23-4466-a28b-9b96d417a164/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:14:05,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb666af-fb23-4466-a28b-9b96d417a164/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-24 00:14:05,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:14:05,431 INFO L256 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-24 00:14:05,433 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:14:07,232 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-24 00:14:07,232 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:14:08,634 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-24 00:14:08,635 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 00:14:08,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1364262598] [2024-11-24 00:14:08,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1364262598] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-24 00:14:08,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:14:08,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 16 [2024-11-24 00:14:08,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017562556] [2024-11-24 00:14:08,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:14:08,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 00:14:08,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 00:14:08,637 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 00:14:08,637 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2024-11-24 00:14:08,637 INFO L87 Difference]: Start difference. First operand 62 states and 85 transitions. Second operand has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-24 00:14:09,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:14:09,554 INFO L93 Difference]: Finished difference Result 126 states and 171 transitions. [2024-11-24 00:14:09,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-24 00:14:09,556 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 35 [2024-11-24 00:14:09,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:14:09,560 INFO L225 Difference]: With dead ends: 126 [2024-11-24 00:14:09,562 INFO L226 Difference]: Without dead ends: 94 [2024-11-24 00:14:09,563 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2024-11-24 00:14:09,565 INFO L435 NwaCegarLoop]: 75 mSDtfsCounter, 23 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-24 00:14:09,565 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 500 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-24 00:14:09,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-11-24 00:14:09,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 87. [2024-11-24 00:14:09,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 63 states have (on average 1.3015873015873016) internal successors, (82), 65 states have internal predecessors, (82), 16 states have call successors, (16), 6 states have call predecessors, (16), 7 states have return successors, (19), 15 states have call predecessors, (19), 15 states have call successors, (19) [2024-11-24 00:14:09,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 117 transitions. [2024-11-24 00:14:09,586 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 117 transitions. Word has length 35 [2024-11-24 00:14:09,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:14:09,586 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 117 transitions. [2024-11-24 00:14:09,587 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-24 00:14:09,587 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 117 transitions. [2024-11-24 00:14:09,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-24 00:14:09,588 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:14:09,589 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:14:09,598 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb666af-fb23-4466-a28b-9b96d417a164/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-24 00:14:09,789 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb666af-fb23-4466-a28b-9b96d417a164/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:14:09,789 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:14:09,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:14:09,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1670141313, now seen corresponding path program 1 times [2024-11-24 00:14:09,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 00:14:09,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1558290073] [2024-11-24 00:14:09,790 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:14:09,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:14:09,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb666af-fb23-4466-a28b-9b96d417a164/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:14:09,794 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb666af-fb23-4466-a28b-9b96d417a164/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:14:09,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb666af-fb23-4466-a28b-9b96d417a164/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-24 00:14:09,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:14:09,849 INFO L256 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-24 00:14:09,850 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:14:10,604 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-24 00:14:10,605 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:14:10,605 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 00:14:10,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1558290073] [2024-11-24 00:14:10,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1558290073] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:14:10,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:14:10,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-24 00:14:10,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272112081] [2024-11-24 00:14:10,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:14:10,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 00:14:10,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 00:14:10,607 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 00:14:10,607 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-24 00:14:10,608 INFO L87 Difference]: Start difference. First operand 87 states and 117 transitions. Second operand has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-24 00:14:11,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:14:11,269 INFO L93 Difference]: Finished difference Result 125 states and 167 transitions. [2024-11-24 00:14:11,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 00:14:11,270 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 35 [2024-11-24 00:14:11,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:14:11,272 INFO L225 Difference]: With dead ends: 125 [2024-11-24 00:14:11,272 INFO L226 Difference]: Without dead ends: 85 [2024-11-24 00:14:11,273 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-24 00:14:11,275 INFO L435 NwaCegarLoop]: 61 mSDtfsCounter, 12 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-24 00:14:11,276 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 419 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-24 00:14:11,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-11-24 00:14:11,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 70. [2024-11-24 00:14:11,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 51 states have (on average 1.2941176470588236) internal successors, (66), 53 states have internal predecessors, (66), 12 states have call successors, (12), 5 states have call predecessors, (12), 6 states have return successors, (15), 11 states have call predecessors, (15), 11 states have call successors, (15) [2024-11-24 00:14:11,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 93 transitions. [2024-11-24 00:14:11,302 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 93 transitions. Word has length 35 [2024-11-24 00:14:11,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:14:11,302 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 93 transitions. [2024-11-24 00:14:11,302 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-24 00:14:11,302 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 93 transitions. [2024-11-24 00:14:11,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-24 00:14:11,304 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:14:11,304 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:14:11,312 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb666af-fb23-4466-a28b-9b96d417a164/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-24 00:14:11,505 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb666af-fb23-4466-a28b-9b96d417a164/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:14:11,505 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:14:11,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:14:11,506 INFO L85 PathProgramCache]: Analyzing trace with hash -519373183, now seen corresponding path program 2 times [2024-11-24 00:14:11,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 00:14:11,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1870205023] [2024-11-24 00:14:11,506 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 00:14:11,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:14:11,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb666af-fb23-4466-a28b-9b96d417a164/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:14:11,510 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb666af-fb23-4466-a28b-9b96d417a164/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:14:11,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb666af-fb23-4466-a28b-9b96d417a164/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-24 00:14:11,579 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-24 00:14:11,579 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:14:11,581 INFO L256 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-24 00:14:11,583 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:14:13,411 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-24 00:14:13,411 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:14:13,411 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 00:14:13,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1870205023] [2024-11-24 00:14:13,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1870205023] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:14:13,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:14:13,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-24 00:14:13,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074107584] [2024-11-24 00:14:13,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:14:13,413 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-24 00:14:13,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 00:14:13,413 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-24 00:14:13,414 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-24 00:14:13,414 INFO L87 Difference]: Start difference. First operand 70 states and 93 transitions. Second operand has 12 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-24 00:14:16,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:14:16,296 INFO L93 Difference]: Finished difference Result 145 states and 194 transitions. [2024-11-24 00:14:16,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-24 00:14:16,297 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 38 [2024-11-24 00:14:16,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:14:16,298 INFO L225 Difference]: With dead ends: 145 [2024-11-24 00:14:16,298 INFO L226 Difference]: Without dead ends: 113 [2024-11-24 00:14:16,299 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2024-11-24 00:14:16,300 INFO L435 NwaCegarLoop]: 99 mSDtfsCounter, 38 mSDsluCounter, 907 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 1006 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:14:16,300 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 1006 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-24 00:14:16,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-11-24 00:14:16,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 103. [2024-11-24 00:14:16,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 75 states have (on average 1.2666666666666666) internal successors, (95), 78 states have internal predecessors, (95), 17 states have call successors, (17), 8 states have call predecessors, (17), 10 states have return successors, (24), 16 states have call predecessors, (24), 16 states have call successors, (24) [2024-11-24 00:14:16,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 136 transitions. [2024-11-24 00:14:16,332 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 136 transitions. Word has length 38 [2024-11-24 00:14:16,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:14:16,336 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 136 transitions. [2024-11-24 00:14:16,337 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-24 00:14:16,337 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 136 transitions. [2024-11-24 00:14:16,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-24 00:14:16,338 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:14:16,338 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:14:16,354 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb666af-fb23-4466-a28b-9b96d417a164/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-24 00:14:16,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb666af-fb23-4466-a28b-9b96d417a164/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:14:16,539 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:14:16,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:14:16,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1004058821, now seen corresponding path program 1 times [2024-11-24 00:14:16,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 00:14:16,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1890515761] [2024-11-24 00:14:16,540 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:14:16,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:14:16,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb666af-fb23-4466-a28b-9b96d417a164/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:14:16,543 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb666af-fb23-4466-a28b-9b96d417a164/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:14:16,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb666af-fb23-4466-a28b-9b96d417a164/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-24 00:14:16,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:14:16,604 INFO L256 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-24 00:14:16,606 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:14:17,312 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-24 00:14:17,313 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:14:17,732 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-24 00:14:17,733 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 00:14:17,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890515761] [2024-11-24 00:14:17,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890515761] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:14:17,733 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-24 00:14:17,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2024-11-24 00:14:17,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582616381] [2024-11-24 00:14:17,733 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-24 00:14:17,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 00:14:17,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 00:14:17,734 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 00:14:17,734 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-24 00:14:17,735 INFO L87 Difference]: Start difference. First operand 103 states and 136 transitions. Second operand has 8 states, 8 states have (on average 3.0) internal successors, (24), 6 states have internal predecessors, (24), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-24 00:14:18,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:14:18,610 INFO L93 Difference]: Finished difference Result 205 states and 275 transitions. [2024-11-24 00:14:18,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 00:14:18,611 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 6 states have internal predecessors, (24), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 38 [2024-11-24 00:14:18,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:14:18,613 INFO L225 Difference]: With dead ends: 205 [2024-11-24 00:14:18,613 INFO L226 Difference]: Without dead ends: 160 [2024-11-24 00:14:18,614 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-24 00:14:18,615 INFO L435 NwaCegarLoop]: 104 mSDtfsCounter, 34 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 665 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-24 00:14:18,615 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 665 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-24 00:14:18,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2024-11-24 00:14:18,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 139. [2024-11-24 00:14:18,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 100 states have (on average 1.27) internal successors, (127), 103 states have internal predecessors, (127), 26 states have call successors, (26), 10 states have call predecessors, (26), 12 states have return successors, (35), 25 states have call predecessors, (35), 25 states have call successors, (35) [2024-11-24 00:14:18,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 188 transitions. [2024-11-24 00:14:18,658 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 188 transitions. Word has length 38 [2024-11-24 00:14:18,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:14:18,658 INFO L471 AbstractCegarLoop]: Abstraction has 139 states and 188 transitions. [2024-11-24 00:14:18,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 6 states have internal predecessors, (24), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-24 00:14:18,658 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 188 transitions. [2024-11-24 00:14:18,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-24 00:14:18,660 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:14:18,660 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:14:18,668 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb666af-fb23-4466-a28b-9b96d417a164/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-24 00:14:18,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb666af-fb23-4466-a28b-9b96d417a164/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:14:18,861 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:14:18,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:14:18,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1061317123, now seen corresponding path program 1 times [2024-11-24 00:14:18,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 00:14:18,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2064493193] [2024-11-24 00:14:18,862 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:14:18,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:14:18,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb666af-fb23-4466-a28b-9b96d417a164/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:14:18,864 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb666af-fb23-4466-a28b-9b96d417a164/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:14:18,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb666af-fb23-4466-a28b-9b96d417a164/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-24 00:14:18,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:14:18,922 INFO L256 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-24 00:14:18,924 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:14:20,277 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-24 00:14:20,277 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:14:23,648 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 00:14:23,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064493193] [2024-11-24 00:14:23,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2064493193] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:14:23,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1423719199] [2024-11-24 00:14:23,648 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:14:23,649 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-24 00:14:23,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb666af-fb23-4466-a28b-9b96d417a164/bin/uautomizer-verify-LYvppIcaGC/cvc4 [2024-11-24 00:14:23,651 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb666af-fb23-4466-a28b-9b96d417a164/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-24 00:14:23,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb666af-fb23-4466-a28b-9b96d417a164/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2024-11-24 00:14:23,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:14:23,769 INFO L256 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-24 00:14:23,771 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:14:24,338 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-24 00:14:24,339 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:14:24,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1423719199] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:14:24,620 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-24 00:14:24,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2024-11-24 00:14:24,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529467123] [2024-11-24 00:14:24,620 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-24 00:14:24,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 00:14:24,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 00:14:24,621 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 00:14:24,621 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2024-11-24 00:14:24,622 INFO L87 Difference]: Start difference. First operand 139 states and 188 transitions. Second operand has 11 states, 10 states have (on average 2.4) internal successors, (24), 8 states have internal predecessors, (24), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-24 00:14:27,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:14:27,004 INFO L93 Difference]: Finished difference Result 170 states and 220 transitions. [2024-11-24 00:14:27,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-24 00:14:27,005 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.4) internal successors, (24), 8 states have internal predecessors, (24), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 38 [2024-11-24 00:14:27,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:14:27,007 INFO L225 Difference]: With dead ends: 170 [2024-11-24 00:14:27,007 INFO L226 Difference]: Without dead ends: 168 [2024-11-24 00:14:27,008 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2024-11-24 00:14:27,009 INFO L435 NwaCegarLoop]: 103 mSDtfsCounter, 36 mSDsluCounter, 846 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 949 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-24 00:14:27,009 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 949 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-24 00:14:27,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2024-11-24 00:14:27,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 147. [2024-11-24 00:14:27,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 106 states have (on average 1.2547169811320755) internal successors, (133), 109 states have internal predecessors, (133), 26 states have call successors, (26), 12 states have call predecessors, (26), 14 states have return successors, (35), 25 states have call predecessors, (35), 25 states have call successors, (35) [2024-11-24 00:14:27,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 194 transitions. [2024-11-24 00:14:27,045 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 194 transitions. Word has length 38 [2024-11-24 00:14:27,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:14:27,046 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 194 transitions. [2024-11-24 00:14:27,046 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.4) internal successors, (24), 8 states have internal predecessors, (24), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-24 00:14:27,046 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 194 transitions. [2024-11-24 00:14:27,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-24 00:14:27,049 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:14:27,049 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:14:27,053 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb666af-fb23-4466-a28b-9b96d417a164/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2024-11-24 00:14:27,255 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb666af-fb23-4466-a28b-9b96d417a164/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-24 00:14:27,450 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb666af-fb23-4466-a28b-9b96d417a164/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb666af-fb23-4466-a28b-9b96d417a164/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:14:27,450 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:14:27,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:14:27,451 INFO L85 PathProgramCache]: Analyzing trace with hash -251302391, now seen corresponding path program 1 times [2024-11-24 00:14:27,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 00:14:27,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1290268599] [2024-11-24 00:14:27,451 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:14:27,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:14:27,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb666af-fb23-4466-a28b-9b96d417a164/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:14:27,453 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb666af-fb23-4466-a28b-9b96d417a164/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:14:27,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb666af-fb23-4466-a28b-9b96d417a164/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-24 00:14:27,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:14:27,505 INFO L256 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-24 00:14:27,507 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:14:28,144 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-24 00:14:28,144 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:14:28,144 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 00:14:28,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290268599] [2024-11-24 00:14:28,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1290268599] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:14:28,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:14:28,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 00:14:28,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137908314] [2024-11-24 00:14:28,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:14:28,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 00:14:28,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 00:14:28,145 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 00:14:28,145 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:14:28,146 INFO L87 Difference]: Start difference. First operand 147 states and 194 transitions. Second operand has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-24 00:14:29,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:14:29,105 INFO L93 Difference]: Finished difference Result 163 states and 211 transitions. [2024-11-24 00:14:29,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:14:29,106 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 38 [2024-11-24 00:14:29,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:14:29,108 INFO L225 Difference]: With dead ends: 163 [2024-11-24 00:14:29,108 INFO L226 Difference]: Without dead ends: 161 [2024-11-24 00:14:29,108 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:14:29,109 INFO L435 NwaCegarLoop]: 62 mSDtfsCounter, 3 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-24 00:14:29,109 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 298 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-24 00:14:29,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2024-11-24 00:14:29,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 153. [2024-11-24 00:14:29,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 110 states have (on average 1.2545454545454546) internal successors, (138), 114 states have internal predecessors, (138), 27 states have call successors, (27), 13 states have call predecessors, (27), 15 states have return successors, (36), 25 states have call predecessors, (36), 26 states have call successors, (36) [2024-11-24 00:14:29,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 201 transitions. [2024-11-24 00:14:29,133 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 201 transitions. Word has length 38 [2024-11-24 00:14:29,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:14:29,133 INFO L471 AbstractCegarLoop]: Abstraction has 153 states and 201 transitions. [2024-11-24 00:14:29,133 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-24 00:14:29,134 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 201 transitions. [2024-11-24 00:14:29,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-24 00:14:29,135 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:14:29,135 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:14:29,144 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb666af-fb23-4466-a28b-9b96d417a164/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-24 00:14:29,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb666af-fb23-4466-a28b-9b96d417a164/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:14:29,336 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:14:29,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:14:29,336 INFO L85 PathProgramCache]: Analyzing trace with hash -194044089, now seen corresponding path program 1 times [2024-11-24 00:14:29,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 00:14:29,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [501758929] [2024-11-24 00:14:29,337 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:14:29,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:14:29,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb666af-fb23-4466-a28b-9b96d417a164/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:14:29,338 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb666af-fb23-4466-a28b-9b96d417a164/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:14:29,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb666af-fb23-4466-a28b-9b96d417a164/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-24 00:14:29,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:14:29,392 INFO L256 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-24 00:14:29,393 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:14:30,055 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-24 00:14:30,055 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:14:30,055 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 00:14:30,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501758929] [2024-11-24 00:14:30,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501758929] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:14:30,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:14:30,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 00:14:30,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477488349] [2024-11-24 00:14:30,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:14:30,056 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 00:14:30,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 00:14:30,057 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 00:14:30,057 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:14:30,057 INFO L87 Difference]: Start difference. First operand 153 states and 201 transitions. Second operand has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-24 00:14:30,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:14:30,790 INFO L93 Difference]: Finished difference Result 159 states and 206 transitions. [2024-11-24 00:14:30,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:14:30,791 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 38 [2024-11-24 00:14:30,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:14:30,793 INFO L225 Difference]: With dead ends: 159 [2024-11-24 00:14:30,793 INFO L226 Difference]: Without dead ends: 157 [2024-11-24 00:14:30,793 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:14:30,794 INFO L435 NwaCegarLoop]: 61 mSDtfsCounter, 3 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-24 00:14:30,795 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 293 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-24 00:14:30,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2024-11-24 00:14:30,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 151. [2024-11-24 00:14:30,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 109 states have (on average 1.2477064220183487) internal successors, (136), 112 states have internal predecessors, (136), 26 states have call successors, (26), 13 states have call predecessors, (26), 15 states have return successors, (35), 25 states have call predecessors, (35), 25 states have call successors, (35) [2024-11-24 00:14:30,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 197 transitions. [2024-11-24 00:14:30,819 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 197 transitions. Word has length 38 [2024-11-24 00:14:30,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:14:30,819 INFO L471 AbstractCegarLoop]: Abstraction has 151 states and 197 transitions. [2024-11-24 00:14:30,820 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-24 00:14:30,820 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 197 transitions. [2024-11-24 00:14:30,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-24 00:14:30,821 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:14:30,821 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:14:30,831 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb666af-fb23-4466-a28b-9b96d417a164/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-24 00:14:31,022 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb666af-fb23-4466-a28b-9b96d417a164/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:14:31,022 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:14:31,023 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:14:31,023 INFO L85 PathProgramCache]: Analyzing trace with hash -615244136, now seen corresponding path program 1 times [2024-11-24 00:14:31,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 00:14:31,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [107191673] [2024-11-24 00:14:31,023 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:14:31,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:14:31,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb666af-fb23-4466-a28b-9b96d417a164/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:14:31,025 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb666af-fb23-4466-a28b-9b96d417a164/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:14:31,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb666af-fb23-4466-a28b-9b96d417a164/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-24 00:14:31,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:14:31,094 INFO L256 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-24 00:14:31,097 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:14:34,444 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-24 00:14:34,444 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:14:41,414 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-24 00:14:41,414 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 00:14:41,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [107191673] [2024-11-24 00:14:41,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [107191673] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:14:41,414 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-24 00:14:41,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14] total 27 [2024-11-24 00:14:41,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724010827] [2024-11-24 00:14:41,414 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-24 00:14:41,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-24 00:14:41,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 00:14:41,416 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-24 00:14:41,417 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=634, Unknown=0, NotChecked=0, Total=702 [2024-11-24 00:14:41,417 INFO L87 Difference]: Start difference. First operand 151 states and 197 transitions. Second operand has 27 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 20 states have internal predecessors, (40), 8 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-24 00:14:49,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:14:49,739 INFO L93 Difference]: Finished difference Result 247 states and 328 transitions. [2024-11-24 00:14:49,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-24 00:14:49,740 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 20 states have internal predecessors, (40), 8 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) Word has length 44 [2024-11-24 00:14:49,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:14:49,744 INFO L225 Difference]: With dead ends: 247 [2024-11-24 00:14:49,744 INFO L226 Difference]: Without dead ends: 219 [2024-11-24 00:14:49,745 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=117, Invalid=1073, Unknown=0, NotChecked=0, Total=1190 [2024-11-24 00:14:49,746 INFO L435 NwaCegarLoop]: 114 mSDtfsCounter, 58 mSDsluCounter, 1696 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 1810 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2024-11-24 00:14:49,746 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 1810 Invalid, 544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2024-11-24 00:14:49,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2024-11-24 00:14:49,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 202. [2024-11-24 00:14:49,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 143 states have (on average 1.2517482517482517) internal successors, (179), 148 states have internal predecessors, (179), 39 states have call successors, (39), 17 states have call predecessors, (39), 19 states have return successors, (48), 36 states have call predecessors, (48), 38 states have call successors, (48) [2024-11-24 00:14:49,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 266 transitions. [2024-11-24 00:14:49,788 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 266 transitions. Word has length 44 [2024-11-24 00:14:49,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:14:49,789 INFO L471 AbstractCegarLoop]: Abstraction has 202 states and 266 transitions. [2024-11-24 00:14:49,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 20 states have internal predecessors, (40), 8 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-24 00:14:49,790 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 266 transitions. [2024-11-24 00:14:49,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-24 00:14:49,792 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:14:49,792 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:14:49,804 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb666af-fb23-4466-a28b-9b96d417a164/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-24 00:14:49,997 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb666af-fb23-4466-a28b-9b96d417a164/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:14:49,998 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:14:49,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:14:49,998 INFO L85 PathProgramCache]: Analyzing trace with hash 2090210780, now seen corresponding path program 1 times [2024-11-24 00:14:49,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 00:14:49,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1407320475] [2024-11-24 00:14:49,998 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:14:49,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:14:49,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb666af-fb23-4466-a28b-9b96d417a164/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:14:50,003 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb666af-fb23-4466-a28b-9b96d417a164/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:14:50,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb666af-fb23-4466-a28b-9b96d417a164/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-24 00:14:50,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 00:14:50,062 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-24 00:14:50,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 00:14:50,119 INFO L130 FreeRefinementEngine]: Strategy FOX found a feasible trace [2024-11-24 00:14:50,120 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-24 00:14:50,121 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2024-11-24 00:14:50,123 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-11-24 00:14:50,133 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb666af-fb23-4466-a28b-9b96d417a164/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-24 00:14:50,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb666af-fb23-4466-a28b-9b96d417a164/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:14:50,326 INFO L422 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:14:50,349 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-24 00:14:50,352 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 12:14:50 BoogieIcfgContainer [2024-11-24 00:14:50,352 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-24 00:14:50,352 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-24 00:14:50,352 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-24 00:14:50,353 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-24 00:14:50,353 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:01:06" (3/4) ... [2024-11-24 00:14:50,354 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-24 00:14:50,398 INFO L129 tionWitnessGenerator]: Generated YAML witness of length 25. [2024-11-24 00:14:50,486 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb666af-fb23-4466-a28b-9b96d417a164/bin/uautomizer-verify-LYvppIcaGC/witness.graphml [2024-11-24 00:14:50,486 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb666af-fb23-4466-a28b-9b96d417a164/bin/uautomizer-verify-LYvppIcaGC/witness.yml [2024-11-24 00:14:50,487 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-24 00:14:50,487 INFO L158 Benchmark]: Toolchain (without parser) took 829224.35ms. Allocated memory is still 83.9MB. Free memory was 60.9MB in the beginning and 55.2MB in the end (delta: 5.7MB). Peak memory consumption was 47.9MB. Max. memory is 16.1GB. [2024-11-24 00:14:50,487 INFO L158 Benchmark]: CDTParser took 0.49ms. Allocated memory is still 83.9MB. Free memory is still 47.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 00:14:50,488 INFO L158 Benchmark]: CACSL2BoogieTranslator took 513.32ms. Allocated memory is still 83.9MB. Free memory was 60.9MB in the beginning and 45.9MB in the end (delta: 15.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-24 00:14:50,489 INFO L158 Benchmark]: Boogie Procedure Inliner took 66.89ms. Allocated memory is still 83.9MB. Free memory was 45.9MB in the beginning and 44.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 00:14:50,489 INFO L158 Benchmark]: Boogie Preprocessor took 86.10ms. Allocated memory is still 83.9MB. Free memory was 44.6MB in the beginning and 42.4MB in the end (delta: 2.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 00:14:50,490 INFO L158 Benchmark]: RCFGBuilder took 4903.69ms. Allocated memory is still 83.9MB. Free memory was 42.4MB in the beginning and 56.0MB in the end (delta: -13.7MB). Peak memory consumption was 20.1MB. Max. memory is 16.1GB. [2024-11-24 00:14:50,492 INFO L158 Benchmark]: TraceAbstraction took 823509.95ms. Allocated memory is still 83.9MB. Free memory was 55.7MB in the beginning and 19.7MB in the end (delta: 35.9MB). Peak memory consumption was 36.2MB. Max. memory is 16.1GB. [2024-11-24 00:14:50,493 INFO L158 Benchmark]: Witness Printer took 134.35ms. Allocated memory is still 83.9MB. Free memory was 19.7MB in the beginning and 55.2MB in the end (delta: -35.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-24 00:14:50,494 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.49ms. Allocated memory is still 83.9MB. Free memory is still 47.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 513.32ms. Allocated memory is still 83.9MB. Free memory was 60.9MB in the beginning and 45.9MB in the end (delta: 15.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 66.89ms. Allocated memory is still 83.9MB. Free memory was 45.9MB in the beginning and 44.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 86.10ms. Allocated memory is still 83.9MB. Free memory was 44.6MB in the beginning and 42.4MB in the end (delta: 2.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 4903.69ms. Allocated memory is still 83.9MB. Free memory was 42.4MB in the beginning and 56.0MB in the end (delta: -13.7MB). Peak memory consumption was 20.1MB. Max. memory is 16.1GB. * TraceAbstraction took 823509.95ms. Allocated memory is still 83.9MB. Free memory was 55.7MB in the beginning and 19.7MB in the end (delta: 35.9MB). Peak memory consumption was 36.2MB. Max. memory is 16.1GB. * Witness Printer took 134.35ms. Allocated memory is still 83.9MB. Free memory was 19.7MB in the beginning and 55.2MB in the end (delta: -35.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 60]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L309] COND FALSE !(__VERIFIER_nondet_int()) [L312] CALL main2() [L269] unsigned int a ; [L270] unsigned int ma = __VERIFIER_nondet_uint(); [L271] signed char ea = __VERIFIER_nondet_char(); [L272] unsigned int b ; [L273] unsigned int mb = __VERIFIER_nondet_uint(); [L274] signed char eb = __VERIFIER_nondet_char(); [L275] unsigned int r_add1 ; [L276] unsigned int r_add2 ; [L277] unsigned int zero ; [L278] int tmp ; [L279] int tmp___0 ; [L280] int __retres14 ; [L284] CALL, EXPR base2flt(0, 0) VAL [\old(e)=0, \old(m)=0] [L68] unsigned int res ; [L69] unsigned int __retres4 ; VAL [\old(e)=0, \old(m)=0, e=0, m=0] [L72] COND TRUE ! m [L73] __retres4 = 0U VAL [\old(e)=0, \old(m)=0, __retres4=0, e=0] [L123] return (__retres4); VAL [\old(e)=0, \old(m)=0, \result=0, e=0] [L284] RET, EXPR base2flt(0, 0) [L284] zero = base2flt(0, 0) [L285] CALL, EXPR base2flt(ma, ea) VAL [\old(e)=127, \old(m)=67108864] [L68] unsigned int res ; [L69] unsigned int __retres4 ; VAL [\old(e)=127, \old(m)=67108864, e=127, m=67108864] [L72] COND FALSE !(! m) VAL [\old(e)=127, \old(m)=67108864, e=127, m=67108864] [L78] COND FALSE !(m < 1U << 24U) VAL [\old(e)=127, \old(m)=67108864, e=127, m=67108864] [L102] COND TRUE m >= 1U << 25U VAL [\old(e)=127, \old(m)=67108864, e=127, m=67108864] [L107] COND TRUE e >= 127 [L108] __retres4 = 4294967295U VAL [\old(e)=127, \old(m)=67108864, __retres4=-1, m=67108864] [L123] return (__retres4); VAL [\old(e)=127, \old(m)=67108864, \result=-1, m=67108864] [L285] RET, EXPR base2flt(ma, ea) VAL [ea=127, ma=67108864] [L285] a = base2flt(ma, ea) [L286] CALL, EXPR base2flt(mb, eb) VAL [\old(e)=-16, \old(m)=16777216] [L68] unsigned int res ; [L69] unsigned int __retres4 ; VAL [\old(e)=-16, \old(m)=16777216, e=-16, m=16777216] [L72] COND FALSE !(! m) VAL [\old(e)=-16, \old(m)=16777216, e=-16, m=16777216] [L78] COND FALSE !(m < 1U << 24U) VAL [\old(e)=-16, \old(m)=16777216, e=-16, m=16777216] [L102] COND FALSE !(m >= 1U << 25U) VAL [\old(e)=-16, \old(m)=16777216, e=-16, m=16777216] [L119] m = m & ~ (1U << 24U) [L120] res = m | ((unsigned int )(e + 128) << 24U) [L121] __retres4 = res VAL [\old(e)=-16, \old(m)=16777216, __retres4=1879048192] [L123] return (__retres4); VAL [\old(e)=-16, \old(m)=16777216, \result=1879048192] [L286] RET, EXPR base2flt(mb, eb) VAL [a=-1, ea=127, eb=-16, ma=67108864, mb=16777216] [L286] b = base2flt(mb, eb) [L287] CALL addflt(a, b) VAL [\old(a)=-1, \old(b)=1879048192] [L127] unsigned int res ; [L128] unsigned int ma ; [L129] unsigned int mb ; [L130] unsigned int delta ; [L131] int ea ; [L132] int eb ; [L133] unsigned int tmp ; [L134] unsigned int __retres10 ; VAL [\old(a)=-1, \old(b)=1879048192, a=-1, b=1879048192] [L137] COND FALSE !(a < b) VAL [\old(a)=-1, \old(b)=1879048192, a=-1, b=1879048192] [L144] COND FALSE !(! b) [L151] ma = a & ((1U << 24U) - 1U) [L152] ea = (int )(a >> 24U) - 128 [L153] ma = ma | (1U << 24U) [L154] mb = b & ((1U << 24U) - 1U) [L155] eb = (int )(b >> 24U) - 128 [L156] mb = mb | (1U << 24U) VAL [\old(a)=-1, \old(b)=1879048192, a=-1, ea=127, eb=-16, ma=33554431, mb=16777216] [L157] CALL __VERIFIER_assert(ea >= eb) VAL [\old(cond)=1] [L59] COND FALSE !(!(cond)) VAL [\old(cond)=1] [L157] RET __VERIFIER_assert(ea >= eb) VAL [\old(a)=-1, \old(b)=1879048192, a=-1, ea=127, eb=-16, ma=33554431, mb=16777216] [L158] delta = ea - eb VAL [\old(a)=-1, \old(b)=1879048192, a=-1, delta=143, ea=127, ma=33554431, mb=16777216] [L159] CALL __VERIFIER_assert(delta < sizeof(mb) * 8) VAL [\old(cond)=0] [L59] COND TRUE !(cond) VAL [\old(cond)=0] [L60] reach_error() VAL [\old(cond)=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: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 61 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 823.4s, OverallIterations: 12, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 31.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3 mSolverCounterUnknown, 315 SdHoareTripleChecker+Valid, 26.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 287 mSDsluCounter, 6657 SdHoareTripleChecker+Invalid, 26.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 144 IncrementalHoareTripleChecker+Unchecked, 5771 mSDsCounter, 43 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1232 IncrementalHoareTripleChecker+Invalid, 1422 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 43 mSolverCounterUnsat, 886 mSDtfsCounter, 1232 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 566 GetRequests, 445 SyntacticMatches, 1 SemanticMatches, 120 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 36.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=202occurred in iteration=11, InterpolantAutomatonStates: 104, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 11 MinimizatonAttempts, 113 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 662.1s SatisfiabilityAnalysisTime, 125.6s InterpolantComputationTime, 432 NumberOfCodeBlocks, 415 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 521 ConstructedInterpolants, 10 QuantifiedInterpolants, 1531 SizeOfPredicates, 25 NumberOfNonLiveVariables, 761 ConjunctsInSsa, 114 ConjunctsInUnsatCore, 16 InterpolantComputations, 7 PerfectInterpolantSequences, 214/237 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-11-24 00:14:50,695 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb666af-fb23-4466-a28b-9b96d417a164/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE